HCD-GZR77D, MHC-GZR77D - Sony Audio Service Manual (repair manual)

hcd-gzr77d, mhc-gzr77d service manual
Model
HCD-GZR77D MHC-GZR77D
Pages
98
Size
4.64 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
hcd-gzr77d-mhc-gzr77d.pdf
Date

Read Sony HCD-GZR77D / MHC-GZR77D Service Manual online

SERVICE MANUAL
Sony Corporation
Published by Sony Techno Create Corporation
HCD-GZR77D
DVD DECK RECEIVER
9-889-512-03
2011I33-1
© 
2011.09
E Model
Ver. 1.2  2011.09
•  HCD-GZR77D is the tuner, deck, 
  DVD and amplifi er section 
 in 
MHC-GZR77D.
DVD
Section
Model Name Using Similar Mechanism
HCD-GZR7D
DVD Mechanism Type
CDM74HF-DVBU101
Optical Pick-up Name
KHM-313CAB
Tape Deck
Section
Model Name Using Similar Machanism
NEW
Tape Transport Mechanism Type
CWP42FR605
SPECIFICATIONS
Amplifi er Section 
The following measured at AC 127, 220, 240 V, 50/60 Hz
(Saudi Arabian model)
The following measured at AC 120, 220, 240 V, 50/60 Hz (Other models)
MHC-GZR77D
Power output (rated):  
105 W + 105 W (at 6 W, 1 kHz, 1% THD)
RMS output power (reference):
 
180 W + 180 W (per channel at 6 W, 1 kHz, 
 10% 
THD)
Inputs
VIDEO/SAT VIDEO IN (phono jack): 
 
1 Vp-p, 75 ohms
VIDEO/SAT AUDIO IN L/R (phono jacks): 
 
voltage 250/450 mV, impedance 47 kilohms
MIC 1/MIC 2 (phone jacks): 
 
sensitivity 1 mV, impedance 10 kilohms
Outputs
VIDEO OUT (phono jack):
 
max. output level 1 Vp-p, unbalanced, Sync 
 
negative, load impedance 75 ohms
COMPONENT VIDEO OUT: 
 
Y: 1 Vp-p, 75 ohms 
 
PB/CB: 0.7 Vp-p, 75 ohms
 
PR/CR: 0.7 Vp-p, 75 ohms
DVD DIGITAL OUT 
(Square optical connector jack, rear panel):
 
Wavelength 660 nm
PHONES (stereo mini jack):
 
accepts headphones of 8 ohms or more
SUBWOOFER OUT: 
Voltage 1 V, impedance 1 kilohms
FRONT SPEAKER: 
Use only the supplied speaker SS-GZR77D.
 (USB) port: Type A (1)
 
Maximum current: 500 mA
– Continued on next page –
HCD-GZR77D
2
SAFETY-RELATED  COMPONET  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.
Disc player section 
System: 
Compact disc and digital audio and video system
Laser Diode Properties
 
Emission duration: Continuous Laser Output*: 
 
Less than 44.6
μW 
 
*This output is the value measurement at a distance 
 
of 200mm from the objective lens surface on the 
 
Optical Pick-up Block with 7mm aperture.
Frequency response  DVD (PCM 48 kHz): 2 Hz – 22 kHz (±1 dB)
 
CD: 2 Hz – 20 kHz (±0.5 dB)
Video color system format
 
NTSC and PAL
Tape deck section
Recording system: 
4-track 2-channel, stereo
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range: 
87.5 – 108.0 MHz (50 kHz step)
Antenna: 
FM lead antenna
Antenna terminals:  75 
Ω unbalanced
Intermediate frequency:
 10.7 
MHz 
AM tuner section
Tuning range:  
Saudi Arabian models:
 
531 – 1,602 kHz (9 kHz step)
Other models: 
531 – 1,602 kHz (with 9 kHz tuning interval)
 
530 – 1,610 kHz (with 10 kHz tuning interval)
Antenna: 
AM loop antenna
Antenna terminals:  External antenna terminal
Intermediate frequency:
 450 
kHz
General
Power requirements
Thai model: 
AC 220 V, 50/60 Hz 
Saudi Arabian model:
 
AC 120 – 127, 220, 230 – 240 V, 50/60 Hz, 
 
adjustable with voltage selector
Other models: 
AC 120, 220, 230 – 240 V, 50/60 Hz, 
 
adjustable with voltage selector
Power consumption  160 W
Dimensions (w/h/d) (excl. speakers) 
 Approx. 
280 
× 326 × 440 mm
Mass (excl. speakers)
 
