DOWNLOAD Sony HCD-DZ7T Service Manual ↓ Size: 6.69 MB | Pages: 102 in PDF or view online for FREE

Model
HCD-DZ7T
Pages
102
Size
6.69 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
hcd-dz7t.pdf
Date

Sony HCD-DZ7T Service Manual ▷ View online

3
HCD-DZ7T
When the self-diagnosis function is activated to 
prevent the system from malfunctioning, a 5-
character service number (e.g., C 13 50) with a 
combination of a letter and 4 digits appears on 
the screen and the front panel display. In this 
case, check the following table.
Self-diagnosis Function 
(When letters/numbers appear in the 
display)
First 3 
characters of 
the service 
number
Cause and/or corrective action
C 13
The disc is dirty.
,Clean the disc with a soft cloth 
C 31
The disc is not inserted correctly.
,Restart the system, then re-insert 
the disc correctly.
E XX
(xx is a number)
To prevent a malfunction, the 
system has performed the self-
diagnosis function.
,Contact your nearest Sony 
dealer or local authorized Sony 
service facility and give the 5-
character service number.
Example: E 61 10
C:13:50
When displaying the version 
number on the TV screen
When you turn on the system, the version 
number [VER.X.XX] (X is a number) may 
appear on the TV screen. Although this is not a 
malfunction and for Sony service use only, 
normal system operation will not be possible. 
Turn off the system, and then turn on the system 
again to operate.
VER.X.XX
4
HCD-DZ7T
TABLE OF CONTENTS
1.
SERVICING NOTE
...................................................
5
2.
GENERAL
................................................................... 11
3.
DISASSEMBLY
3-1.
Disassembly Flow ........................................................... 14
3-2.
Case (DS), Front Panel Assy ........................................... 15
3-3.
FL Board .......................................................................... 16
3-4.
JACK Board, P-SW Board .............................................. 17
3-5.
Front Panel, Ornament .................................................... 17
3-6.
Tuner (FM/AM) ............................................................... 18
3-7.
POWER Board ................................................................ 18
3-8.
IO-S-OUT Board ............................................................. 19
3-9.
SP Board, D.C. Fan ......................................................... 19
3-10. MAIN Board, DSP Board ............................................... 20
3-11. DVD Mechanism Deck (CDM85-DVBU102) ................ 21
3-12. Tray .................................................................................. 21
3-13. Belt, MS-203 Board ........................................................ 22
3-14. Optical Pick-up (KHM-313CAA) ................................... 23
4.
TEST MODE
............................................................... 24
5.
ELECTRICAL ADJUSTMENT
............................. 29
6.
DIAGRAMS
6-1.
Block Diagram  – RF/VIDEO Section – ......................... 32
6-2.
Block Diagram  – AMP Section – ................................... 33
6-3.
Block Diagram  – AUDIO Section – ............................... 34
6-4.
Block Diagram  – POWER Section – .............................. 35
6-5.
Printed Wiring Board  – MAIN Board (Side A) – ........... 36
6-6.
Printed Wiring Board  – MAIN Board (Side B) – ........... 37
6-7.
Schematic Diagram  – MAIN Board (1/10) – ................. 38
6-8.
Schematic Diagram  – MAIN Board (2/10) – ................. 39
6-9.
Schematic Diagram  – MAIN Board (3/10) – ................. 40
6-10. Schematic Diagram  – MAIN Board (4/10) – ................. 41
6-11. Schematic Diagram  – MAIN Board (5/10) – ................. 42
6-12. Schematic Diagram  – MAIN Board (6/10) – ................. 43
6-13. Schematic Diagram  – MAIN Board (7/10) – ................. 44
6-14. Schematic Diagram  – MAIN Board (8/10) – ................. 45
6-15. Schematic Diagram  – MAIN Board (9/10) – ................. 46
6-16. Schematic Diagram  – MAIN Board (10/10) – ............... 47
6-17. Printed Wiring Board  – IO-S-OUT Board – .................. 48
6-18. Schematic Diagram  – IO-S-OUT Board (1/2) – ............ 49
6-19. Schematic Diagram  – IO-S-OUT Board (2/2) – ............ 50
6-20. Printed Wiring Board  – DSP Board – ............................ 51
6-21. Schematic Diagram  – DSP Board – ............................... 52
6-22. Printed Wiring Boards  – FL, JACK Board – .................. 53
6-23. Schematic Diagram  – FL Board – .................................. 54
6-24. Schematic Diagram  – JACK Board – ............................. 55
6-25. Printed Wiring Boards  – SP Board, P-SW Board – ....... 56
6-26. Schematic Diagram  – SP Board, P-SW Board – ............ 56
6-27. Printed Wiring Board  – MS-203 Board – ....................... 57
6-28. Schematic Diagram  – MS-203 Board – ......................... 57
6-29. Printed Wiring Board  – POWER Board – ...................... 58
6-30. Schematic Diagram  – POWER Board – ......................... 59
7.
EXPLODED VIEWS
7-1.
Overall Section ................................................................ 79
7-2.
Front Panel Section ......................................................... 80
7-3.
Chassis Section ................................................................ 81
7-4.
DVD Mechanism Deck Section (CDM85-DVBU102) ... 82
