TOKYO, JAPAN
Denon Brand Company, D&M Holdings lnc.
● For purposes of improvement, specifications and
design are subject to change without notice.
● Please use this service manual with referring to the
operating instructions without fail.
● Some illustrations using in this service manual are
slightly different from the actual set.
注 意
サービスをおこなう前に、このサービスマニュアルを
必ずお読みください。本機は、火災、感電、けがなど
に対する安全性を確保するために、さまざまな配慮を
おこなっており、また法的には「電気用品安全法」に
もとづき、所定の許可を得て製造されております。
従ってサービスをおこなう際は、これらの安全性が維
持されるよう、このサービスマニュアルに記載されて
いる注意事項を必ずお守りください。
● 本機の仕様は性能改良のため、予告なく変更すること
があります。
● 補修用性能部品の保有期間は、製造打切後 8 年です。
● 修理の際は、必ず取扱説明書を参照の上、作業を行っ
てください。
● 本文中に使用しているイラストは、説明の都合上現物
と多少異なる場合があります。
X0336V.01 DE/CDM 0704
SERVICE MANUAL
DVD VIDEO AUTO CHANGER
MODEL
JP
E3
E2
EK
E2A
E1C
E1K
EUT
DVM-1845/745
�
Ver. 1
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2
DVM-1845/745
Please heed the points listed below during servicing and inspection.
◎ Heed the cautions!
Spots requiring particular attention when servicing, such as
the cabinet, parts, chassis, etc., have cautions indicated on
labels or seals. Be sure to heed these cautions and the cau-
tions indicated in the handling instructions.
◎ Caution concerning electric shock!
(1) An AC voltage is impressed on this set, so touching inter-
nal metal parts when the set is energized could cause
electric shock. Take care to avoid electric shock, by for ex-
ample using an isolating transformer and gloves when
servicing while the set is energized, unplugging the power
cord when replacing parts, etc.
(2)There are high voltage parts inside. Handle with extra care
when the set is energized.
◎ Caution concerning disassembly and assembly!
Though great care is taken when manufacturing parts from
sheet metal, there may in some rare cases be burrs on the
edges of parts which could cause injury if fingers are moved
across them. Use gloves to protect your hands.
◎ Only use designated parts!
The set's parts have specific safety properties (fire resis-
tance, voltage resistance, etc.). For replacement parts, be
sure to use parts which have the same properties. In particu-
lar, for the important safety parts that are marked ! on wiring
diagrams and parts lists, be sure to use the designated parts.
◎ Be sure to mount parts and arrange the
wires as they were originally!
For safety reasons, some parts use tape, tubes or other insu-
lating materials, and some parts are mounted away from the
surface of printed circuit boards. Care is also taken with the
positions of the wires inside and clamps are used to keep
wires away from heating and high voltage parts, so be sure to
set everything back as it was originally.
◎Inspect for safety after servicing!
Check that all screws, parts and wires removed or discon-
nected for servicing have been put back in their original posi-
tions, inspect that no parts around the area that has been
serviced have been negatively affected, conduct an insulation
check on the external metal connectors and between the
blades of the power plug, and otherwise check that safety is
ensured.
(Insulation check procedure)
Unplug the power cord from the power outlet, disconnect the
antenna, plugs, etc., and turn the power switch on. Using a
500V insulation resistance tester, check that the insulation re-
sistance between the terminals of the power plug and the ex-
ternally exposed metal parts (antenna terminal, headphones
terminal, microphone terminal, input terminal, etc.) is 1MΩ or
greater. If it is less, the set must be inspected and repaired.
Concerning important safety parts
Many of the electric and structural parts used in the set have
special safety properties. In most cases these properties are
difficult to distinguish by sight, and using replacement parts
with higher ratings (rated power and withstand voltage) does
not necessarily guarantee that safety performance will be pre-
served. Parts with safety properties are indicated as shown
below on the wiring diagrams and parts lists is this service
manual. Be sure to replace them with parts with the designat-
ed part number.
(1) Schematic diagrams ... Indicated by the ! mark.
(2) Parts lists ... Indicated by the ! mark.
Using parts other than the designated parts
could result in electric shock, fires or other
dangerous situations.
SAFETY PRECAUTIONS
The following check should be performed for the continued protection of the customer and service technician.
LEAKAGE CURRENT CHECK
Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis
resistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the power
cord is less than 460 kohms, the unit is defective.
LASER RADIATION
Caution - Class 1M visible and invisible laser radiation when open.
Do not view directly with optical instruments.
CAUTION
CAUTION
サービス、点検時にはつぎのことにご注意願います。
◎注意事項をお守りください！
サービスのとき特に注意を必要とする個所についてはキャ
ビネット、部品、シャーシなどにラベルや捺印で注意事項を
表示しています。これらの注意書きおよび取扱説明書などの
注意事項を必ずお守りください。
◎感電に注意！
(1) このセットは、交流電圧が印加されていますので通電時
に内部金属部に触れると感電することがあります。従っ
て通電サービス時には、絶縁トランスの使用や手袋の着
用、部品交換には、電源プラグを抜くなどして感電にご
注意ください。
(2) 内部には高電圧の部分がありますので、通電時の取扱に
は十分ご注意ください。
◎分解、組み立て作業時のご注意！
板金部品の端面の『バリ』は、部品製造時に充分管理をして
おりますが、板金端面は鋭利となっている箇所が有りますの
で、部品端面に触れたまま指を動かすとまれに怪我をする場
合がありますので十分注意して作業して下さい。手の保護の
ために手袋を着用してください。
◎指定部品の使用！
セットの部品は難燃性や耐電圧など安全上の特性を持った
ものとなっています。従って交換部品は、使用されていたも
のと同じ特性の部品を使用してください。特に配線図、部品
表に ! 印で指定されている安全上重要な部品は必ず指定の
ものをご使用ください。
◎部品の取付けや配線の引きまわしは、
元どおりに！
安全上、テープやチューブなどの絶縁材料を使用したり、プ
リント基板から浮かして取付けた部品があります。また内部
配線は引きまわしやクランパーによって発熱部品や高圧部
品に接近しないように配慮されていますので、これらは必ず
元どおりにしてください。
◎サービス後は安全点検を！
サービスのために取り外したねじ、部品、配線などが元どお
りになっているか、またサービスした個所の周辺を劣化させ
てしまったところがないかなどを点検し、外部金属端子部
と、電源プラグの刃の間の絶縁チェックをおこなうなど、安
全性が確保されていることを確認してください。
（絶縁チェックの方法）
電源コンセントから電源プラグを抜き、アンテナやプラグな
どを外し、電源スイッチを入れます。500V 絶縁抵抗計を用
いて、電源プラグのそれぞれの端子と外部露出金属部［アン
テナ端子、ヘッドホン端子、マイク端子、入力端子など］と
の間で、絶縁抵抗値が１ MΩ 以上であることを確認してく
ださい。この値以下のときはセットの点検修理が必要です。
安全上重要な部品について
本機に使用している多くの電気部品、および機構部品は安全
上、特別な特性を持っています。この特性はほとんどの場合、
外観では判別つきにくく、またもとの部品より高い定格（定
格電力、耐圧）を持ったものを使用しても安全性が維持され
るとは、限りません。安全上の特性を持った部品は、この
サービスマニュアルの配線図、部品表につぎのように表示し
ていますので必ず指定されている部品番号のものを使用願
います。
(1) 配線図… ! マークで表示しています。
(2) 部品表… ! マークで表示しています。
指定された部品と異なるものを使用した場合に
は、感電、火災などの危険を生じる恐れがあり
ます。
注 意
注 意
w w w
.
x i a o y u 1 6 3 .
c o m
Q Q
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DVM-1845/745
SPECIFICATIONS
Notes:
1.
All Items are measured without pre-emphasis unless otherwise specified.
2.
Power supply: AC 120 V, 60 Hz
3.
Load Impedance: 100 k load (Audio Output)
4.
Room Ambient: 5 °C - 40 °C
Item
Conditions
Unit
Nominal
Limit
1. Video Output
75
load
Vpp
1.0
± 0.1
2. Optical Digital Out
dBm
-18
3. Audio (PCM)
3-1. Output Level
1 kHz, 0 dB
Vrms
2.0
3-2. S/N
dB
120
3-3. Freq. Response
DVD
fs = 48 kHz, 20 Hz ~ 22 kHz
dB
± 1.0
CD
fs = 44.1 kHz, 20 Hz ~ 20 kHz
dB
± 1.0
3-4. THD+N
DVD
1 kHz, 0 dB
%
0.004
CD
1 kHz, 0 dB
%
0.004
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DVM-1845/745
Safety Check after Servicing
Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts, and
wires have been returned to their original positions. Afterwards, do the following tests and confirm the specified
values to verify compliance with safety standards.
1. Clearance Distance
When replacing primary circuit components, confirm
specified clearance distance (d) and (d’) between
soldered terminals, and between terminals and
surrounding metallic parts. (See Fig. 1)
Table 1: Ratings for selected area
Note:
This table is unofficial and for reference only. Be
sure to confirm the precise values.
2. Leakage Current Test
Confirm the specified (or lower) leakage current
between B (earth ground, power cord plug prongs) and
externally exposed accessible parts (RF terminals,
antenna terminals, video and audio input and output
terminals, microphone jacks, earphone jacks, etc.) is
lower than or equal to the specified value in the table
below.
Measuring Method (Power ON):
Insert load Z between B (earth ground, power cord plug
prongs) and exposed accessible parts. Use an AC
voltmeter to measure across the terminals of load Z.
See Fig. 2 and the following table.
Table 2: Leakage current ratings for selected areas
Note:
This table is unofficial and for reference only. Be sure to confirm the precise values.
AC Line Voltage
Clearance Distance (d), (d’)
120 V
≥ 3.2 mm (0.126 inches)
AC Line Voltage
Load Z
Leakage Current (i)
Earth Ground (B) to:
120 V
0.15 µF CAP. & 1.5 kΩ RES.
Connected in parallel
i ≤ 0.5 mA Peak
Exposed accessible parts
Chassis or Secondary Conductor
Primary Circuit
Fig. 1
d'
d
AC Voltmeter
(High Impedance)
Exposed Accessible Part
B
Earth Ground
Power Cord Plug Prongs
Z
Fig. 2
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DVM-1845/745
STANDARD NOTES FOR SERVICING
Circuit Board Indications
1.
The output pin of the 3 pin Regulator ICs is
indicated as shown.
2.
For other ICs, pin 1 and every fifth pin are
indicated as shown.
3.
The 1st pin of every male connector is indicated as
shown.
Instructions for Connectors
1.
When you connect or disconnect the FFC (Flexible
Foil Connector) cable, be sure to first disconnect
the AC cord.
2.
FFC (Flexible Foil Connector) cable should be
inserted parallel into the connector, not at an
angle.
Pb (Lead) Free Solder
When soldering, be sure to use the Pb free solder.
How to Remove / Install Flat Pack-IC
1. Removal
With Hot-Air Flat Pack-IC Desoldering Machine:
1.
Prepare the hot-air flat pack-IC desoldering
machine, then apply hot air to the Flat Pack-IC
(about 5 to 6 seconds). (Fig. S-1-1)
2.
Remove the flat pack-IC with tweezers while
applying the hot air.
3.
Bottom of the flat pack-IC is fixed with glue to the
CBA; when removing entire flat pack-IC, first apply
soldering iron to center of the flat pack-IC and heat
up. Then remove (glue will be melted). (Fig. S-1-6)
4.
Release the flat pack-IC from the CBA using
tweezers. (Fig. S-1-6)
CAUTION:
1.
