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Model
HCD-WZ88D MHC-WZ88D
Pages
70
Size
9.39 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
hcd-wz88d-mhc-wz88d.pdf
Date

Sony HCD-WZ88D / MHC-WZ88D Service Manual ▷ View online

17
HCD-WZ88D
[COLD RESET]
• The cold reset reset 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, [CD SYNC] 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 set 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, [REC PAUSE/START] button and
[SOUND FIELD] button 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 Arabian
and Russian models.
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  x  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 reset all data including preset data stored in
the RAM to initial conditions during next time you plug in
power supply. 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, [DVD] button and  ?/1  button simultaneously.
The system will power off automatically.
4. After the “STANDBY” blinking display finishes, the 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  A  button is pressed.
The message “LOCKED” 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  A  button simultaneously and hold down
until the message “LOCKED” or “UNLOCKED” appears on
the fluorescent indicator tube (around 5 seconds).
[DVD COLOR SYSTEM SWITCHING]
• 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 to turn off the system.
4. Press  X  button and  ?/1  button simultaneously. The system
will power on automatically.
The message “COLOR PAL” or “COLOR NTSC” appears on
the fluorescent indicator tube.
[VIDEO/SAT SWITCHING]
• This mode let you switch from VIDEO to SAT and vice-versa.
Procedure:
1. Press  ?/1  button to turn on the system.
2. Select VIDEO function.
3. Press [VIDEO/SAT] button and  ?/1  button simultaneously.
The function will change to SAT. Press the same buttons again
to change from SAT to VIDEO.
[REMOTE COMMANDER 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.  Use
this mode during aging to avoid disturbance. 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, [REC PAUSE/START] button and
[PROGRESSIVE/DIRECTION] button simultaneously. The
message “SIRCS OFF” appears on the fluorescent indicator
tube.
To release from this mode
Press the same buttons again.  The message “SIRCS ON” appears
on the fluorescent indicator tube.
[AUTO TUNING  MODE]
• This mode let you tuned in any radio station automatically
without using the remote commander.
Procedure:
1. Press  ?/1  button to turn on the system.
2. Press [TUNER/BAND] button repeatedly to select the “FM” or
“AM”.
3. Press  x  button and [TUNER/BAND] button simultaneously
and hold down until the “AUTO” lights up in the fluorescent
indicator tube and the frequency indication starts to change.
(around 3 seconds). Scanning stops automatically when a
station is tuned in.
18
HCD-WZ88D
[SELECTOR MUTE RELEASE MODE]
• This mode let you output the audio signal during function other
than DVD function when the DVD decoder has been
disconnected. This system cannot output the audio signal in
the normal condition if the DVD decoder is disconnected.
Procedure:
1. Press  ?/1  button to turn on the system.
2. Press  x  button, [REC PAUSE/START] button and
[VIDEO/SAT] button simultaneously. The message “SEL
MUTE OFF” appears on the fluorescent indicator tube.
3. Insert a microphone into the microphone jack. The audio signal
is outputted.
To release from this mode
Press  ?/1  button to turn off the system.
[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.
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  A  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.
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 mirror time adjustment, 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 “R”  button on
the remote commander. The following screen appears on the
on-screen display.
2. Select “3. Manual Adjustment” by pressing the  3 “R”  button
on the remote commander. The following screen appears on
the on-screen display.
3. Select “6. Iop:” by pressing  6 “R”  button on the remote
commander.
4. Wait until a hexadecimal number appear in the on-screen
display as below:
5. Convert data from hexadecimal to decimal by using conversion
table.
6. Press  RETURN “R”  button on the remote commander to
return to previous menu.
7. Press   0 “R”  button on the remote commander to return to the
Top Menu of  Remocon Diagnosis Menu.
8. 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 “R”  button on the
remote commander. The following screen appears on the on-
screen display.
Remocon Diagnosis Menu
0.  External Chip Check
1.  Servo Parameter Check
2.  Drive Manual Operation
3.  Emergency History
4.  Version information 
5.  Video Level Adjustment
Model Name : WDZ5D-GA
IF-con
: Ver. 01.00 (0000)
Syscon
: Ver. 1.311
Drive Manual Operation
1.    Servo Control
2.  Track/Layer Jump
3.  Manual Adjustment
4.  Tray Aging Mode
5.  MIRR time adjust
0.  Return to top 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:
7.  TRV. Level:
8.  S curve(FE) Level:
9.  RFL(PI) Level:
0.  MIRR Time:
  X x
    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:
  X x
    Change Value
RETURN
    Return to previous menu
Emg. History Check
Laser Hours
CD
999h
59min
DVD
999h
59min
1.   01 05 04 04
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
0
    Return to Top Menu
19
HCD-WZ88D
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  .  “R”  or  .  “R”  on the
remote commander.  The error code consists of
(a) Error Code
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
(b) Parameter of error code
      This is the detail of error code.
(c) Time of error code
     This is the laser time when an error occurred.
To clear the Laser Hour
Press  
 DISPLAY “R” button and then press  CLEAR “R” button.
The data for both CD and DVD data are reset.
To clear the Emergency History
Press  MENU “R”  button and then press  CLEAR “R”  button. The
error code for all emergency history would be reset.
To return to the Top Menu of  Remocon Diagnosis Menu
Press  0 “R”  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 “R”  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 “R”  on the remote commander.
Example of Error code
1.   01 05 04 04
00 92 46 00
   
