Document
CDX-GT48UM/GT480U/http://www.xiaoyu163.com
QQSE3RV7IC6E3M1AN5U1AL50
8G9T24840U9S/8GT24894U9S
E Model
CDX-GT480U/GT480US
Ver. 1.0 2008.11
Indian Model
CDX-GT48UM/GT484US
TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299
Photo: CDX-GT480US
• The tuner and CD sections have no adjustments.
Model Name Using Similar Mechanism CD Drive Mechanism Type Optical Pick-up Name
NEW MG-101Y-188//C DAX-25A
TEL 13942296513CD player section Signal-to-noise ratio: 120 dB Frequency response: 10 – 20,000 Hz Wow and flutter: 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
SPECIFICATIONS
QQ 376315150 892498299USB Player section
Tone controls:
Interface: USB (Full-speed)
Low: ±10 dB at 60 Hz (XPLOD)
Maximum current: 500 mA
Mid: ±10 dB at 1 kHz (XPLOD)
Power amplifier section Outputs: Speaker outputs (sure seal connectors) Speaker impedance: 4 – 8 ohms Maximum power output: 52 W × 4 (at 4 ohms)
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
General
(7 1/8 × 2 × 7 1/8 in.) (w/h/d)
Outputs:
Mounting dimensions:
Audio outputs terminal
Approx. 182 × 53 × 162 mm
(front, sub/rear switchable)
(7 1/4 × 2 1/8 × 6 1/2 in.) (w/h/d)
Power antenna (aerial) relay control terminal Mass: Approx. 1.2 kg (2 lb. 11 oz.)
Power amplifier control terminal
Supplied accessories:
Inputs:
Card remote commander: RM-X151
Remote controller input terminal
Parts for installation and connections (1 set)
Antenna (aerial) input terminal
AUX input jack (stereo mini jack)
Design and specifications are subject to change
USB signal input terminal
without notice.
www x aoy u163 com. i9-889-365-01 Sony Corporation
FM/AM COMPACT DISC PLAYER
.
2008K04-1
Audio&Video Business Group
© 2008.11
Published by Sony Techno Create Corporation
http://www.xiaoyu163.com
TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com CDX-GT48UM/GT480U/GT480US/GT484US
MODEL IDENTIFICATION
QQ 376315150 892498299The CDX-GT480U and CDX-GT480US include the model
NOTES ON LASER DIODE EMISSION CHECK The laser beam on this model is concentrated so as to be focused
manufactured in Chinese and the model manufactured in Thai.
on the disc reflective surface by the objective lens in the optical
This service manual guides the model manufactured in Chinese.
pickup block. Therefore, when checking the laser diode emission,
Check the part number specified on the model number label when
observe from more than 30 cm away from the objective lens.
performing service and inspection.
NOTES ON CHIP COMPONENT REPLACEMENT
–Bottom View–
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be
damaged by heat.
TEST DISCS Please use the following test discs for the check on the CD section.
YDES-18 (Part No. 3-702-101-01) PATD-012 (Part No. 4-225-203-01)
FRONT PANEL
Part No.
CAUTION Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.
Model
Part No.
GT480U: E
4-119-904-0[] 4-119-905-0[]
GT480US: E
4-119-906-0[] 4-119-907-0[]
GT480US: MX
4-119-908-0[]
GT480US: AR
4-119-909-0[]
GT484US: IND
4-119-910-0[]
TEL 13942296513GT48UM: IND
4-119-911-0[]
• Abbreviation
AR : Argentina model
IND : Indian model
MX : Mexican model
If the optical pick-up block is defective, please replace the whole optical pick-up block. Never turn the semi-fixed resistor located at the side of optical pick-up block.
optical pick-up
QQ 376315150 892498299
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic break-down because of the potential difference generated by the charged electrostatic load, etc. on clothing and the human body. During repair, pay attention to electrostatic break-down and also use the procedure in the printed matter which is included in the repair parts. The flexible board is easily damaged and should be handled with care.
semi-fixed resistor
SAFETY-RELATED COMPONET WARNING!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
www . xiaoy u163.REPLACE THESE COMPONENTS WITH SONY P.