索尼SONY HCD-GNZ88D音响图纸
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Ver. 1.3 2007. 08
Model Name Using Similar Mechanism
HCD-GNZ7D/GNZ8D/GNZ9D
DVD
DVD Mechanism Type
CDM74HF-DVBU101//C
Section
Optical Pick-up Name
KHM-310CAB/C2NP
Tape Deck
Model Name Using Similar Machanism
NEW
Section
SERVICE MANUAL
E Model
HCD-GNZ77D/GNZ88D
Amplifier section
HCD-GNZ88D
The following measured at AC 120, 127, 220, 240 V,
50/60 Hz
DIN power output (rated)
75 W + 75 W
(4 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
Front speaker:
100 W + 100 W
(4 ohms at 1 kHz, 10%
THD)
Center speaker:
40 W (8 ohms at 1 kHz,
10% THD)
Surround speaker:
40 W + 40 W
(8 ohms at 1 kHz, 10%
THD)
HCD-GNZ77D
The following measured at AC 120, 127, 220, 240 V,
50/60 Hz
DIN power output (rated)
75 W + 75 W
(4 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
100 W + 100 W
(4 ohms at 1 kHz, 10%
THD)
Inputs
VIDEO INPUT (phono jacks):
VIDEO: 1 Vp-p, 75 ohms
AUDIO L/R: Voltage 250 mV,
impedance 47 kilohms
TV/SAT AUDIO IN L/R (phono jack):
Voltage 250 mV/450 mV,
impedance 47 kilohms
SPECIFICATIONS
Outputs
VIDEO OUT (phono jack):
max. output level
1 Vp-p, unbalanced, Sync
negative load impedance
75 ohms
COMPONENT VIDEO OUT:
Y: 1 Vp-p, 75 ohms
PB/CB: 0.7 Vp-p, 75 ohms
PR/CR: 0.7 Vp-p, 75 ohms
S-VIDEO OUT (4-pin/mini-DIN jack):
Y: 1 Vp-p, unbalanced,
Sync. negative
C: 0.286 Vp-p, load
impedance 75 ohms
PHONES (stereo mini jack):
Accepts headphones of
8 ohms or more
FRONT SPEAKER:
Use only the supplied speakers
SURROUND SPEAKER (HCD-GNZ88D):
Use only the supplied speakers
CENTER SPEAKER (HCD-GNZ88D):
Use only the supplied speakers
SUB WOOFER OUT (phono jack):
Voltage 250 mV,
impedance 1 kilohm
Sony Corporation
Personal Audio Division
Published by Sony Techno Create Corporation
9-887-258-04
2007H04-1
© 2007. 08
– Continued on next page –
DVD DECK RECEIVER
(Photo: HCD-GNZ77D)
• HCD-GNZ77D/GNZ88D are the
tuner, deck, DVD and amplifier
section in MHC-GNZ77D/GNZ88D.
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HCD-GNZ77D/GNZ88D
SECTION 3
TEST MODE
[PANEL TEST MODE]
• This mode is used to check the fluorescent indicator tube, LEDs,
keys, VOLUME jog, model, destination, software version and
VACS level.
Procedure:
1.
Press x button, [ILLUMINATION] button and [DISC 2] button
simultaneously.
2.
All LEDs and segments in fluorescent indicator tube are lighted
up. All LEDs are lighted up in red color where the SUB
WOOFER ON/OFF LED is lighted up in green color.
3.
When you want to enter to the software version dispaly mode,
press [DISC 1] button. The model information appears on the
fluorescent indicator tube. Press [DISC 1] button again to view
the destination information.
4.
Each time [DISC 1] button is pressed, the display changes from
MC version, SYS version, UI version, DVD version, CDMA
version, CDMB version, ST version, TA version, TM version,
TC version in this order, and returns to the model version display.
5.
When [DISC 3] button is pressed while the version numbers are
being displayed except model and destination, the date of the
software creation appears. When [DISC 3] button is pressed
again, the display returns to the software version display. When
[DISC 1] button is pressed while the date of the software creation
is being displayed, the date of the software creation is displayed
in the same order of software version display.
6.
Press [DISC 2] button, the key check mode is activated.
7.
In the key check mode, the fluorescent indicator tube displays
“K 0 V0”.
Turn the [OPERATIONAL DIAL] clockwise; “K” value increases
by one. Turn the [OPERATIONAL DIAL] counterclockwise; “K”
value increases by one. Each time a button is pressed, “K” value
increases. Press other keys on main unit to check whether the
key is detected. However, once a button has been pressed, it is
no longer taken into account.
“V” value increases in the manner of 0, 1, 2, 3 ... if [VOLUME]
knob is turned clockwise, or it decreases in the manner of 0, 9,
8, 7 ... if [VOLUME] knob is turned counterclockwise.
8.
When [DISC 3] button is pressed after all LEDs and segments in
fluorescent indicator tube light up, the fluorescent indicator tube
displays “VACS A”. A is VACS level which is triggered by signal
level.
9.
When [DISC SKIP/EX-CHANGE] button is pressed after all LEDs
and segments in fluorescent indicator tube light up, alternate
segments in fluorescent indicator tube would light up. If you
press [DISC SKIP/EX-CHANGE] button again, another half of
alternate segments in fluorescent indicator tube would light up.
When [DISC SKIP/EX-CHANGE] button is pressed again, all
segments lights off. Press [DISC SKIP/EX-CHANGE] button again
would cause all segments lights up.
10. To release from this mode, press three buttons in the same
manner as step 1, or disconnect the power cord.
[COMMON TEST MODE]
• This mode is used to check operations of the respective sections
of Amplifier and Tape.
Procedure:
• To enter Common Test Mode
1.
Press x button, [ILLUMINATION] button and [DISC 3] button
simultaneously.
2.
The DVD ring indicators and the line below DVD ring indicator
flash synchronously on the fluorescent indicator tube. The
function is changed to TV where the function is changed to
DVD.
• Check of Amplifier
1.
Press [EQ BAND/MEMORY] button repeatedly until a message
“GEQ MAX” appears on the fluorescent indicator tube. GEQ
increases to its maximum.
2.
Press [EQ BAND/MEMORY] button repeatedly until a message
“GEQ MIN” appears on the fluorescent indicator tube. GEQ
decreases to its minimum.
3.