00 00 00 00
00 00 23 45
Example of Error code
1.   01 05 04 04
00 92 46 00
   
00 00 00 00
00 00 23 45
Example of Error code
1.   01 05 04 04
00 92 46 00
   
00 00 00 00
00 00 23 45
Emg. History Check
Laser Hours
CD
0h
0min
DVD
0h
0min
1.   01 05 04 04
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
0
    Return to Top Menu
Emg. History Check
Laser Hours
CD
999h
59min
DVD
999h
59min
1.   00 00 00 00
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
0
    Return to Top Menu
Version information
Firm (Main) : Ver. xxxxx
Firm (Sub) : xxxxx
RISC : xxxxx
8032 : xxxxx
Audio DSP : xxxxx
Servo DSP : xxxxx
0
    Return to Top Menu
20
HCD-WZ88D
SECTION 5
DIAGRAMS
For Schematic Diagrams.
Note:
• All capacitors are in 
µ
F unless otherwise noted.  (p: pF)
50 WV or less are not indicated except for electrolytics and
tantalums.
• All resistors are in 
  and 
1
/
4
 
W or less unless otherwise
specified.
f
: internal component.
2
: nonflammable resistor.
5
: fusible resistor.
C
: panel designation.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
A
: B+ Line.
B
: B– Line.
H
: adjusment for repair.
• Power voltage is fed with DXA-WZ88D from external con-
nector (SYSTEM CONTROL 1, 2).
• Voltages and waveforms are dc with respect to ground un-
der no-signal (detuned) conditions.
• Voltages are taken with VOM (Input impedance 10 M
).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
no mark : DVD STOP
• Circled numbers refer to waveforms.
• Signal path.
F
: AUDIO
f
: AUDIO IN
L
: VIDEO
j
: PB (TAPE)
k
: REC (TAPE)
J
: CD PLAY
c
: DVD PLAY
I
: SACD PLAY
d
: TUNER
E
: Y
a
: CHROMA
r
: COMPONENT VIDEO
N
: MIC
• Abbreviation
AR
: Argentine model.
AUS
: Australian 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
: 220-240 V AC area in E model.
E51
: Chilean and peruvian models.
EA
: Saudi Arabia model.
PL
: Phillippines model.
SP
: Singapore and Malaysia models.
TH
: Thai model.
For Printed Wiring Boards.
Note:
X
: parts extracted from the component side.
Y
: parts extracted from the conductor side.
: Pattern from the side which enables seeing.
• Indication of transistor.
C
B
These are omitted.
E
Q
Note: The components identified by mark 
0
 or dotted
line with mark 
0
 are critical for safety.
Replace only with part number specified.
Caution:
Pattern face side:  Parts on the pattern face side seen from
(SIDE B)               the pattern face are indicated.
Parts face side:     Parts on the parts face side seen from
(SIDE A)               the parts face are indicated.
B
These are omitted.
C
Q
E
B
These are omitted.
C
E
Q
IC103 (EEP ROM) can not be replaced individually.
Replace it with DMB10 board assembly for service
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