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。
X0344V.01 DE/CDM 0706
SERVICE MANUAL
DVD AUDIO-VIDEO / SUPER AUDIO CD PLAYER
MODEL
JP
E3
E2
EK
E2A
E1C
E1K
EUT
DVD-1940CI
�
DVD-758
�
Ver. 1
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DVD-1940CI/758
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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T E L
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DVD-1940CI/758
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 kΩ load (Audio Output)
4.
Room Ambient: +25 °C
Item
Conditions
Unit
Nominal
Limit
1. Video Output
75 Ω load
Vpp
1.0
± 0.1
2. Coaxial Digital Out
75 Ω load
mVpp
500
± 50
3. Audio (PCM)
3-1. Output Level
1 kHz, 0 dB
Vrms
2.0
3-2. S/N
dB
115
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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DVD-1940CI/758
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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DVD-1940CI/758
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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DVD-1940CI/758
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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DVD-1940CI/758
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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DVD-1940CI/758
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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DVD-1940CI/758
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
Note:
(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.”
About tightening screws
When tightening screws, tighten them with the
following torque.
ID/
Loc.
No.
Part
Removal
Fig.
No.
Remove/*Unhook/
Unlock/Release/
Unplug/Desolder
Note
[1]
Top Cover
D1 5(S-1)
---
[2]
Front Unit
D2 *4(L-1), *2(L-2),
*3(L-3), *CN2001
1
[3]
Tray Panel
D2 *2(L-4)
1
[4]
Function
CBA
D3 5(S-2)
---
[5]
Front
Assembly
D3 ----------
---
[6]
Reinforce
Plate
D4 2(S-3)
---
[7]
Rear Panel
D4 9(S-4), (S-5), (S-6),
2(S-7)
4
[8]
DVD Main
CBA Unit
D5
3(S-8), *CN201,
*CN301, *CN401,
*CN601, *CNS01,
*CNF02
2
4
[9]
Interface
CBA
D6 (S-9)
---
[1] Top Cover
[5] Front Assembly
[2] Front Unit
[3] Tray Panel
[6] Reinforce Plate
[7] Rear Panel
[16] Loader Base
[18] Main PCB Holder
[8] DVD Main CBA Unit
[13] DVD Mechanism
[17] Power PCB Holder
[14] LED CBA
[4] Function CBA
[11] 5.1ch Amp CBA
[12] Jack PCB Holder
[9] Interface CBA
[10] D Sub Holder
[15] AV CBA
[10] D Sub
Holder
D6 (S-10)
---
[11] 5.1ch Amp
CBA
D6 (S-11), 2(L-5),
*CN7101
---
[12] Jack PCB
Holder
D6 2(S-12)
---
[13] DVD
Mechanism
D5
D7 4(S-13)
2
3
[14] LED CBA
D8 *CN2102
---
[15] AV CBA
D8 4(S-14), (S-15)
---
[16] Loader
Base
D9 4(S-16)
---
[17] Power PCB
Holder
D9 2(S-17)
---
[18] Main PCB
Holder
D9 (S-18)
---
↓
(1)
↓
(2)
↓
(3)
↓
(4)
↓
(5)
Screws
Torque
(S-1), (S-2), (S-3), (S-4),
(S-5), (S-6), (S-7), (S-8),
(S-9), (S-10), (S-11),
(S-12), (S-13), (S-14),
(S-15), (S-16), (S-17),
(S-18)
0.45 ± 0.05 N·m
ID/
Loc.
No.
Part
Removal
Fig.
No.
Remove/*Unhook/
Unlock/Release/
Unplug/Desolder
Note
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DVD-1940CI/758
Reference Notes
1.
CAUTION 1: Locking Tabs (L-1), (L-2), (L-3) and
(L-4) are fragile. Be careful not to break them.
1) Release four Locking Tabs (L-1), then release
two Locking Tabs (L-2).
2) Release three Locking Tabs (L-3).
3) Disconnect connector CN2001, then remove
the Front Unit.
2.
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.
1) Short the three short lands of FPC cable with
solder before removing the FFC cable (CN201)
from it. If you disconnect the FFC cable
(CN201), the laser diode of pickup will be
destroyed. (Fig. D5)
2) Disconnect Connectors (CN301), (CN401) and
(CN601). Remove three screws (S-8) and lift
the DVD Main CBA Unit. (Fig. D5)
3.
CAUTION 3: When reassembling, confirm the
FFC cable (CN201) is connected completely. Then
remove the solder from the three short lands of
FPC cable. (Fig. D5)
4.
CAUTION 4: When installing the DVD Main CBA
Unit with a screw, hold and press the DVD Main
CBA Unit to align the HDMI connector with the
connector’s hole for HDMI on the Rear Panel.
Fig. D1
[1] Top Cover
(S-1)
(S-1)
(S-1)
[2] Front Unit
[3] Tray Panel
CN2001
(L-1)
(L-1)
(L-2)
(L-2)
(L-4)
(L-4)
(L-3)
Fig. D2
[4] Function CBA
[5] Front Assembly
(S-2)
(S-2)
Fig. D3
Note: Please do not do a screw stopper here.
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DVD-1940CI/758
[7] Rear Panel
(S-6)
(S-4)
(S-4)
(S-5)
(S-4)
Fig. D4
(S-7)
[6] Reinforce
Plate
(S-3)
(S-3)
(S-8)
(S-8)
[8] DVD Main CBA Unit
CN401
CN301
A
Fig. D5
CNF02
CN201
CN601
(S-8)
CNS01
Short the three short lands by soldering.
(Either of two places.)
View for A
FPC Cable
(S-11)
(S-12)
[12] Jack
PCB Holder
[11] 5.1ch Amp CBA
(L-5)
Fig. D6
[9] Interface
CBA
[10] D Sub
Holder
(S-9)
(S-10)
CN7101
Fig. D7
[13] DVD
Mechanism
(S-13)
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DVD-1940CI/758
3. How to Eject Manually
1.
Remove the Top Cover.
2.
Rotate the roulette in the direction of the arrow as shown below.
[15] AV CBA
[14] LED CBA
(S-14)
(S-14)
(S-15)
CN2102
Fig. D8
(S-14)
[16] Loader Base
[18] Main
PCB
Holder
(S-16)
Fig. D9
(S-16)
(S-18)
[17] Power
PCB Holder
(S-17)
A
View for A
Rotate this roulette in
the direction of the arrow
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DVD-1940CI/758
HOW TO INITIALIZE THE DVD PLAYER
To put the program back at the factory-default,
initialize the DVD player using the following procedure.
1.
Press [1], [2], [3], [4], and [DISPLAY] buttons on
the remote control unit in that order.
Fig. a appears on the screen.
2.
Press [CLEAR] button on the remote control unit.
Fig. b appears on the screen.
When “OK” appears on the screen, the factory
default will be set.
3.
To exit this mode, press [POWER OFF] button.
LD OPERATING TIME:
It indicates the DVD/CD operating time in Fig. a.
It is accumulated in the flash memory every time the
power is turned off.
To reset the LD OPERATING TIME, overwrite the
FIRMWARE.
Fig. a
"*******" differ depending on the models.
MODEL : *******
Version
: *.**
Region : *
LD OPERATING TIME
TIME(DVD) : *:**
TIME(CD) : *:**
EXIT: POWER
EEPROM CLEAR : CLEAR
"*******" differ depending on the models.
