Sony HCD-GNZ55D Service Manual

1
Ver. 1.2 2007. 08
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-GNZ55D
Amplifier section
The following measured at AC 120, 127, 220, 240 V,
50/60 Hz
DIN power output (rated)
40 W + 40 W
(4 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
60 W + 60 W
(4 ohms at 1 kHz, 10%
THD)
Inputs
MIC (phone jack): Sensitivity 1 mV,
impedance 10 kilohms
Outputs
VIDEO OUT (phono jack):
max. output level
1 Vp-p, unbalanced, Sync
negative load impedance
75 ohms
PHONES (stereo mini jack):
Accepts headphones of
8 ohms or more
FRONT SPEAKER: Use only the supplied speakers
SPECIFICATIONS
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
Sony Corporation
Personal Audio Division
Published by Sony Techno Create Corporation
9-887-296-03
2007H04-1
© 2007. 08
– Continued on next page –
DVD DECK RECEIVER
• HCD-GNZ55D is the tuner,
deck, DVD and amplifier
section in MHC-GNZ55D.
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TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com

Sony HCD-GNZ55D Specifications

General

Tuner Bands	FM/AM
CD Player	Yes
Cassette Deck	Yes
Remote Control	Yes
Bluetooth	No
Functions	CD, USB
USB Port	Yes
Type	Mini Hi-Fi System

Summary

Product Specifications

Repair and Handling Precautions

Laser Diode Emission Check

Procedures for checking laser diode emission to avoid hazardous radiation exposure.

DMB15 Board Replacement Note

Important note regarding EEPROM replacement when exchanging the DMB15 board.

Disassembly Procedures

Test Modes

Panel Test Mode

Mode to check fluorescent indicator tube, LEDs, keys, and software versions.

Common Test Mode

Mode to check Amplifier and Tape deck operations.

Mechanical Adjustments

Torque Measurement Specifications

Table detailing torque measurements for various adjustment points.

Electrical Adjustments

RFMON Level Check

Procedure to check RFMON signal level using an oscilloscope and test disc.

Video Level Check

Adjustment procedure to satisfy NTSC standard for video brightness.

Circuit Diagrams

RF/Servo Section Block Diagram

Block diagram illustrating the signal flow for the RF and Servo sections.

Video Section Block Diagram

Main Section Block Diagram

Electrical Parts List

ADC Board Parts List

DMB15 Board Parts List