Sony WX-C570R User manual
– 1 –
Model Name Using Similar Mechanism CDX-3180
CD Drive Mechanism Type MG-363X-121
Optical Pick-up Name KSS-521A
Model Name Using Similar Mechanism XR-2800
Tape Transport Mechanism Type MG-25E-136
SERVICE MANUAL
AEP Model
UK Model
WX-C570R
CHANGER CONTROL AUDIO MASTER
MICROFILM
CD player section
Signal-to-noise ratio 96 dB
Frequency response 10 - 20,000 Hz
Wow and flutter Below measurable limit
Cassette player section
Tape track 4-track 2-channel stereo
Wow and flutter 0.08 % (WRMS)
Frequency response 30 - 18,000 Hz
Signal-to-noise ratio
Cassette type Dolby B NR Dolby NR off
TYPE II, IV 67 dB 58 dB
TYPE I 64 dB 55 dB
Tuner section
FM
Tuning range 87.5 - 108.0 MHz
Antenna terminal External antenna connector
Intermediate frequency 10.7 MHz
Usable sensitivity 9 dBf
Selectivity 75 dB at 400 kHz
Signal-to-noise ratio 65 dB (stereo),
68 dB (mono)
Harmonic distortion at 1 kHz
0.7% (stereo),
0.4% (mono)
Separation 35 dB at 1 kHz
Frequency response 30 - 15,000 Hz
SPECIFICATIONS
– Continued on next page –
CD
Section
TC
Section
MW/LW
Tuning range MW : 531 - 1,602 kHz
LW : 153 - 281 kHz
Antenna terminal External antenna connector
Intermediate frequency 10.71 MHz/450 kHz
Sensitivity MW : 30 µV
LW : 50 µV
Power amplifier section
Outputs Speaker outputs
(sure seal connectors)
Speaker impedance 4 - 8 ohms
Maximum power output 35 W ×4 (at 4 ohms)
Dolbynoisereduction manufactured under license from Dolby Labo-
ratories Licensing Corporation.
“DOLBY” and the double-D symbol aare trademarks of Dolby
Laboratories Licensing Corporation.
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
– 2 –
SERVICE NOTE
CAUTION
Use of controls or adjustments or performance of proce-
dures other than those specified herein may result in haz-
ardous radiation exposure.
Notes on Chip Component Replacement
•Never reuse a disconnected chip component.
•Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
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, ob-
serve from more than 30 cm away from the objective lens.
NOTES ON PICK-UP FLEXIBLE BOARD
The pick-up flexible board in this set is secured to the optical pick-
up with an adhesive tape. Once the tape is removed, an adhering
force becomes weak, and it cannot be reused.
Therefore, if the optical pick-up is replaced, replace also the pick-
up flexible board with a new one.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK !OR DOTTED LINE
WITH MARK !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.
General
Outputs Line outputs (2)
Power antenna relay
control lead
Power amplifier control
lead
Telephone ATT control
lead
Tone controls Bass ±10 dB at 100 Hz
Treble ±10 dB at 10 kHz
Power requirements 12 V DC car battery
(negative ground)
Dimensions Approx. 178 ×100 ×173 mm
(w/h/d)
Mounting dimension Approx. 178 ×100 ×155 mm
(w/h/d)
Mass Approx. 2.2 kg
Supplied accessories Parts for installation and
connections (1 set)
Decoy cover (1)
Labels for optional rotary
commander (2)
Design and specifications are subject to change without
notice.
