Table Of Contents - Sony CDX-848X Service Manual
Compact disc changer
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Also See for CDX-848X:
- Service manual (46 pages) ,
- Operating instructions (5 pages) ,
- Limited warranty (1 page)
Table of Contents
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NOTE FOR REPLACING IC201
IC201 on MAIN board for this set has been changed in the mid-
way of manufacturing.
In a set that the former type of IC201 is mounted, SUB board is
connected to MAIN board (conductor side).
No service parts are supplied for the former type of IC201 and
SUB board.
When the former type of IC201 is replaced, remove SUB board
and replace the former type of IC201 with the new type.
CHECKING QUALITY OF SUB BOARD
If the set works normally after SUB board is removed from MAIN
board, SUB board has a trouble.
IN this case, remove SUB board and replace IC201 now in use
with the new type of IC201.
Former Type
MAIN
MB90473PFV-G-108-
BOARD
BNDE1
IC201
SUB
BOARD
- MAIN BOARD (Component Side) -
- MAIN BOARD (Conductor Side) -
SUB BOARD
New Type
MB90473PFV-G-110-
BNDE1
IC201
TABLE OF CONTENTS
.......................................................... 2
1.
Installation ....................................................................... 5
Connections ..................................................................... 6
2.
2-1. Disassembly Flow ........................................................... 7
2-2. Case (Upper T), Front Panel Assy .................................. 8
2-3. Mechanism Deck (MG-251B-137) ................................. 8
2-4. JACK Board, DIGITAL OUT Board .............................. 9
(Elevator Height Sensor) (RV202) ................................. 9
2-6. ELJ Motor Assy (Elevator) (M104) ................................ 10
2-7. Escutcheon (T) ................................................................ 10
2-8. Chassis (U.S) Sub Assy .................................................. 11
2-9. Chassis Assy .................................................................... 11
2-10. RF Board ......................................................................... 12
Optical Pick-up (KSS-720A) .......................................... 12
2-13. ELJ Motor Assy (Chucking) (M103) ............................. 13
3.
3-1. Assembly Flow ................................................................ 14
3-2. Optical Pick-up Complete Assy ...................................... 14
3-3. Gear (Lomini)/(Load Cam) Assy .................................... 15
3-4. Operation Check ............................................................. 15
4.
5.
6.
6-1. Block Diagram - SERVO Section - .............................. 19
POWER SUPPLY Section - ........................................... 20
Schematic Diagrams ....................................................... 21
6-4. Printed Wiring Boards - RF/LSW Boards - ................. 22
6-5. Schematic Diagram - RF/LSW Boards - ...................... 23
- MAIN Board (Component Side) - .............................. 24
- MAIN (Conductor Side)/SWITCH Boards - .............. 25
6-8. Schematic Diagram - MAIN Board (1/3) - .................. 26
6-9. Schematic Diagram - MAIN Board (2/3) - .................. 27
- MAIN (3/3)/SWITCH Boards - ................................. 28
- JACK/DIGITAL OUT Boards - ................................. 29
- JACK/DIGITAL OUT Boards - .................................. 29
6-13. IC Pin Function Description ........................................... 34
7.
7-1. Case Section .................................................................... 37
7-2. Mechanism Deck Section-1 (MG-251B-137) ................ 38
7-3. Mechanism Deck Section-2 (MG-251B-137) ................ 39
7-4. Mechanism Deck Section-3 (MG-251B-137) ................ 40
7-5. Mechanism Deck Section-4 (MG-251B-137) ................ 41
8.
CDX-848X
Ver 1.1 2001.05
.......................... 16
.......................................... 17
............................... 42
3
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