Fig. b
EEPROM CLEAR : OK
EXIT: POWER
EEPROM CLEAR : CLEAR
LD OPERATING TIME
TIME(DVD) : *:**
TIME(CD) : *:**
MODEL : *******
Version
: *.**
Region : *
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DVD-1940CI/758
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 [POWER ON]
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)
Fig. g
"*******" differ depending on the models.
MODEL : *******
Version
: *.**
Region : *
LD OPERATING TIME
TIME(DVD) : *:**
TIME(CD) : *:**
EXIT: POWER
EEPROM CLEAR : CLEAR
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DVD-1940CI/758
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 [POWER OFF] button.
"*******" differ depending on the models.
Fig. h
EEPROM CLEAR : OK
EXIT: POWER
EEPROM CLEAR : CLEAR
LD OPERATING TIME
TIME(DVD) : *:**
TIME(CD) : *:**
MODEL : *******
Version
: *.**
Region : *
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DVD-1940CI/758
TRAY LOCK MODE
Tray Lock Mode prevents the tray opening or closing to
prevent disc theft in demo mode.
Enter this mode using 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 in the upper right corner 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 in the upper right corner on the
screen.
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DVD-1940CI/758
REMOTE LOCK MODE
SETTING MENU:
Remote Lock Off Mode:
This mode receives an input signal from the remote
control unit or from the Remote In-Jack on the rear
panel.
Remote Lock On Mode:
This mode dose not receive an input signal from
the remote control unit or from the Remote In-Jack
on the rear panel.
Perform the setting using the following procedure.
1. Press [ON/STANDBY] and [STOP] buttons on the
front panel simultaneously for over 3 seconds to
engage "Remote Lock Mode".
2. Press [STILL/PAUSE] button on the remote control
unit to set to "On" or "Off". When "Remote Lock
On", Fig. a appears on the VFD. "REMOTE LOCK
ON" will appear in the upper right corner on the
screen.
When "Remote Lock Off", Fig. b appears on the
VFD. "REMOTE LOCK OFF" will appear in the
upper right corner on the screen.
a. If [STILL/PAUSE] button is not pressed for 5
seconds or any other button is pressed within 5
seconds, the unit will be released from
"Remote Lock Mode".
b. When initializing, set the Remote Lock Mode
"off".
Fig. a VFD in Remote Lock On Mode
Fig. b VFD in Remote Lock Off Mode
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DVD-1940CI/758
TROUBLESHOOTING
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 power 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, D1010, D1016, D1030, IC1002, Q1002, Q1004, Q1005,
Q1011, Q1014, Q1020, Q1022)
Does the photo coupler circuit on the secondary
side operate normally?
Check IC1001, D1014 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 approximately -20V 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 MICON +3.3V line voltage normal?
See FLOW CHART No.2
Check if there is any leak or short-circuiting on the
primary circuit component, and service it if defective.
(Q1001, T1001, D1001, D1002, D1004, D1005,
D1011, C1003)
Check each rectifying circuit of the secondary circuit
and service it if defective.
Yes
Yes
Yes
No
No
No
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DVD-1940CI/758
FLOW CHART NO.7
P-ON+5V is not outputted. (EV+10V is outputted normally.)
Is the "H" signal inputted into the base of Q1004?
Replace Q1004.
Replace Q1014.
Check R1068 and D1046 and service it if defective.
Yes
No
Is the "H" signal inputted into the base of Q1014?
Check D1047, R1069, R1098 and the periphery
circuit, and service it if defective.
Check D1010, C1010, C1011, L1006 and the
periphery circuit, and service it if defective.
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 or R1067.
Check D1008, C1007, C1038, L1007 and the
periphery circuit, and service it if defective.
Yes
No
FLOW CHART NO.9
EV+5V is not outputted.
Is 6V voltage supplied to the collector of Q1014?
Yes
Yes
No
Check D1006, D1074, C1014 and the periphery
circuit, and service it if defective.
Is 2.5V voltage supplied to the emitter of Q1022?
Yes
No
FLOW CHART NO.10
EV+1.2V is not outputted.
Is 2.5V voltage supplied to Pin(3) of IC1002?
Replace IC1002.
Check Q1012, Q1022 and PW-SW line, and
the periphery circuit, and service it if defective.
Yes
No
FLOW CHART NO.6
P-ON+10V (EV+10V) is not outputted.
Is 11V 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, D1048, C1035, C1048, L1009 and
the periphery circuit, and service it if defective.
Check Q1016 and PWRCON line and service it if
defective.
Yes
Yes
No
No
FLOW CHART NO.11
EV+3.3V (MICON+3.3V) is not outputted.
Is 3.3V voltage supplied to the collector of Q1020?
Is the voltage of base on Q1020 lower than the
voltage of emitter on Q1020 when turning the power on?
Replace Q1020.
Check D1008, C1007, C1038, L1007 and
the periphery circuit, and service it if defective.
Check Q1012 and PW-SW line, and service it if
defective.
Yes
Yes
No
No
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DVD-1940CI/758
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, SW2103-2108, SW2181-2183) normal?
When pressing each switches (SW2101, SW2103-2108,
SW2181-2183), do the voltage of each pin of IC2101
(shown below) increase?
SW2101, 2104, 2105, 2106, 2108: IC2101 31PIN
SW2103, 2107, 2181, 2182, 2183: IC2101 32PIN
Check the switches (SW2101, SW2103-2108,
SW2181-2183) and their periphery, and service it
if detective.
No
Re-install the switches (SW2101, SW2103-2108,
SW2181-2183) correctly or replace the poor switch.
Replace IC2101.
Yes
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 remote control unit.
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(25) of CN1001?
Replace DVD Main CBA Unit.
Is 5V voltage supplied to Pin(3) terminal of
the infrared remote control receiver (RM2001)?
Yes
No
Check EV+5V line and service it if defective.
No
No
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
FLOW CHART NO.12
The fluorescent display tube does not light up.
Is 3.3V voltage supplied to Pins(6,24) of IC2001?
Is the voltage of approximately -20V supplied to
Pin(15) of IC2001?
Is there 500kHz oscillation at Pin(26) of IC2001?
Are the filament voltage supplied between
Pins(1, 2) and Pins(29, 30) of the fluorescent
display tube? And the negative voltage applied
between these pins and GND?
Replace the fluorescent display tube.
Check the EV+3.3V line and service it if defective.
Check the -FL (-20V) line and service it if defective.
Check R2002, IC2001 and their periphery, and
service it if defective.
Check PWRCON
line, and service
it if defective.
Is the "H" signal inputted
to base of Q1016?
Check D1016, D1017, T1001, and their periphery,
and service it if defective.
Is -14V voltage supplied to collector of Q1005?
No
Yes
Yes
No
Check Q1005, Q1015, Q1016, D1055 and
their periphery, and service it if defective.
Replace IC2101.
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DVD-1940CI/758
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.
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(31) of
IC2101? Refer to "FLOW CHART NO.13"
Refer to "FLOW CHART NO.16"
Replace the "OPEN/CLOSE" switch (SW2108).
No
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DVD-1940CI/758
Is 5V voltage applied to the Pin(4, 12) of IC1402
and 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 or 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 or IC1403 on the AV CBA,
and service it if detective.
CN1601 2PIN → IC1403 3PIN S-Y(I)
CN1601 10PIN → IC1403 1PIN S-C
CN1601 8PIN → IC1402 3PIN S-Y(I/P)
CN1601 6PIN → IC1402 6PIN Pb/Cb
CN1601 4PIN → IC1402 8PIN Pr/Cr
Are the video signals shown above inputted into
each pin of IC1402 or IC1403?