The Flat Pack-IC shape may differ by models. Use
an appropriate hot-air flat pack-IC desoldering
machine, whose shape matches that of the Flat
Pack-IC.
2.
Do not supply hot air to the chip parts around the
flat pack-IC for over 6 seconds because damage
to the chip parts may occur. Put masking tape
around the flat pack-IC to protect other parts from
damage. (Fig. S-1-2)
Top View
Out
In
Bottom View
Input
5
10
Pin 1
Pin 1
FFC Cable
Connector
CBA
* Be careful to avoid a short circuit.
Fig. S-1-1
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DVM-1845/745
3.
The flat pack-IC on the CBA is affixed with glue, so
be careful not to break or damage the foil of each
pin or the solder lands under the IC when
removing it.
With Soldering Iron:
1.
Using desoldering braid, remove the solder from
all pins of the flat pack-IC. When you use solder
flux which is applied to all pins of the flat pack-IC,
you can remove it easily. (Fig. S-1-3)
2.
Lift each lead of the flat pack-IC upward one by
one, using a sharp pin or wire to which solder will
not adhere (iron wire). When heating the pins, use
a fine tip soldering iron or a hot air desoldering
machine. (Fig. S-1-4)
3.
Bottom of the flat pack-IC is fixed with glue to the
CBA; when removing entire flat pack-IC, first apply
soldering iron to center of the flat pack-IC and heat
up. Then remove (glue will be melted). (Fig. S-1-6)
4.
Release the flat pack-IC from the CBA using
tweezers. (Fig. S-1-6)
Hot-air
Flat Pack-IC
Desoldering
Machine
CBA
Flat Pack-IC
Tweezers
Masking
Tape
Fig. S-1-2
Flat Pack-IC
Desoldering Braid
Soldering Iron
Fig. S-1-3
Fine Tip
Soldering Iron
Sharp
Pin
Fig. S-1-4
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DVM-1845/745
With Iron Wire:
1.
Using desoldering braid, remove the solder from
all pins of the flat pack-IC. When you use solder
flux which is applied to all pins of the flat pack-IC,
you can remove it easily. (Fig. S-1-3)
2.
Affix the wire to a workbench or solid mounting
point, as shown in Fig. S-1-5.
3.
While heating the pins using a fine tip soldering
iron or hot air blower, pull up the wire as the solder
melts so as to lift the IC leads from the CBA
contact pads as shown in Fig. S-1-5.
4.
Bottom of the flat pack-IC is fixed with glue to the
CBA; when removing entire flat pack-IC, first apply
soldering iron to center of the flat pack-IC and heat
up. Then remove (glue will be melted). (Fig. S-1-6)
5.
Release the flat pack-IC from the CBA using
tweezers. (Fig. S-1-6)
Note: When using a soldering iron, care must be
taken to ensure that the flat pack-IC is not
being held by glue. When the flat pack-IC is
removed from the CBA, handle it gently
because it may be damaged if force is applied.
2. Installation
1.
Using desoldering braid, remove the solder from
the foil of each pin of the flat pack-IC on the CBA
so you can install a replacement flat pack-IC more
easily.
2.
The “●” mark on the flat pack-IC indicates pin 1.
(See Fig. S-1-7.) Be sure this mark matches the 1
on the PCB when positioning for installation. Then
presolder the four corners of the flat pack-IC. (See
Fig. S-1-8.)
3.
Solder all pins of the flat pack-IC. Be sure that
none of the pins have solder bridges.
To Solid
Mounting Point
Soldering Iron
Iron Wire
or
Hot Air Blower
Fig. S-1-5
Fine Tip
Soldering Iron
CBA
Flat Pack-IC
Tweezers
Fig. S-1-6
Example :
Pin 1 of the Flat Pack-IC
is indicated by a " " mark.
Fig. S-1-7
Presolder
CBA
Flat Pack-IC
Fig. S-1-8
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DVM-1845/745
Instructions for Handling Semi-
conductors
Electrostatic breakdown of the semi-conductors may
occur due to a potential difference caused by
electrostatic charge during unpacking or repair work.
1. Ground for Human Body
Be sure to wear a grounding band (1 MΩ) that is
properly grounded to remove any static electricity that
may be charged on the body.
2. Ground for Workbench
Be sure to place a conductive sheet or copper plate
with proper grounding (1 MΩ) on the workbench or
other surface, where the semi-conductors are to be
placed. Because the static electricity charge on
clothing will not escape through the body grounding
band, be careful to avoid contacting semi-conductors
with your clothing.
CBA
Grounding Band
Conductive Sheet or
Copper Plate
1MΩ
1MΩ
CBA
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DVM-1845/745
CABINET DISASSEMBLY INSTRUCTIONS
1. Disassembly Flowchart
This flowchart indicates the disassembly steps to gain
access to item(s) to be serviced. When reassembling,
follow the steps in reverse order. Bend, route, and
dress the cables as they were originally.
2. Disassembly Method
(1): Identification (location) No. of parts in the figures
(2): Name of the part
(3): Figure Number for reference
(4): Identification of parts to be removed, unhooked,
unlocked, released, unplugged, unclamped, or
desoldered.
P=Spring, L=Locking Tab, S=Screw,CN=Connector
*=Unhook, Unlock, Release, Unplug, or Desolder
e.g. 2(S-2) = two Screws (S-2),
2(L-2) = two Locking Tabs (L-2)
(5): Refer to “Reference Notes.”
ID/
LOC.
No.
PART
REMOVAL
Fig.
No.
REMOVE/*UNHOOK/
UNLOCK/RELEASE/
UNPLUG/DESOLDER
Note
[1] Top Cover
D1
6(S-1)
-
[2] Front
Assembly
D2
*8(L-1)
1
[3] Bracket
(Top)
D3
2(S-2)
-
[4]
Stopper
Bracket
L, R
D3
4(S-3)
-
[5] Slide Tray
Assembly
D4
D5
CN5001, CN5004
2
3
4
[6] Function CBA
D4
*2(L-2), CN2201
-
[1] Top Cover
[2] Front Assembly
[3] Bracket (Top)
[4] Stopper Bracket L, R
[5] Slide Tray
Assembly
[10] Tray Guide
(R) Unit
[19] DVD Main
CBA Unit
[17] Changer CBA
[18] AV CBA
[20] PCB Holder
[11] Loading
Pulley
[12] Slide Tray
Gear (B)
[13] Slide Tray
Gear (A)
[14] Motor
Assembly
[15] Switch CBA
[16] Tray
Guide (R)
[7] Power
Switch CBA
[8] Rear Panel
[9] Tray
Guide (L)
[6] Function CBA
[7] Power Switch
CBA
D4 CN2103, (S-4)
-
[8] Rear Panel
D6 4(S-5), 11(S-6), (S-7)
-
[9] Tray
Guide (L)
D7 (S-8)
-
[10]
Tray
Guide (R)
Unit
D7 2(S-9), CN3003,
CN3004
-
[11] Loading
Pulley
D8 (S-10), Belt L
-
[12] Slide Tray
Gear (B)
D8 (S-11), *(P-1)
-
[13] Slide Tray
Gear (A)
D8 ----------
-
[14] Motor
Assembly
D8 (S-12)
-
[15] Switch
CBA
D8 *2(L-4)
-
[16] Tray
Guide (R)
D8 ----------
-
[17] Changer CBA
D9 CN3102, CN3301,
2(S-13)
-
[18 AV CBA
D9 5(S-14), CN1001,
CN1601
-
[19] DVD Main
CBA Unit
D10 3(S-15)
-
[20] PCB Holder
D10 ----------
-
↓
(1)
↓
(2)
↓
(3)
↓
(4)
↓
(5)
ID/
LOC.
No.
PART
REMOVAL
Fig.
No.
REMOVE/*UNHOOK/
UNLOCK/RELEASE/
UNPLUG/DESOLDER
Note
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10
DVM-1845/745
Reference Notes
CAUTION 1: Locking Tabs (L-1) are fragile. Be careful
not to break them.
1-1. To release eight Locking Tabs (L-1), first release
five Locking Tabs (A), and then three Locking
Tabs (B). (Fig. D2)
CAUTION 2: Electrostatic breakdown of the laser
diode in the optical system block may occur as a
potential difference caused by electrostatic charge
accumulated on cloth, human body etc., during
unpacking or repair work.
To avoid damage of pickup follow next procedures.
2-1. To remove the Chuck Arm, remove the Screw A,
two Rotary Tray Washers and Rotary Tray
Spring. (Fig. D5)
2-2. Short the three short lands of FPC cable with sol-
der before removing the FFC cable (CN5004 on
the Relay CBA). If you disconnect the FFC cable
without shorting them, the laser diode of pickup
will be destroyed. (Fig. D5)
2-3. Disconnect the Connector (CN5001). Remove
the Slide Tray Assembly carefully. (Fig. D5)
CAUTION 3: When reassembling, confirm the three
short lands of FPC cable is solderd, and connect the
FFC cable (CN5004 on the Relay CBA) completely.
Then remove the solder from the three short lands of
FPC cable. (Fig. D5)
CAUTION 4: Before reinstalling, turn the Slide Tray
Gear (B) fully clockwise. (Fig. D4)
(S-1)
(S-1)
(S-1)
[1] Top Cover
(S-1)
Fig. D1
[2] Front Assembly
(L-1)
(A)
(B)
(B)
(L-1)
(L-1)
(L-1)
(L-1)
Fig. D2
[3] Bracket (Top)
[4] Stopper Bracket R
[4] Stopper Bracket L
(S-3)
(S-2)
(S-2)
(S-3)
(S-3)
Fig. D3
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11
DVM-1845/745
Slide Tray
Gear (B)
CN2201
[6] Function CBA
(L-2)
(L-2)
(S-4)
[7] Power
Switch CBA
CN2103
[5] Slide Tray
Assembly
Turn
Fig. D4
Slide Tray
Assembly
Screw A
Rotary tray washer
Rotary tray washer
B
Chuck arm
View for A
Short the three short lands by soldering.
(Either of two places.)
FPC Cable
A
Rotary tray spring
Relay CBA
CN5001
CN5004
FFC cable from
the DVD Main
CBA Unit
FFC cable from
the Changer CBA
View for B (Relay CBA)
Fig. D5
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12
DVM-1845/745
(S-5)
(S-5)
(S-5)
(S-5)
(S-6)
(S-6)
(S-6)
(S-7)
[8] Rear Panel
Fig. D6
(S-8)
[10] Tray Guide
(R) Unit
[9] Tray Guide (L)
CN3004
CN3003
(S-9)
Fig. D7
(S-10)
Belt L
[11] Loading
Pulley
[12] Slide Tray Gear (B)
[14] Motor Assembly
[15] Switch
CBA
(S-12)
(L-4)
[13] Slide Tray Gear (A)
[16] Tray
Guide (R)
(P-1)
(S-11)
Fig. D8
CN3102
CN3301
CN1001
CN1601
[17] Changer CBA
(S-13)
(S-13)
[18] AV CBA
(S-14)
(S-14)
Fig. D9
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DVM-1845/745
(S-15)
[20] PCB Holder
[19] DVD Main
CBA Unit
Fig. D10
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DVM-1845/745
SLIDE TRAY ASSEMBLY DISASSEMBLY INSTRUCTIONS
1. Disassembly Flowchart
This flowchart indicates the disassembly steps to gain access to item(s) to be serviced. When Reassembly, follow
the steps in reverse order. Bend, route, and dress the cables as they were originally.
