HCD-GNZ77D, HCD-GNZ88D, MHC-GNZ77D, MHC-GNZ88D - Sony Audio Service Manual (repair manual)

hcd-gnz77d, hcd-gnz88d, mhc-gnz77d, mhc-gnz88d service manual
Model
HCD-GNZ77D HCD-GNZ88D MHC-GNZ77D MHC-GNZ88D
Pages
116
Size
10.98 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
hcd-gnz77d-hcd-gnz88d-mhc-gnz77d-mhc-gnz88d.pdf
Date

Read Sony HCD-GNZ77D / HCD-GNZ88D / MHC-GNZ77D / MHC-GNZ88D Service Manual online

1
Ver. 1.4  2009.10
Model Name Using Similar Mechanism
HCD-GNZ7D/GNZ8D/GNZ9D
DVD
DVD Mechanism Type
CDM74HF-DVBU101//C
Section
Optical Pick-up Name
KHM-310CAB/C2NP
Tape Deck
Model Name Using Similar Machanism
NEW
Section
SERVICE MANUAL
E Model
HCD-GNZ77D/GNZ88D
Amplifier section
HCD-GNZ88D
The following measured at AC 120, 127, 220, 240 V,
50/60 Hz
DIN power output (rated)
75 W + 75 W
(4 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
Front speaker:
100 W + 100 W
(4 ohms at 1 kHz, 10%
THD)
Center speaker:
40 W (8 ohms at 1 kHz,
10% THD)
Surround speaker:
40 W + 40 W
(8 ohms at 1 kHz, 10%
THD)
HCD-GNZ77D
The following measured at AC 120, 127, 220, 240 V,
50/60 Hz
DIN power output (rated)
75 W + 75 W
(4 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
100 W + 100 W
(4 ohms at 1 kHz, 10%
THD)
Inputs
VIDEO INPUT (phono jacks):
VIDEO: 1 Vp-p, 75 ohms
AUDIO L/R: Voltage 250 mV,
impedance 47 kilohms
TV/SAT AUDIO IN L/R (phono jack):
Voltage 250 mV/450 mV,
impedance 47 kilohms
SPECIFICATIONS
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
P
B
/C
B
: 0.7 Vp-p, 75 ohms
P
R
/C
R
: 0.7 Vp-p, 75 ohms
S-VIDEO OUT (4-pin/mini-DIN jack):
Y: 1 Vp-p, unbalanced,
Sync. negative
C: 0.286 Vp-p, load
impedance 75 ohms
PHONES (stereo mini jack):
Accepts headphones of
8 ohms or more
FRONT SPEAKER:
Use only the supplied speakers
SURROUND SPEAKER (HCD-GNZ88D):
Use only the supplied speakers
CENTER SPEAKER (HCD-GNZ88D):
Use only the supplied speakers
SUB WOOFER OUT (phono jack):
Voltage 250 mV,
impedance 1 kilohm
Sony Corporation
Audio&Video Business Group
Published by Sony Techno Create Corporation
9-887-258-05
2009J04-1
© 2009.10
– Continued on next page –
DVD DECK RECEIVER
(Photo: HCD-GNZ77D)
• HCD-GNZ77D/GNZ88D are the
tuner, deck, DVD and amplifier
section in MHC-GNZ77D/GNZ88D.
2
HCD-GNZ77D/GNZ88D
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.
Disc player section
System
Compact disc and digital
audio and video system
Laser
Semiconductor laser
(DVD: 
λ=650 nm,
CD: 
λ=790 nm)
Emission duration:
continuous
Frequency response
DVD (PCM 48 kHz):
2 Hz – 22 kHz (±1 dB)
CD: 2 Hz – 20 kHz (±0.5 dB)
Video color system format
Latin American model:
NTSC
Other models: NTSC, PAL
Tape deck section
Recording system
4-track 2-channel stereo
Frequency response
50 – 13,000 Hz (±3 dB),
using Sony TYPE I tape
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 ohm unbalanced
Intermediate frequency 10.7 MHz
AM tuner section
Tuning range
Saudi Arabian model:
531 – 1,602 kHz (with the
interval set at 9 kHz)
Other models:
531 – 1,602 kHz (with the
interval set at 9 kHz)
530 – 1,710 kHz (with the
interval set at 10 kHz)
Antenna
AM loop antenna
Antenna terminals
External antenna terminal
Intermediate frequency 450 kHz
General
Power requirements
Saudi Arabian model:
120 – 127 V, 120 – 220 V or
220 – 240 V AC,
50/60 Hz
Adjustable with voltage
selector
Thai model:
220 V AC, 50/60 Hz
Other models:
120 V or 220 – 240 V AC,
50/60 Hz
Adjustable with voltage
selector
Power consumption
MHC-GNZ88D
100 watts
MHC-GNZ77D
75 watts
Dimensions (w/h/d) (Approx.)
280 
×
 326 
×
 385.5 mm
Mass (Approx.)
HCD-GNZ88D
6.5 kg
HCD-GNZ77D
6.4 kg
Design and specifications are subject to change without
notice.
3
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
HCD-GNZ77D/GNZ88D
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
breakdown 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 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 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.
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.
This appliance is
claassified as a CLASS 1
LASER product. This
label is located on the
rear exterior.
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.
Laser component in this product is capable
of emitting radiation exceeding the limit for
Class 1.
Ver. 1.1
NOTE ON REPLACEMENT OF DMB15 BOARD
New part of EEPROM (IC103) on the DMB15 board cannot be
used. Therefore, if the mounted DMB15 board (A-1167-719-A, etc.)
is replaced, exchange new EEPROM (IC103) with that used before
the replacement.
4
HCD-GNZ77D/GNZ88D
MODEL IDENTIFICATION
– BACK PANEL –
MODEL
PARTS No.
GNZ88D: E3, E15
2-663-830-0
s
GNZ88D: EA
2-663-830-1
s
GNZ88D: SP
2-663-830-2
s
GNZ88D: E12, E13
2-663-830-3
s
GNZ88D: PH
2-663-830-5
s
GNZ88D: TH
2-663-830-6
s
GNZ77D: E3, E15
2-663-831-0
s
GNZ77D: E2
2-663-831-1
s
GNZ77D: EA
2-663-831-2
s
GNZ77D: MY, SP
2-663-831-3
s
GNZ77D: E12, E13
2-663-831-4
s
GNZ77D: PH
2-663-831-6
s
GNZ77D: TH
2-663-831-7
s
• Abbreviation
E2
: 120 V AC area in E 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 : Iran model
EA
: Saudi arabia model
PH
: Philippine model
SP
: Singapore model
MX
: Mexican model
TH
: Thai model
MY
: Malaysia model
PARTS No.
Page of 116
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Here you can read online and download Sony HCD-GNZ77D / HCD-GNZ88D / MHC-GNZ77D / MHC-GNZ88D Service Manual in PDF. HCD-GNZ77D / HCD-GNZ88D / MHC-GNZ77D / MHC-GNZ88D service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony HCD-GNZ77D / HCD-GNZ88D / MHC-GNZ77D / MHC-GNZ88D 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.