Yes
No
No
CN1601 2PIN S-Y(I)
CN1601 4PIN Pr/Cr
CN1601 6PIN Pb/Cb
CN1601 8PIN S-Y(I/P)
CN1601 10PIN S-C
IC1403 3PIN S-Y(I)
IC1403 1PIN S-C
IC1402 3PIN S-Y(I/P)
IC1402 6PIN Pb/Cb
IC1402 8PIN Pr/Cr
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.
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DVD-1940CI/758
FLOW CHART NO.22
Audio is not outputted normally.
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 12PIN AUDIO(L)
CN1601 14PIN AUDIO(R)
CN1601 19PIN AUDIO(R)-MUTE
CN1601 13PIN 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 JK1404, and service it if detective.
Check each line between each pin of CN1601
and each pin of IC1201 on AV CBA, and service it
if detective.
CN1601 12PIN → IC1201 2PIN AUDIO(L)
CN1601 14PIN → 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 (JK1404)?
Yes
Yes
Yes
Yes
No
No
No
No
No
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24
DVD-1940CI/758
FLOW CHART NO.23
Audio is not outputted. (JK7101)
Set the disc (with 5.1ch Audio) on the disc tray, and playback.
Are the analog audio signals outputted to each pin
of CN7102 on 5.1ch Amp CBA.
CN7102 15PIN FRONT(L)
CN7102 13PIN FRONT(R)
CN7102 11PIN SURROUND(L)
CN7102 9PIN SURROUND(R)
CN7102 7PIN CENTER
CN7102 5PIN SUB WOOFER
IC7301 2, 6PIN FRONT(L/R)
IC7401 2, 6PIN SURROUND(L/R)
IC7501 2, 6PIN CENTER/SUB WOOFER
Replace the DVD Main CBA or DVD Mechanism.
Replace ICs (IC7301, IC7401 or IC7501).
Check each line between each pin of CN7102
and each pin of IC7301,IC7401 and IC7501
and service it if defective.
CN7102 15,13PIN → IC7301 2,6PIN FRONT(L/R)
CN7102 11,9PIN → IC7401 2,6PIN SURROUND(L/R)
CN7102 7,5PIN → IC7501 2,6PIN CENTER/SUB WOOFER
Are the analog audio signals inputted to each pin
of IC7301, IC7401 and IC7501.
Are the analog audio signals outputted to each pin
of IC7301, IC7401 and IC7501.
IC7301 1,7PIN FRONT(L/R)
IC7401 1,7PIN SURROUND(L/R)
IC7501 1,7PIN CENTER/SUB WOOFER
Yes
Yes
No
No
No
Check each line and service it if defective.
No
Replace the DVD Main CBA Unit.
No
Yes
Do the mute signals of CN7102 on 5.1ch Amp
CBA become to "H" level?
FRONT(L) → CN7102 14PIN
FRONT(R) → CN7102 12PIN
SURROUND(L) → CN7102 10PIN
SURROUND(R) → CN7102 8PIN
CENTER → CN7102 6PIN
SUB WOOFER → CN7102 4PIN
Yes
Is the analog audio signal of each line outputted to
each terminal of JK7101 (as shown below) ?
IC7301 1PIN → JK7101 FRONT(L)
IC7301 7PIN → JK7101 FRONT(R)
IC7401 1PIN → JK7101 SURROUND(L)
IC7401 7PIN → JK7101 SURROUND(R)
IC7501 1PIN → JK7101 CENTER
IC7501 7PIN → JK7101 SUB WOOFER
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25
DVD-1940CI/758
BLOCK DIAGRAMS
System Control / Servo Block Diagram
12
7
8
9
10
11
REMOTE
SENSOR
RM2001
JK3501
1G
7G
~
23
17
~
a
b
c
d
e
GRID
FIP
SEGMENT
FL2001
IC2001
(FRONT PANEL CONTROL)
13
14
f
g
h
i
KEY
MATRIX
CN2001
CN2101
REMOCON
-IN
REMOCON
-OUT
AV CBA
FUNCTION CBA
IC3510
7
1
AMP
SW2101
POWER
CN2002
CN2102
D2182
LED CBA
POWER
STANDBY
TO POWER
SUPPLY
BLOCK
DIAGRAM
+5V
D2184 HDMI
(AMP)
16
12
13
17
21
22
23
24
31
32
6
REMOTE-IN2
POWER-LED
STANDBY-LED
2
2
POWER-LED
3
3
STANDBY-LED
5
5
KEY-2
4
4
HDMI-LED
RESET
IC2102
2
1
+3.3V
RESET
IC2103
1
3
+3.3V
RESET
16
REMOTE-IN1
POWER-DETECT
REMOTE-OUT
PW-SW
PWRCON
KEY-2
KEY-1
1
1
KEY-2
3
3
KEY-1
DRIVE
Q2100
DRIVE
Q2086
IC2101
ENERGY STAR
MICROCONTROLLER
PW-SW
PWRCON
POWER-DETECT
CN401
74
FP-DIN
22
28 FP-DIN
FP-DIN
22
12
FP-STB
24
2 FP-STB
FP-STB
24
73
FP-DOUT
21
27 FP-DOUT
FP-DOUT 21
75
FP-CLK
23
1 FP-CLK
FP-CLK
23
72
REMOTE1
25 REMOTE1 25
CN1001
HDMI
26 HDMI
26
253
13
ASPECT
3 ASPECT
3
CN601
CN1601
19 ASPECT
28 RX
28
CN401
CN1001
26 RX
29 TX
29
27 TX
IC301
(SERVO DRIVE)
CN301
M
SLED
MOTOR
M
SPINDLE
MOTOR
IC101
(MICRO CONTROLLER)
+-
+-
+-
+-
+-
+-
+-
SLED
MOTOR
DRIVE
FOCUS
ACTUATOR
DRIVE
SPINDLE
MOTOR
DRIVE
TRACKING
ACTUATOR
DRIVE
144
TRAY-IN
SLD
91
SPDL
90
TRACKING
DRIVE
145 FOCUS DRIVE
89
FS(+)
FS(-)
TS(+)
TS(-)
77
ADAC-MD
78 ADAC-MC
79 ADAC-ML
ADAC-MC
ADAC-ML
M-MUTE
254
AUDIO-MUTE
ADAC-MD
AUDIO-MUTE
256 M-MUTE
TXDV
RXDV
TRAY-IN
1
SP(+)
2
SP(-)
6
TRAY-IN
3
GND
4
SL(-)
5
SL(+)
VREF
RESET
84
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
87 SL-AMP
139 SP-ROT
+3.3V
1
2
6
7
5
3
13
14
12
142 FD-OFST
141 TD-OFST
DRIVE CBA
DVD MAIN CBA UNIT
TO DIGITAL SIGNAL
PROCESS BLOCK
DIAGRAM
TO AUDIO
BLOCK DIAGRAM
ADAC-MD
ADAC-MC
TO SACD
BLOCK DIAGRAM
140 SL-ADS
RESET
IC462
1
3
+3.3V
1
14
13
11
12
IC2321
(RS232C I/F)
2
3
JK2321
TX
4
4
RX
2
2
CN2321
CNF02
INTERFACE CBA
71
70
RS232C-
CONNECTOR
ICF13 (SW)
1
3
ICF12 (SW)
1
3
4
4
1 NOTE:
Either IC461 or IC462 is used for DVD MAIN CBA UNIT.
