Sony CDX-GT81UW - Usb Receiver, Service Manual

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2
CDX-GT81UW/GT860U
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.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
USB Player section
Interface USB (Full-speed)
Maximum current 500 mA
Power amplifier 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/rear)
Subwoofer output terminal (mono)
Power antenna relay control terminal
Power amplifier control terminal
Inputs Telephone ATT control terminal
Illumination control terminal
BUS control input terminal
BUS audio input terminal
Remote controller input terminal
Antenna input terminal
AUX input jack (stereo mini jack)
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)
Dimensions Approx. 178
×
50
×
190 mm
(7
1/8
×
2
×
7
1/2
in.) (w/h/d)
Mounting dimensions Approx. 182
×
53
×
163 mm
(7
1/4
×
2
1/8
×
6
1/2
in.) (w/h/d)
Mass Approx. 1.6 kg (3 lb. 9 oz.)
Supplied accessories Card remote commander:
CDX-GT81UW:
RM-X152
CDX-GT860U:
RM-X156
USB cap
Parts for installation and connections (1 set)
Design and specifications are subject to change without
notice.
US and foreign patents licensed from Dolby
Laboratories.
optical pick-up
semi-fixed resistor
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
breakdown because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic breakdown 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.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
SERVICE NOTES
SAFETY-RELATED COMPONENT 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.
REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.