CDP-CX270, CDP-CX90ES - Sony Audio Service Manual (repair manual). Page 2

Read Sony CDP-CX270 / CDP-CX90ES Service Manual online

— 2 —
MODEL IDENTIFICATION
— BACK PANEL —
TABLE OF CONTENTS
1. SERVICING NOTE
........................................................... 3

2. GENERAL ....................................................................
4
3. DISASSEMBLY
3-1.
Front Panel Assembly ....................................................... 15
3-2.
Back Panel Assembly ....................................................... 15
3-3.
Table Assembly ................................................................ 16
3-4.
Mechanism Deck .............................................................. 17
3-5.
Base Unit .......................................................................... 17

4. TEST MODE ...............................................................
18
5. ADJUSTMENTS
5-1.
Mechanical Adjsument ..................................................... 21
5-2.
Electrical Block Checking ................................................ 27
6. DIAGRAMS
6-1.
Circuit Boards Location ................................................... 31
6-2.
IC Pin Function
• IC101 Digital Servo, Digital Signal Processor
 (CXD2545Q) ................................................................ 32
• IC401 System Control  (MB90677) .............................. 35
• IC407 OSD (MB90095-OEM166) ................................ 38
6-3.
Block Diagram ................................................................. 39
6-4.
Printed Wiring Board — BD, DISP Section — ............... 43
6-5.
Schematic Diagram — BD, DISP Section — .................. 47
6-6.
Printed Wiring Board — MAIN Section — ..................... 51
6-7.
Schematic Diagram — MAIN Section — ........................ 55
6-8.
IC Block Diagrams ........................................................... 60
7. EXPLODED VIEWS
7-1.
Case and Back Panel Section ........................................... 65
7-2.
Disc table Section ............................................................. 66
7-3.
Front panel Section ........................................................... 67
7-4.
Mechanism Section-1 (CDM-40) ..................................... 68
7-5.
Mechanism Section-2 (CDM-40) ..................................... 69
7-6.
Base Unit Section-1 (KSM-213BKN/M-N) ..................... 70
7-7.
Base Unit Section-2 (KSM-213BKN/M-N) ..................... 71
8. ELECTRICAL PARTS LIST
........................................ 72
4-983-366-
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
The laser component in this product
is capable of emitting radiation
exceeding the limit for Class 1.
This appliance is classified as
a CLASS 1 LASER product.
The CLASS 1 LASER
PRODUCT MARKING is
located on the rear exterior.
This caution label
is located inside
the unit.

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.

Flexible Circuit Board Repairing
• Keep the temperature of soldering iron around 270˚C
during repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
US Model
: 0
Canadian Model
: 1
AEP,German Model : 2
US Model
: 3
Canadian Model
: 4
CX270 :
CX270 :
CX270 :
CX90ES :
CX90ES :
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