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26
DVD-1940CI/758
Digital Signal Process Block Diagram
C 16
D 18
A 17
B 15
DVD-LD 8
CD-LD 10
PD-MONI 7
FS(+) 2
FS(-) 3
TS(+) 1
TS(-) 4
CN201
CN201
CN201
IC201
(SW)
IC501 (SDRAM)
IC101 (MICRO CONTROLLER)
FS
FS(+)
SCK1
CD/DVD
FSEL CLK33M
FS(-)
TS(+)
TS(-)
TS
DETECTOR
CD/DVD 19
Q251,Q252
CD
DVD
AMP
Q253,Q254
AMP
4
1
3
6
GND(DVD-PD) 6
GND(CD-PD) 5
GND(LD) 9
RF
SIGNAL
PROCESS
CIRCUIT
DVD/CD
FORMATTER
AUDIO
I/F
VIDEO
I/F
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
GENERAL
I/O
INTERRUPT
CONTROLLER
TIMER
WATCH DOG
TIMER
REMOTE
CONTROL
32BIT CPU
STREAM
I/F
EXTERNAL
MEMORY
I/F
SDRAM
ECC
UMAC
117
118
116
115
133
134
131
132
126
124
125
123
86
DEBUG
BCU
INST
RAM
DATA
RAM
I2C-SDA
I2C-SCL
I2C-SDA
I2C-SCL
YC(0-7)
173
SD0/SPDIF
172
SD1
171
SD2
170
SD3
169
SD4
168
SD5
167
SD6
SD0/SPDIF
SD1
SD2
SD3
SD4
SD5
SD6
166
SD7
194
XSHD
192
XSAK
193
SDCK
XSHD
XSAK
SDCK
255
SACD-RESET
195
XSRQ
191
SDEF
SACD-RESET
XSRQ
SDEF
PSP-WCK
SACD-READY
SACD-DATA
PSP-WCK
SACD-READY
SACD-DATA
SACD-LATCH
SACD-LATCH
SACD
SACD
SDRAM DATA(0-15)
SDRAM ADDRESS(0-11)
SDRAM ADDRESS(0-11)
230
247
~
198
217
~
2
13
42
53
~
~
VIDEO SIGNAL
22
26
29
35
~
~
SDRAM DATA(0-15)
PICK-UP
UNIT
TO SYSTEM
CONTROL/SERVO
BLOCK DIAGRAM
TO AUDIO
BLOCK
DIAGRAM
27MHz
OSC
27MHz
CLOCK
X'TAL
OSC
CLK
GENE.
X101
DVD MAIN CBA UNIT
TO VIDEO
BLOCK
DIAGRAM
TO VIDEO
BLOCK
DIAGRAM
TO SACD
BLOCK
DIAGRAM
TO AUDIO
BLOCK
DIAGRAM
FDQ (0-15) FADR (0-19)
FLASH
ROM
29
36
38
45
~
~
FDQ (0-15)
FADR (0-19)
~
1
9
16
25
48
~
163 162
15
ICS03
10
14
7
15
CLOCK-PULSE
3
190
TO VIDEO
BLOCK
DIAGRAM
IC103 (FLASH ROM)
(CLOCK GENERATOR)
66
67
186
CLK27M
176
183
~
6
81
76
80
94
AUDIO SIGNAL
9
13
SCK2
TO VIDEO
BLOCK
DIAGRAM
CLK33M
TO SACD
BLOCK
DIAGRAM
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27
DVD-1940CI/758
Video Block Diagram
VIDEO SIGNAL
R(0-7)
ICF02 (SDRAM)
SDRAM
91
103
~
2
13
31
56
74
85
~
~
~
24
27
60
66
~
~
50
87
~
ICF01 (DIGITAL VIDEO CONVERTER)
ICF11 (HDTV VIDEO ENCODER)
SDRAM DATA(0-31)
SDRAM ADDRESS(0-10)
NOISE REDUCER,
DEINTERLACER,FRAME
RATE CONVERTER AND
SDRAM INTERFACE
INPUT PROCESOR
WITH AUTO SYNC
AND AUTO ADJUST
196
CLOCK
GENERATION
PLLS
OUTPUT
PROCESSOR WITH
SYNC GENERATION
AND DIGTAL ANALOG
CONVERTERS
VERTICAL
AND
HORIZONTAL
ENHANCERS
VERTICAL
AND
HORIZONTAL
SCALERS
YC(0-7)
YC(0-7)
YC(0-7)
199
205
~
YC(0-7)
140
145
~
148
155
~
136
137
130
135
~
126
127
49
56
~
57
58
~
61
65
~
75
79
~
68
70
~
VIDEO
DATA
CAPTURE
BLOCK
AUDIO
DATA
CAPTURE
BLOCK
B(0-7)
G(0-7)
R(0-7)
B(0-7)
G(0-7)
R(0-7)
G(0-7)
119
V-SYNC
118
H-SYNC
V-SYNC
H-SYNC
122
HDMI-DE
125
VCLK
2
1
66
80
XOR
MASK
PANEL
LINK
TRANSMITTER
8
8
VIDEO-Y(I/P)
10
10
VIDEO-C
6
6
VIDEO-Pb/Cb
4
4
VIDEO-Pr/Cr
JK1401
S-VIDEO OUT
Y
C
WF1
WF3
IC1402 (VIDEO DRIVER)
4dB
AMP
2dB
AMP
LPF
DRIVER
D/A
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
1
1
VIDEO-Y(I)
CN601
CN1601
WF2
TO DIGITAL
SIGNAL
PROCESS
BLOCK
DIAGRAM
DVD MAIN CBA UNIT
AV CBA
VIDEO OUT
(COMPOSITE)
VIDEO-Pb/Cb
OUT
VIDEO-Y
OUT
VIDEO-Pr/Cr
OUT
JK1404
TO AUDIO
BLOCK
DIAGRAM
HDCP
ENCRYPTION
ENGINE
HDCP
KEYS
EEPROM
REGISTERS
AND
CONFIGURATION
T.M.D.S DATA2-
CNF01
3
1
6
4
HDMI-CONNECTOR
T.M.D.S DATA2+
9
7
10
12
T.M.D.S DATA1-
T.M.D.S DATA1+
T.M.D.S DATA0-
T.M.D.S DATA0+
T.M.D.S CLOCK+
T.M.D.S CLOCK-
35
36
32
33
29
30
27
26
ICF09 (HDMI INTERFACE)
13
6
5
2
3
ICF04
(3.3V<-->5V CONVERTER)
16
15
DDC DATA
DDC CLOCK
E-DDC
MASTER
I2C
SLAVE
19
20
45
46
I2C-SCL
I2C-SDA
I2C-SCL
I2C-SDA
TO DIGITAL
SIGNAL
PROCESS
BLOCK
DIAGRAM
19
18
67
43
44
HPD
QF01
+3.3V
HOT PLUG
DETECT
ICF06
1
2
5
(FLIP FLOP)
F/F
3
191 XTAL-IN
CLOCK-PULSE
195
CLOCK-PULSE
SPDIF
PCM-DATA3
PCM-DATA2
PCM-DATA1
PCM-DATA0
PCM-LRCK
PCM-BCK
SCK2
TO DIGITAL
SIGNAL
PROCESS
BLOCK
DIAGRAM
TO DIGITAL SIGNAL
PROCESS BLOCK
DIAGRAM
5
7
8
9
10
11
12
6
I2C-SCL
I2C-SDA
39
38
37