Press [EQ BAND/MEMORY] button repeatedly until a message
“GEQ FLAT” appears on the fluorescent indicator tube. GEQ
is set to flat.
4.
When the [VOLUME] knob is turned clockwise even slightly,
the sound volume increases to its maximum and a message
“VOLUME MAX” appears on the fluorescent indicator tube.
5.
When the [VOLUME] knob is turned counterclockwise even
slightly, the sound volume decreases to its minimum and a
message “VOLUME MIN” appears on the fluorescent indicator
tube.
• Tape function
1.
When a tape is inserted in Deck B and recording is started, the
function is changed to TV automatically. The function is change
to DVD automatically when a tape is inserted in Deck B and
recording is started. When [CD SYNC] button is pressed during
recording in function, ALC (Automatic Logic Control) is turned
on.
2.
During recording, press m button will stop the recording and
the function is changed to TAPE B and rewind the tape in Deck
B until the recording start position and playback of the tape in
Deck B is started. If the [REC PAUSE/START] button is pressed
for a pause and pressed again to resume recording during
recording time, when the tape is rewind, the tape will be rewind
until the position where the pause is applied.
• To release from Common Test mode
1.
To release from this mode, press ?/1 button.
2.
The cold reset is enforced at the same time.
[COLD RESET]
• The cold reset clears all data including preset data stored in the
RAM to initial conditions. Execute this mode when returning
the set to the customer.
Procedure:
1.
Press ?/1 button to turn on the system.
2.
Press x button, [ILLUMINATION] button, and ?/1 button
simultaneously.
3.
The message “COLD RESET” appears on the fluorescent
indicator tube. Then, the fluorescent indicator tube becomes
blank for a while, and the system is reset.
[VACS ON/OFF]
• This mode is used to switch on and off the VACS (Variable
Attenuation Control System).
Procedure:
1.
Press ?/1 button to turn on the system.
2.
Press x button, [DIRECTION] button and [DISC 1]
simultaneously. The message “VACS OFF” or “VACS ON”
appears on the fluorescent indicator tube.
[TUNER STEP CHANGE]
• The step interval of AM channels can be toggled between 9 kHz
and 10 kHz. This mode is not available for Saudi Arabia and
Russia models.
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HCD-GNZ77D/GNZ88D
Procedure:
1.
Press ?/1 button to turn on the system.
2.
Press [TUNER/BAND] button repeatedly to select the “AM”.
3.
Press ?/1 button to turn off the system.
4.
Press [ILLUMINATION] button and ?/1 button simultaneously.
The system will turn on automatically. The message “AM 9K
STEP” or “AM 10K STEP” appears on the fluorescent indicator
tube and thus the channel step is changed.
[DVD SHIP MODE (WITH MEMORY CLEAR)]
• This mode moves the optical pick-up to the position durable to
vibration and clears all data including preset data stored in the
RAM to initial conditions. Use this mode when returning the
set to the customer after repair.
Procedure:
1.
Press ?/1 button to turn on the system.
2.
Select DVD function.
3.
Press x button, [DIRECTION] button and ?/1 button
simultaneously during “DVD NO DISC” condition. The system
will turn off automatically.
4.
After the “STANDBY” blinking display finishes, a message
“MECHA LOCK” appears on the fluorescent indicator tube and
the DVD ship mode is set.
[DVD SHIP MODE (WITHOUT MEMORY CLEAR)]
• This mode moves the optical pick-up to the position durable to
vibration. Use this mode when returning the set to the customer
after repair.
Procedure:
1.
Press ?/1 button to turn on the system.
2.
Select DVD function.
3.
Press [DVD] button and ?/1 button simultaneously during “DVD
NO DISC” condition. The system will turn off automatically.
4.
After the “STANDBY” blinking display finishes, a message
“MECHA LOCK” appears on the fluorescent indicator tube and
the DVD ship mode is set.
[DVD TRAY LOCK MODE]
• This mode let you lock the disc tray. When this mode is
activated, the disc tray will not open when [OPEN/CLOSE]
button or [DISC SKIP/EX-CHANGE] button is pressed. The
message “LOCKED” will appears on the fluorescent indicator
tube.
Procedure:
1.
Press ?/1 button to turn on the system.
2.
Select DVD function.
3.
Press x button and [OPEN/CLOSE] button simultaneously and
hold down until “LOCKED” or “UNLOCKED” appears on the
fluorescent indicator tube (around 5 seconds).
[TCM OFFLINE MODE]
• This mode prevents the system from turning off automatically
when TCM is not connected. Therefore, measurements can be
done even when TCM is not connected during production.
Procedure:
1.
When the system is turned off, press [EQ BAND/MEMORY]
button, [TAPE A/B] button and ?/1 button simultaneously. The
system will turn on automatically.
2.
The message “TCM OFFLINE” will appears on the fluorescent
indicator tube.
• To release from TCM Offline Mode
To release from this mode, perform “COLD RESET” or turn off
the power supply.
[TV/SAT SWITCHING]
• This mode let you switch from TV to SAT and vice-versa.
Procedure:
1.
Press ?/1 button to turn on the system.
2.
Select TV function.
3.
Press [TV/SAT] button and ?/1 button simultaneously. The
function will change to SAT. Press the same buttons again to
change from SAT to TV.
[DVD COLOR SYSTEM]
• This mode let you change the color system of the video output
from PAL to NTSC or vice-versa. This mode is not available for
Latin American and Russian models.
Procedure:
1.
Press ?/1 button to turn on the system.
2.
Select DVD function.
3.
Press ?/1 button again to turn off the system.
4.
Press X button and ?/1 button simultaneously. The system
will turn on automatically.
The message “COLOR PAL” or “COLOR NTSC” appears on
the fluorescent indicator tube.
[REMOTE DISABLE MODE]
• This mode let you disable the remote commander reception.
When this mode is activated, the system will not response if the
button on the remote commander is pressed. The message “RM
DISABLE” appears on the fluorescent indicator tube.
This mode is essential for conducting test and repairing when
no interruption from the other remote commander is expected.
This mode is cancelled automatically when the system is turned
off.
Procedure:
1.
Press ?/1 button to turn on the system.
2.
Press x button, [DIRECTION] button and [DISC 3] button
simultaneously until “SIRCS ON” or “SIRCS OFF” appears on
the fluorescent indicator tube.
[PROGRESSIVE]
• This mode let you change the format of the video output from
the COMPONENT OUT jacks among PROGRESSIVE AUTO,
PROGRESSIVE VIDEO and INTERLACE.
