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Sony CDX-GT48UM - User Manual

Sony CDX-GT48UM
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SERVICE MANUAL
Sony Corporation
Audio&Video Business Group
Published by Sony Techno Create Corporation
CDX-GT48UM/GT480U/
GT480US/GT484US
FM/AM COMPACT DISC PLAYER
9-889-365-01
2008K04-1
©
2008.11
E Model
CDX-GT480U/GT480US
Indian Model
CDX-GT48UM/GT484US
Ver. 1.0 2008.11
SPECIFICATIONS
CD player section
Signal-to-noise ratio: 120 dB
Frequency response: 10 – 20,000 Hz
Wow and utter: Below measurable limit
Tuner section
FM
Tuning range:
87.5 – 108.0 MHz (at 50 kHz step)
87.5 – 107.9 MHz (at 200 kHz step)
FM tuning interval: 50 kHz/200 kHz switchable
Antenna (aerial) terminal:
External antenna (aerial) connector
Intermediate frequency: 150 kHz
Usable sensitivity: 10 dBf
Selectivity: 75 dB at 400 kHz
Signal-to-noise ratio: 70 dB (mono)
Separation: 40 dB at 1 kHz
Frequency response: 20 – 15,000 Hz
AM
Tuning range:
531 – 1,602 kHz (at 9 kHz step)
530 – 1,710 kHz (at 10 kHz step)
AM tuning interval: 9 kHz/10 kHz switchable
Antenna (aerial) terminal:
External antenna (aerial) connector
Intermediate frequency: 25 kHz
Sensitivity: 26 μV
USB Player section
Interface: USB (Full-speed)
Maximum current: 500 mA
Power ampli er section
Outputs: Speaker outputs (sure seal connectors)
Speaker impedance: 4 – 8 ohms
Maximum power output: 52 W × 4 (at 4 ohms)
General
Outputs:
Audio outputs terminal
(front, sub/rear switchable)
Power antenna (aerial) relay control terminal
Power ampli er control terminal
Inputs:
Remote controller input terminal
Antenna (aerial) input terminal
AUX input jack (stereo mini jack)
USB signal input terminal
Model Name Using Similar Mechanism NEW
CD Drive Mechanism Type MG-101Y-188//C
Optical Pick-up Name DAX-25A
The tuner and CD sections have no adjustments.
Tone controls:
Low: ±10 dB at 60 Hz (XPLOD)
Mid: ±10 dB at 1 kHz (XPLOD)
High: ±10 dB at 10 kHz (XPLOD)
Power requirements: 12 V DC car battery
(negative ground (earth))
Power supply voltage: 11 – 16 V
Dimensions: Approx. 178 × 50 × 179 mm
(7
1
/8 × 2 × 7
1
/8 in.) (w/h/d)
Mounting dimensions:
Approx. 182 × 53 × 162 mm
(7
1
/4 × 2
1
/8 × 6
1
/2 in.) (w/h/d)
Mass: Approx. 1.2 kg (2 lb. 11 oz.)
Supplied accessories:
Card remote commander: RM-X151
Parts for installation and connections (1 set)
Design and speci cations are subject to change
without notice.
Photo: CDX-GT480US
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Summary

SPECIFICATIONS

PLAYER SECTIONS

Details on CD, USB, and amplifier sections.

TUNER AND RADIO SECTIONS

FM and AM tuner specifications.

GENERAL AND POWER DETAILS

General specs, power, dimensions, and accessories.

SERVICE NOTE

EXTENSION CABLE AND SERVICE POSITION

Instructions on connecting a jig for servicing.

REPLACEMENT PROCEDURES

Guides for replacing USB connector and servo board.

CONNECTOR HANDLING

Precautions for 20-pin connector.

GENERAL

LOCATION OF CONTROLS

Identifies controls on the unit and remote.

CONNECTIONS

Details on wiring and connections.

DISASSEMBLY

DISASSEMBLY SEQUENCE

Overview of the disassembly order.

