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 fl 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 amplifi 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 amplifi 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 specifi cations are subject to change
without notice.
Photo: CDX-GT480US
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