Sony HCD-GZR888DA / HCD-GZR999DA Service Manual ▷ View online
HCD-GZR888DA/GZR999DA
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.
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
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.
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
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
procedure.
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.
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
To return to the Top Menu of Remocon Diagnosis Menu, press
the [0] button on the remote commander.
the [0] button on the remote commander.
HCD-GZR888DA/GZR999DA
26
SECTION 4
MECHANICAL ADJUSTMENTS
Except E2, E51, 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
head pinch
roller
erase
head
rubber
belts
capstan
idler
2. Demagnetize the record/playback head with a head demagne-
tizer.
3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to the
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 to 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 to 0.08 oz • inch)
FF/REW
CQ-201B
6.96 N • m to 14.02 N • m
71 to 143 g • cm
(0.98 to 1.99 oz • inch)
FWD tension
CQ-403A
9.80 N • m
100 g or more
(3.53 oz or more)
• Abbreviation
E2
E2
: 120V AC area in E model
E51
: Chilean and Peruvian models
MX
: Mexican model
HCD-GZR888DA/GZR999DA
27
SECTION 5
ELECTRICAL ADJUSTMENTS
DVD SECTION
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 (Part
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 (Double Layer)
NTSC : HLX-501 (Part
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:
+
–
–
CN105 pin 6 (RFMON)
CN105 pin 3 (GND)
oscilloscope
DMB19 board
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 and
3. Set the test disc (refer to the TEST DISC LIST) on the tray and
press the [
N
] button to playback.
4. Confi rm that oscilloscope waveform is clear and check RF-
MON 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.
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)
Checking Location: DMB19 board (Side A)
CN105 pin 3
(GND)
(GND)
CN105 pin 6
(RFMON)
(RFMON)
– DMB19 BOARD (SIDE A) –
IC104
CN105
CN1104
IC101
CN1
103
TUNER SECTION
FM Tune Level Check
set
signal
generator
Procedure:
1. Turn on the set.
2. Input the following signal from signal generator to FM antenna
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
Modulation : 1 kHz
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 signals.
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.
HCD-GZR888DA/GZR999DA
28
screw
position
L-CH
peak
within
1 dB
output
level
L-CH
peak
R-CH
peak
within
1 dB
screw
position
R-CH
peak
DECK SECTION
VIDEO SECTION
0 dB = 0.775V
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.
oscilloscope
set
J1502
VIDEO OUT
VIDEO OUT
75
:
+
–
–
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.
1.00 ± 0.07 Vp-p
(WHITE 100%)
Except E2, E51, MX Model:
1. Demagnetize the record/playback head with a head demagne-
1. Demagnetize the record/playback head with a head demagne-
tizer.
2. Do not use a magnetized screwdriver for the adjustments.
3. After the adjustments, apply suitable locking compound to the
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 ad-
justment.)
should be completed before performing recording circuit ad-
justment.)
6. The adjustments should be performed for both L-CH and
R-CH.
7. Switches and controls should be set as follows unless other-
wise specifi ed.
• Test
Tape
Tape
Signal
Used for
P-4-A063
6.3 kHz, –10 dB
Azimuth Adjustment
Record/Playback Head Azimuth Adjustment
Procedure:
1. Mode: Playback
Procedure:
1. Mode: Playback
+
–
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)
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.
so that outputs match within 1dB of peak.
• Abbreviation
E2
E2
: 120V AC area in E model
E51
: Chilean and Peruvian models
MX
: Mexican model
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