[3] Plate Holder 2
[4] Plate Holder 3
[5] Plate Spring
[6] Belt L
[7] Gear Plate
[8] Mecha Cable
[9] Detector Switch
[10] Rotary Motor Assembly
[11] Relay CBA + Sensor CBA
[12] Slot Lever
[13] Rotary Stopper
[14] Mecha Holder Assembly
[15] Motion Gear
[16] Loading Pulley
[17] Rotary Tray Gear
[18] Idler Gear
[19] Idler Pad
[20] Idler Arm
[21] Slide Tray Chassis
[1] Chuck Arm
[2] Rotary Tray
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DVM-1845/745
2. Disassembly Method
(1): Identification (location) No. of parts in the figures
(2): Name of the part
(3): Figure Number for reference
(4): Identification of parts to be removed, unhooked,
unlocked, released, unplugged, unclamped, or
desoldered.
P=Spring, L=Locking Tab, S=Screw, CN=Connector,
W=Washer
*=Unhook, Unlock, Release, Unplug, or Desolder
e.g. 2(S-2) = two Screws (S-2),
2(L-2) = two Locking Tabs (L-2)
(5): Refer to “Reference Notes.”
Reference Notes
1. Disassembly note
Slide the Rotary Tray slowly in the direction of the
front while rotating it.
2. Reassembly note
Align the rails on the Rotary Tray with the slot on
the sensor and align pin A with hole A on the
Rotary Tray.
3. Reassembly note
Re-solder the leads on the Rotary Motor Assembly
or the Detector Switch as shown in Fig. MD4.
4. CAUTION: Electrostatic breakdown of the laser
diode in the optical system block may occur as a
potential difference caused by electrostatic charge
accumulated on cloth, human body, etc., during
unpacking or repair work.
To avoid damage of pickup:
a. Short the three short lands of the FPC cable
with solder before removing the FFC cable
(CN5005). If you disconnect the FFC cable
(CN5005) without shorting them, the laser diode
of the pickup will be destroyed. (“View for A” in
Fig. MD5)
b. Disconnect the two connectors (CN5003 and
CN5005) on the Relay CBA.
5. CAUTION: When Reassembly, confirm the FFC
cable (CN5005) is connected completely. Then
remove the solder from the three short lands of the
FPC cable. (“View for A” in Fig. MD5)
6. Disassembly note
Remove the spring (P-2). Then remove the Slot
Lever with the Rotary Stopper while turning the
Slot Lever in the direction of the arrow as shown in
Fig. MD6.
7. Reassembly note
a. Install the Slot Lever and the Rotary Stopper
with spring (P-2) as shown in “Bottom View of
the Slide Tray” of Fig. MD6.
b. Align pin B on the Slot Lever with slot B on the
Motion Gear.
8. Disassembly note
The Mecha Holder Assembly and the Motion Gear
should be removed together.
9. Reassembly note
The pins, slots or holes on the Mecha Holder
Assembly, the Motion Gear and the Slide Tray align
as follows:
• Pin C on the Mecha Holder Assembly with hole B
on the Slide Tray Chassis
• Pin D on the Mecha Holder Assembly with slot C
on the Motion Gear
• Pin E on the Mecha Holder Assembly with
cavity A on the Slide Tray Chassis
• Slot A on the Mecha Holder Assembly with rib A
on the Slide Tray Chassis
ID/
LOC
.No.
PART
REMOVAL
Fig.
No.
REMOVE/*UNHOOK/
UNLOCK/RELEASE/
UNPLUG/DESOLDER
Note
[1] Chuck Arm
MD1
(S-1), 2(W-1), (P-1),
Magnet, Yoke,
Clamper
-
[2] Rotary Tray
MD2 ----------
1
2
[3] Plate Holder 2 MD3 2(S-2), (S-3)
-
[4] Plate Holder 3 MD3 2(S-4)
-
[5] Plate Spring
MD4 (S-5)
-
[6] Belt L
MD4 ----------
-
[7] Gear Plate
MD4 3(S-6), (S-7)
-
[8] Mecha Cable
MD4
6(L-1), *CN5002,
*CN5101, (S-8)
Lead clamper,
Desolder
-
[9] Detector
Switch
MD4 Desolder
3
[10] Rotary Motor
Assembly
MD4 Desolder
3
[11] Relay CBA +
Sensor CBA
MD5 4(S-9), *CN5003,
*CN5005
4
5
[12] Slot Lever
MD6 *(P-2)
6
7
[13] Rotary
Stopper
MD6 ----------
6
7
[14] Mecha Holder
Assembly
MD5
MD6 ----------
4
5
8
9
[15] Motion Gear
MD6 ----------
8
9
[16] Loading
Pulley
MD7 (S-10), (W-2)
-
[17] Rotary Tray
Gear
MD7 ----------
-
[18] Idler Gear
MD7 *(P-3), (S-11), (W-3),
(W-4)
-
[19] Idler Pad
MD7 ----------
-
[20] Idler Arm
MD7 ----------
-
[21] Slide Tray
Chassis
MD7 ----------
-
↓
(1)
↓
(2)
↓
(3)
↓
(4)
↓
(5)
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DVM-1845/745
(W-1)
(W-1)
(S-1)
(P-1)
Clamper
Magnet
Yoke
[1] Chuck Arm
Fig. MD1
1
2
Pin A
Hole A
Rails on the Rotary Tray
Slot on
the sensor
[2] Rotary Tray
Fig. MD2
[3] Plate
Holder 2
[4] Plate
Holder 3
(S-2)
(S-3)
(S-4)
(S-4)
Fig. MD3
[8] Mecha Cable
[8] Mecha
Cable
[9] Detector
Switch
Detector Switch
DC Mini Motor
[10] Rotary Motor
Assembly
[6] Belt L
[7] Gear Plate
[5] Plate Spring
Bottom View of the Slide Tray
(S-6)
(S-8)
Lead
clamper
(S-7)
(S-5)
(L-1)
(L-1)
CN5002
CN5101
yellow
black
blue
red
brown
(L-1)
(S-6)
Desolder
Desolder
Slide Tray
(S-6)
Fig. MD4
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DVM-1845/745
[11] Relay CBA + Sensor CBA
Bottom View of the Slide Tray
Slide Tray
View for A
Short the three short lands by soldering.
(Either of two places.)
FPC Cable
A
(S-9)
(S-9)
CN5003
CN5005
Fig. MD5
Fig. MD6
Pin E
Pin C
Pin B
turn
(P-2)
Pin C
Pin E
Pin D
Pin D
Slot C
Slot B
Slot A
Slot A
Slide Tray
[15] Motion
Gear
[12] Slot
Lever
[13] Rotary
Stopper
[12] Slot Lever
[13] Rotary Stopper
(P-2)
Bottom View of the Slide Tray
Bottom View of the Mecha Holder Assembly
Rib A
Cavity A
Hole B
[14] Mecha Holder Assembly
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DVM-1845/745
Fig. MD7
(P-3)
(W-3)
(W-2)
(W-4)
(S-11)
(S-10)
[17] Rotary
Tray Gear
[20] Idler
Arm
[19] Idler
Pad
[18] Idler
Gear
[16] Loading
Pulley
[21] Slide Tray Chassis
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DVM-1845/745
FLOW CHART NO.2
The fuse blows out.
After servicing, replace the fuse.
Check the presence that the primary component
is leaking or shorted and service it if defective.
Check the presence that the rectifying diode or
circuit is shorted in each rectifying circuit of
secondary side, and service it if defective.
FLOW CHART NO.3
When the output voltage fluctuates.
Yes
No
FLOW CHART NO.4
When buzz sound can be heard in the vicinity of AV circuit.
Check if there is any short-circuit on the rectifying diode and the circuit in each rectifying circuit of the secondary side,
and service it if defective. (D1003, D1006, D1008, D1016, D1030, Q1002, Q1004, Q1011, Q1014, Q1020, Q1022)
Does the photo coupler circuit on the secondary
side operate normally?
Check IC1001, D1012, D1024 and their periphery,
and service it if defective.
Check IC1001, IC1006 and their
periphery, and service it if defective.
FLOW CHART NO.5
-FL is not outputted.
Is -24V voltage supplied to the anode of D1003?
Check D1003 and periphery circuit, and service it
if defective.
Check if there is any leak or short-circuit
on the loaded circuit, and service it if defective.
Yes
No
FLOW CHART NO.1
The power cannot be turned on.
Is the fuse normal?
Is normal state restored when once unplugged
power cord is plugged again after several seconds?
Is the CHG +3.3V line voltage normal?
Is each voltage of the secondary side normal?
See FLOW CHART No.2
Check if there is any leak or shor-circuiting on the
primary circuit component, and service it if defective.
(Q1031, Q1003, T1001, D1001, D1002, D1004,
D1005, D1011, C1003, C1005)
Check each rectifying circuit of the secondary circuit
and service it if defective.
Yes
Yes
Yes
Is the voltage of 3.3V supplied to pin(1) of IC3001?
Yes
When pressing POWER button (SW2101), is the
voltage of 0V supplied to pin(42) of IC3001?
Yes
Replace IC3001.
Yes
No
No
No
No
Check POWER button (SW2101) and their
periphery, and service it if defective.
No
Check CHG+3.3V line and service it if defective.
See FLOW CHART No.2
No
FLOW CHART NO.2
The fuse blows out.
After servicing, replace the fuse.
Check the presence that the primary component
is leaking or shorted and service it if defective.
Check the presence that the rectifying diode or
circuit is shorted in each rectifying circuit of
secondary side, and service it if defective.
FLOW CHART NO.3
When the output voltage fluctuates.
Yes
No
FLOW CHART NO.4
When buzz sound can be heard in the vicinity of AV circuit.
Check if there is any short-circuit on the rectifying diode and the circuit in each rectifying circuit of the secondary side,
and service it if defective. (D1003, D1006, D1008, D1016, D1030, Q1002, Q1004, Q1011, Q1014, Q1020, Q1022)
Does the photo coupler circuit on the secondary
side operate normally?
Check IC1001, D1012, D1024 and their periphery,
and service it if defective.
Check IC1001, IC1006 and their
periphery, and service it if defective.
FLOW CHART NO.5
-FL is not outputted.
Is -24V voltage supplied to the anode of D1003?
Check D1003 and periphery circuit, and service it
if defective.
Check if there is any leak or short-circuit
on the loaded circuit, and service it if defective.
Yes
No
FLOW CHART NO.1
The power cannot be turned on.
Is the fuse normal?
Is normal state restored when once unplugged
power cord is plugged again after several seconds?
Is the CHG +3.3V line voltage normal?
Is each voltage of the secondary side normal?
See FLOW CHART No.2
Check if there is any leak or shor-circuiting on the
primary circuit component, and service it if defective.
(Q1031, Q1003, T1001, D1001, D1002, D1004,
D1005, D1011, C1003, C1005)
Check each rectifying circuit of the secondary circuit
and service it if defective.
Yes
Yes
Yes
Is the voltage of 3.3V supplied to pin(1) of IC3001?
Yes
When pressing POWER button (SW2101), is the
voltage of 0V supplied to pin(42) of IC3001?
Yes
Replace IC3001.
Yes
No
No
No
No
Check POWER button (SW2101) and their
periphery, and service it if defective.
No
Check CHG+3.3V line and service it if defective.
See FLOW CHART No.2
No
TROUBLESHOOTING
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DVM-1845/745
FLOW CHART NO.7
P-ON+5V is not outputted. (P-ON+10V is outputted normally.)
Is the "H" signal inputted into the base of Q1004?
Replace Q1004.
Check R1068 and D1046 and service it if defective.
Yes
No
FLOW CHART NO.8
P-ON+3.3V is not outputted. (P-ON+10V is outputted normally.)
Is 3.3V voltage supplied to the collector of Q1011?