23
24
22
21
32
63
D/A
D/A
HDTV
VIDEO
ENCODER
DEMUX
PLL
53-55,
58-62
4-9,
12,13
16-18,
26-30
B(0-7)
R(0-7)
R(0,1)
G(0-7)
B(2-7)
G(0-7)
B(2-7)/R(0,1)
B(0-7)
G(0-7)
SDRAM DATA(0-31)
SDRAM ADDRESS(0-10)
D/A
42
D/A
43
AUDIO SIGNAL
4
3
1
2
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28
DVD-1940CI/758
Audio Block Diagram
ICS02 (AUDIO DAC)
JK1202
BUFFER
MUTE-ON
Q1351
IC1201
Q1201
Q1202
(AMP)
AUDIO(L)-
OUT
FUNCTION
CONTROL
ENHANCED
MULTI-LEVEL
DELTA-SIGMA
MODULATOR
AUDIO(R)-
OUT
ADAC-MD
SACD-RESET
ADAC-MC
ADAC-ML
11
8
7
DAC
LPF+AMP R-CH
AUDIO(R)-MUTE
A-MUTE2
SPDIF
PCM-DATA3
PCM-DATA2
PCM-DATA1
PCM-DATA0
PCM-LRCK
PCM-BCK
12
DAC
LPF+AMP L-CH
30
DAC
LPF+AMP R-CH
31
DAC
LPF+AMP L-CH
28
DAC
LPF+AMP R-CH
29
DAC
LPF+AMP L-CH
9
DAC
LPF+AMP R-CH
10
DAC
LPF+AMP L-CH
Q1204
PCM
I/F
DSD-CLK
DSD-MXL
DSD-MXR
DSD-FL
DSD-FR
DSD-C
DSD-SW
DSD-LS
DSD-RS
SD6
SD5
SD2
SD3
SD1
SD4
PCM
FILTER
(X8 DF)
IC1204
AV CBA
5.1CH AMP CBA
DVD MAIN CBA UNIT
JK1404
DIGITAL
AUDIO
OUT
OPTICAL
COAXIAL
CN601
CN1601
12
12
AUDIO(L)
14
14
AUDIO(R)
19
19
AUDIO(R)-MUTE
16
16
SPDIF
CNS01
CN7102
19
13
FRONT-AUDIO(R)
17
11
SURROUND(L)
15
9
SURROUND(R)
13
7
CENTER
21
15
FRONT-AUDIO(L)
11
5
SUB WOOFER
18
12
AUDIO(R)-MUTE
16
10
SURROUND(L)-MUTE
14
8
SURROUND(R)-MUTE
12
6
CENTER-MUTE
20
14
AUDIO(L)-MUTE
10
4
SUB WOOFER-MUTE
22
16
AUDIO-MUTE2
9
3
AUDIO-MUTE
8
2
M-MUTE
MUTE-ON
1
7
2
6
MUTE-ON
IC7301
Q7307
Q7308
(AMP)
FRONT(L)-
OUT
FRONT(R)-
OUT
Q7302
JK7101
Q7301
MUTE-ON
1
7
2
6
Q7351
Q7352
MUTE-ON
IC7401
Q7403
Q7404
(AMP)
SURROUND(L)
-OUT
SURROUND(R)
-OUT
Q7402
Q7401
MUTE-ON
1
7
2
6
MUTE-ON
IC7501
Q7503
Q7504
(AMP)
CENTER
OUT
SUB
WOOFER
OUT
Q7502
Q7501
MUTE-ON
1
7
2
6
DSD
FILTER
(X8 DF)
51
50
49
48
47
46
37
38
39
40
41
42
43
44
45
2
3
SYSTEM
CLOCK
33
4
ICS10
1
2
4
ICS11
1
2
4
ICS07
2
1
4
SD0/SPDIF
SACD
SCK1
TO SACD
BLOCK
DIAGRAM
TO SACD
BLOCK
DIAGRAM
TO SACD
BLOCK
DIAGRAM
TO SYSTEM
CONTROL
/SERVO
BLOCK
DIAGRAM
TO VIDEO
BLOCK DIAGRAM
TO SYSTEM
CONTROL
/SERVO
BLOCK
DIAGRAM
TO DIGITAL
SIGNAL
PROCESS
BLOCK
DIAGRAM
36
SACD-RESET
TO DIGITAL
SIGNAL
PROCESS
BLOCK
DIAGRAM
AUDIO-MUTE
M-MUTE
AUDIO(L)-MUTE
AUDIO(R)-MUTE
SURROUND(L)-MUTE
SURROUND(R)-MUTE
CENTER-MUTE
SUB WOOFER-MUTE
DSD
I/F
Q7451
Q7452
Q7551
Q7552
(AND GATE)
(AND GATE)
(AND GATE)
Q1203
13
13
AUDIO(L)-MUTE
WF4
WF6
WF5
6
AUDIO(L)-MUTE
AUDIO SIGNAL
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29
DVD-1940CI/758
SACD Block Diagram
ICS01 (SACD MULTI CHANNEL SIGNAL PROCESS)
ICS12 (SD-RAM)
60
63
65
68
70
73
75
64
66
69
71
74
76
STREAM
MANAGER
XSHD
XSRQ
SDCK
SDEF
SACD-RESET
SACD-RESET
WCK
ADDRESS (0-11)
DATA (0-7)
SACD-READY
SACD-LATCH
SACD-DATA
XSRQ
SDEF
SACD-RESET
PSP-WCK
SACD-READY
SACD-LATCH
SACD-DATA
TO DIGITAL
SIGNAL PROCESS
BLOCK DIAGRAM
TO DIGITAL
SIGNAL PROCESS
BLOCK DIAGRAM
TO AUDIO
BLOCK DIAGRAM
TO AUDIO
BLOCK DIAGRAM
TO AUDIO
BLOCK DIAGRAM
SDCK
DSD
FADE
DSD
SIGNAL
PROCESS
DSD
OUTPUT
I/F
ADDRESS
BUS
DATA BUS
DST
DECODER
6
2
7
123
9
31
168
XSAK
167
166
164
165
173
174
175
176
169
170
171
172
11
CLK33M
148,149,151,152,
154-157,159-162
131-134,
136-139
19-24,
27-32
2,3,5,6,
8,9,11,12
55
56
ADAC-MD
ADAC-MC
ADAC-MD
ADAC-MC
3
4
CLK33M
TO SYSTEM
CONTROL/SERVO
BLOCK DIAGRAM
SURROUND(R)-MUTE
SURROUND(R)-MUTE
SURROUND(L)-MUTE
SURROUND(L)-MUTE
SUB WOOFER-MUTE
SUB WOOFER-MUTE
CENTER-MUTE
CENTER-MUTE
AUDIO(L)-MUTE
AUDIO(R)-MUTE
AUDIO(L)-MUTE
AUDIO(R)-MUTE
DSD-CLK
DSD-MXL
DSD-MXR
DSD-FL
DSD-FR
DSD-C
DSD-SW
DSD-LS
DSD-RS
DVD MAIN CBA UNIT
XSHD
XSAK
SD0/SPDIF
SD1
SD2
SD3
SD5
SD4
SD6
SD7
SACD-RESET
AUDIO SIGNAL
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DVD-1940CI/758
Power Supply Block Diagram
IC1006
(SHUNT REGULATOR)
AC1001
AC CORD
F1001
LINE
FILTER
L1001
D1001, D1002
D1004, D1005
2
4
7
3
4
IC1001
ERROR
VOLTAGE DET
T1001
11
12
13
15
14
16
17
18
1
2
6
BRIDGE
RECTIFIER
HOT
HOT CIRCUIT. BE CAREFUL.