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
– 3 –
TABLE OF CONTENTS
1. GENERAL
Location of Controls............................................................... 4
Getting Started........................................................................ 5
Setting the Clock .................................................................... 5
CD Player ............................................................................... 5
Cassette Player ....................................................................... 6
Radio ...................................................................................... 7
RDS ........................................................................................ 8
Other Functions .................................................................... 11
CD/MD Changer .................................................................. 12
Connections .......................................................................... 15
2. DISASSEMBLY
2-1. Front Panel Assy .............................................................. 17
2-2. Key Board ........................................................................ 17
2-3. CD Mechanism Block ...................................................... 18
2-4. Heat Sink .......................................................................... 18
2-5. CD Board ......................................................................... 19
2-6. Tape Mechanism Block .................................................... 19
2-7. Main Board ...................................................................... 20
2-8. Chassis (T) Sub Assy ....................................................... 20
2-9. Lever Assy........................................................................ 21
2-10. Servo Board...................................................................... 21
2-11. RollerAssy ....................................................................... 22
2-12. Chassis (OP) (O/S) Assy .................................................. 22
2-13. Optical Pick-up Block ...................................................... 23
3. ASSEMBLY OF MECHANISM DECK
Housing ................................................................................ 24
Arm (Suction)....................................................................... 24
Lever (LDG-A)/(LDG-B)..................................................... 25
Gear (Loading FT)................................................................ 25
Guide (C), Guide .................................................................. 26
Mounting Position of Main Motor Assy (M904) ................. 26
4. MECHANICAL ADJUSTMENTS.............................. 27
5. ELECTRICAL ADJUSTMENTS
Tape Section ......................................................................... 27
Tuner Section........................................................................ 28
CD Section ........................................................................... 32
6. DIAGRAMS
6-1. Block Diagram –CD Section–.......................................... 33
6-2. Block Diagram –Tape Section– ....................................... 35
6-3. Block Diagram –Main Section–....................................... 37
6-4. IC Pin Descriptions .......................................................... 39
6-5. Circuit Boards Location ................................................... 44
6-6. Printed Wiring Boards –CD Mechanism Section–........... 45
6-7. Schematic Diagram –CD Mechanism Section– ............... 47
6-8. Schematic Diagram –CD Section–................................... 50
6-9. Printed Wiring Board –CD Section–................................ 53
6-10. Schematic Diagram –Control Section– ............................ 55
6-11. Printed Wiring Board –Control Section– ......................... 57
6-12. Printed Wiring Board –Main Section– ............................. 61
6-13. Schematic Diagram –Main Section–................................ 65
7. EXPLODED VIEWS
7-1. Cover Section ................................................................... 73
7-2. Front Panel Section .......................................................... 74
7-3. Chassis Section ................................................................ 75
7-4. CD Mechanism Section (1) .............................................. 76
7-5. CD Mechanism Section (2) .............................................. 77
7-6. CD Mechanism Section (3) .............................................. 78
7-7. Tape Mechanism Section ................................................. 79
8. ELECTRICAL PARTS LIST ................................... 80
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
– 17 –
SECTION 2
DISASSEMBLY
Note : Follow the disassembly procedure in the numerical order given.
2-1. FRONT PANEL ASSY
2-2. KEY BOARD
1
PTT 2.6x1
4
3
PTT 2.6x6
5
PTT 2.6x6
4
PTT 2.6x6
9
claws
8
claws
0
front panel assy
6
PTT 2.6x10
7
cover
2
PTT 2.6x6
1
knob (VOL)
4
knob (D-BASS)
3
KEY boar
d
2
P 2x8
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
– 18 –
2-3. CD MECHANISM BLOCK
2-4. HEAT SINK
5
PTT 2.6x
6
1
PTT 2.6x10
2
PTT 2.6x6
3
CN401
6
bracket (CD)
4
CD mechanism block
1
PTT 2.6x10
4
heat sink
2
PTT 2.6x10
3
PTT 2.6x1
0
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
– 19 –
2-5. CD BOARD
2-6.TAPE MECHANISM BLOCK
1
CN802
3
CN403
2
CN404
5
PTT 2.6x10
4
ground point screw
(PTT 2.6x6)
7
CD board
6
claw
4
CN321
2
PTT 2.6x6
3
PTT 2.6x6
5
tape mechanism block
1
CN301
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
– 20 –
2-7. MAIN BOARD
2-8. CHASSIS (T) SUB ASSY
2
MAIN board
3
insulating shee
t
1
ground point screws
(PTT 2.6x6)
4
chassis (T) sub assy
2
P 2x3
3
P 2x3
1
Unsolder the
lead wires.
red
white
black
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
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