Procedure:
1.
Press ?/1 button to turn on the system.
2.
Press [DVD] button and [DISPLAY] button simultaneously. “P
AUTO” or “P VIDEO” or “INTERLACE” appears on the
fluorescent indicator tube.
[MTK FIRMWARE DISPLAY]
• This mode is used to display the MTK firmware version.
Procedure:
1.
Press ?/1 button to turn on the system.
2.
Press [DVD] button to switch to DVD function.
3.
Press ?/1 button again to turn off the system.
4.
Press x button and ?/1 button. The system turns on
automatically.
5.
The version of MTK firmware appears on the TV screen.
[DVD SERVICE MODE]
• This mode let you make diagnosis and adjustment easily by
using the remote commander and the TV. The instructions,
diagnostic results, etc. are given on the on-screen display.
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HCD-GNZ77D/GNZ88D
• TEST DISC LIST
Be sure to use the DVD disc that matches the signal standards of
your region.
• CD
YEDS-18 (Part No.: 3-702-101-01)
PATD-012 (Part No.: 4-225-203-01)
• DVD SL (Single Layer)
NTSC : HLX-503 (Part No.: J-6090-069-A)
HLX-504 (Part No.: J-6090-088-A)
PAL
: HLX-506 (Part No.: J-6090-077-A)
• DVD DL (Dual Layer)
NTSC : HLX-501 (Part No.: J-6090-071-A)
HLX-505 (Part No.: J-6090-089-A)
PAL
: HLX-507 (Part No.: J-6090-078-A)
• Procedure to enter to DVD Service Mode:
1.
Press ?/1 button to turn on the system.
2.
Select DVD function.
3.
Press x button and [OPEN/CLOSE] button simultaneously and
then turn the [VOLUME] knob clockwise.
4.
The message “SERVICE IN” appears on the fluorescent
indicator tube and the Top Menu of Remocon Diagnosis Menu
appears on the on-screen display on the TV. The model name
and revision number is displayed at the bottom of the on-screen
display.
3.
Select “6. Iop:” by pressing [6] button on the remote commander.
4.
Wait until a hexadecimal number appears in the on-screen
display as below:
Remocon Diagnosis Menu
0. External Chip Check
1. Servo Parameter Check
2. Drive Manual Operation
3. Emergency History
4. Version Information
Model Name
: GML6DS_ME
IF-con
: V
Syscon
: Ver.
er. 01.00 (0000)
0.302
5.
To execute each function, press its number by using numeric
button on the remote commander.
6.
To release from this mode, press ?/1 button to turn off the
system.
• Execute IOP Measurement
In order to execute IOP measurement, the following standard
procedures must be followed.
1.
From the Top Menu of Remocon Diagnosis Menu, select “2.
Drive Manual Operation” by pressing the [2] button on the
remote commander. The following screen appears on the on-
screen display.
Drive Manual Operation
1. Servo Control
2. Track/Layer Jump
3. Manual Adjustment
4. Mecha test Mode
5. MIRR time Adjust
0. Return to Top Menu
2.
Select “3. Manual Adjustment” by pressing the [3] button on
the remote commander. The following screen appears on the
on-screen display.
Manual Adjust
1. Track Balance Adjust:
2. Track Gain Adjust:
3. Focus Balance Adjust:
4. Focus Gain Adjust:
5. Eg Boost Adjust:
6. Iop:
7. TRV. Level:
8. S curve(FE) Level:
9. RFL(PI) Level:
0. MIRR Time:
O o Change Value
RETURN Return to previous menu
Manual Adjust
1. Track Balance Adjust:
2. Track Gain Adjust:
3. Focus Balance Adjust:
4. Focus Gain Adjust:
5. Eg Boost Adjust:
6. Iop. ED:
7. TRV. Level:
8. S curve(FE) Level:
9. RFL(PI) Level:
0. MIRR Time:
O o Change Value
RETURN Return to previous menu
5.
Convert data from hexadecimal to decimal by using conversion
table.
6.
Please find the label on the rear of the BU (Base Unit).
The default IOP value is written in the label.
7.
Subtract between these two values.
8.
If the remainder is smaller than 93 (decimal), then it is OK.
However if the value is higher than 93, then the BU is defective
and need to be change.
9.
Press [RETURN] button on the remote commander to return to
previous menu.
10. Press [0] button on the remote commander to return to the Top
Menu of Remocon Diagnosis Menu.
11. Press ?/1 button to turn off the system.
• Check Emergency History
To check the emergency history, please follow the following
procedure.
1.
From the Top Menu of Remocon Diagnosis Menu, select “3.
Emergency History” by pressing the [3] button on the remote
commander. The following screen appears on the on-screen
display.
Ver. 1.3
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HCD-GNZ77D/GNZ88D
2.
You can check the total time when the laser is turned on during
playback of DVD and CD from the above menu. The maximum
time, which can be displayed are 999h 59min.
3.
You can check the error code of latest 10 emergency history
from the above menu. To view the previous or next page of
emergency history, press . or > on the remote
commander. The error code consists of
• Error Code
Example of Error code
1. 01 05 04 04
00 92 46 00
00 00 00 00
00 00 23 45
The meaning of error code is as below:
01: Communication error (No reply from syscon)
02: Syscon hung up
03: Power OFF request when syscon hung up
19: Thermal shutdown
24: MoveSledHome error
25: Mechanical move error (5 Changer)
26: Mechanical move stack error
30: DC motor adjustment error
31: DPD offset adjustment error
32: TE balance adjustment error
33: TE sensor adjustment error
34: TE loop gain adjustment error
35: FE loop gain adjustment error
36: Bad jitter after adjustment
40: Focus NG
42: Focus layer jump NG
52: Open kick spindle error
51: Spindle stop error
60: Focus on error
61: Seek fail error
62: Read Q data/ID error
70: Lead in data read fail
71: TOC read time out (CD)
80: Can’t buffering
81: Unknown media type
• Parameter of error code
This is the detail of error code.
Example of Error code
1. 01 05 04 04
00 92 46 00
00 00 00 00
00 00 23 45
• Time of error code
This is the laser time when an error occurred.
Example of Error code
1. 01 05 04 04
00 92 46 00
00 00 00 00
00 00 23 45
To clear the Laser Hour
Press [DISPLAY] button and then press [CLEAR] button. The data
for both CD and DVD data are reset.