D1003
RECTIFIER
D1010
D1016
Q1016
Q1005
Q1011
Q1002
CN1001
-FL
F1
P-ON+10V
EV+3.3V
P-ON+5V
4,5 EV+1.2V
6,7,8 EV+3.3V
11,12 EV+10V
10
P-ON+5V
1~3,9 P-ON+3.3V
20
PWRCON
D1030
F2
AV CBA
TO CN401
1A 250V
A V
F
REG
3
1
2
SCHOTTKY
BARRIER
D1006
SW+10V
Q1004
SW+5V
SW+3.3V
SWITCHING
SWITCHING
IC1002
+1.2V REG.
Q1015
SWITCHING
Q1006,Q1007
SWITCHING
(SWITCHING)
2
4
7
1
6
5
8
EN/UV
BP/M
D
S
S
S
S
Q1001
SCHOTTKY
BARRIER
D1008
MICON+3.3V
Q1022
SW+2.5V
RECTIFIER
RECTIFIER
RECTIFIER
Q1020
SW+3.3V
EV+5V
Q1014
SW+5V
Q1012
SWITCHING
TO
SYSTEM
CONTROL
/SERVO
BLOCK
DIAGRAM
PW-SW
PWRCON
POWER-DETECT
EV+1.2V
30
MICON+3.3V
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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DVD-1940CI/758
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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DVD-1940CI/758
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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DVD-1940CI/758
DVD Main 1/7 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
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DVD-1940CI/758
DVD Main 2/7 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
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DVD-1940CI/758
PIN.NO
PLAY
STOP
PIN.NO
PLAY
STOP
PIN.NO
PLAY
STOP
PIN.NO
PLAY
STOP
1
3.4
3.4
33
~
~
65
~
~
97
0.1
0.1
2
0
0
34
0
0
66
3.4
3.4
98
0.1
0.1
3
3.5
3.5
35
3.5
3.5
67
3.4
3.4
99
0.1
0.1
4
-----
-----
36
~
~
68
0
0
100
0.1
0.1
5
3.4
3.4
37
~
~
69
3.5
3.5
101
0.1
0.1
6
3.4
3.4
38
~
~
70
4.1
4.1
102
3.5
3.5
7
3.4
3.4
39
~
~
71
3.4
3.4
103
0.9
0.8
8
3.5
3.5
40
~
~
72
3.2
3.2
104
0
0
9
0
0
41
~
~
73
3.5
3.5
105
2.4
2.4
10
3.4
3.4
42
~
~
74
3.4
3.4
106
1.9
1.9
11
3.4
3.4
43
~
~
75
3.4
3.4
107
0.4
0.3
12
2.8
2.8
44
0
0
76
3.4
3.4
108
0
0
13
1.6
1.6
45
1.3
1.3
77
3.4
3.4
109
1.7
1.7
14
0
0
46
~
~
78
3.4
3.4
110
3.5
3.5
15
3.4
3.4
47
~
~
79
3.6
3.4
111
-----
-----
16
0
0
48
~
~
80
3.4
3.4
112
-----
-----
17
3.5
3.5
49
~
~
81
3.4
3.4
113
1.9
1.9
18
~
~
50
~
~
82
0
0
114
1.9
1.9
19
2.7
2.9
51
~
~
83
1.3
1.3
115
1.7
1.7
20
2.5
2.8
52
0
0
84
3.3
3.3
116
1.7
1.7
21
0
0
53
3.5
3.5
85
-----
-----
117
1.7
1.7
22
1.3
1.3
54
~
~
86
0.1
0.1
118
1.7
1.7
23
~
~
55
3.4
3.4
87
0
0
119
3.5
3.5
24
~
~
56
~
~
88
3.3
0
120
2.0
2.0
25
~
~
57
~
~
89
3.4
3.5
121
1.5
1.5
26
~
~
58
~
~
90
2.3
1.8
122
0
0
27
~
~
59
~
~
91
1.7
1.8
123
0.3
0.1
28
~
~
60
~
~
92
0
0
124
0.5
0
29
~
~
61
~
~
93
3.5
3.5
125
0.3
0.1
30
~
~
62
~
~
94
2.6
2.6
126
0
0
31
~
~
63
~
~
95
0.1
0.1
127
2.3
2.3
32
~
~
64
~
~
96
0.1
0.1
128
1.7
1.7
PIN.NO
PLAY
STOP
PIN.NO
PLAY
STOP
PIN.NO
PLAY
STOP
PIN.NO
PLAY
STOP
129
2.3
2.3
161
0
0
193
0.1
0.1
225
1.7
1.7
130
2.3
2.3
162
1.7
1.7
194
0.1
0.1
226
0
0
131
2.3
2.3
163
1.7
1.7
195
0.1
0.1
227
3.2
3.2
132
2.4
2.3
164
0
0
196
0
0
228
3.2
3.2
133
2.4
2.4
165
1.3
1.3
197
3.5
3.5
229
3.1
3.1
134
2.4
2.4
166
1.5
1.5
198
~
~
230
~
~
135
2.3
2.3
167
1.7
1.7
199
~
~
231
2.7
2.7
136
2.3
2.3
168
1.6
1.6
200
~
~
232
~
~
137
2.3
2.3
169
1.3
1.3
201
~
~
233
0
0
138
2.3
2.3
170
0.1
0.1
202
~
~
234
1.3
1.3
139
2.1
1.7
171
0.1
0.1
203
~
~
235
1.5
1.5
140
1.7
1.7
172
1.3
1.3
204
3.5
3.5
236
~
~
141
1.7
1.7
173
1.7
1.7
205
0
0
237
~
~
142
1.7
1.7
174
0
0
206
~
~
238
0
0
143
0
0
175
3.5
3.5
207
~
~
239
3.5
3.5
144
1.7
1.7
176
~
~
208
~
~
240
~
~
145
1.7
1.7
177
~
~
209
~
~
241
~
~
146
3.5
3.5
178
~
~
210
~
~
242
~
~
147
-----
-----
179
~
~
211
~
~
243
~
~
148
-----
-----
180
~
~
212
~
~
244
~
~
149
-----
-----
181
~
~
213
~
~
245
~
~
150
3.5
3.5
182
~
~
214
3.5
3.5
246
~
~
151
-----
-----
183
~
~
215
0
0
247
~
~
152
0
0
184
3.5
3.5
216
~
~
248
0
0
153
-----
-----
185
0
0
217
~
~
249
3.5
3.5
154
-----
-----
186
1.5
1.5
218
1.3
1.3
250
-----
-----
155
0
0
187
-----
-----
219
2.6
2.6
251
-----
-----
156
-----
-----
188
-----
-----
220
2.8
2.8
252
-----
-----
157
-----
-----
189
-----
-----
221
3.2
3.2
253
0
0
158
3.5
3.5
190
1.6
1.6
222
0
0
254
3.5
0.1
159
0
0
191
0.1
0.1
223
1.6
1.6
255
3.4
3.4
160
3.5
3.5
192
0.1
0.1
224
3.5
3.5
256
3.3
0.8
~ : Voltage is not consistent ----- : Not used Unit : Volts
IC101 Voltage Chart
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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DVD-1940CI/758
DVD Main 3/7 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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37
DVD-1940CI/758
DVD Main 4/7 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
TEL 13942296513 QQ 376315150 892498299
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DVD-1940CI/758
DVD Main 5/7 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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DVD-1940CI/758