Replace Q1011, R1066 and R1067.
Check D1008, C1007, C1038, L1007 and
the periphery circuit, and service it if defective.
Yes
No
FLOW CHART NO.9
CHG+5V is not outputted.
Is EV+10V outputted normally?
Check Q1014, D1047 and the periphery circuit,
and service it if defective.
Refer to "FLOW CHART NO.6"
Yes
No
FLOW CHART NO.6
P-ON+10V (EV+10V) is not outputted.
Is 10V voltage supplied to the emitter of Q1002?
Is the voltage of base on Q1002 lower than the
voltage of emitter on Q1002 when turning the power on?
Replace Q1002.
Check D1030, C1035, C1048, L1009 and
the periphery circuit, and service it if defective.
Check Q1016 and service it if defective.
Yes
Yes
No
No
FLOW CHART NO.10
EV+1.2V is not outputted.
Is 3.3V voltage supplied to Pin(3) of IC1003?
Replace IC1003.
Check D1006, C1014, C1050, L1008, Q1022 and
the periphery circuit, and service it if defective.
Yes
No
FLOW CHART NO.11
EV+3.3V is not outputted.
Is 3.3V voltage supplied to emitter of Q1020?
Is the "L" signal inputted to base of Q1012?
Check Q1012, Q1020, R1050, R1088 and
service it if defective.
Replace IC3001.
Check the circuit between Pin(9)
of IC3001 and base of Q1012
and service it if defective.
Check D1008, C1007, C1038, L1007 and
the periphery circuit, and service it if defective.
Is the "L" signal outputted into Pin(9) of IC3001?
Yes
Yes
Yes
No
No
No
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DVM-1845/745
Yes
No
FLOW CHART NO.13
The key operation is not functioning.
Are the contact point and the installation state of the
key switches (SW2101, 2102, 2203 - 2215) normal?
Is the control voltage normally supplied to pins(40,
41, 42) of IC3001?
Check the switches (SW2101, 2102, 2203 - 2215)
and their periphery, and service it if defective.
No
Reinstall the switches (SW2101, 2102, 2203 - 2215)
correctly or replace the poor switch.
Replace IC3001.
Yes
Yes
Yes
No
No
FLOW CHART NO.12
The fluorescent display tube does not light up.
Is 3.3V voltage supplied to Pin(13) and
Pin(43) of IC2001?
Is the voltage of approximately -19V
supplied to Pin(30) of IC2001?
Replace the fluorescent display tube or IC2001.
Check the P-ON+3.3V line and service it if defective.
Check the -FL line and service it if defective.
42pin
41pin
40pin
KEY-1
KEY-2
KEY-3
0V
SW2101
0.7V
APPROX.
APPROX.
1.3V
APPROX.
2.0V
APPROX.
2.7V
APPROX.
3.3V
APPROX.
POWER
SW2206
SKIP DOWN
SW2211
DISC-3
SW2102
HDMI
SW2207
SKIP UP
SW2212
DISC-4
SW2203
PLAY
SW2204
PAUSE
SW2209
DISC-5
SW2214
DISC-1
SW2208
DISC CHANGE
SW2213
DISC-2
IC3001
Terminal Voltage of Pins (40 - 42) on IC3001
VOLTAGE
SW2205
STOP
SW2210
SKIP
SW2215
OPEN/CLOSE
(KEY OFF)
(KEY OFF)
(KEY OFF)
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DVM-1845/745
FLOW CHART NO.17
[No Disc] indicated. (When the focus error occurs.)
Replace the DVD Main CBA Unit.
No improvement can be found.
Original DVD Main CBA Unit is poor.
Replace the DVD Mechanism.
No
Yes
Yes
FLOW CHART NO.16
The disc tray cannot be opened and closed.
Replace the DVD Main CBA Unit.
Original DVD Main CBA Unit is poor.
Replace the DVD Mechanism.
No improvement can be found.
No
Yes
FLOW CHART NO.15
The disc tray cannot be opened and closed. (It can be done using the remote control unit.)
Is the normal control voltage inputted to Pin(40) of
IC3001?
Refer to "FLOW CHART NO.16"
Replace the "OPEN/CLOSE" button (SW2215).
No
FLOW CHART NO.14
No operation is possible from the remote control unit.
Operation is possible from the DVD, but no
operation is possible from the remote control unit.
Replace the infrared remote control receiver (RM2001).
Or replace the remote control unit.
Check the line between Pin(1) of RM2001 and
Pin(14) of CN3102, and service it if defective.
Is the "L" pulse sent out Pin(1) terminal of receiver
(RM2001) when the infrared remote control is activated?
Is the "L" pulse supplied to the Pin(14) of CN3102?
Replace the DVD Main CBA Unit or DVD Mechanism.
Yes
Is 5V voltage supplied to the Pin(3) terminal of
the infrared remote control receiver (RM2001)?
Yes
No
Check CHG+5V line and service it if defective.
No
No
Yes
Check the line between Pin(1) of RM2001 and
Pin(6) of IC3001, and service it if defective.
Is the "L" pulse supplied to the Pin(6) of IC3001?
Yes
No
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DVM-1845/745
FLOW CHART NO.20
Both functions of picture and sound do not operate normally.
Replace the DVD Main CBA Unit.
Replace the DVD Mechanism.
No
Yes
No improvement can be found.
Original DVD Main CBA Unit is poor.
FLOW CHART NO.18
[No Disc] indicated. (When the focus servo is not functioning.)
FLOW CHART NO.19
[No Disc] indicated. (When the laser beam does not light up.)
Replace the DVD Main CBA Unit.
Replace the DVD Mechanism.
No
Yes
Replace the DVD Main CBA Unit.
Replace the DVD Mechanism.
No
Yes
No improvement can be found.
Original DVD Main CBA Unit is poor.
No improvement can be found.
Original DVD Main CBA Unit is poor.
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DVM-1845/745
Is 5V voltage applied to the Pin(4, 12) of IC1402
and the Pin(4) of IC1403?
Replace IC1402
or IC1403.
Check P-ON+5V line and
service it if detective.
Are the video signals outputted to each pin
of IC1402 and IC1403?
Yes
No
Yes
Yes
No
IC1402 13PIN S-Y(I/P)
IC1402 11PIN Pb/Cb
IC1402 10PIN Pr/Cr
IC1403 5PIN S-Y(I)
IC1403 6PIN CVBS
IC1403 7PIN S-C
Check the periphery of JK1404 from Pins (10, 11,
13) of IC1402 and service it if detective.
Check the periphery of JK1404 from Pin(6) of
IC1403 and service it if detective.
Check the periphery of JK1401 from
Pin (5) of IC1403 and service it if detective.
Check the periphery of JK1401 from
Pin (7) of IC1403 and service it if detective.
Are the video signals outputted to the specific
output terminal?
Are the component video signals outputted to the
VIDEO OUT terminal (JK1404)?
Are the luminance signals outputted to the
S-OUT terminal (JK1401)?
Are the chroma signals outputted to the
S-OUT terminal (JK1401)?
No
No
No
No
Are the composite video signals outputted to
the VIDEO OUT terminal (JK1404)?
FLOW CHART NO.21
Picture does not appear normally.
Set the disc on the disc tray, and playback.
Are the video signals outputted to each pin of
CN1601 on the AV CBA?
Replace the DVD Main CBA Unit or DVD Mechanism.
Check the line between each pin of CN1601 and
each pin of IC1402 and IC1403 on the AV CBA,
and service it if detective.
CN1601 7PIN → IC1402 3PIN S-Y(I/P)
CN1601 5PIN → IC1402 6PIN Pb/Cb
CN1601 3PIN → IC1402 8PIN Pr/Cr
CN1601 1PIN → IC1403 3PIN S-Y(I)
CN1601 9PIN → IC1403 1PIN S-C
Are the video signals shown above inputted into
each pin of IC1402 and IC1403?
Yes
No
No
CN1601 1PIN S-Y(I)
CN1601 3PIN Pr/Cr
CN1601 5PIN Pb/Cb
CN1601 7PIN S-Y(I/P)
CN1601 9PIN S-C
IC1402 3PIN S-Y(I/P)
IC1402 6PIN Pb/Cb
IC1402 8PIN Pr/Cr
IC1403 1PIN S-C
IC1403 3PIN S-Y(I)
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DVM-1845/745
FLOW CHART NO.22
Audio is not outputted.
Set the disc on the disc tray, and playback.
Are the analog audio signals outputted to each pin
of CN1601 on AV CBA?
Is the "H" level mute signal outputted to CN1601
on AV CBA ?
CN1601 11PIN AUDIO(L)
CN1601 13PIN AUDIO(R)
CN1601 18PIN AUDIO(R)-MUTE
CN1601 12PIN AUDIO(L)-MUTE
IC1201 1PIN AUDIO(L)
IC1201 7PIN AUDIO(R)
IC1201 2PIN AUDIO(L)
IC1201 6PIN AUDIO(R)
Replace the DVD Main CBA Unit or DVD Mechanism.
Replace the DVD Main CBA Unit or DVD Mechanism.
Replace IC1201.
Check the periphery between Pins(1,7) of IC1201
and JK1201, and service it if defective.
Check each line between each pin of CN1601
and each pin of IC1201 on AV CBA, and service it
if defective.
CN1601 11PIN → IC1201 2PIN AUDIO(L)
CN1601 13PIN → IC1201 6PIN AUDIO(R)
Are the analog audio signals inputted to each pin
of IC1201.
Are the analog audio signals outputted to each pin
of IC1201?
Are the audio signals outputted to the specific
output terminal?
Are the audio signals outputted to the audio
terminal (JK1201)?
Yes
Yes
Yes
Yes
No
No
No
No
No
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26
DVM-1845/745
FLOW CHART NO.23
Rotary tray does not function.
Is the normal control voltage inputted to pins
(40, 41) of IC3001? For each terminal voltage,
refer to FLOW CHART No.13
Is the voltage of 3.3V supplied to pin(1) of IC3001?
Is the normal control voltage outputted to pins(2,4)
of IC3003?
Check the switches (SW2208, 2209, 2211 - 2214)
and their periphery, and service it if defective.
Replace IC3001.
Replace Rotary Motor.
Check EV+10V line and
service it if detective.
Check CHG 3.3V line and service it if detective.
Is the normal control voltage outputted to pins
(22, 23) of IC3001?
Is the voltage of 10V supplied to pin(6) of IC3003?
Replace IC3003.
Yes
Yes
Yes
Yes
No
Yes
No
No
No
No
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27
DVM-1845/745
BLOCK DIAGRAMS
System Control-1 Block Diagram
1 NOTE:
Either IC461 or IC462 is used for DVD MAIN CBA UNIT.
