Sony HCD-GPX7G User Manual

SERVICE MANUAL
Sony Corporation
Published by Sony EMCS (Malaysia) PG Tec
HCD-GPX5G/GPX7G/GPX8G
SPECIFICATIONS
9-890-600-02
2012G08-1
©
2012.07
E Model
Ver. 1.1 2012.07
• HCD-GPX5G is the amplifi er, USB, CD player and tuner
section in MHC-GPX5.
• HCD-GPX7G is the amplifi er, USB, CD player and tuner
section in MHC-GPX7.
• HCD-GPX8G is the amplifi er, USB, CD player and tuner
section in MHC-GPX8. Photo: HCD-GPX8G (E2 Model)
“WALKMAN” and “WALKMAN” logo are registered
trademarks of Sony Corporation.
MPEG Layer-3 audio coding technology and patents licensed
from Fraunhofer IIS and Thomson.
Windows Media is either a registered trademark or trademark
of Microsoft Corporation in the United States and/or other
countries.
This product contains technology subject to certain
intellectual property rights of Microsoft.
Use or distribution of this technology outside of this product
is prohibited without the appropriate license(s) from
Microsoft.
CD Section
Model Name Using Similar Mechanism
NEW
CD Mechanism Type CDM74I-DVBU201//M
Optical Pick-up Name CMS-ST6RFS3
COMPACT DISC RECEIVER
Amplifi er section
The following are measured at Mexican model:
AC 120 V – 240 V, 60 Hz
Other models:
AC 120 V – 240 V, 50/60 Hz
MHC-GPX8
Front/Satellite speaker
Power Output (rated):
300 W + 300 W (at 4 ohms, 1 kHz,
1% THD)
Front speaker
RMS output power (reference):
360 W + 360 W (per channel at 6 ohms,
1 kHz)
Satellite speaker
RMS output power (reference):
180 W+ 180 W (per channel at 12 ohms,
1 kHz)
Subwoofer
RMS output power (reference):
260 W + 260 W (per channel at 8 ohms,
100 Hz)
MHC-GPX7
HIGH speakers
Power Output (rated):
300 W + 300 W (at 4 ohms, 1 kHz,
1% THD)
RMS output power (reference):
495 W + 495 W (per channel at 4 ohms,
1 kHz)
LOW speakers
RMS output power (reference):
180 W + 180 W (10 ohms, 100 Hz)
MHC-GPX5
Front speaker
Power Output (rated):
240 W + 240 W (at 5 ohms, 1 kHz,
1% THD)
RMS output power (reference):
370 W + 370 W (per channel at 5 ohms,
1 kHz)
Subwoofer
RMS output power (reference):
360 W (5 ohms, 100 Hz)
Inputs
TV (AUDIO IN) L/R
Voltage 1.2 V, impedance 47 kilohms
DVD/SAT (AUDIO IN) L/R
Voltage 1.2 V, impedance 47 kilohms
PC/GAME (AUDIO IN) L/R
Voltage 1.2 V, impedance 47 kilohms
MIC (MHC-GPX8/MHC-GPX7 only)
Sensitivity 1 mV, impedance
10 kilohms
A (USB), B (USB) port: Type A
USB section
Supported bit rate
MP3 (MPEG 1 Audio Layer-3):
32 kbps – 320 kbps, VBR
WMA: 48 kbps – 192 kbps
AAC: 48 kbps – 320 kbps
Sampling frequencies
MP3 (MPEG 1 Audio Layer-3):
32 kHz/44.1 kHz/48 kHz
WMA: 44.1 kHz
AAC: 44.1 kHz
Supported USB device
Mass Storage Class
Maximum current
500 mA
Disc player section
System
Compact disc and digital audio system
Laser Diode Properties
Emission Duration: Continuous
Laser Output*: Less than 44.6 μW
* This output is the value measurement
at a distance of 200 mm from the
objective lens surface on the Optical
Pick-up Block with 7 mm aperture.
Frequency response
20 Hz – 20 kHz
Signal-to-noise ratio
More than 90 dB
Dynamic range
More than 88 dB
Tuner section
FM stereo, FM/AM superheterodyne tuner
Antenna:
FM lead antenna
AM loop antenna
FM tuner section
Tuning range
87.5 MHz – 108.0 MHz (50 kHz step)
AM tuner section
Tuning range
Pan American models:
530 kHz – 1,710 kHz (10 kHz step)
531 kHz – 1,710 kHz (9 kHz step)
Other models:
530 kHz – 1,610 kHz (10 kHz step)
531 kHz – 1,602 kHz (9 kHz step)
General
Power requirements
Mexican model: AC 120 V – 240 V, 60 Hz
Other models: AC 120 V – 240 V, 50/60 Hz
Power consumption
MHC-GPX8: 250 W
MHC-GPX7: 230 W
MHC-GPX5: 200 W
Dimensions (w/h/d) (excl. speakers)
(Approx.)
280 mm × 355 mm × 440 mm
Mass (excl. speakers) (Approx.)
HCD-GPX8G/HCD-GPX7G/
HCD-GPX5G: 7.0 kg
Supplied accessories
Remote control (1)
R6 (Size AA) batteries (2)
FM lead/AM loop antenna (1)
Spacer A (MHC-GPX8 only) (2)
Spacer B (MHC-GPX8 only) (2)
Speaker pads (MHC-GPX7 only) (8)
Design and specifi cations are subject to change
without notice.

