Read Sony HCD-GNZ777D / HCD-GNZ888D Service Manual online
1
Ver. 1.2 2007. 10
Model Name Using Similar Mechanism
HCD-GNZ77D/GNZ88D
DVD
DVD Mechanism Type
CDM74HF-DVBU101//C
Section
Optical Pick-up Name
KHM-313CAB/C2NP
Tape Deck
Model Name Using Similar Machanism
HCD-GNZ77D/GNZ88D
Section
SERVICE MANUAL
E Model
HCD-GNZ777D/GNZ888D
Amplifier section
HCD-GNZ888D
The following are measured at AC 120, 127, 220, 240 V,
50/60 Hz
Power output (rated)
Front speaker:
50/60 Hz
Power output (rated)
Front speaker:
130 W + 130 W
(4
(4
Ω, 1 kHz, 1% THD)
RMS output power (reference)
Front speaker:
Front speaker:
160 W + 160 W
(per channel at 4
(per channel at 4
Ω, 1 kHz, 10%
THD)
Center speaker:
50 W (per channel at 4
Ω, 1 kHz,
10% THD)
Surround speaker:
50 W + 50 W
(per channel at 8
(per channel at 8
Ω, 1 kHz, 10%
THD)
HCD-GNZ777D
The following are measured at AC 120, 127, 220, 240 V,
50/60 Hz
Power output (rated)
50/60 Hz
Power output (rated)
130 W + 130 W
(4
(4
Ω, 1 kHz, 1% THD)
RMS output power (reference)
Front speaker:
Front speaker:
160 W + 160 W
(per channel at 4
Ω, 1 kHz, 10%
THD)
SPECIFICATIONS
Inputs
VIDEO INPUT:
VIDEO INPUT:
VIDEO: 1 Vp-p, 75 ohms
AUDIO L/R: Voltage 250 mV,
impedance 47 kilohms
AUDIO L/R: Voltage 250 mV,
impedance 47 kilohms
TV/SAT AUDIO IN L/R:
Voltage 250 mV/450 mV,
impedance 47 kilohms
impedance 47 kilohms
MIC 1 or 2:
Sensitivity 1 mV,
impedance 10 kilohms
impedance 10 kilohms
Outputs
SUBWOOFER OUT:
SUBWOOFER OUT:
Voltage 250 mV,
impedance 1 kilohm
impedance 1 kilohm
VIDEO OUT:
max. output level
1 Vp-p, unbalanced, Sync
negative load impedance
75 ohms
1 Vp-p, unbalanced, Sync
negative load impedance
75 ohms
COMPONENT VIDEO OUT:
Y: 1 Vp-p, 75 ohms
P
P
B
/C
B
: 0.7 Vp-p, 75 ohms
P
R
/C
R
: 0.7 Vp-p, 75 ohms
S-VIDEO OUT:
Y: 1 Vp-p, unbalanced,
Sync. negative
C: 0.286 Vp-p, load
impedance 75 ohms
Sync. negative
C: 0.286 Vp-p, load
impedance 75 ohms
PHONES:
accepts headphones of
8 ohms or more
8 ohms or more
DVD DIGITAL OUT (MHC-GNZ777D only):
Wavelength: 660nm
Sony Corporation
Personal Audio Division
Published by Sony Techno Create Corporation
9-887-690-03
2007J04-1
© 2007. 10
– Continued on next page –
DVD DECK RECEIVER
(Photo: HCD-GNZ777D)
• HCD-GNZ777D/GNZ888D are the
tuner, deck, DVD and amplifier
section in MHC-GNZ777D/GNZ888D.
section in MHC-GNZ777D/GNZ888D.
2
HCD-GNZ777D/GNZ888D
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.
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
audio and video system
Laser
Semiconductor laser
(DVD:
(DVD:
λ=650 nm,
CD:
λ=790 nm)
Emission duration:
continuous
continuous
Frequency response
DVD (PCM 48 kHz):
2 Hz – 22 kHz (±1 dB)
CD: 2 Hz – 20 kHz (±0.5 dB)
2 Hz – 22 kHz (±1 dB)
CD: 2 Hz – 20 kHz (±0.5 dB)
Video color system format
Russian models: PAL
Other models: NTSC and PAL
Other models: NTSC and PAL
Tape deck section
Recording system
4-track 2-channel stereo
Frequency response
50 – 13,000 Hz (±3 dB),
using Sony TYPE I tape
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)
(50-kHz step)
Antenna
FM lead antenna
Antenna terminals
75 ohm unbalanced
Intermediate frequency 10.7 MHz
AM tuner section
Tuning range
Saudi Arabian and Russian models:
Saudi Arabian and Russian models:
531 – 1,602 kHz (with the
interval set at 9 kHz)
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)
interval set at 9 kHz)
530 – 1,610 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:
Saudi Arabian model:
120 – 127 V, 220 – 240 V AC,
50/60 Hz
Adjustable with voltage
selector
50/60 Hz
Adjustable with voltage
selector
Thai model:
220 V AC, 50/60 Hz
Russian and Indian models:
220 – 240 V AC, 50/60 Hz
Other models:
120 V, 220 – 240 V AC,
50/60 Hz
Adjustable with voltage
selector
50/60 Hz
Adjustable with voltage
selector
Power consumption
MHC-GNZ888D
MHC-GNZ888D
120 W
MHC-GNZ777D
90 W
Dimensions (w/h/d) (Approx.)
280
× 323.5 × 373.5 mm
Mass (Approx.)
HCD-GNZ888D
HCD-GNZ888D
7.1 kg
HCD-GNZ777D
6.9 kg
Design and specifications are subject to change without
notice.
notice.
3
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
other than those specified herein may result in hazardous
radiation exposure.
HCD-GNZ777D/GNZ888D
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
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.
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
• 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
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
• 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
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.
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.
be added to ordinary solder.
This appliance is
claassified as a CLASS 1
LASER product. This
label is located on the
rear exterior.
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.
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.
of emitting radiation exceeding the limit for
Class 1.
Ver. 1.2
4
HCD-GNZ777D/GNZ888D
MODEL IDENTIFICATION
– BACK PANEL –
MODEL
PARTS No.
GNZ888D: E3, E15
2-897-540-0
s
GNZ888D: EA
2-897-540-1
s
GNZ888D: SP
2-897-540-2
s
GNZ888D: E12
2-897-540-3
s
GNZ888D: TH
2-897-540-4
s
GNZ888D: PH
2-897-540-5
s
GNZ777D: E3, E15
2-897-541-0
s
GNZ777D: EA
2-897-541-1
s
GNZ777D: SP
2-897-541-2
s
GNZ777D: E12, E13
2-897-541-3
s
GNZ777D: TH
2-897-541-4
s
GNZ777D: PH
2-897-541-5
s
• Abbreviation
E3
: 240 V AC area in E model
E12 : 220-240 V AC area in E model
E13 : Russian model
E15 : Iran model
EA
E13 : Russian model
E15 : Iran model
EA
: Saudi arabia model
PH
: Philippine model
SP
: Singapore model
TH
: Thai model
PARTS No.
Ver. 1.1