Sony HCD-GZR88D / HCD-GZR99D / MHC-GZR88D / MHC-GZR99D Service Manual ▷ View online
HCD-GZR88D/GZR99D
25
To clear the Emergency History
Press the [DVD TOP MENU] button and then press the
[CLEAR] button.
The error code for all emergency history would be reset.
Press the [DVD TOP MENU] button and then press the
[CLEAR] button.
The error code for all emergency history would be reset.
To clear the Initialize Setup Data
Press the [DVD/TUNER MENU] button and then press the
[CLEAR] button on the remote commander.
Press the [DVD/TUNER MENU] button and then press the
[CLEAR] button on the remote commander.
To return to the Top Menu of Remocon Diagnosis Menu
Press the [0] button on the remote commander.
Press the [0] button on the remote commander.
• Check Version Information
To check the version information, please follow the following
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.
commander. The following screen appears on the on-screen
display.
To return to the Top Menu of Remocon Diagnosis Menu,
press the [0] button on the remote commander.
press the [0] button on the remote commander.
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
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
Version information
O Return to Top Menu
Firm (Main) : Ver. xxxxx
Firm (Sub) : xxxxx
RISC : xxxxx
8032 : xxxxx
Audio DSP : xxxxx
Servo DSP : xxxxx
Firm (Sub) : xxxxx
RISC : xxxxx
8032 : xxxxx
Audio DSP : xxxxx
Servo DSP : xxxxx
HCD-GZR88D/GZR99D
26
SECTION 4
MECHANICAL ADJUSTMENTS
Except HCD-GZR99D: E2, E51, AR, MX Model:
Precaution
1. Clean the following parts with a denatured alcohol-moistened
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
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
Mode
Torque meter
Meter reading
FWD
CQ-102C
3.06 N • m to 6.96 N • m
31 to 71 g • cm
(0.43 – 0.98 oz • inch)
FWD
back tension
back tension
CQ-102C
0.19 N • m to 0.58 N • m
2 to 6 g • cm
(0.02 – 0.08 oz • inch)
REV
CQ-102RC
3.06 N • m to 6.96 N • m
31 to 71 g • cm
(0.43 – 0.98 oz • inch)
REV
back tension
back tension
CQ-102RC
0.19 N • m to 0.58 N • m
2 to 6 g • cm
(0.02 – 0.08 oz • inch)
FF/REW
CQ-201B
6.96 N • m to 14.02 N • m
71 to 143 g • cm
(0.98 – 1.99 oz • inch)
FWD tension
CQ-403A
9.80 N • m
100 g or more
(3.53 oz or more)
REV tension
CQ-403R
9.80 N • m
100 g or more
(3.53 oz or more)
HCD-GZR88D/GZR99D
27
Checking Location: DMB19 board (Side A)
SECTION 5
ELECTRICAL ADJUSTMENTS
When the optical pick-up assy is replaced, perform the “Execute
IOP Measurement”.
IOP Measurement”.
Execute IOP Measurement (See page 23)
[TEST DISC LIST]
Be sure to use the DVD disc that matches the signal standards of
your region.
• CD
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
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
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:
Connection:
Procedure:
1. Connect an oscilloscope to CN105 pin 6 (RFMON) and
1. Connect an oscilloscope to CN105 pin 6 (RFMON) and
CN105 pin 3 (GND) on the DMB19 board.
2. Turn the power on.
3. Set the test disc (refer to the TEST DISC LIST) on the tray
3. Set the test disc (refer to the TEST DISC LIST) on the tray
and press the [
B
] button
(HCD-GZR99D: E2, E51, AR, MX model)
or
[
Y
] button
(Except HCD-GZR99D: E2, E51, AR, MX model)
to
playback.
4. Confi rm 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.
waveform.
FM Tune Level Check
Procedure:
1. Turn on the set.
2. Input the following signal from signal generator to FM
1. Turn on the set.
2. Input the following signal from signal generator to FM
antenna input directly.
Carrier frequency: A = 87.5 MHz, B = 98 MHz, C = 108 MHz
Deviation
: 75 kHz
Modulation : 1 kHz
ANT input : 35 dB
ANT input : 35 dB
μ (EMF)
Note: Use 75 ohm coaxial cable to connect signal generator and
the set.
You cannot use video cable for checking.
Use signal generator whose output impedance is 75 ohm.
3. Set to FM tuner function and tune A, B and C signals.
4. Confi rm “TUNED” is lit on the display for A, B and C
4. Confi rm “TUNED” is lit on the display for A, B and C
signals.
When the selected station signal is received in good condition,
“TUNED” is displayed.
“TUNED” is displayed.
DVD SECTION
TUNER SECTION
+
–
–
CN105 pin 6 (RFMON)
CN105 pin 3 (GND)
oscilloscope
DMB19 board
RFMON signal waveform
VOLT/DIV: 200 mV
TIME/DIV: 500 nS
TIME/DIV: 500 nS
level: 0.58 ± 1.23 Vp-p (DVD)
0.57 ± 1.1 Vp-p (CD)
0.57 ± 1.1 Vp-p (CD)
CN105 pin 3
(GND)
(GND)
CN105 pin 6
(RFMON)
(RFMON)
– DMB19 BOARD (SIDE A) –
IC104
CN105
CN1104
IC101
CN1
103
set
signal
generator
HCD-GZR88D/GZR99D
28
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.
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 OUT jack.
2. Load a DVD reference disc playback.
3. Check the video signal level is 1.00±0.07Vp-p.
1. Connect oscilloscope to VIDEO OUT jack.
2. Load a DVD reference disc playback.
3. Check the video signal level is 1.00±0.07Vp-p.
VIDEO SECTION
Except HCD-GZR99D: E2, E51, AR, MX Model:
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
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.)
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
R-CH.
7. Switches and controls should be set as follows unless
otherwise specifi ed.
• Test Tape
Tape
Signal
Used for
P-4-A063
6.3 kHz, –10 dB
Azimuth Adjustment
Record/Playback Head Azimuth Adjustment
DECK B
Note: Perform this adjustments for both decks
Procedure:
1. Mode: Playback
Procedure:
1. Mode: Playback
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
so that outputs match within 1dB of peak.
DECK SECTION
0 dB = 0.775V
oscilloscope
set
J1502
VIDEO OUT
VIDEO OUT
75 ȍ
+
–
–
1.00 ± 0.07 Vp-p
(WHITE 100%)
+
–
level meter
test tape
P-4-A063
(6.3 kHz, –10 dB)
P-4-A063
(6.3 kHz, –10 dB)
MAIN board
IC101
pin wh (L-CH)
pin ql (R-CH)
IC101
pin wh (L-CH)
pin ql (R-CH)
MAIN board
IC101
pin t; (GND)
IC101
pin t; (GND)
screw
position
L-CH
peak
within
1 dB
output
level
L-CH
peak
R-CH
peak
within
1 dB
screw
position
R-CH
peak
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