TO AUDIO
BLOCK DIAGRAM
CN301
CN401
54
FP-DIN
6 FP-DIN
TO SYSTEM
CONTROL-2
BLOCK DIAGRAM
CN1101
TO SYSTEM
CONTROL-2
BLOCK DIAGRAM
CN3301
56
FP-STB
5 FP-STB
53
FP-DOUT
7 FP-DOUT
55
FP-CLK
4 FP-CLK
49
REMOTE1
20 REMOTE1
IC301
(SERVO DRIVE)
IC101
(MICRO CONTROLLER)
+-
+-
+-
+-
+-
+-
+-
SLED
MOTOR
DRIVE
FOCUS
ACTUATOR
DRIVE
SPINDLE
MOTOR
DRIVE
TRACKING
ACTUATOR
DRIVE
126
TRAY-IN
SLD
67
SPDL
66
TRACKING
DRIVE
127 FOCUS DRIVE
64
57
ADAC-MD
58
ADAC-MC
59
ADAC-ML
ADAC-MC
ADAC-ML
AUDIO-MUTE
ADAC-MD
AUDIO-MUTE
SPINDLE
MOTOR
SLED
MOTOR
VREF
RESET
70
RESET
IC461
2
1
+3.3V
IC202
(OP AMP)
15
16
14
13
12
11
17
18
23
6
4
5
3
1
2
25
24
27
26
80
V-SENSE
121 SP-ROT
+5V
14
13
9
8
10
12
6
7
5
124 FD-OFST
123 TD-OFST
122 SL-ADS
RESET
IC462
1
3
+3.3V
1
DVD MAIN CBA UNIT
RELAY CBA
PICK-UP
UNIT
MECHA CBA
CHANGER CBA
FS
TS
15
15
SP(+)
14
14
SP(-)
12
12
SL(-)
11
11
SL(+)
2
2
FS(+)
3
3
FS(-)
1
1
TS(+)
4
4
TS(-)
10
12
9
13
14
11
12
9
13
14
11
1
2
4
5
2
3
1
4
6
10
TRAY-IN
M
M
CN5005
CN5004
CN5003
CN5001
CN3001
CN3301
CN301
CN201
TRAY-IN
8
+3.3V
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28
DVM-1845/745
System Control-2 Block Diagram
CN1001
CN3102
REMOTE
SENSOR
LED DRIVE
KEY SWITCH
KEY SWITCH
RM2001
SWITCH CBA
SENSOR CBA
RELAY CBA
IC3004 (LOADING MOTOR DRIVE)
Q3002
Q3504
Q3005
Q3003
AV CBA
FUNCTION CBA
CHANGER CBA
ROTARY
MOTOR
Q5101
Q5102
IC3001
(CH MICROPROCESSOR)
+3.3V
+3.3V
DRIVE
CONTROL
LOGIC
1 REMOTE1
CN1102
10 POWCON
10
11 PWCHK
11
9 PWSW
9
14 REMOTE2 14
CN3301
5 FP-STB
6 FP-DIN
7 FP-DOUT
4 FP-CLK
CN2201
D2205 5
CN2101
12 KEY-1
12
13 KEY-2
13
10 LD2
10
11 LD1
11
8 LD4
8
9 LD3
9
6 LP1
6
7 LD5
7
4 LP3
4
5 LP2
5
2 LP5
2
3 LP4
3
14 KEY-3
14
POWER SWITCH CBA
CN2203
Q2089
Q2088
Q2011
CN2103
4 KEY-0
4
5 KEY-1
5
3
HDMI-LED
3
2
STANDBY-LED 2
1
POWER-LED 1
KEY-1
LP1
LD5
LD4
LD3
LD2
LD1
KEY-2
KEY-3
D2181
HDMI
SW3102 TRAY CLOSE
SW3101
TRAY OPEN
DISC SENSOR
RT SENSOR
D2182
POWER
STANDBY
17
9
6
42
41
40
25
38
13
16
5
39
CN3101
CN3004
1 ST-CLOSE
1
2 GND
2
CN5101
CN5002
1 D-SENS-A
1
2 RT-SENS-A 2
CN5001
CN3001
8 D-SENS-A
8
6 RT-SENS-A 6
CN5001
CN3001
7 RM2
7
5 RM1
5
CN5001
CN3001
1 CHK-ON
1
3 CHK-OFF
3
3 ST-OPEN
3
M
LOADING
MOTOR
M
CN5002
RM2
9
RM1
8
CN5002
CHK-ON
6
CHK-OFF
7
GND
5
CN3003
LM+
1
LM-
2
4
2
9
7
1
IC3003 (ROTARY MOTOR DRIVE)
DRIVE
4
2
9
7
1
14
10
22
23
24
Q3006
Q3503
AMP
AMP
UP/DOWN
SW
CONTROL
LOGIC
ST-OP/CL
FP-RIN
FP-FIN
ST-GAIN
RT-RIN
RT-FIN
RT-GAIN
D-SENS-A
RT-SENS-A
CHK-ON/OFF
PWCHK
PWSW
7
37
36
35
FP-STB
FP-DIN
FP-DOUT
FP-CLK
REMOTE
HDMI-IND
31
32
8
VFD-STB
RESET
VFD-DIN
VFD-DOUT
VFD-CLK
9
7
6
8
VFD-STB
VFD-DIN
VFD-DOUT
VFD-CLK
LP2
Q2007
Q2008
Q2010
Q2009
LP3
LP4
LP5
GRID
SEGMENT
IC2001
FRONT
PANEL
CONTROL
19
14
15
16
17
18
20
21
22
42
36
~
a
b
c
d
e
f
g
h
i
1G
7G
~
FIP
FL2001
18
JK3501
REMOTE
CONTROL-IN
REMOTE
CONTROL-OUT
IC3510
(AMP)
1
7
AMP
26
27
28
29
34
30
1
2
3
4
TO SYSTEM
CONTROL-1
BLOCK DIAGRAM
CN301
TO
POWER SUPPLY
BLOCK DIAGRAM
TO SYSTEM
CONTROL-1
BLOCK DIAGRAM
CN401
POWCON
PWCHK
PWSW
Q2005
Q2003
Q2001
Q2006
Q2004
Q2002
33
19
20
X3001
IC3002
8MHz
OSC
1
2
RESET
CHG+3.3V
D2204 4
D2203 3
D2202 2
D2201 1
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29
DVM-1845/745
Digital Signal Process Block Diagram
CN201
CN201
IC101 (MICRO CONTROLLER)
CD/DVD
DETECTOR
Q251,Q252
AMP
Q253,Q254
AMP
RF
SIGNAL
PROCESS
CIRCUIT
DVD/CD
FORMATTER
AUDIO
I/F
VIDEO
I/F
NTSC/PAL
ENCODER
DMA
BCU
INST.
ROM
32BIT
CPU
DATA
RAM
INTERRUPT
CONTROLLER
WATCH DOG
TIMER
CPU
I/F
TIMER
DECODER
I/F
CPU
I/F
READ
MEMORY
DATA
RAM
DSP
DECODER
I/O
PROCESSOR
INST.
ROM
DATA
RAM
INST.
ROM
SERIAL
D/A
GENERAL
I/O
INTERRUPT
CONTROLLER
TIMER
WATCH DOG
TIMER
REMOTE
CONTROL
32BIT CPU
STREAM
I/F
EXTERNAL
MEMORY
I/F
SDRAM
ECC
UMAC
100
115
116
113
114
106
104
105
103
79
GND(DVD-PD)
63
GND(CD-PD)
62
DEBUG
BCU
INST
CACHE
DATA
CACHE
D/A
131
139
Y(I/P)
C
VIDEO-Y(I/P)
VIDEO-C
SDRAM ADDRESS(0-10)
VIDEO SIGNAL
SDRAM DATA(0-15)
PICK-UP
UNIT
DVD MAIN CBA UNIT
TO
VIDEO
/AUDIO
BLOCK
DIAGRAM
TO
VIDEO
/AUDIO
BLOCK
DIAGRAM
IC501 (SDRAM)
SDRAM DATA(0-15)
SDRAM ADDRESS(0-10)
194
209
~
2
13
42
53
~
~
22
26
29
34
~
~
159
178
~
99
98
97
AUDIO SIGNAL
D/A
D/A
129
130
Pr/Cr
Pb/Cb
VIDEO-Pr/Cr
VIDEO-Pb/Cb
EXADT (0-15), EADR (16-19)
FLASH
ROM
~
1
9
16
25
48
~
IC103 (FLASH ROM)
29
36
38
45
~
~
D TYPE
LATCH
IC105 (LATCH)
2
9
~
12
19
~
D TYPE
LATCH
IC104 (LATCH)
2
9
~
12
19
~
EXADT (0-15), EADR (16-19)
EXADT (1-8)
EXADT (0, 9-15)
EADR (1-8)
EADR (0, 9-15)
EADR (0-15)
EADR (16-19)
EXADT (0-15)
YC(0-7)
9
14
17
18
~
~
I2C-SDA
I2C-SCL
I2C-SDA
I2C-SCL
46
47
152
SPDIF
151
PCM-DATA0
149
PCM-BCK
150
PCM-LRCK
148
PCM-SCLK
D/A
138
Y(I)
VIDEO-Y(I)
TO
AUDIO
BLOCK
DIAGRAM
SPDIF
PCM-DATA0
PCM-BCK
PCM-LRCK
PCM-SCLK
16
16
C
18
18
D
17
17
A
15
15
B
19
19
CD/DVD
10
10
CD-LD
8
8
DVD-LD
7
7
PD-MONI
6
6
GND(DVD-PD)
5
5
GND(CD-PD)
9
9
GND(LD)
10
CD-LD
8
DVD-LD
9
GND(LD)
7
PD-MONI
6
GND(DVD-PD)
5
GND(CD-PD)
CN5004
CN5005
16
C
18
D
17
A
CN5005
15
B
19
CD/DVD
CN5004
RELAY CBA
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DVM-1845/745
Video / Audio Block Diagram
AUDIO SIGNAL
VIDEO SIGNAL
CN601
12
7
VIDEO-Y(I/P)
10
9
VIDEO-C
VIDEO-C
VIDEO-Y(I/P)
JK1401
S-VIDEO OUT
CN1601
14
5
VIDEO-Pb/Cb
VIDEO-Pb/Cb
VIDEO-Pr/Cr
16
3
VIDEO-Pr/Cr
TO DIGITAL
SIGNAL PROCESS
BLOCK DIAGRAM
Y
C
AV CBA
DVD MAIN CBA UNIT
IC1402 (VIDEO DRIVER)
4dB
AMP
2dB
AMP
LPF
DRIVER
11
4dB
AMP
2dB
AMP
LPF
DRIVER
6
10
4dB
AMP
2dB
AMP
LPF
DRIVER
8
3
13
IC1403 (VIDEO DRIVER)
4dB
AMP
2dB
AMP
LPF
DRIVER
2dB
AMP
DRIVER
4dB
AMP
2dB
AMP
LPF
DRIVER
3
1
5
6
7
WF2
WF1
18
1
VIDEO-Y(I)
VIDEO-Y(I)
JK1404
VIDEO OUT
(COMPOSITE)
WF3
VIDEO-Pb/Cb
OUT
VIDEO-Y
OUT
VIDEO-Pr/Cr
OUT
4
3
1
2
TMDS DATA2-
CNF01
HDMI-CONNECTOR
TMDS DATA2+
TMDS DATA1-
TMDS DATA1+
TMDS DATA0-
TMDS DATA0+
TMDS CLOCK+
TMDS CLOCK-
SDA
SCL
HOT PLUG
DETECT
ICF09 (HDMI INTERFACE)
33
41
PCM-SCLK
PCM-LRCK
45
PCM-BCK
38
18
20
14
16
12
10
22
24
120
119
121
6
4
9
7
10
12
3
2
3
6
5
1
15
19
16
PCM-DATA0
113
114
I2C-SCL
I2C-SDA
TO DIGITAL
SIGNAL PROCESS
BLOCK DIAGRAM
IIC
I/F
VIDEO
I/F
DDC
I/F
ICF04
(3.3V<-->5V CONVERTER)
AUDIO
I/F
HDCP
CIPHER/
ENCRYPTOR
TMDS
ENCODER
AV
CONTROLLER
TMDS
TRANSMITTER
YC(0-7)
81
83
~
86
90
~
HPD
QF01, QF02
SWITCHING
43
SPDIF
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31
DVM-1845/745
Audio Block Diagram
AMP
Q1351
IC1201
Q1201
Q1202
+10V
(AMP)
CN601
CN1601
8
11
AUDIO(L)
6
13
AUDIO(R)
1
18
AUDIO(R)-MUTE
1
2
6
7
5
PCM-BCK
SPDIF
PCM-DATA0
PCM-LRCK
ADAC-MD
ADAC-MC
ADAC-ML
PCM-SCLK
4
15
SPDIF
7
12
AUDIO(L)-MUTE
+3.3V
Q1204
3
+3.3V
Q1203
WF6
WF4
WF5
AUDIO SIGNAL
TO
SYSTEM
CONTROL-1
BLOCK
DIAGRAM
TO
SYSTEM
CONTROL-1
BLOCK
DIAGRAM
TO
DIGITAL
SIGNAL
PROCESS
BLOCK
DIAGRAM
DVD MAIN CBA UNIT
AV CBA
JK1202
IC1204
JK1201
IC601 (AUDIO DAC)
15
14
16
1
7
6
8
4
3
2
5
AUDIO
SERIAL
PORT
SERIAL
CONTROL
PORT
4X/8X
OVERSAMPLING
DIGITAL FILTER
/FUNCTION
CONTROLLER
ENHANCED
MULTI-LEVEL
DELTA-SIGMA
MODULATOR
DAC
LPF+AMP L-CH
R-CH
LPF+AMP
DAC
ZERO DETECT
SYSTEM CLOCK
MANAGER
AUDIO(L)-
OUT
AUDIO(R)-
OUT
DIGITAL
AUDIO OUT
(COAXIAL)
DIGITAL
AUDIO OUT
(OPTICAL)
TO
DIGITAL
SIGNAL
PROCESS
BLOCK
DIAGRAM
AUDIO-MUTE
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32
DVM-1845/745
Power Supply Block Diagram
AC1001
AC CORD
F1001
1A/250V
LINE
FILTER
L1001
D1001, D1002
D1004, D1005
Q1003
Q1008
Q1031
2
4
7
3
4
IC1001
ERROR
VOLTAGE DET
T1001
11
12
13
15
14
16
17
18
IC1006
(SHUNT REGULATOR)
SWITCHING
D1008
D1003
Q1002
Q1016
D1006
RECTIFIER
D1030
RECTIFIER
D1016
RECTIFIER
SWITCHING
CONTROL
LATCH
REG
1
2
6
BRIDGE
RECTIFIER
HOT
AV CBA
CN1001
CN1102
+1.2V
REG.