DVD Main 6/7 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
TEL 13942296513 QQ 376315150 892498299
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40
DVD-1940CI/758
DVD Main 7/7 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
TEL 13942296513 QQ 376315150 892498299
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41
DVD-1940CI/758
AV 1/3 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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42
DVD-1940CI/758
AV 2/3 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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43
DVD-1940CI/758
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
AV 3/3, Function & LED 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
TEL 13942296513 QQ 376315150 892498299
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44
DVD-1940CI/758
5.1ch Amp 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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45
DVD-1940CI/758
Interface 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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46
DVD-1940CI/758
WAVEFORMS
WF6
WF1
WF3
WF4
WF5
WF2
Pin 16 of CN1601
Pin 8 of CN1601
C1402 PLUS LEAD
Pin 12 of CN1601
Pin 14 of CN1601
Pin 10 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% COLOR BAR
AUDIO: 1KHz, 0dB
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9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
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DVD-1940CI/758
WIRING DIAGRAM
CN201
CN301
TRAY-IN
CN401
CN1001
CN2001
CN2101
VIDEO-C
10
10
GND
9
9
VIDEO-Pr/Cr
4
4
GND
5
5
VIDEO-Pb/Cb
6
6
GND
7
7
VIDEO-Y(I/P)
8
8
CN601
AC CORD
FRONT(R)-
OUT
FRONT(L)-
OUT
SURROUND(R)-
OUT
SURROUND(L)-
OUT
CENTER
OUT
SUB WOOFER
OUT
S-VIDEO
OUT
REMOCON
-IN
REMOCON
-OUT
EV+1.2V
5
5
EV+3.3V
8
8
P-ON+3.3V
9
9
P-ON+5V
10
10
EV+1.2V
4
4
P-ON+3.3V
3
3
EV+10V
11
11
EV+10V
12
12
GND
13
13
GND
14
14
GND
15
15
GND
16
16
GND
17
17
GND
18
18
GND
19
19
FP-DOUT
21
21
FP-DIN
22
22
FP-CLK
23
23
FP-STB
24
24
REMOTE1
25
25
HDMI
26
26
EV+3.3V
7
7
EV+3.3V
6
6
EV+5V
27
27
RX
28
28
TX
29
29
MICON+3.3V 30
30
KEY-2
1
1
GND
2
2
CN001
CN7101
CNS01
CN7102
GND
3
3
AUDIO+3.3V
4
4
GND
1
1
GND
2
2
AUDIO+5V
5
5
AUDIO+10V
6
6
AUDIO+10V
7
7
AUDIO-MUTE
3
9
SUB WOOFER-MUTE 4
10
GND
1
7
M-MUTE
2
8
SUB WOOFER
5
11
CENTER-MUTE
6
12
CENTER
7
13
SURROUND(L)-MUTE 10
16
SURROUND(L)
11
17
SURROUND(R)-MUTE 8
14
SURROUND(R)
9
15
AUDIO(R)-MUTE
12
18
FRONT-AUDIO(R)
13
19
AUDIO(L)-MUTE
14
20
FRONT-AUDIO(L)
15
21
AUDIO-MUTE2
16
22
KEY-1
3
3
GND
4
4
AUDIO-GND
15
15
AUDIO-GND
11
11
AUDIO(L)
12
12
AUDIO(L)-MUTE 13
13
AUDIO(R)
14
14
FS
TS
DETECTOR
7
9 11 2
3
6
5
M
SLED
MOTOR
M
SPINDLE
MOTOR
SPDIF
16
16
AUDIO+5V
17
17
AUDIO+5V
18
18
AUDIO(R)-MUTE 19
19
4
CN2002
CN2102
EV+5V
1
1
POWER-LED
2
2
STANDBY-LED 3
3
HDMI-LED
4
4
KEY-2
5
5
GND
6
6
GND 3
SL(-) 4
SL(+) 5
TRAY-IN 6
FS(-) 3
TS(-) 4
GND(CD-PD) 5
GND(DVD-PD) 6
PD-MONI 7
DVD-LD 8
TS(+) 1
FS(+) 2
GND 11
NU 12
VREF 13
NU 14
B 15
C 16
GND(LD) 9
CD-LD 10
A 17
D 18
CD/DVD 19
P-ON+5V 20
SP(+) 1
SP(-) 2
LED CBA
CN2102 is soldered
directly to the PCB.
AV CBA
PWRCON
20
20
(CN1001 is soldered directly to the PCB.)
CN1601
(CN1601 is soldered directly to the PCB.)
DVD MAIN CBA UNIT
DRIVE CBA
PICK UP UNIT
5.1CH AMP CBA
FUNCTION CBA
CN2101 is soldered
directly to the PCB.
VIDEO-Y
OUT
VIDEO-Pb/Cb
OUT
VIDEO-Pr/Cr
OUT
DVD MECHANISM
VIDEO OUT
(COMPOSITE)
AUDIO(L)-
OUT
AUDIO(R)-
OUT
DIGITAL
AUDIO OUT
(COAXIAL)
DIGITAL
AUDIO OUT
(OPTICAL)
HDMI-CONNECTOR
P-ON+3.3V
2
2
P-ON+3.3V
1
1
ASPECT
3
3
VIDEO-Y(I)
2
2
CNF02
CN2321
D-GND
3
3
TX
4
4
EV+5V
1
1
RX
2
2
INTERFACE
CBA
RS232C-
CONNECTOR
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2
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0
5
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DVD-1940CI/758
LEAD IDENTIFICATIONS
1
2
3
8
5
4
1
1: R
2: A
3: K
1 2 3
1
2
4
3
1: A
2: K
3: E
4: C
1: GND
2: Vout
3: Vin
E C B
E C
B
1 2 3
E C B
B
C
E
2SD2144S
KTD882
B
C
E
2SC3422-Y(Q)
16
9
8
1
ADM232AARN
SP232ACN-L/TR
Note:
A: Anode
K: Cathode
E: Emitter
C: Collector
B: Base
R: Reference
G: Gate
D: Drain
S: Source
KIA4558P/P
UTC4558
MM1636XWRE
CXA1511M-T4
NJM4580M-TE1
NJM4580M-TE1-#ZZZB
UTC4558E
2SA1015-Y(TE2 F T)
2SA966-Y(TE6 F M)
KTA1266-Y-AT/P
2SC5343M Y
2SC5343MG-AT
2SC5344 Y
2SC2120-Y(TE2 F T)
KTC3203-Y-AT/P
2SC1815-(GR,Y)(TE2 F T)
KTA1267-Y-AT/P
KTC3199-(GR,Y)-AT/P
KRA110M-AT/P
2SA1980M Y
KTA1273-Y-AT/P
KRC103M-AT/P
KRA105M-AT/P
EL817B
EL817C
LTV-817C-F
PS2561A-1(W)
KIA2431AP-AT/P
LD1117SC-R
TLV1117IDCYRG3
UTC1117YA
16
9
8
1