SUB PANEL & CD MECHANISM DISASSEMBLY

Steps for sub panel and CD mechanism.

BOARD & CHASSIS DISASSEMBLY

Procedures for main, servo boards, and chassis.

ARM, MOTOR, & PICK-UP DISASSEMBLY

Steps for roller arm, sled motor, and pick-up.

DIAGRAMS

BLOCK DIAGRAMS

Diagrams showing system signal flow.

PRINTED WIRING BOARDS

Layouts for main and key boards.

SCHEMATIC DIAGRAMS

Detailed circuit schematics.

IC BLOCK DIAGRAMS

Diagrams for specific integrated circuits.

EXPLODED VIEWS

MAIN SECTION

Exploded view of the main assembly.

FRONT PANEL SECTION

Exploded view of the front panel.

CD MECHANISM SECTION

Exploded view of the CD mechanism.

ELECTRICAL PARTS LIST

COMPONENT LISTINGS

Lists various electronic components by type.

CONNECTORS, DIODES, AND ICs

Lists connectors, diodes, ICs, and related components.

TRANSISTORS AND RESISTORS

Lists transistors and resistors.

SWITCHES, ABSORBERS, AND MISCELLANEOUS

Lists switches, surge absorbers, and other parts.

ACCESSORIES AND INSTALLATION PARTS

Lists accessories and installation parts.

Summary

SPECIFICATIONS

PLAYER SECTIONS

Details on CD, USB, and amplifier sections.

TUNER AND RADIO SECTIONS

FM and AM tuner specifications.

GENERAL AND POWER DETAILS

General specs, power, dimensions, and accessories.

SERVICE NOTE

EXTENSION CABLE AND SERVICE POSITION

Instructions on connecting a jig for servicing.

REPLACEMENT PROCEDURES

Guides for replacing USB connector and servo board.

CONNECTOR HANDLING

Precautions for 20-pin connector.

GENERAL

LOCATION OF CONTROLS

Identifies controls on the unit and remote.

CONNECTIONS

Details on wiring and connections.

DISASSEMBLY

DISASSEMBLY SEQUENCE

Overview of the disassembly order.

SUB PANEL & CD MECHANISM DISASSEMBLY

Steps for sub panel and CD mechanism.

BOARD & CHASSIS DISASSEMBLY

Procedures for main, servo boards, and chassis.

ARM, MOTOR, & PICK-UP DISASSEMBLY

Steps for roller arm, sled motor, and pick-up.

DIAGRAMS

BLOCK DIAGRAMS

Diagrams showing system signal flow.

PRINTED WIRING BOARDS

Layouts for main and key boards.

SCHEMATIC DIAGRAMS

Detailed circuit schematics.

IC BLOCK DIAGRAMS

Diagrams for specific integrated circuits.

EXPLODED VIEWS

MAIN SECTION

Exploded view of the main assembly.

FRONT PANEL SECTION

Exploded view of the front panel.

CD MECHANISM SECTION

Exploded view of the CD mechanism.

ELECTRICAL PARTS LIST

COMPONENT LISTINGS

Lists various electronic components by type.

CONNECTORS, DIODES, AND ICs

Lists connectors, diodes, ICs, and related components.

TRANSISTORS AND RESISTORS

Lists transistors and resistors.

SWITCHES, ABSORBERS, AND MISCELLANEOUS

Lists switches, surge absorbers, and other parts.

ACCESSORIES AND INSTALLATION PARTS

Lists accessories and installation parts.

Sony CDX-GT48UM Specifications

General IconGeneral
Tuner BandsFM/AM
TunerYes
Preset Stations30
CD PlaybackYes
MP3 PlaybackYes
WMA PlaybackYes
AAC PlaybackYes
USB PortYes
BluetoothNo
AUX InputYes
Display TypeLCD
Display Number of Lines1
DisplayYes
EqualizerYes
Pre-out Voltage2.5V
Removable Front PanelYes
Detachable FaceplateYes
Product ColourBlack
Power Output52 W
RMS Power17 Watts x 4

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