CDX-T70MX (serv.man2) - Sony Car Audio Service Manual (repair manual). Page 5

5

This set can playback a CD-R, CD-RW for audio use. When test
this set, use the following test disc.
Test disc for CD-R: TCD-R082LMT (Part No.: J-2501-063-1)
Test disc for CD-RW: TCD-W082L (Part No.: J-2501-063-2)

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2

Installation .......................................................................

6

Connections .....................................................................

7

2-1. Disassembly Flow ...........................................................

8

2-2. Front Panel (S) Assy, Case (Upper S) ............................

9

2-3. Mechanism Deck (MG-276A-159) ................................

9

2-4. JACK Board .................................................................... 10
2-5. Belt (TS) .......................................................................... 10
2-6. MAIN Board ................................................................... 11
2-7. Escutcheon (S), Slide Variable Resistor

(Elevator Height Sensor) (RV301) ................................. 11

2-8. MD Motor Assy (Elevator) (M104) ................................ 12
2-9. LE Motor Assy (Chucking) (M103) ............................... 12
2-10. RF Board ......................................................................... 13
2-11. Sled Motor Complete Assy (M101) ............................... 13
2-12. Optical Pick-up (KSS-720A) .......................................... 14
2-13. Chassis (EV) Assy ........................................................... 14
2-14. Lever (CHK.L) Assy, Lever (CHK.R) Assy ................... 15
2-15. Chassis (OP) Block Service Assy ................................... 15

.......................... 16

.......................................... 17

5-1. Block Diagram  – SERVO Section – .............................. 18
5-2. Block Diagram  – MAIN Section (1/2) – ....................... 19
5-3. Block Diagram  – MAIN Section (2/2) – ....................... 20
5-4. Note for Printed Wiring Boards and

Schematic Diagrams ....................................................... 21

5-5. Printed Wiring Boards  – RF Board – ............................ 22
5-6. Schematic Diagram  – RF Board – ................................. 23
5-7. Printed Wiring Boards

– MAIN Board (Component Side) – .............................. 24

5-8. Printed Wiring Board

– MAIN Board (Conductor Side) – ................................ 25

5-9. Schematic Diagram  – MAIN Board (1/3) – .................. 26
5-10. Schematic Diagram  – MAIN Board (2/3) – .................. 27
5-11. Schematic Diagram  – MAIN Board (3/3) – .................. 28
5-12. Printed Wiring Boards  – JACK Board – ........................ 30
5-13. Schematic Diagram – JACK Board – ............................. 31
5-14. IC Pin Function Description ........................................... 37

6-1. Case Section .................................................................... 39
6-2. Mechanism Deck Section-1 (MG-276A-159) ................ 40
6-3. Mechanism Deck Section-2 (MG-276A-159) ................ 41

............................... 42

Remove the CASE (LOWER. S) beforehand

1) Press the lever (MZ LOCK) in the direction of arrow A.
2) Removal the magazine assy.

 Take out the magazine only when the tray is completely within the

magazine. If the disk or tray is sticking out, turn on the power and
eject the magazine.

Lever (MZ LOCK) 

Magazine assy

A