8.
ELECTRICAL PARTS LIST
.................................. 83
5
HCD-DZ7T
SECTION  1
SERVICING  NOTE
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
DISC TRAY  LOCK
The disc tray lock function for the antitheft of an demonstration
disc in the store is equipped.
Setting Procedure :
1. Press the  ?/1  button to turn the set on.
2. Press the [FUNCTION] button to set DVD function.
3. Insert a disc.
4. Press the  
x  
button and the  
 button simultaneously for five
seconds.
5. The message “LOCKED” is displayed and the tray is locked.
Releasing Procedure :
1. Press the  
x  
button and the  
 button simultaneously for five
seconds again.
2. The message “UNLOCKED” is displayed and the tray is
unlocked.
Note:
When “LOCKED” is displayed, the tray lock is not released by turning
power on/off with the  ?/1  button.
On cleaning discs, disc/lens cleaners
Do not use cleaning discs or disc/lens cleaners
(including wet or spray types). These may cause the apparatus
to malfunction.
IMPORTANT NOTICE
Caution: This system is capable of holding a still video image or
on-screen display image on your television screen indefinitely.
If you leave the still video image or on-screen display image
displayed on your TV for an extended period of time you risk
permanent damage to your television screen.
Projection televisions are especially susceptible to this.
Attention when transported
Use this mode when returning the set to the customer after repair.
Procedure:
1. Press the  
?/1 
 button to turn the set on.
2. Press the [FUNCTION] button to set the function “DVD”.
3. Remove all discs, and then press two buttons  
H
  and  
?/1
simultaneously.
4. After a message “MECHA LOCK” is displayed on the
fluorescent indicator tube, pull out the AC plug.
5. To exit from this mode, press the  
?/1
  button to turn the set
on.
Note about CDs/DVDs
The system can play CD-ROMs/CD-Rs/CD-RWs recorded in the
following formats:
– audio CD format
– VIDEO CD format
– MP3 audio tracks, JPEG image files, and DivX video files of
format conforming to ISO 9660 Level 1/Level 2, or its extended
format, Joliet
The system can play DVD-ROMs/DVD+RWs/DVD-RWs/
DVD+Rs/DVD-Rs recorded in the following formats:
– MP3 audio tracks, JPEG image files, and DivX video files of
format conforming to UDF (Universal Disc Format)
Example of discs that the system cannot play
The system cannot play the following discs:
CD-ROMs/CD-Rs/CD-RWs other than those recorded in the
formats listed on “Note about CDs/DVDs”
CD-ROMs recorded in PHOTO CD format
Data part of CD-Extras
DVD Audios
Super Audio CD
DATA DVDs that do not contain MP3 audio tracks, JPEG
image files, or DivX video files
DVD-RAMs
Also, the system cannot play the following discs:
A DVD VIDEO with a different region code
A disc that has a non-standard shape (e.g., card, heart)
A disc with paper or stickers on it
A disc that has the adhesive of cellophane tape or a sticker
still left on it
“DVD-RW,” “DVD+RW,” “DVD+R,”
“DVD VIDEO,” and the “CD” logos are trademarks.
Format of 
discs
Disc logo
DVD VIDEO
DVD-RW/
DVD-R
DVD+RW/
DVD+R
VIDEO CD 
(Ver. 1.1 and 
2.0 discs)/
Audio CD
CD-RW/CD-R 
(audio data) 
(MP3 files) 
(JPEG files)
This System Can Play the 
Following Discs
6
HCD-DZ7T
Copyrights
This product incorporates copyright protection technology that is
protected by U.S. patents and other intellectual property rights. Use
of this copyright protection technology must be authorized by
Macrovision, and is intended for home and other limited viewing
uses only unless otherwise authorized by Macrovision. Reverse
engineering or disassembly is prohibited.
This system incorporates with Dolby* Digital and Dolby Pro Logic
(II) adaptive matrix surround decoder and the DTS** Digital
Surround System.
*
Manufactured under license from Dolby Laboratories.
“Dolby”, “Pro Logic”, and the double-D symbol are
trademarks of Dolby Laboratories.
** Manufactured under license from DTS, Inc.
“DTS” and “DTS Digital Surround” are registered trademarks
of DTS, Inc.
Notes about CD-R/CD-RW/DVD-R/DVD-RW/DVD+R/
DVD+RW
In some cases, CD-R/CD-RW/DVD-R/DVD-RW/DVD+R/
DVD+RW cannot be played on this system due to the recording
quality or physical condition of the disc, or the characteristics of
the recording device and authoring software.
The disc will not play if it has not been correctly finalized. For
more information, see the operating instructions for the recording
device.
Note that some playback functions may not work with some
DVD+RWs/DVD+Rs, even if they have been correctly finalized. In
this case, view the disc by normal playback. Also some DATA CDs/
DATA DVDs created in Packet Write format cannot be played.
Peel off the seal and so the lever is moved 
in the direction of the arrow with the thin rod. 
How to open the disc table when power switch turns off 
Insert a tapering driver into the aperture of the unit bottom, and slide it in the direction of the arrow.
seal
disc tray
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Sony HCD-DZ7T Service Manual ▷ Download

  • DOWNLOAD Sony HCD-DZ7T Service Manual ↓ Size: 6.69 MB | Pages: 102 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sony HCD-DZ7T in PDF for free, which will help you to disassemble, recover, fix and repair Sony HCD-DZ7T Audio. Information contained in Sony HCD-DZ7T Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.