HCD-DZ7T — Sony Audio Service Manual (repair manual)

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

View Sony HCD-DZ7T Service Manual online

SERVICE MANUAL
Sony Corporation
Home Audio Division
Published by Sony Techno Create Corporation
E Model
DVD RECEIVER
9-887-704-02
2007F16-1
© 2007.06
Ver. 1.1  2007.06
HCD-DZ7T
HCD-DZ7T is the amplifier, DVD/CD
and tuner section in DAV-DZ7T.
SPECIFICATIONS
Model Name Using Similar Mechanism
HCD-DZ150K
Mechanism Type
CDM85-DVBU102
Optical Pick-up Name
KHM-313CAA
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.
— Continued on next page —
Amplifier section
Stereo mode (rated)
108 W + 108 W (at 3 ohms,
1 kHz, 1 % THD)
Surround mode (reference)  RMS output power
FL/FR/SL/SR*: 143 watts 
(per channel at 3 ohms, 1 
kHz, 10 % THD)
C*: 142 watts (at 3 ohms, 1 
kHz, 10 % THD)
Subwoofer L/Subwoofer 
R*: 143 watts (per channel 
at 3 ohms, 80 Hz, 10 % 
THD)
* Depending on the sound field settings and the source, 
there may be no sound output.
Inputs (Analog)
TV (AUDIO IN)
Sensitivity: 450/250 mV
SAT/CABLE (AUDIO IN)Sensitivity: 450/250 mV
AUDIO IN/MIC 1
Sensitivity:
AUDIO IN 250/125 mV/
MIC 1  1 mV
MIC 2
Sensitivity: 1 mV
Inputs (Digital)
SAT/CABLE (COAXIAL IN/OPTICAL IN)
Impedance: 75 ohms/–
DVD system
Laser
 Semiconductor 
laser
(DVD: 
λ = 650 nm)
(CD: 
λ = 790 nm)
Emission duration: 
continuous
Signal format system
Mexican and Latin American models:
NTSC
Other models:
NTSC/PAL
Tuner section
System
PLL quartz-locked digital 
synthesizer
FM tuner section
Tuning range
87.5-108.0 MHz (50 kHz 
step)
Antenna (aerial)
FM wire antenna (aerial)
Antenna (aerial) terminals 75 ohms, unbalanced
Intermediate frequency
10.7 MHz
AM tuner section
Tuning range
Mexican, and Latin American models:
530 – 1,710 kHz (with the 
interval set at 10 kHz)
531 – 1,710 kHz (with the 
interval set at 9 kHz)
Other models:
531 – 1,602 kHz (with the 
interval set at 9 kHz)
530 – 1,610 kHz (with the 
interval set at 10 kHz)
Antenna (aerial)
AM loop antenna (aerial)
Intermediate frequency
450 kHz
Video section
Outputs
VIDEO: 1 Vp-p 75 ohms
S VIDEO:
Y: 1 Vp-p 75 ohms
C: 0.286 Vp-p 75 ohms
COMPONENT:
Y: 1 Vp-p 75 ohms
P
B
/C
B
, P
R
/C
R
: 0.7 Vp-p 
75 ohms
HDMI OUT: Type A (19 
pin)
Inputs
VIDEO: 1 Vp-p 75 ohms
General
Power requirements
Mexican models: 
120 V AC, 60 Hz
Latin American models: 
110 - 240 V AC, 50/60 Hz
Other models: 
220 - 240 V AC, 50/60 Hz
2
HCD-DZ7T
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.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
damaged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 °C
during repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
This appliance is classified as
a CLASS 1 LASER product.
This marking is located on
the rear exterior.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation
exposure.
SAFETY-RELATED  COMPONENT  WARNING!!
COMPONENTS  IDENTIFIED  BY  MARK  
0
  OR  DOTTED  LINE
WITH  MARK  
0
  ON  THE  SCHEMATIC  DIAGRAMS  AND  IN
THE  PARTS  LIST  ARE  CRITICAL  TO  SAFE  OPERATION.
REPLACE  THESE  COMPONENTS  WITH  SONY  PARTS  WHOSE
PART  NUMBERS  APPEAR  AS  SHOWN  IN  THIS  MANUAL  OR
IN  SUPPLEMENTS  PUBLISHED  BY  SONY.
MODEL IDENTIFICATION
– Rear Panel –
Abbreviation
E32 : 110 – 240V AC area in E model
MX : Mexican model
SP
: Singapore model
TH
: Thai model
Model
Part No.
SP model
3-197-464-5
[]
E32 model
3-197-464-6
[]
MX model
3-197-464-7
[]
TH model
3-215-699-5
[]
Special Component Notice
The components identified by mark 9  contain confidential
information.
Strictly follow the instructions whenever the components are repaired
and/or replaced.
Power consumption
Mexican models: 
On: 180 W
Standby: 0.3 W (at the 
Power Saving mode) 
Latin American models: 
On: 190 W
Standby: 0.3 W (at the 
Power Saving mode) 
Other models: 
On: 180 W
Standby: 0.3 W (at the 
Power Saving mode) 
Dimensions (approx.)
430 
× 63×  380 mm (w/h/d) 
incl. projecting parts
Mass (approx.)
4.2 kg
Design and specifications are subject to change 
without notice.
COAXIAL
AM
FM75
(DVD ONLY)
OUT
FRONT R
WOOFER
L
WOOFER
R
FRONT L
SUR R
SUR L
SPEAKER
SPEAKER
CENTER
TV
SAT/CABLE
OPTICAL
COAXIAL
DIGITAL IN
COMPONENT VIDEO OUT
R
L
AUDIO IN
(DVD ONLY)
Y
P
B
/C
B
P
R
/C
R
D-LIGHT SYNC OUT
SAT/CABLE
MONITOR OUT
VIDEO
(DVD ONLY)
S VIDEO
R
L
AUDIO IN
VIDEO IN
Parts No.
Ver. 1.1
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
Page of 102
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Here you can view online or download Sony HCD-DZ7T Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sony HCD-DZ7T Audio. Information contained in Sony HCD-DZ7T service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).