Emg.History Check
1. 01 05 04 04
Laser Hours
CD
0h
0min
DVD
0h
0min
00 92 46 00
00 00 00 00
00 00 23 45
2. 02 02 01 01
00 A9 4B 00
00 00 00 00
00 00 23 45
Next Next Page Prev Prev Page
O Return to Top Menu
To clear the Emergency History
Press [TOP MENU] button and then press [CLEAR] button. The error
code for all emergency history would be reset.
Emg.History Check
1. 00 00 00 00
Laser Hours
CD
999h
59min
DVD
999h
59min
00 00 00 00
00 00 00 00
00 00 00 00
2. 00 00 00 00
00 00 00 00
00 00 00 00
00 00 00 00
Next Next Page Prev Prev Page
O Return to Top Menu
Ver. 1.3
Emg.History Check
1. 01 05 04 04
Laser Hours
CD
999h
59min
DVD
999h
59min
00 92 46 00
00 00 00 00
00 00 23 45
2. 02 02 01 01
00 A9 4B 00
00 00 00 00
00 00 23 45
Next Next Page Prev Prev Page
O Return to Top Menu
To clear the Initialize Setup Data
Press [MENU] button and then press [CLEAR] button on the remote
commander.
Emg.History Check
Initialize setup data...
Laser Hours
CD
999h
59min
DVD
999h
59min
Next Next Page Prev Prev Page
O Return to Top Menu
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HCD-GNZ77D/GNZ88D
To return to the Top Menu of Remocon Diagnosis Menu
Press [0] button on the remote commander.
• Check Version Information
To check the version information, please follow the following
procedure.
1.
From the Top Menu of Remocon Diagnosis Menu, select “4.
Version Information” by pressing the [4] button on the remote
commander. The following screen appears on the on-screen
display.
To return to the Top Menu of Remocon Diagnosis Menu, press
[0] on the remote commander.
Version information
O Return to Top Menu
Firm (Main) : Ver. xxxxx
Firm (Sub) : xxxxx
RISC : xxxxx
8032 : xxxxx
Audio DSP : xxxxx
Servo DSP : xxxxx
SECTION 4
MECHANICAL ADJUSTMENTS
Precaution
1.
Clean the following parts with a denatured alcohol-moistened
swab:
record/playback heads
pinch rollers
erase head
rubber belts
capstan
idlers
2.
Demagnetize the record/playback head with a head
demagnetizer.
3.
Do not use a magnetized screwdriver for the adjustments.
4.
After the adjustments, apply suitable locking compound to the
parts adjusted.
5.
The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
Torque Measurement
3.06 N • m to 6.96 N • m
31 to 71 g • cm
(0.43 – 0.98 oz • inch)
0.19 N • m to 0.58 N • m
2 to 6 g • cm
(0.02 – 0.08 oz • inch)
3.06 N • m to 6.96 N • m
31 to 71 g • cm
(0.43 – 0.98 oz • inch)
0.19 N • m to 0.58 N • m
2 to 6 g • cm
(0.02 – 0.08 oz • inch)
6.96 N • m to 14.02 N • m
71 to 143 g • cm
(0.98 – 1.99 oz • inch)
9.80 N • m
100 g or more
(3.53 oz or more)
9.80 N • m
100 g or more
(3.53 oz or more)
Mode
Torque meter
CQ-102C
CQ-102C
CQ-102RC
CQ-102RC
CQ-201B
CQ-403A
CQ-403R
Meter reading
FWD
FWD
back tension
REV
REV
back tension
FF/REW
FWD tension
REV tension
Ver. 1.3
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HCD-GNZ77D/GNZ88D
SECTION 5
ELECTRICAL ADJUSTMENTS
VIDEO SECTION
Video Level Check (VIDEO BOARD)
Purpose
This adjustment is made to satisfy the NTSC standard, and if not
adjusted correctly, the brightness will be too large or small.
Procedure:
1.
Connect oscilloscope to VIDEO output.
2.
Load a DVD reference disc playback.
3.
Check the video signal level is 1.00±0.07Vp-p.
DVD SECTION
When the optical pick-up assy is replaced, perform the “Execute
IOP Measurement”.
Execute IOP Measurement (See page 21)
[TEST DISC LIST]
Be sure to use the DVD disc that matches the signal standards of
your region.
• CD
YEDS-18 (Part No.: 3-702-101-01)
PATD-012 (Part No.: 4-225-203-01)
• DVD SL (Single Layer)
NTSC : HLX-503 (Part No.: J-6090-069-A)
HLX-504 (Part No.: J-6090-088-A)
PAL
: HLX-506 (Part No.: J-6090-077-A)
• DVD DL (Dual Layer)
NTSC : HLX-501 (Part No.: J-6090-071-A)
HLX-505 (Part No.: J-6090-089-A)
PAL
: HLX-507 (Part No.: J-6090-078-A)
[RFMON Level Check]
Connection:
Procedure:
1.
Connect an oscilloscope to CN105 pin 6 (RFMON) and
CN105 pin 3 (GND) on the DMB15 board.
2.
Turn the power on.
3.
Set the test disc (refer to the TEST DISC LIST) on the tray
and press H button to playback.
4.
Confirm that oscilloscope waveform is clear and check
RFMON signal level is correct or not.
Note:
A clear RFMON signal waveform means that the shape “◊” can be
clearly distinguished at the center of the waveform.
Checking Location: DMB15 board (Side A)
+
–
CN105 pin 6 (RFMON)
CN105 pin 3 (GND)
oscilloscope
DMB15 board
VOLT/DIV: 200 mV
TIME/DIV: 500 ns
RFMON signal waveform
level: 0.58 ± 1.23 Vp-p (DVD)
0.57 ± 1.1 Vp-p (CD)
IC102
IC101
IC104
IC201
CN105
CN106
CN105 pin 3 (GND)
CN105 pin 6 (RFMON)
1
6
DMB15 BOARD (SIDE A)
oscilloscope
set
J1902
VIDEO OUTPUT
75 Ω
1.00 ± 0.07 Vp-p
(WHITE 100%)
Ver. 1.3
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HCD-GNZ77D/GNZ88D
0 dB=0.775 V
DECK SECTION
1.
Demagnetize the record/playback head with a head
demagnetizer.
2.