IC1003
HOT CIRCUIT. BE CAREFUL.
19 EV+1.5V
P-ON+10V
18 EV+1.5V
17 EV+3.3V
16 EV+3.3V
12 P-ON+5V
20 CHG+5V
11 EV+10V
10 EV+10V
2 CHG+3.3V
15 P-ON+3.3V
14 P-ON+3.3V
13 P-ON+3.3V
1 F1
2 F2
3 -FL
4 EV+10V
5 CHG+5V
7 P-ON+3.3V
8 CHG+3.3V
6 P-ON+5V
P-ON+5V
CHG+3.3V
CHG+5V
Q1005
Q1015
Q1004
Q1020
Q1012
Q1014
Q1011
SCHOTTKY
BARRIER
SCHOTTKY
BARRIER
TO DVD MAIN
CBA UNIT
CN401
TO
CHANGER
CBA CN3102
A V
F
TO SYSTEM
CONTROL-2
BLOCK DIAGRAM
PWSW
POWCON
PWCHK
Q1022
CAUTION !
Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.
If Main Fuse (F1001) is blown , check to see that all components in the power supply
circuit are not defective before you connect the AC plug to the AC power supply.
Otherwise it may cause some components in the power supply circuit to fail.
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
"Ce symbole reprèsente un fusible à fusion rapide."
CAUTION !
For continued protection against fire hazard,
replace only with the same type fuse.
ATTENTION : Pour une protection continue les risqes
d'Incele n'utiliser que des fusible de même type.
Risk of fire-replace fuse as marked.
"This symbol means fast operating fuse."
A V
F
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DVM-1845/745
SCHEMATIC DIAGRAMS / CBA’S AND TEST POINTS
Standard Notes
WARNING
Many electrical and mechanical parts in this chassis
have special characteristics. These characteristics
often pass unnoticed and the protection afforded by
them cannot necessarily be obtained by using
replacement components rated for higher voltage,
wattage, etc. Replacement parts that have these
special safety characteristics are identified in this
manual and its supplements; electrical components
having such features are identified by the mark “#” in
the schematic diagram and the parts list. Before
replacing any of these components, read the parts list
in this manual carefully. The use of substitute
replacement parts that do not have the same safety
characteristics as specified in the parts list may create
shock, fire, or other hazards.
Notes:
1.
Do not use the part number shown on these
drawings for ordering. The correct part number is
shown in the parts list, and may be slightly
different or amended since these drawings were
prepared.
2.
All resistance values are indicated in ohms
(K = 103, M = 106).
3.
Resistor wattages are 1/4W or 1/6W unless
otherwise specified.
4.
All capacitance values are indicated in µF
(P = 10-6 µF).
5.
All voltages are DC voltages unless otherwise
specified.
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34
DVM-1845/745
LIST OF CAUTION, NOTES, AND SYMBOLS USED IN THE SCHEMATIC DIAGRAMS ON
THE FOLLOWING PAGES:
1. CAUTION:
FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH THE
SAME TYPE FUSE.
ATTENTION: POUR UNE PROTECTION CONTINUE LES RISQES D'INCELE N'UTILISER
QUE DES FUSIBLE DE MÊME TYPE.
RISK OF FIRE-REPLACE FUSE AS MARKED.
2. CAUTION:
Fixed Voltage (or Auto voltage selectable) power supply circuit is used in this unit.
If Main Fuse (F1001) is blown, first check to see that all components in the power supply circuit are not
defective before you connect the AC plug to the AC power supply. Otherwise it may cause some components
in the power supply circuit to fail.
3. Note:
1.
Do not use the part number shown on the drawings for ordering. The correct part number is shown in the
parts list, and may be slightly different or amended since the drawings were prepared.
2.
To maintain original function and reliability of repaired units, use only original replacement parts which are
listed with their part numbers in the parts list section of the service manual.
4. Voltage indications for PLAY and STOP mode on the schematics are as shown below:
5. How to read converged lines
6. Test Point Information
A V
F
This symbol means fast operating fuse.
Ce symbole represente un fusible a fusion rapide.
2
3
1
5.0
(2.5)
5.0
The same voltage for
both PLAY & STOP modes
Indicates that the voltage
is not consistent here.
PLAY mode
STOP mode
(Unit: Volt)
3
2
1
A
B
C
D
1-B1
1-D3
AREA D3
AREA B1
1-D3
Distinction Area
Line Number
(1 to 3 digits)
Examples:
1. "1-D3" means that line number "1" goes to the line number
"1" of the area "D3".
2. "1-B1" means that line number "1" goes to the line number
"1" of the area "B1".
: Indicates a test point with a jumper wire across a hole in the PCB.
: Used to indicate a test point with a component lead on foil side.
: Used to indicate a test point with no test pin.
: Used to indicate a test point with a test pin.
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DVM-1845/745
DVD Main 1/4 Schematic Diagram
1 NOTE:
Either IC461 or IC462 is used for DVD MAIN CBA UNIT.
w w w
.
x i a o y u 1 6 3 .
c o m
Q Q
3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
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DVM-1845/745
DVD Main 2/4 Schematic Diagram
w w w
.
x i a o y u 1 6 3 .
c o m
Q Q
3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
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DVM-1845/745
DVD Main 3/4 Schematic Diagram
w w w
.
x i a o y u 1 6 3 .
c o m
Q Q
3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
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DVM-1845/745
DVD Main 4/4 Schematic Diagram
w w w
.
x i a o y u 1 6 3 .
c o m
Q Q
3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
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DVM-1845/745
AV 1/2 Schematic Diagram
CAUTION !
Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.
If Main Fuse (F1001) is blown , check to see that all components in the power supply
circuit are not defective before you connect the AC plug to the AC power supply.
Otherwise it may cause some components in the power supply circuit to fail.
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
"Ce symbole reprèsente un fusible à fusion rapide."
CAUTION !
For continued protection against fire hazard,
replace only with the same type fuse.
ATTENTION : Pour une protection continue les risqes
d'Incele n'utiliser que des fusible de même type.
Risk of fire-replace fuse as marked.
"This symbol means fast operating fuse."
A V
F
w w w
.
x i a o y u 1 6 3 .
c o m
Q Q
3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
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DVM-1845/745
AV 2/2 Schematic Diagram
w w w
.
x i a o y u 1 6 3 .
c o m
Q Q
3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
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DVM-1845/745
Changer 1/2 , Function , Power Switch & Switch Schematic Diagram
w w w
.
x i a o y u 1 6 3 .
c o m
Q Q
3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
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DVM-1845/745
Changer 2/2 Schematic Diagram
a
d
g
c
b
e
f
h
h
h
h
A
ALL
RPT
SACD
CD
DVD A
TL./GR.
TR./CP.
B
PSCAN
5G
4G
3G
2G
1G
7G
6G
7G
6G
5G
4G
3G
2G
1G
a
b
c
d
e
f
g
c
d
e
f
f
g
c
d
e
f
g
c
d
e
f
g
c
d
e
f
g
c
d
e
f
g
h
h
h
i
a
b
c
d
e
g
a
b
a
b
a
b
a
b
a
b
c
d
e
f
g
a
b
FL2001 MATRIX CHART
SACD
ALL
DVD
RPT.
CD
A
TL./GR.
TR./CP.
A B
PSCAN
w w w
.
x i a o y u 1 6 3 .
c o m
Q Q
3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
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DVM-1845/745
Relay , Sensor , Mecha & Pick Up Unit Schematic Diagram
w w w
.
x i a o y u 1 6 3 .
