CDX-GT81UW, CDX-GT860U — Sony Car Audio Service Manual (repair manual)

Model
CDX-GT81UW CDX-GT860U
Pages
55
Size
6.34 MB
Type
PDF
Document
Service Manual
Brand
Device
Car Audio
File
cdx-gt81uw-cdx-gt860u.pdf
Date

View Sony CDX-GT81UW / CDX-GT860U Service Manual online

SERVICE MANUAL
Sony Corporation
eVehicle Division
Published by Sony Techno Create Corporation
US Model
CDX-GT81UW
E Model
CDX-GT860U
9-887-514-02
2007C04-1
© 2007.03
Ver. 1.1  2007.03
SPECIFICATIONS
CD 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
CDX-GT81UW:
87.5 – 107.9 MHz
CDX-GT860U:
87.5 – 108.0 MHz (at 50 kHz step)
87.5 – 107.9 MHz (at 200 kHz step)
FM tuning interval
CDX-GT860U:
50 kHz/200 kHz switchable
Antenna terminal
External antenna connector
Intermediate frequency 10.7 MHz/450 kHz
Usable sensitivity
9 dBf
Selectivity
75 dB at 400 kHz
Signal-to-noise ratio
67 dB (stereo), 69 dB (mono)
Harmonic distortion at 1 kHz
0.5% (stereo), 0.3% (mono)
Separation
35 dB at 1 kHz
Frequency response
30 – 15,000 Hz
AM
Tuning range
CDX-GT81UW:
530 – 1,710 kHz
CDX-GT860U:
531 – 1,602 kHz (at 9 kHz step)
530 – 1,710 kHz (at 10 kHz step)
AM tuning interval
CDX-GT860U:
9 kHz/10 kHz switchable
Antenna terminal
External antenna connector
Intermediate frequency 10.7 MHz/450 kHz
Sensitivity
30 
µV
• The tuner and CD sections have no adjustments.
Model Name Using Similar Mechanism
CDX-GT41UW/GT410U/
GT460U/GT460US
CD Drive Mechanism Type
MG-101U-188//Q
Optical Pick-up Name
DAX-25A
– Continued on next page –
CDX-GT81UW/GT860U
FM/AM COMPACT DISC PLAYER
AUDIO POWER SPECIFICATIONS (CDX-GT81UW)
POWER OUTPUT AND TOTAL HARMONIC DISTORTION
23.2 watts per channel minimum continuous average power into
4 ohms, 4 channels driven from 20 Hz to 20 kHz with no more
than 5% total harmonic distortion.
(Photo: CDX-GT81UW)
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.
3
CDX-GT81UW/GT860U
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size.)
 : LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40°C higher than
ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350°C.
Caution: The printed pattern (copper foil) may peel away if the
heated tip is applied for too long, so be careful!
• Strong viscosity
Unleaded solder is more viscous (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
This label is located on the bottom of the chassis.
This compact disc player is classified as a CLASS 1 LASER
product. The CLASS 1 LASER PRODUCT label is located on the
exterior.
• CDX-GT860U
Notes on Chip Component Replacement
• 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)
• CD playback
You can play CD-DA (also containing CD TEXT*), CD-R/CD-
RW (MP3/WMA/AAC files also containing Multi Session) and
ATRAC CD (ATRAC3 and ATRAC3plus format).
Type of discs
Label on the disc
CD-DA
MP3
WMA
AAC
ATRAC CD
* A CD TEXT disc is a CD-DA that includes information such as
disc, artist and track name.
4
CDX-GT81UW/GT860U
TABLE OF CONTENTS
1.
SERVICE NOTE
........................................................
5
2.
GENERAL
Location of Controls ........................................................
6
Connections .....................................................................
7
3.
DISASSEMBLY
3-1.
Base Panel Assy ............................................................... 12
3-2.
Sub Panel Assy ................................................................ 12
3-3.
CD Mechanism Block ..................................................... 13
3-4.
Driving Section (DB-F07) ............................................... 13
3-5.
Main Board ...................................................................... 14
3-6.
Servo Board ..................................................................... 14
3-7.
Chassis (T) Sub Assy ....................................................... 15
3-8.
Roller Arm Assy .............................................................. 15
3-9.
Chassis (OP) Assy ........................................................... 16
4.
DIAGNOSIS FUNCTION
........................................ 17
5.
DIAGRAMS
5-1.
Block Diagram –Main Section– ...................................... 21
5-2.
Block Diagram –Display Section– .................................. 22
5-3.
Printed Wiring Boards –Main Section– ........................... 24
5-4.
Schematic Diagram –Main Section (1/4)– ...................... 26
5-5.
Schematic Diagram –Main Section (2/4)– ...................... 27
5-6.
Schematic Diagram –Main Section (3/4)– ...................... 28
5-7.
Schematic Diagram –Main Section (4/4)– ...................... 29
5-8.
Printed Wiring Boards –Display Section– ....................... 30
5-9.
Printed Wiring Board –Base Panel Section– ................... 31
5-10. Schematic Diagram –Display Section– ........................... 32
6.
EXPLODED VIEWS
6-1.
Main Section .................................................................... 42
6-2.
Main Board Section ......................................................... 43
6-3.
Front Panel Section ......................................................... 44
6-4.
CD Mechanism Section (MG-101U-188//Q) .................. 45
7.
ELECTRICAL PARTS LIST
.................................. 46
Ver. 1.1
Page of 55
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Download Sony CDX-GT81UW / CDX-GT860U Service Manual (Repair Manual)

Here you can view online or download Sony CDX-GT81UW / CDX-GT860U Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sony CDX-GT81UW / CDX-GT860U Car Audio. Information contained in Sony CDX-GT81UW / CDX-GT860U service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).