Do not use a magnetized screwdriver for the adjustments.
3.
After the adjustments, apply suitable locking compound to the
parts adjust.
4.
The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
5.
The adjustments should be performed in the order given in this
service manual. (As a general rule, playback circuit adjustment
should be completed before performing recording circuit
adjustment.)
6.
The adjustments should be performed for both L-CH and R-
CH.
7.
Switches and controls should be set as follows unless otherwise
specified.
• Test Tape
Record/Playback Head Azimuth Adjustment
Note: Perform this adjustments for both decks
Procedure:
1.
Mode: Playback
Tape
Signal
Used for
P-4-A063
6.3 kHz, –10 dB
Azimuth Adjustment
DECK A DECK B
3.
Mode: Playback
4.
After the adjustments, apply suitable locking compound to the
pats adjusted.
Adjustment Location: Playback Head (Deck A).
Record/Playback/Erase Head (Deck B).
set
MAIN board
IC101
Pin 28 (L-CH)
Pin 37 (R-CH)
MAIN board
IC101
Pin 36 (GND)
+
–
level meter
test tape
P-4-A063
(6.3 kHz, –10 dB)
MAIN
board
IC101
test tape
P-4-A063
(6.3 kHz, –10 dB)
pin 37
oscilloscope
L-CH
R-CH
V
H
waveform of oscilloscope
in phase 45°
90°
135° 180°
good
wrong
pin 36
pin 28
L
R
forward
forward
2.
Turn the adjustment screw and check output peaks. If the peaks
do not match for L-CH and R-CH, turn the adjustment screw
so that outputs match within 1dB of peak.
screw
position
L-CH
peak
within
1dB
output
level
L-CH
peak
R-CH
peak
within
1dB
screw
position
R-CH
peak
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HCD-GNZ77D/GNZ88D
HCD-GNZ77D/GNZ88D
6-1. BLOCK DIAGRAM — RF/SERVO SECTION —
: CD PLAY
: DVD PLAY
: SACD PLAY
• Signal Path
DETECTOR
6
2
3
4
5
11
10
19
18
252
253
DVDRFIP
DVDA
DVDB
DVDC
DVDD
TPI
TNI
MC
MD
C
D
LD01
MD12
LD02
MSW
MD11
OSP
OSN
CD/DVD RF AMP,
FOCUS/TRACKING ERROR AMP
DVD SYSTEM PROCESSOR
DIGITAL SERVO PROCESSOR
IC102(1/2)
OPTICAL PICK-UP
BLOCK
2AXIS
DEVICE
FOCUS/
TRACKING
COIL
23
20
LI M SW
176
22
21
36
48
43
37
1
AUTOMATIC POWER
CONTROL (FOR DVD)
Q102 (2/2)
VOLUME CONTROL
Q101, Q103
L
AUTOMATIC POWER
CONTROL (FOR CD)
Q102 (1/2)
LASER
DIODE
(FOR CD)
LASER
DIODE
(FOR DVD)
FOCUS COIL
DRIVE
42
41
BUFFER
35
3
34
4
TRACKING COIL
DRIVE
32
38
42
37
41
30
47
FOCUS/TRACKING COIL DRIVER,
SPINDLE, SLED MOTOR DRIVER
IC201
27
28
SPINDLE MOTOR
DRIVE
M
SPINDLE
46
47
FMO
FOO
DMO
TRO
V REFO
SPFG
40 IOPMON
FOO
RF
A
B
C
D
F
E
CD LD
PD
LIMIT
VR650
VR780
MSW
DVD LD
FCS+
FCS–
TRK+
VCC
TRK–
SP+
SP–
SL+
SL–
D
C
B
A
V1P4
V1P4
9
NB
B
8
NA
A
30
29
SLED MOTOR
DRIVE
MM
50
BUFFER
19
20
22
21
40
45
SYSTEM
CONTROL
IC401(1/4)
99
IFCK
MTK_CLK
33
100
XIFCS
MTK_XIFCK
27
110
PRST
MTK_RESET
26
98
IFSDO
MTK_SOD
32
101
IFSDI
105
IFBSY
KRMOD/HSYNC
MTK BUSY
28
KRMOD
24
MTK_SIO
31
TRO
FMO
FOO
DMO
TRO
10
13
FMO
DMO
211 MUTE123
210 MUTE
170 TSDM
207
MIC STATUS
25
MIC/VSYNC 205
SLED
SECTION 6
DIAGRAMS
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HCD-GNZ77D/GNZ88D
HCD-GNZ77D/GNZ88D
6-2. BLOCK DIAGRAM — VIDEO SECTION —
DVD SYSTEM PROCESSOR
IC102(2/2)
217
ASDAT0
ASDAT1
ASDAT2
ASDAT4
225
SDPIF
EEPROM
IC103
6
5
SCL
SDA
CE
WE
OE
FLASH ROM
IC101
125-123, 121, 120, 118,
117, 115, 135, 133-128, 126
146, 147, 149-151,
158-160, 162, 164-166
22-26,
29-35
HIGHA0-7
IOA0-7, IOA18-IOA21
A16, A17
AD0 – AD7
A1-A21
DATA & ADDRESS BUS
DATA & ADDRESS BUS
81-84,86-88,91
53-61, 67-72, 74-76,
78, 89, 92, 93
HD0 – HD7
A0 – A21
HD0 – HD7
A0
26
45
CE
WE
28
OE
11
A0 – A19
DQ15/A-1
77
IOCS
IOWA
79
IOUE
66
DQ0 – DQ7
RCLK
CE
WE
OE
SDRAM
IC104
38
DRCLK
RD0 – RD15
RA0 – RA11
RA0 – RA11
RD0 – RD15
142
RCS
19
RCS
138
RWE
16
RWE
140
RAS
18
RAS
139
CAS
17
CAS
DQM0
15
DQM0
DQM1
39