Sony HCD-GPX7G Specifications

General

Brand	Sony
Model	HCD-GPX7G
Category	Stereo System
Language	English

Summary

SPECIFICATIONS

Amplifier section

Details power output specifications for different models.

Input Specifications

Lists input types and impedance requirements.

USB Section Details

Specifies supported bit rates and sampling frequencies.

Disc Player Specifications

Covers frequency response, signal-to-noise ratio, and dynamic range.

Tuner Section Details

Outlines FM/AM tuning ranges and tuner type.

General Specifications

Includes power requirements, dimensions, mass, and accessories.

SAFETY PROCEDURES

Leakage Test Procedure

Details methods to measure AC leakage current for safety.

Component Handling Precautions

Covers chip component replacement and laser diode safety.

SERVICING NOTES

Optical Pick-up Handling

Precautions for handling the optical pick-up block and flexible board.

Laser Diode Emission Check

Instructions for checking laser diode emission safely.

Unleaded Solder Usage

Characteristics and handling of unleaded solder.

IC502 Replacement Note

Note on replacing IC502 and the DMB22 board.

Disc Tray Lock Release

Procedure to unlock the disc tray.

DISASSEMBLY

Disassembly Flow

Outlines the sequential steps for disassembling the unit.

Case Removal

Details the procedure for removing the unit's outer case.

Loading Panel Removal

Instructions for removing the disc loading panel.

Front Panel Section Disassembly

Steps for disassembling the front panel assembly.

CD Mechanism Section Removal

Procedure for removing the CD mechanism.

TUNER1AM3R Board Removal

Steps for accessing and removing the tuner board.

MAIN Board Removal

Procedure for removing the main board.

Back Panel Section Disassembly

Instructions for disassembling the back panel.

4CH DAMP Board Removal

Steps for removing the 4CH DAMP board.

Chassis Section Disassembly

Procedure for disassembling the chassis.

Cover Dust CDM Removal

Instructions for removing the CD dust cover.

Optical Pick Up Removal

Steps for removing the optical pick-up assembly.

DMB22 Board Removal

Procedure for removing the DMB22 board.

DRIVER, SWITCH Board Removal

Steps for removing driver and switch boards.

SENSOR Board Removal

Procedure for removing the sensor board.

MOTOR (TB) Board Removal

Steps for removing the motor (TB) board.

MOTOR (LD) Board Removal

Procedure for removing the motor (LD) board.

TEST MODES

Panel Test Mode

Checks LEDs, keys, display, software version, and model info.

Common Test Mode

Checks amplifier section operations, including volume and EQ settings.

User Reset Procedure

Clears preset data to initial conditions, excluding history mode.

Cold Reset Procedure

Clears all data, including preset data, to initial conditions.

Tuner Step Change Mode

Toggles AM channel step between 9 kHz and 10 kHz.

CD Ship Mode (With Memory Clear)

Moves optical pickup and clears EEPROM data for shipping.

CD Ship Mode (Without Memory Clear)

Moves optical pickup to a vibration-durable position for shipping.

CD Tray Lock Mode

Locks the disc tray to prevent opening.

Factory Preset Mode

Loads factory default preset frequencies for FM and AM.

CDM Aging Mode

Displays total count of meter pointer touch and max switch.

History Mode

Checks important data stored when PROTECTOR happened.

Protect Kind Check Test Mode

Checks types of protect occurred during protector on.

ELECTRICAL CHECK

CD Section Focus Bias Check

Checks the optical pick-up's eye pattern for CD playback quality.

Tuner Section FM Auto Stop Check

Checks if the tuner automatically stops scanning at valid FM signals.

DIAGRAMS

Block Diagrams

Illustrates main functional blocks and connections across sections.

Printed Wiring Board Layouts

Component and conductor layouts for various boards.

Schematic Diagrams

Detailed circuit schematics for various boards and sections.

Waveforms

Visual representations of signal patterns for diagnostic checks.

IC Block Diagrams

Functional block diagrams of key integrated circuits.

IC Pin Function Descriptions

Details the function of each pin for specific ICs.

EXPLODED VIEWS

Case Section Exploded View

Exploded view of the unit's case and related parts.

Front Panel Section Exploded View

Exploded view of the front panel assembly and its components.

Back Panel Section Exploded View

Exploded view of the back panel and associated parts.

Chassis Section Exploded View

Exploded view of the internal chassis structure and components.

CD Mechanism Section (1) Exploded View

Exploded view of the CD mechanism parts (part 1).

CD Mechanism Section (2) Exploded View

Exploded view of the CD mechanism parts (part 2).

ELECTRICAL PARTS LIST

4CH DAMP Board Parts

Lists all electrical components for the 4CH DAMP board.

Display Board Parts

Lists electrical components for the display board.

DMB22 Board Parts

Lists electrical components for the DMB22 board.

Main Board Parts

Lists electrical components for the main board.

MIC Board Parts

Lists electrical components for the MIC board.

Tuner1AM3R Board Parts

Lists electrical components for the Tuner1AM3R board.