c o m
Q Q
3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
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44
DVM-1845/745
WAVEFORMS
WF6
WF1
WF3
WF4
WF5
WF2
Pin 15 of CN1601
Pin 7 of CN1601
C1402 PLUS LEAD
Pin 11 of CN1601
Pin 13 of CN1601
Pin 9 of CN1601
20µs
0.2V
VIDEO-Y
VIDEO-C
0.2V
20µs
VIDEO-CVBS
0.5V
20µs
AUDIO(L)
0.5V
0.5ms
AUDIO(R)
0.5V
0.5ms
SPDIF
1V
0.1µs
NOTE:
Measuring Disc
DVD: DVDT-S01
CD : TCD-784
Input Signal
VIDEO: 75% NTSC COLOR BAR
AUDIO: 1KHz, 0dB
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DVM-1845/745
WIRING DIAGRAM
SENSOR CBA
M
LOADING
MOTOR
DVD MAIN CBA UNIT
RELAY CBA
TS(+)
1
1
FS(+)
2
2
FS(-)
3
3
TS(-)
4
4
GND(CD-PD)
5
5
GND(DVD-PD) 6
6
PD-MONI
7
7
DVD-LD
8
8
GND(LD)
9
9
CD-LD
10
10
GND
11
11
NU
12
12
VREF
13
13
NU
14
14
B
15
15
C
16
16
A
17
17
D
18
18
CD/DVD
19
19
P-ON+5V
20
20
CN5004
CN201
AC CORD
AUDIO-L
OUT
AUDIO-R
OUT
VIDEO
OUT
VIDEO-Pr/Cr
OUT
VIDEO-Pb/Cb
OUT
VIDEO-Y
OUT
DIGITAL
AUDIO OUT
(COAXIAL)
S-VIDEO
OUT
CHG+3.3V
2
19
REMOTE1
1
20
CN401
CN1001
CHG+5V
20
1
EV+1.2V
19
2
EV+1.2V
18
3
EV+3.3V
17
4
EV+3.3V
16
5
P-ON+3.3V
15
6
P-ON+3.3V
14
7
P-ON+3.3V
13
8
P-ON+5V
12
9
EV+10V
11
10
EV+10V
10
11
GND
9
12
GND
8
13
GND
7
14
GND
6
15
GND
5
16
GND
4
17
GND
3
18
ROTARY
MOTOR
UP/DOWN
SWITCH
CN5002
CN5101
4
GND
3
P-ON+3.3V
2
RT-SENS-A
1
D-SENS-A
FUNCTION CBA
CN2101
CN2201
CN2103
CN2203
POWER SWITCH CBA
POWER-LED
1
1
STANBY-LED
2
2
HDMI-LED
3
3
KEY-0
4
4
KEY-1
5
5
GND
6
6
CN3003
2
1
LM(+)
LM(-)
SWITCH CBA
CN3004
CN3101
ST-CLOSE
1
1
GND
2
2
ST-OPEN
3
3
M
CN5005
1 D-SENS-A
2 RT-SENS-A
3 P-ON+3.3V
4 GND
5 GND
6 CHK-ON
7 CHK-OFF
8 RM1
9 RM2
DIGITAL
AUDIO OUT
(OPTICAL)
PICK UP UNIT
11
20
13
15
16
18
17
19
9
10
7
8
5
6
4
GND
12 NU
14 NU
VREF
P-ON+5V
C
B
D
A
PD-MONI
DVD-LD
1 TS(+)
1 SP(+)
2 SP(-)
3 GND
4 SL(-)
5 SL(+)
6 TRAY-IN
2 FS(+)
3 FS(-)
GND(LD)
GND(CD-PD)
TS(-)
GND(DVD-PD)
CD-LD
CD/DVD
FS
TS
DETECTOR
9
11
2
3
6
5
4
CN5003
TRAY-IN
MECHA CBA
SLED
MOTOR
SPINDLE
MOTOR
CN5001
CN3001
D-SENS-A
8
8
RT-SENS-A
6
6
P-ON+3.3V
4
4
GND
2
2
CHK-ON
1
1
CHK-OFF
3
3
RM1
5
5
RM2
7
7
SP(-)
9
9
TRAY-IN
11
11
SL(-)
13
13
GND
10
10
SP(+)
12
12
SL(+)
14
14
SP(+)
15
15
CN3301
CN301
PWCHK
8
8
TRAY-IN
10
10
SL(-)
12
12
SP(-)
14
14
GND
13
13
SL(+)
11
11
GND
9
9
FP-DOUT
7
7
FP-DIN
6
6
RS232C-TX(NU) 1
1
GND
3
3
FP-STB
5
5
FP-CLK
4
4
RS232C-RX(NU) 2
2
CN3102
CN1102
CHG+3.3V
8
8
P-ON+5V
6
6
EV+10V
4
4
F2
2
2
F1
1
1
-FL
3
3
CHG+5V
5
5
P-ON+3.3V
7
7
PWSW
9
9
PWCHK
11
11
GND
13
13
POWCON
10
10
GND
12
12
REMOTE2
14
14
AV CBA
CHANGER CBA
M
M
REMOTE
CONTROL-IN
REMOTE
CONTROL-OUT
VIDEO-Pr/Cr
3
16
GND
4
15
GND
6
13
VIDEO-Y(I/P)
7
12
GND
8
11
VIDEO-C
9
10
AUDIO-GND
10
9
AUDIO(L)
11
8
AUDIO(L)-MUTE 12
7
AUDIO(R)
13
6
AUDIO-GND
14
5
SPDIF
15
4
AUDIO+5V
17
2
AUDIO+5V
16
3
AUDIO(R)-MUTE 18
1
VIDEO-Pb/Cb
5
14
CN601
CN1601
GND
2
17
VIDEO-Y(I)
1
18
SLIDE TRAY
ASSEMBLY
GND
1
1
LP5
2
2
LP4
3
3
LP3
4
4
LP2
5
5
LP1
6
6
LD5
7
7
LD4
8
8
LD3
9
9
LD2
10
10
LD1
11
11
KEY-1
12
12
KEY-2
13
13
KEY-3
14
14
GND
15
15
HDMI-
CONNECTOR
7
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46
DVM-1845/745
FIRMWARE RENEWAL MODE
1.
Turn the power on and remove the disc on the tray.
2.
To put the DVD player into version up mode, press
[9], [8], [7], [6], and [SEARCH MODE] buttons on
the remote control unit in that order. The tray will
open automatically.
Fig. a appears on the screen and Fig. b appears
on the VFD.
The DVD player can also enter the version up
mode with the tray open. In this case, Fig. a will be
shown on the screen while the tray is open.
3.
Load the disc for version up.
4.
The DVD player enters the F/W version up mode
automatically. Fig. c appears on the screen and
Fig. d appears on the VFD. If you enter the F/W for
different models, “Disc Error” will appear on the
screen, then the tray will open automatically.
The appearance shown in (*1) of Fig. c is
described as follows:
5.
After programming is finished, the tray opens
automatically. Fig. e appears on the screen and
the checksum in (*2) of Fig. e appears on the VFD
(Fig. f).
At this time, no button is available.
6.
Remove the disc on the tray.
7.
Unplug the AC cord from the AC outlet. Then plug
it again.
8.
Turn the power on by pressing the [ON/STANDBY]
button and the tray will close.
9.
Press [1], [2], [3], [4], and [DISPLAY] buttons on
the remote control unit in that order.
Fig. g appears on the screen.
F/W Version Up Mode
Model No : *******
VERSION : *.**
Please insert a DISC
for F/W Version Up.
EXIT: POWER
"*******" differs depending on the models.
Fig. a Version Up Mode Screen
Fig. b VFD in Version Up Mode
VERSION : ************.***
Reading...
F/W Version Up Mode
Model No : *******
VERSION : *.**
Fig. c Programming Mode Screen
"*******" differs depending on the models.
(*1)
Fig. d VFD in Programming Mode (Example)
No.
Appearance
State
1
Reading...
Sending files into the memory
2
Erasing...
Erasing previous version data
3
Programming... Writing new version data
VERSION : ************.***
Completed
SUM : 7ABC
F/W Version Up Mode
Model No : *******
VERSION : *.**
"*******" differs depending on the models.
Fig. e Completed Program Mode Screen
(*2)
Fig. f VFD upon Finishing the Programming Mode (Example)
MODEL : *******
Version : *.**
Region : *
EXIT: POWER
EEPROM CLEAR : CLEAR
Fig. g
"*******" differs depending on the models.
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47
DVM-1845/745
10. Press [CLEAR] button on the remote control unit.
Fig. h appears on the screen.
When “OK” appears on the screen, the factory
default will be set. Then the firmware renewal
mode is complete.
11. To exit this mode, press [ON/STANDBY] button.
MODEL : *******
Version : *.**
Region : *
EEPROM CLEAR : OK
EXIT: POWER
EEPROM CLEAR : CLEAR
"*******" differs depending on the models.
Fig. h
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48
DVM-1845/745
TRAY LOCK MODE
Tray Lock Mode is defeated a tray-open/close to
prevent a case of disc theft in demo mode.
Enter this mode as the following procedure.
1. Confirm that the TV Monitor is connected.
2. With playback stopped, press [SETUP], [TOP
MENU], [3], [AUDIO], [0] and [SETUP] buttons on
the remote control unit in that order. "TRAY LOCK
ON" will appear at upper right on the screen.
3. To exit this mode, press [SETUP], [TOP MENU],
[3], [AUDIO], [0] and [SETUP] buttons on the
remote control unit in that order. "TRAY LOCK
OFF" will appear at upper right on the screen.
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DVM-1845/745
1: Vin
2: Vo
3: GND
1 2 3
1: R
2: A
3: K
1 2 3
E C B
E C
B
EL817(B,C)
LTV-817C-F
PS2561A-1(W)
1
2
4
3
1: Anode
2: Cathode
3: Emitter
4: Collector
KIA2431AP-AT/P
2SC1815-GR(TE2 F T)
2SA966-Y(TE6 F M)
2SA1015-Y(TE2 F T)
KTA1266-Y-AT/P
KTC3203(Y)
KTC3205-Y-AT/P
KTA1273-Y-AT/P
KRA110M-AT/P
KRC110M-AT/P
KTA1267-Y-AT/P
KTC3199-GR-AT/P
1 4
8 5
KIA4558P/P
RC4580IP
UTC4558
CXA1511M-T4
MM1636XWRE
0C-0805T*002
1 2 3
Note:
A: Anode
K: Cathode
E: Emitter
C: Collector
B: Base
R: Reference
1 VCC
2 GND
3 OUT
PT204-6B-12
E
C
1
9
BA6956AN
PT6315(L)
1 2 3
5
4
PST3229NR
2SK3498
LD1117V
UZ1086L-ADJ
1
11
12
22
23
33
34
44
1
8
16
9
ADM232AARN
SP232ACN/TR
MM1637XVBE
1
21
42
22
M38503G4A-131FP
G D S
LEAD IDENTIFICATIONS
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DVM-1845/745
EXPLODED VIEWS
Cabinet 1
2B1
2L021
A16
2L021
2L021
2L021
2L021
2L021
Relay CBA
AV CBA
Changer CBA
Power Switch
CBA
Function CBA
Switch CBA
A2
2B6
2B1
2B2
2B6
2B3
2L032
2L032
W3002
A1X
A15
2L011
2L031
2L031
2L041
2L011
2L051
2L051
1L016
1B12
1B4
1B11
D-3
2L011
2L103
2L011
A
A'
B'
B
C
D'
C'
F
E
F'
E'
1B32
1B31
2L032
JK3501
JK1404
1L023
1B33
1L017
2L033
2L033
2L043
2L033
2L033
2L012
2L012
2L012
A21
2L012
2L011
2L041
W3004
2B11
AC1001
JK1202
JK1201
JK1401
IC1204
A17
W3003
SCOTCH TAPE
SCOTCH TAPE
2B7
A3
A3
DVD Main
CBA Unit
2B25
1B1
2B1
D
2L051
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DVM-1845/745
Cabinet 2
B1-22
B1-24
B1-41
B1-26
B1-43
B1-42
L1-6
B1-24
B1-3
B1-2
B1-6
B1-36
B1-7
B1-9
B1-52
B1-37
B1-8
L1-26
L1-25
L1-6
L1-11
L1-15
L1-11
L1-23
L1-7
B1-12
B1-13
B1-14
B1-15
B1-16
B1-20
B1-19
B1-21
SW5001
L1-5
B1-5
B1-4
B1-38
Relay CBA +
Sensor CBA
Relay CBA
Sensor CBA
Mecha Holder Assembly
Rotary Motor Assembly
B1-30
B1-30
L1-11
L1-11
W5001
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DVM-1845/745
PARTS LIST OF EXPLODED VIEW (CABINET1)
＊本表に記載されている部品は、補修用部品のため製品に使用している部品とは一部、形状、寸法などが異なる場合があります。
＊ The parts listed below are for maintenance only, might differ from the parts used in the unit in appearances or dimensions.
＊ "nsp" 印の部品は常時在庫していませんので供給に長時間を要することがあります。場合によっては、供給をお断りする場合があります。
＊ Part indicated with the mark “nsp” are not always in stock and possibly to take a long period of time for supplying, or in some case supplying of part may be refused.
Ref. No.
nsp
Part No.