DQM1
CKE
37
DRCKE
102
SCL
103
SDA
143
BA0
20
BS0
BA1
21
BS1
29,31,33,35,38,40,42,44
25-16, 10 -1, 48
145
156
113 137 157
2,4,5,7,8,10,11,13,42,44,45,47,48,50,51,53
218
46
LOUT2+
SURROUND L
IC3731
GNZ77D
D/A CONVERTER
IC301
IC3751 (1/2)
IC3751 (2/2)
IC3771
IC3711
45
LOUT2–
219
222
203
YUV6
49
WIDE
48
DSEL
196
YUV2
194
YUV1
200
YUV4
202
YUV5
198
YUV3
220
XRST
215
ACLK
214
ABCK
213
ALRCK
14 SDTI1
V
C
Y
YG
CR/B
CB/R
WIDE
DSEL
(SL)
15 SDTI2
16 SDTI3
13 SDTI4
8
PDN
10 MCLK
9
BICK
17 LRCK
19 SCL
20 SDA
42
CENTER
41
40
SUBWOOFER
39
38
DOWNMIX L
37
2
FRONT L
1
DIGITAL
OPTICAL
TRANSMITTER
IC508
DVD
DIGITAL
OUT
LOUT3+
LOUT3–
(FC)
ROUT3+
ROUT3–
(SW)
LOUT4+
LOUT4–
(DMIXL)
LOUT1+
LOUT1–
(FL)
GNZ77D
B
MAIN
SECTION
208
SMSCK
206
VOICE
VOICE
SCORE
A
MAIN
SECTION
C
MAIN
SECTION
XTALI
XTALO
229
228
X101
27MHz
• Signal Path
: VIDEO
: COMPONENT VIDEO
: AUDIO
: DIGITAL
(Page 29)
(Page 29)
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HCD-GNZ77D/GNZ88D
HCD-GNZ77D/GNZ88D
6-3. BLOCK DIAGRAM — MAIN SECTION —
57 FRONT
CENTER
SUBWOOFER
SURROUND L
FRONT L
DOWNMIX L
DVD/CD
Z0
TU–LCH
LINE
VIDEO
MIC
4
3
29
5
VRSW
Z1
3
X0
23
12
TONE L
1
SW CHANNEL
SELECT
28
FRONT L
7
MUSIC L+R
53
L+R LIGHTING
26
F/B
37
FRONT R
GNZ88D
R–CH
R–CH
4
Z
14
X
5
VOL1
6
VOL2
7
VO 3
29
POOUT
15 MIC1P
16 MIC2P
21
MCO
42
TONE R
X1
13
Z–Z1
9
2
SURR CHANNEL
SELECT
X–X1
SL OUT
SW OUT
CENTER
SW OUT
FRONT L
ADC RESET
DBFB FEED BACK
11
88
VACS IN
66
IO EXP DATA OUT
68
IO EXP RST
69
IO EXP CLK
70
IO EXP LAT
26
D1
V
C
Y
YG
WIDE
CB/R
DSEL
INIT
NSP MUTE
SOFT MUTE
4
LATCH
3
CLK
2
RESET
DATA
CLK
RST
DATA
LAT
LAT
CLK
RST
22
VIDEO OUT SW
21
VIDEO MUTE
24
FAN CNT
22
ADC RESET
8
DO
6
DI
7
CL
9
CE
1
TUNED
R–CH
R–CH
FM 75Ω
COAXIAL
DIN
DOUT
CLK
CE
TUNED
ST A+9V
5
LCH
3
RCH
R–CH
4
+9V
5
2
59
PB A
75
PB B
76
REC
17
CLK
34
DATA
35
CLK
84
DIN
37
DOUT
39
CLK
38
CE
ST
36
TUNED
40
DATA
83
DVD A MUTE
34
MIC DETECT
23
B SHUT
90
A SHUT
89
A HALF
63
B HALF
91
CY–IN
10
S1
25
C–IN
CVBS IN
2
PB/CB
PR/CR
Y
4
3
2
MUTE1
3
MUTE2
13
Y–IN
6
Y OUT
CYOUT
CB OUT
CR OUT
21
S–DC OUT 27
CVBSOUT 23
C OUT 26
20
18
16
CB–IN
12
I/P
9
CR/B
CR–IN
14
REC MUTE
7
REC BIAS
20
TC REALY
21
CAMP CNT
18
B TRIG
19
A TRIG
17
SM INIT
12
SM NSP MUTING
9
SM SOFT MUTING
10
1
SELECT
SWITCH
Q261
MUTE CONTROL
Q301,302
MUTE
Q175
MUTE CONTROL
Q110,111
MUTE
Q166
MUTE
Q285
MIC2
LEVLE
RV1401
ECHO AMP
IC1400
ECHO LEVEL
RV1401
MIC AMP
IC1401
MIC1
LEVLE
DVD/CD MUTE
CONTROL
Q307,308
RV1401
REC/PB AMP,
SOUND CONTROL
IC101
SIGNAL SELECT
IC205
MUTE
Q235
MUTE
Q236
MUTE
Q238
MUTE
Q237
SELECT
SWITCH
Q260
DBFB
FEED BACK
Q101
FAN
DETECT
Q580,582
FAN
CONTROL
Q584
FAN
DRIVE
Q585
AM
J501
J501
TU901
ANTENNA
TV/SAT IN
L
R
J1402
J1402
J1400
AUDIO
MIC 1
J1450
MIC 2
VIDEO
VIDEO
INPUT
L
R
D
AUDIO
SECTION
G
AUDIO
SECTION
B
VIDEO
SECTION
C
VIDEO
SECTION
F
AUDIO
SECTION
SCORE
VOICE
A
VIDEO
SECTION
E
AUDIO
SECTION
R-CH
PB
HEAD
HP901
BIAS OSC
Q112
T101
R-CH
ERASE
HEAD
REC/PB
HEAD
R-CH
BIAS+9V
MUTE CONTROL
Q107–109
HRPE901
(DECK B)
(DECK A)
TAPE
MECHANISM
DECK
BLOCK
B SHUT
A SHUT
A HALF
B HALF
REC(REV)
CAP M+
REC(FWD)
B TRGM+
A TRGM+
B TRG CONTROL
Q118,119
CAP CONTROL
Q120,121
A TRG CONTROL
Q122,123
UNREG+12V
FAN901
FAN DET
75 OHM DRIVER
IC1801
C
J1902 (2/2)
S VIDEO
OUT
Y
J1902 (1/2)
VIDEO SELECTOR
IC1805
VIDEO
OUT
D–LIGHT
SYNC OUT
J506
SUB WOOFER
OUT
J503
J1900
COMPONENT
OUT
Q154,
155
Q113,114
SIGNAL IN/OUT CONTROL
IC403
SYSTEM
CONTROL
IC401 (3/4)
MUSIC L+R
AC/DC CONVERTER
IC2000 (2/2)
MIC
AC/DC CONVERTER
IC2000 (1/2)
DETECT
COMPARATOR
IC2001
LIMIT VOICE
COMPARATOR
IC2002
• Signal Path
: TUNER
: AUDIO
: PB (DECK A)
: PB (DECK B)
: REC (DECK B)
: VIDEO
: COMPONENT VIDEO
• R-CH is omitted due to same as L-CH.