Approx. 11.9 kg
Design and specifi cations are subject to change without notice.
Model
Parts No.
E3, E15
4-124-015-0[]
E12
4-124-015-1[]
SP
4-124-015-2[]
TH
4-124-015-3[]
PH
4-124-015-4[]
EA
4-124-015-5[]
E4
4-124-015-6[]
MODEL  IDENTIFICATION
– Back Panel –
• Abbreviation
  E3 
: 240V AC area in E model
  E15 
: Iran model
  E12 
: 220 – 240V AC area in E model
  SP 
: Singapore model
 TH  : 
Thai 
model
  PH 
: Philippines model
  EA 
: Saudi Arabia model
  E4 
: 110 – 120V/220 – 240V AC area in E model
Parts No.
Ver. 1.1
HCD-GZR77D
3
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 viscous (sticky, less prone to fl ow) 
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 dam-
aged by heat.
FLEXIBLE  CIRCUIT  BOARD  REPAIRING
• 
Keep the temperature of 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 classifi ed 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 specifi ed herein may result in hazardous radia-
tion exposure.
NOTES  ON  HANDLING  THE OPTICAL  PICK-UP  
BLOCK  OR  BASE  UNIT
The laser diode in the optical pick-up block may suffer electrostat-
ic 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 fl exible 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 refl ective surface by the objective lens in the optical 
pickup block. Therefore, when checking the laser diode emission, 
observe from more than 30 cm away from the objective lens.
HCD-GZR77D
4
1. 
SERVICING  NOTES 
 .............................................  
5
2. DISASSEMBLY
2-1.  Case (Side-L), Case (Side-R) ..........................................   8
2-2.  Top Panel Section ...........................................................   8
2-3. Loading 
Panel 
.................................................................   9
2-4. Chassis 
............................................................................   9
2-5.  Front Panel Section .........................................................   10
2-6.  Back Panel Section .........................................................   10
2-7.   MAIN Board ...................................................................   11
2-8.   POWER AMP Board ......................................................   11
2-9.   DVD Mechanism Deck, Tuner (TM901) ........................   12
2-10.  MIC Board, USB-LED Board ........................................   12
2-11.  Panel (FL) Section ..........................................................   13
2-12. FL Board .........................................................................   13
2-13.  FRONT Board, VOLUME Board ...................................   14
2-14. TC-AMP Board ...............................................................   14
2-15.  Tape Mechanism Deck ....................................................   15
2-16.  Lid (TC-L), Lid (TC-R) ..................................................   15
2-17.  DRIVER Board, SW Board ............................................   16
2-18. SENSOR Board ..............................................................   16
2-19.  MOTOR (TB) Board.......................................................   17
2-20.  MOTOR (LD) Board ......................................................   17
2-21. Chassis ............................................................................   18
2-22. DMB19 Board .................................................................   18
2-23. Base Unit .........................................................................   19
2-24. Optical Pick-up ...............................................................   19
3. 
TEST  MODE 
 ............................................................   20
4. MECHANICAL 
 
ADJUSTMENTS 
 ......................   24
5. ELECTRICAL 
 
ADJUSTMENTS 
 ........................   25
6. DIAGRAMS
6-1.  Block Diagram –RF/Servo Section– ...............................   29
6-2.  Block Diagram –Video Section– ....................................   30
6-3.  Block Diagram –Main Section– .....................................   31
6-4.  Block Diagram –Audio Section– ....................................   32
6-5.  Block Diagram –Display/Power Section– ......................   33
TABLE  OF  CONTENTS
6-6.  Printed Wiring Boards –Driver Section– ........................   35
6-7.  Schematic Diagram –Driver Section– ............................   36
6-8.  Printed Wiring Board –DMB19 Board (1/2)– ................   37
6-9.  Printed Wiring Board –DMB19 Board (2/2)– ................   38
6-10.  Schematic Diagram –DMB19 Board (1/4)– ...................   39
6-11.  Schematic Diagram –DMB19 Board (2/4)– ...................   40
6-12.  Schematic Diagram –DMB19 Board (3/4)– ...................   41
6-13.  Schematic Diagram –DMB19 Board (4/4)– ...................   42
6-14.  Printed Wiring Board –Main Section– ............................   43
6-15.  Schematic Diagram –Main Section (1/3)– ......................   44
6-16.  Schematic Diagram –Main Section (2/3)– ......................   45
6-17.  Schematic Diagram –Main Section (3/3)– ......................   46
6-18.  Printed Wiring Board –Mic Section– ..............................   47
6-19.  Schematic Diagram –Mic Section– ................................   48
6-20.  Printed Wiring Board –TC Amp Section– ......................   49
6-21.  Schematic Diagram –TC Amp Section– .........................   50
6-22.  Printed Wiring Board –Video Section–...........................   51
6-23.  Schematic Diagram –Video Section– .............................   52
6-24.  Printed Wiring Boards –Front Section– ..........................   53
6-25.  Schematic Diagram –Front Section– ..............................   54
6-26.  Printed Wiring Boards –Left/Right Section– ..................   55
6-27.  Schematic Diagram –Left/Right Section– ......................   56
6-28.  Printed Wiring Board –FL Section–................................   57
6-29.  Schematic Diagram –FL Section– ..................................   58
6-30.  Printed Wiring Boards –Power Amp/HP Section– .........   59
6-31.  Schematic Diagram –Power Amp/HP Section– ..............   60
6-32.  Printed Wiring Boards –Trans Section–..........................   61
6-33.  Schematic Diagram –Trans Section– ..............................   62
7. 
EXPLODED  VIEWS
7-1. Overall 
Section 
...............................................................  73
7-2.  Front Panel Section-1 ......................................................   74
7-3.  Front Panel Section-2 ......................................................   75
7-4.  Top Panel Section ...........................................................   76
7-5. Chassis 
Section 
...............................................................  77
7-6.  DVD Mechanism Deck Section-1 ..................................   78
7-7.  DVD Mechanism Deck Section-2 ..................................   79
8. 
ELECTRICAL  PARTS  LIST 
 ..............................   80
Page of 98
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Here you can read online and download Sony HCD-GZR77D / MHC-GZR77D Service Manual in PDF. HCD-GZR77D / MHC-GZR77D service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony HCD-GZR77D / MHC-GZR77D Audio. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.