Part Name
Remark
Q'ty
New
00D 9H2 6000 879
DVD MAIN CBA UNIT
N7CDFKUP
1
*
00D 9H2 6000 880
CHG CBA
1VSA15498
1
*
CHANGER CBA
-
AV CBA
-
FUNCTION CBA
-
POWER SWITCH CBA
-
SWITCH CBA
-
A1X
00D 9H2 6000 860
FRONT ASSEMBLY
for DVM1845
1VM222960B
1
*
A1X
00D 9H2 6000 861
FRONT ASSEMBLY
for DVM745
1VM222979
1
*
A2
00D 9H2 6000 862
TRAY PANEL ASSEMBLY
1VM425417
1
*
A3
00D 9H2 6000 323
FOOT
0VM406940A
2
A15
00D 9H2 6000 801
CHASSIS
0VM101293H
1
A16
00D 9H2 6000 734
TOP COVER
0VM203048C
1
A17
00D 9H2 6000 873
REAR PANEL
for DVM1845
1VM222914
1
*
A17
00D 9H2 6000 874
REAR PANEL
for DVM745
1VM222958
1
*
A21
-
LABEL SERIAL NO.
-
1
1B1
00D 9H2 6000 803
SLIDE TRAY ASSEMBLY
N79F0KVC
1
*
MECHANICAL PARTS (B1-2~W5001)
ROTARY MOTOR ASSEMBLY
MECHA HOLDER ASSEMBLY
RELAY CBA + SENSOR CBA
1B4
00D 9H2 6000 328
LOADING PULLEY
0VM304636
1
1B11
00D 9H2 6000 329
MOTOR PULLEY
21P7048
1
1B12
00D 9H2 6000 330
BELT L
0RM400160
1
1B31
00D 9H2 6000 331
SLIDE TRAY GEAR(B)
0VM304632
1
1B32
00D 9H2 6000 332
SLIDE TRAY GEAR(A)
0VM304631
1
1B33
00D 9H2 6000 333
TRAY GUIDE SPRING
0VM412360
1
2B1
00D 9H2 6000 804
TRAY GUIDE(L)
0VM000136N
1
2B2
00D 9H2 6000 805
TRAY GUIDE(R)
0VM000137R
1
2B3
00D 9H2 6000 336
BRACKET(TOP)
0VM203160
1
2B6
00D 9H2 6000 337
STOPPER BRACKET
0VM411941
2
2B7
00D 9H2 6000 806
HOLDER F.I.P. 2
0VM407372D
1
2B11
00D 9H2 6000 416
MAIN PCB HOLDER
1VM323464
1
2B25
-
RUBBER SHEET
0VM415921
3
D-3
00D 9H2 6000 715
DC MINI MOTORS M31E-1(R-14 7448)
0VM412937A
7
W3002
00D 9H2 6000 429
MOTOR CABLE MOTOR CABLE
GBHC3050
4
W3003
00D 9H2 6000 808
WIRE ASSEMBLY MAIN TO RELAY
FFC20P 250MM 20PIN
GBHC3050
6
W3004
00D 9H2 6000 809
WIRE ASSEMBLY CONT TO RELAY
FFC14P 320MM 14PIN
GBJP3080
2
SCREWS
1L016
00D 9H2 6000 351
SCREW TAP TIGHT WASHER+ P-TIGHT
GBJP3080
4
1L017
00D 9H2 6000 352
SCREW P-TIGHT 3X12 WASHER HEAD+
GBHB3080
14
1L023
00D 9H2 6000 353
SCREW SEMS M2.6X4 PAN HEAD+
GBJP3060
3
2L011
-
SCREW C-TIGHT M3X6
GBHC3050
1
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DVM-1845/745
2L012
-
SCREW TAP TIGHT M3X5 BIND
HEAD+BLK NI
0VM413320A
2
2L021
-
SCREW TAP TIGHT M3X5 BIND
HEAD+BLK NI
GBJP3080
1
2L031
-
SCREW P-TIGHT M3X8 BIND HEAD+
MMDZB4EMM003
1
2L032
-
SCREW P-TIGHT M3X8 BIND HEAD+
WX1E8620-902
1
2L033
-
SCREW B-TIGHT M3X8 BIND HEAD+
WX1E8700-003
1
2L041
-
SCREW P-TIGHT M3X6 BIND HEAD+
WX1E8700-009
1
2L043
-
SCREW TAP TIGHT M3X5 BIND
HEAD+BLK NI
GCJP3080
1
2L051
-
SCREW S-TIGHT 3X8
GCJP3120
1
2L103
-
SCREW P-TIGHT M3X8 BIND HEAD+
CPJ39040
1
Ref. No.
nsp
Part No.
Part Name
Remark
Q'ty
New
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DVM-1845/745
PARTS LIST OF EXPLODED VIEW OF SLIDE MECHANISM UNIT (CABINET2)
＊本表に記載されている部品は、補修用部品のため製品に使用している部品とは一部、形状、寸法などが異なる場合があります。
＊ The parts listed below are for maintenance only, might differ from the parts used in the unit in appearances or dimensions.
＊ "nsp" 印の部品は常時在庫していませんので供給に長時間を要することがあります。場合によっては、供給をお断りする場合があります。
＊ Part indicated with the mark “nsp” are not always in stock and possibly to take a long period of time for supplying, or in some case supplying of part may be refused.
Ref. No.
nsp
Part No.
Part Name
Remark
Q'ty
New
00D9H26000855
ROTARY MOTOR ASSEMBLY
1VSA15769
1
00D9H26000852
MECHA HOLDER ASSEMBLY
1VSA15023
1
00D9H26000853
RELAY CBA + SENSOR CBA (Electrical
Parts)
1VSA15375
1
RELAY CBA
-
SENSOR CBA
-
B1-2
00D9H26000816
SLIDE TRAY N79F0KVC
0VM000164M
1
B1-3
00D9H26000817
ROTARY TRAY N79F0FVC
0VM000165J
1
B1-4
00D9H26000328
LOADING PULLEY
0VM304636
1
B1-5
00D9H26000818
MOTION GEAR
0VM203026
1
B1-6
00D9H26000819
IDLER ARM
0VM304637
1
B1-7
00D9H26000820
IDLER GEAR
0VM304638
1
B1-8
00D9H26000821
WASHER
0RM401740
1
B1-9
00D9H26000822
ROTARY TRAY GEAR
0VM304635
1
B1-12
00D9H26000330
BELT L
0RM400160
1
B1-13
00D9H26000823
GEAR PLATE
0VM304639
1
B1-14
00D9H26000824
PLATE SPRING(B)
0VM412343B
1
B1-15
00D9H26000825
PLATE HOLDER 2
0VM305255
1
B1-16
00D9H26000826
PLATE HOLDER 3
0VM305243
1
B1-19
00D9H26000827
STOP LEVER
0VM304633
1
B1-20
00D9H26000828
ROTARY STOPPER
0VM304634B
1
B1-21
00D9H26000829
STOPPER SPRING
0VM411642A
1
B1-22
00D9H26000830
ROTARY TRAY SPRING
0VM411643B
1
B1-24
00D9H26000831
ROTARY TRAY WASHER B
0VM411646
1
B1-26
00D9H26000832
CHUCK ARM
0VM203407K
1
B1-30
00D9H26000833
SLIDER
0VM412308A
6
B1-36
00D9H26000835
IDLER PAD
0VM411644A
1
B1-37
00D9H26000836
SPRING
0RM401741
1
B1-38
00D9H26000837
WASHER
0RM401755
1
B1-41
00D9H26000838
CLAMPER
0VM202842
1
B1-42
00D9H26000839
MAGNET
0VM409759
1
B1-43
00D9H26000840
YOKE
0VM411036
1
B1-52
00D9H26000841
LEAD CLAMPER GT-80M
XF00080HL001
1
SW5001
00D9H26000850
DETECTOR SWITCH SSCF210300
SSC0102AL001
1
W5001
00D9H26000851
MECHA CABLE MECHA CABLE
WX1E7960-919
1
SCREWS
L1-5
00D9H26000842
SCREW P-TIGHT M2.6X8 BIND HEAD+
GBJP9080
1
L1-6
00D9H26000843
SCREW P-TIGHT 3X18 WASHER HEAD+
GCJP3180
2
L1-7
00D9H26000844
SCREW B-TIGHT M2.6X4 BIND+
GBJB9040
1
L1-11
00D9H26000845
SCREW P-TIGHT M3X8 BIND HEAD+
GBJP3080
10
L1-15
00D9H26000846
SCREW P-TIGHT 3X12 WASHER HEAD+
GCJP3120
2
L1-23
00D9H26000847
SCREW SEMS M2.6X4 PAN HEAD+
CPJ39040
1
L1-25
00D9H26000848
SCREW B-TIGHT WASHER HEAD M2X12
WASHER HEAD+
GCJB2120
1
L1-26
00D9H26000849
WASHER 14X3.2XT1
WPJ3141
1
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DVM-1845/745
Chief Ingredient of FAG-102R
- Hydrocarbon synthetic oil
- Lithium soap
- Additives
NOTE : Apply some grease to the Fill Color position.
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DVM-1845/745
Chief Ingredient of FAG-102R
- Hydrocarbon synthetic oil
- Lithium soap
- Additives
NOTE : Apply some grease to the Fill Color position.
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DVM-1845/745
Packing
X10
X22
X21
X5
X2
X4
S2
S2
S3
S3
S1
A30
A30
A22
S10
X1
S4
Unit
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DVM-1845/745
PARTS LIST OF PACKING & ACCESSORIES
＊本表に記載されている部品は、補修用部品のため製品に使用している部品とは一部、形状、寸法などが異なる場合があります。
＊ The parts listed below are for maintenance only, might differ from the parts used in the unit in appearances or dimensions.
＊ "nsp" 印の部品は常時在庫していませんので供給に長時間を要することがあります。場合によっては、供給をお断りする場合があります。
＊ Part indicated with the mark “nsp” are not always in stock and possibly to take a long period of time for supplying, or in some case supplying of part may be refused.
Ref. No.
nsp
Part No.
Part Name
Remark
Q'ty
New
A22
-
BARCODE LABEL
-
1
A30
-
CONTROL LABEL
-
2
S1
00D 9H2 6000 875
GIFT BOX CARTON
for DVM1845
1VM323794
1
*
S1
00D 9H2 6000 876
GIFT BOX CARTON
for DVM745
1VM323803
1
*
S2
00D 9H2 6000 317
FRONT PAD
0VM101008A
2
S3
00D 9H2 6000 736
REAR PAD
0VM101007A
2
S4
00D 9H2 6000 688
SET BAG
0DM400731D
1
S10
00D 9H2 6000 811
TRAY PAD
1VM425290
1
X1
00D 9H2 6000 718
REMOTE CONTROL UNIT
NA841UD
1
X2
-
DRY BATTERY R6UW/2S
XB0M311MS001
2
X2
-
DRY BATTERY ES-GR6M-C
XB0M571GLP01
2
X2
-
DRY BATTERY R6P/2S
XB0M451T0001
2
X4
00D 9H2 6000 513
ACCESSORY BAG
0VM416059
1
X5
00D 9H2 6000 226
AV CORD WPZ0102TM015
WPZ0102TM015
1
X5
00D 9H2 6000 243
AV CORD RCA(M*2)TO RCA(M*2)
WPZ0102LTE01
1
X10
00D 9H2 6000 877
OWNERS MANUAL
for DVM1845
1VMN23562
1
*
X10
00D 9H2 6000 878
OWNERS MANUAL E8735UD
for DVM745
1VMN23651
1
*
X21
-
WARRANTY SHEET
1VM323507
1
X22
-
SERVICE CENTER SHEET
1VM425536
1
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5
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
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