7
SOFT MUTE
CONTROL
Q305,306,311
MUTE
Q263,264
JW261
GNZ77D
(Page 28)
(Page 28)
(Page 30)
(Page 30)
(Page 28)
(Page 30)
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HCD-GNZ77D/GNZ88D
HCD-GNZ77D/GNZ88D
6-4. BLOCK DIAGRAM — AUDIO SECTION —
41
4
2
7
9
43
3
SERIAL CLOCK
BUFFER
IC3
SYSTEM CONTROL
IC401(2/4)
E–3
OPEN SWITCH
SM LATCH3
79
SM LATCH2
76
SM LATCH1
77
SM CLK
78
SM DATA
65
SM RESET
72
SM SD
86
HP MUTE
85
HP DET
44 E–2
45 E–1
42 TABLE SENSE
48 LM–F
DBFB FEED BACK
FRONT L
R-CH
ADC RESET
SL OUT
R-CH
IC701
M751
(LOADING)
M741
(TABLE)
LOADING
MOTOR
DRIVE
4
2
IC712
TABLE
MOTOR
DRIVE
M
M
Q731
IC731
TABLE
ADDRESS
SENSOR
11
A/D CONVERTER
IC11
A/D CONVERTER
IC12
1
2
7
1
15
12
10
12
11
D/A CONVERTER
IC500
SUB WOOFER AMP
IC812
CLOSE OPEN
RE701
G
MAIN
SECTION
D
MAIN
SECTION
F
MAIN
SECTION
E
MAIN
SECTION
S751
OPEN/CLOSE
DETECT
DISC TRAY
ADDRESS
DETECT
L IN
R IN
31 DATA
R–CH
OUTL1
OUTL2
OUTR1
OUTR2
XFSOIN
XFSOOUT
HPOUTL1
HPOUTL2
HPOUTR1
HPOUTR2
NSPMUTE
SOFTMUTE
SCDT
SCSHIFT
SCLATCH
INIT
FSOCKO
29 LRCK
30 BCK
36 XFSIIN
2
R IN
SCKI
15 SCKI
PDWN
7
L IN
D OUT
LRCK
BCK
D OUT
10
LRCK
11
BCK
SW OUT
CENTER
1
12
2
15
7
49 LM–R
46 TM–F
47 TM–R
7
9
10
11
9
6
R–CH
4
18
D/A CONVERTER
IC700
36 XFSIIN
31 DATA
30 BCK
29 LRCK
NSPMUTE
SOFTMUTE
SCDT
SCSHIFT
19
21
22
23
SCLATCH
INIT
FSOI
XFSOIN
27
38
48
OUTL1 11
OUTL2 9
HPOUTR1 41
HPOUTR2 39
11
D/A CONVERTER
IC600
36 XFSIIN
R-CH
R-CH
31 DATA
30 BCK
29 LRCK
21 SCDT
14 XFSOOUT
19 SOFTMUTE
18 NSPMUTE
37 FSOCKO
22 SCSHIFT
27 INIT
48 XFSOIN
GNZ88D
GNZ88D
GNZ88D
SW OUT
INIT
NSP MUTE
SOFT MUTE
38 FSOI
23 SCLATCH
OUTL1
OUTL2
OUTR1
OUTR2
9
AMP (SURROUND)
IC630
AMP (CENTER)
IC730
33
4
PWM A
UNREG+8V
6
PWM B
OUT A
OUT B 30
OUT C 25
OUT D 22
/SD 3
RESET AB 5
RESET CD 15
/SD 4
/RESET 5
6
4
R-CH
R-CH
R-CH
R-CH
R-CH
FAN DET
R-CH
R-CH
AMP (FRONT LCH)
IC530
14 PWM B
6
PWM A
DC DETECT
Q850,851
OUT A
4
/SD
5
/RESET
R–CH
41
R–CH
39
45
43
14
48
18
19
21
22
23
27
37
FSOI 38
28
l
30
OUT B
25
l
27
OUT A
28
l
30
OUT B
25
l
27
HP AMP
IC880
IC803
6
PWM A
14 PWM B
GNZ77D
DC DETECT
Q860,861
DC DETECT
Q870,871
FRONT
SPEAKER
L
R
TM1500 (1/3)
SURROUND
SPEAKER
PHONES
J1401
L
R
CENTER
SPEAKER
MUTE
Q1400,1401
DC DETECT
Q840
SERIAL CLOCK
BUFFER
IC800
MUTE CONTROL
Q486
D486
TM1500 (2/3)
TM1500 (3/3)
X1
12.288MHz
X800
49MHz
PDWN
A/D CONVERTER
IC13
R IN
SCKI
L IN
D OUT
LRCK
BCK
PDWN
• Signal path
: AUDIO
: DIGITAL
(Page 29)
(Page 29)
(Page 29)
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Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
31
31
HCD-GNZ77D/GNZ88D
HCD-GNZ77D/GNZ88D
6-5. BLOCK DIAGRAM — FUNCTION/POWER SECTION —
57
58
FL DRIVER CLK
FL DRIVER DATA
FL DRIVER CS
FL DRIVER RESET
DR5
I
DR11
DR12
I
DR14
DR16
I
DR35
60
59
SI
SCK
CSB
RSTB
49
48
51
52
SYSTEM CONTROL
IC401 (4/4)
D1304
(STANDBY)
D1307–1312
SIRCS
4
VIN
POWER CONTROL
IC1100
C
VCC
FB
Z/C
FUNCTION
KEY
S1309–1316
REMOTE CONTROL
SIGNAL
RECEIVER
IC1301
97
S1317,1319,1324–1327
95
S1306,1318,1320–1323,1328,1331
94
56
12
STBY LED
53 LED CTRL
RESET
20 AC CUT
AD KEY3
AD KEY2
AD KEY1
XC IN
XC OUT
X IN
X OUT
51
50 LED ILLUMINATION 1
LED ILLUMINATION 2
LED ILLUMINATION 3
52
LED
ILLUMINATION
CONTROL
Q1305–1307
X401
32.768kHz
X402
5MHz
11
10
13
MTK POWER 35
MAIN ON/OFF 100
15
LED ON/OFF
CONTROL
Q1308,1310
FL DRIVE
IC1300
FUNCTION
KEY
FUNCTION
KEY
FUNCTION
KEY
S1300
73
S1301
74
S1305
54 VOL A
POWER KEY
DISPLAY KEY
FUNCTION
KEY
ROTARY
ENCODER
55 VOL B
LED POWER
CONTROL
Q1303,1304
VP
F1
F2
DVD SW+9V
REG
IC1802
DVD SW+3.3V
REG
IC1803
DVD SW+5V
REG
IC1804
POWER
CONTROL
Q132,133
RESET
SWITCH
Q213
RESET
IC402
DVD
SW+9V
AUDIO+9V
REG
IC552
M+9V/LED+9V
REG
IC551
+12V REG
IC1102
RECT
D1114
ST A+9V
M+9V
UNREG+12V
+31V
120V
SW1100
EQ
Q1300
AUDIO A+9V
D+3.3V
D+4V
DVD+3.3V
RF+1.8V
RF+3.3V
UNREG+8V
A+5V
A+8.4V
A+5V
EVER+4V
D215
D216
AC IN
D1300
D1102
D1101
D1119
D1110
D1112
D1120
T1100
MAIN
TRANSFORMER
T1300
DC/DC
CONVERTER
TRANSFORMER
D1302
D1301
D594
A+5V REG
Q131
D1303
