Sony HCD-GPX5G - Service 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.

Summary

SERVICE MANUAL & SPECIFICATIONS

SPECIFICATIONS

Detailed technical specifications for the audio system models.

SERVICING NOTES & SAFETY PRECAUTIONS

NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT

Precautions for handling optical pick-up blocks to prevent damage and ensure safety.

CAPACITOR DISCHARGE FOR ELECTRIC SHOCK PREVENTION

Critical safety procedure to discharge capacitors before servicing.

DISASSEMBLY PROCEDURES

2-1. DISASSEMBLY FLOW

A step-by-step flow chart illustrating the disassembly process of the unit.

2-2. CASE

Instructions and diagram for removing the outer casing of the unit.

2-7. MAIN BOARD

Procedure for removing the main circuit board.

TEST MODES & DIAGNOSTICS

[PANEL TEST MODE]

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

[COMMON TEST MODE]

Mode to check operations of the amplifier section.

Optical Block Diagnosis Flow (1;2)

Diagnostic flowchart for troubleshooting optical block issues.

ELECTRICAL CHECK & DIAGRAMS

FOCUS BIAS CHECK

Checks the focus bias of the optical pickup.

5-1. BLOCK DIAGRAM - CD;USB Section -

Block diagram illustrating the CD and USB signal paths and components.

5-3. BLOCK DIAGRAM - AMP Section -

Block diagram detailing the audio amplifier circuitry and signal flow.

5-7. SCHEMATIC DIAGRAM - 4 CH DAMP Board (1;3) -

Schematic diagram for the 4CH DAMP board section 1/3.

EXPLODED VIEWS & PARTS LIST

6-1. CASE SECTION

Exploded view showing parts of the unit's case assembly.

SECTION 7 ELECTRICAL PARTS LIST

Comprehensive list of all electrical components used in the unit.

< CAPACITOR >

List of capacitors used in the 4CH DAMP board.

Sony HCD-GPX5G Specifications

General

Model	HCD-GPX5G
Category	Receiver
Speaker Configuration	2.0
Bluetooth	Yes
USB Playback	Yes
FM Tuner	Yes
CD Player	Yes
Audio formats	MP3, WMA
Tuner Bands	FM
Frequency Response	20 Hz - 20 kHz
Functions	CD, USB, FM, Bluetooth
Type	Mini Hi-Fi System