MM1637XVBE
28
15
14
1
PT6313-S-TP(L)
SC16313G
0C-0805T*002
1
2
4
8
7
6
5
TNY277
1
2
3
5
4
PST3229NR
3
1
2
BMR-110529
1
8
9
16
32
25
17
24
M37544G2A-081GP#U0 R
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5
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DVD-1940CI/758
EXPLODED VIEWS
Cabinet
[A]
[B]
A16
2L011
2L011
2L011
2L011
2L011
2L106
JK1202
IC1204
2L106
2L021
2L021
2L107
2L071
2L041
2B2
2L051
A'
A
2L023
2L052
2L052
A11
A13
A12
A13
A15
A17
A2
2B1
2B4
2L102
2L102
2L023
A1X
A1X
2L041
A21
2L043
2L105
2L105
2L021
1B1
2L051
2B3
2B39
2L101
JK2321
2L109
2L108
2B6
AV CBA
2B5
JK1401
JK1404
LED CBA
F1001
2L041
JK3501
Function CBA
DVD Main CBA Unit
5.1ch Amp CBA
2B34
2L114
2L114
2L112
2B9
Interface CBA
2L113
2L081
Comparison Chart of
Models and Marks
Model
Mark
DVD1940CIBKE3
DVD758BKE3
A
B
JK7101
CN3002
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0
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DVD-1940CI/758
PARTS LIST OF EXPLODED VIEW
＊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 908
DVD MAIN CBA UNIT
N79DDKUP
1
*
00D 9H2 6000 909
AV ASSEMBLY
1VSA16019
1
*
AV CBA
-
FUNCTION CBA
-
LED CBA
-
5.1CH AMP CBA
-
INTERFACE CBA
-
A1X
00D 9H2 6000 897
FRONT ASSEMBLY
for DVD1940CI
1VM222985
1
*
A1X
00D 9H2 6000 898
FRONT ASSEMBLY
for DVD758
1VM223049
1
*
A2
00D 9H2 6000 899
TRAY PANEL ASSEMBLY
1VM425598
1
*
A11
00D 9H2 6000 566
INSULATOR ASSEMBLY (R)
1VM420732
1
A12
00D 9H2 6000 567
INSULATOR ASSEMBLY (L)
1VM420733
1
A13
00D 9H2 6000 323
FOOT
0VM406940A
2
A15
00D 9H2 6000 611
CHASSIS
1VM120073
1
A16
00D 9H2 6000 680
TOP COVER(BLACK)
1VM120074C
1
A17
00D 9H2 6000 900
REAR PANEL
for DVD1940CI
1VM222923
1
*
A17
00D 9H2 6000 901
REAR PANEL
for DVD758
1VM222925
1
*
A21
-
LABEL SERIAL NO.
-
1
1B1
00D 9H2 6000 755
DVD MECHA E7 (D)
N79D0KVM
1
2B2
-
POWER PCB HOLDER
0VM306801E
1
2B3
00D 9H2 6000 756
MAIN PCB HOLDER
1VM320650
1
2B4
00D 9H2 6000 780
LOADER BASE
0VM101367G
1
2B5
-
HOLDER F.I.P.
0VM416070
1
2B6
-
JACK PCB HOLDER
0VM101376F
1
2B9
00D 9H2 6000 758
D SUB HOLDER
1VM323220
1
2B34
00D 9H2 6000 769
CUSHION SPACER
1VM422273
2
2B39
00D 9H2 6000 770
REINFORCE PLATE
1VM321919
1
CN3002
00D 9H2 6000 902
WIRE ASSEMBLY 20P D 20P 207MM
WX1N79D0-
001
1
*
SCREWS
2L011
-
SCREW TAP TIGHT M3X5 BIND
HEAD+BLK NI
GBHC3050
5
2L021
-
SCREW P-TIGHT M3*12 BIND+
GBJP3120
4
2L023
-
SCREW C-TIGHT M3X6
0VM412937A
2
2L041
-
SCREW B-TIGHT M3X8 BIND HEAD+
GBHB3080
8
2L043
-
SCREW TAP TIGHT M3X5 BIND
HEAD+BLK NI
GBHC3050
1
2L051
-
SCREW S-TIGHT 3X8
0VM413320A
2
2L052
-
SCREW P-TIGHT M3X8 BIND HEAD+
GBJP3080
5
2L071
-
SCREW TAP TIGHT M3X5 BIND
HEAD+BLK NI
GBHC3050
1
2L081
00D 9H2 6000 759
HEXAGON SPACER E6AE0UD
1VM424730
2
2L101
-
SCREW C-TIGHT M3X6
0VM412937A
1
2L102
-
SCREW C-TIGHT M3X6
0VM412937A
4
2L105
-
SCREW P-TIGHT M3X8 BIND HEAD+
GBJP3080
3
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2
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8
0
5
1
5
1
3
6
7
3
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DVD-1940CI/758
2L106
-
SCREW C-TIGHT M3X6
0VM412937A
4
2L107
-
SCREW P-TIGHT M3X8 BIND HEAD+
GBJP3080
1
2L108
-
SCREW C-TIGHT M3X6
0VM412937A
2
2L109
-
SCREW P-TIGHT M3X8 BIND HEAD+
GBJP3080
1
2L112
-
SCREW C-TIGHT M3X6
0VM412937A
1
2L113
-
SCREW P-TIGHT M3X8 BIND HEAD+
GBJP3080
1
2L114
-
SCREW TAP TIGHT WASHER+ P-TIGHT
GCJP3080
2
Ref. No.
nsp
Part No.
Part Name
Remark
Q'ty
New
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52
DVD-1940CI/758
Packing
A22
S1
S2
S4
Unit
S2
X10
X5
X8
X2
X4
X12
X21
X1
A30
A30
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53
DVD-1940CI/758
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
for DVD1940CI
-
1
A22
-
BARCODE LABEL
for DVD758
-
1
A30
-
CONTROL LABEL
for DVD1940CI
-
2
A30
-
CONTROL LABEL
for DVD758
-
2
S1
00D 9H2 6000 904
GIFT BOX CARTON
for DVD1940CI
1VM323925
1
*
S1
00D 9H2 6000 905
GIFT BOX CARTON
for DVD758
1VM323926
1
*
S2
00D 9H2 6000 619
STYROFOAM
0VM101298B
1
S4
00D 9H2 6000 688
SET BAG
0DM400731D
1
X1
00D 9H2 6000 653
REMOTE CONTROL UNIT(RC-1017)
NA834UD
1
X2
-
DRY BATTERY R6P/2S
XB0M451T0001
2
X2
-
DRY BATTERY R6UW/2S
XB0M311MS001
2
X2
-
DRY BATTERY ES-GR6M-C
XB0M571GLP01
2
X4
-
ACCESSORY BAG
0VM416059
1
X5
00D 9H2 6000 226
AV CORD WPZ0102TM015
WPZ0102TM015
1
X5
AV CORD RCA(M*2)TO RCA(M*2)
WPZ0102LTE01
!
X8
00D 9H2 6000 887
AC CORD WITH A GND WIRE UL/CSA/
162/NO/BLACK
WAV0162LW001
1
X10
00D 9H2 6000 906
OWNERS MANUAL
for DVD1940CI
1VMN23655
1
*
X10
00D 9H2 6000 907
OWNERS MANUAL
for DVD758
1VMN23656
1
*
X12
-
SERVICE CENTER SHEET
1VM425536
1
X21
-
WARRANTY SHEET
1VM323952
1
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