BIAS +9V
+3.3V
EVER+4V
FL+4V
FL+3.3V
D+3.3V
D393
D396
D395
D1314
D394
D506
F1110
FEED BACK
PC1100
STANDBY
CONTROL
PC1101
STANDBY
CONTROL
PC1102
STANDBY
CONTROL
Q1102
STANDBY
CONTROL
Q1200
FEED BACK
PC1200
POWER DETECT
IC1201
220
l
240V
VOLTAGE
SELECTER
+4V SWITCH
Q1203,1204
+8V SWITCH
Q1205,1206
FILTER
LF1101
A+5V REG
IC1
D+4V
REG
IC562
7
I
13
•
15
I
17
•
19
I
38
DR0
I
DR4
•
DR15
2
I
6
•
18
FL1300
VACUUM
FLUORESCENT
DISPLAYS
D+3.3V
+1.8V
RECT
D1212
POWER DETECT
IC1101
POWER CONTROL
Q1100,1101
RF+1.8V REG
IC106
+3.3V
+3.3V REG
IC105
DVD SW+5V
RF+3.3V REG
IC107
RECT
D1213
RECT
D1100
MTK POWER
CONTROL
Q1970,1971
FL DRIVE
CONTROL
Q1311–1316
6
7
4
3
1
D
POWER CONTROL
IC1200
VCC
FB
Z/C
5
4
2
1
GNZ88D:EXCEPT TH
T1200
SUB
TRANSFORMER
D+3.3V REG
IC2
+1.8V REG
IC810
D1211
D1201
D1208
D1207
• Abbreviation
E2 : 120 V AC area in E model
E3 : 240 V AC area in E model
E12 : 220–240 V AC area in E model
E13 : 220–230 V AC area in E model
E15 : Iran model
EA : Saudi arabia model
PH : Philippine model
SP : Singapore model
TH : Thai model
GNZ88D
GNZ77D: POWER UNIT
GNZ88D
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
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
32
32
HCD-GNZ77D/GNZ88D
HCD-GNZ77D/GNZ88D
• Note For Printed Wiring Boards And Schematic Diagrams
Note on Printed Wiring Board:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
•
: Pattern from the side which enables seeing.
(The other layer’s patterns are not indicated.)
Caution:
Pattern face side:
Parts on the pattern face side seen from
(Conductor Side)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Component Side)
the parts face are indicated.
• Indication of transistor.
• A : B+ Line.
• B : B– Line.
• Voltage and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
∗
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: AUDIO
f
: TUNER
L
: VIDEO (COMPONENT)
g : VIDEO (COMPOSITE)
E
: TAPE PLAY (DECK A)
d
: TAPE PLAY (DECK B)
G
: TAPE REC (DECK B)
J
: DVD (AUDIO)
c
: DVD (RF)
I : DVD (DIGITAL)
• Abbreviation
E2
: 120 V AC area in E model
E3
: 240 V AC area in E model
E12
: 220-240 V AC area in E model
E13
: 220-230 V AC area in E model
E15
: Iran model
EA
: Saudi arabia model
PH
: Philippine model
SP
: Singapore model
TH
: Thai model
Note: The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40 °C higher than
ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to about
350 °C.
Caution: The printed pattern (copper foil) may peel away if the
heated tip is applied for too long, so be careful!
• Strong viscosity
Unleaded solder is more viscou-s (sticky, less prone to flow) than
ordinary solder so use caution not to let solder bridges occur such
as on IC pins, etc.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may also
be added to ordinary solder.
6-6. CIRCUIT BOARDS LOCATION
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
Q
B
These are omitted.
C
E
Q
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and 1/4 W or less unless otherwise
specified.
• 2 : nonflammable resistor.
• C : panel designation.
MIC board
PANEL board
KARAOKE board
VOLUME board
IR board
DRIVER board
ADC board
S-MASTER board
SPEAKER board
MAIN board
SW board
DMB15 board
MOTOR (LD) board
MOTOR (TB) board
SENSOR board
POWER UNIT
VIDEO board
MIC board
PANEL board
KARAOKE board
VOLUME board
IR board
DRIVER board
ADC board
S-MASTER board
SPEAKER board
MAIN board
SW board
DMB15 board
MOTOR (LD) board
MOTOR (TB) board
SENSOR board
POWER board
VIDEO board
HCD-GNZ77D
HCD-GNZ88D
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
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
33
33
HCD-GNZ77D/GNZ88D
HCD-GNZ77D/GNZ88D
• Waveforms
— DMB15 BOARD —
— S-MASTER BOARD —
— MAIN BOARD —
— ADC BOARD —
1 IC102 6 (DVDRFIP)
0.5 Vp-p
200 mV/DIV, 100 nsec/DIV
500 mV/DIV, 20 µsec/DIV
2 IC102 ea (FED)
100 mV/DIV, 1 msec/DIV
6 IC102
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