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Specifications ........................................................................... 1
1. SERVICE NOTE ........................................................... 3
2. GENERAL ...................................................................... 4
3. DISASSEMBLY
3-1. Cabinet Rear ASSY, Cabinet Front ASSY ................ 6
3-2. Power Board, P/T In Board, P/T Out Board,
BATT S Board ........................................................... 7
3-3. Tuner Board .............................................................. 7
3-4. Jack Board ................................................................. 7
3-5. Audio Board .............................................................. 8
3-6. CD Board .................................................................. 8
3-7. TC Board ................................................................... 9
3-8. Cabinet Top ASSY .................................................... 9
3-9. H/P Board ................................................................ 10
3-10. TC/M Board ............................................................ 10
3-11. MD Block ASSY ...................................................... 11
3-12. TC LED (L) Board, TC LED (R) Board,
TC Key Board .......................................................... 11
3-13. TC RF Board, Head Relay Board, Belt FR,
Belt BR, Capstan/Reel Motor (M691) .................... 12
3-14. CD Chassis ASSY ................................................... 12
3-15. CD Block Section ................................................... 13
3-16. Loading Board ........................................................ 13
3-17. Tray ASSY, CD ................................................... 14
3-18. Optical Pick-up Block, Pick-up Relay Board ......... 14
3-19. Panel DECO ASSY ................................................ 15
3-20. Control Board, JOG LED1 Board,
JOG LED2 Board .................................................... 15
3-21. Key Board ............................................................... 16
TABLE OF CONTENTS
3-22. BATT Board ........................................................... 16
4. TEST MODE ................................................................ 17
5. ADJUSTMENTS
5-1. Mechanical Adjustmens ............................................ 18
5-2. Electrical Adjustments .............................................. 19
6. DIAGRAMS
6-1. Explanation of IC Terminals ................................... 22
6-2. Block Diagrams (Tape, Main Section) ................... 24
6-3. Block Diagrams (Tuner, CD Section) .................... 27
6-4. Printed Wiring Boards (Main Section) ................... 31
6-5. Schematic Diagram (Main Section) ....................... 35
6-6. Schematic Diagram (CD Section) .......................... 39
6-7. Printed Wiring Boards (CD Section) ...................... 43
6-8. Printed Wiring Boards (Contorl Section) ............... 45
6-9. Schematic Diagram (Control Section) .................... 47
6-10. Printed Wiring Boards (Tuner Section) .................. 51
6-11. Schematic Diagram (Tuner Section) ...................... 52
7. EXPLODED VIEWS
7-1. Rear Cabinet Section ................................................ 60
7-2. Front Cabinet Section ............................................... 61
7-3. CD Block Section ..................................................... 62
7-4. Top Cabinet Section .................................................. 63
7-5. Mechanism Deck Section (1/2) ................................ 64
7-6. Mechanism Deck Section (2/2) ............................... 65
7-7. CD Section ................................................................ 66
7-8. Optical Pick-up Section ............................................ 67
8. ELECTRICAL PARTS LIST ................................... 68
Power requirements
For personal audio system:
230V AC, 50 Hz
12 V DC, 8 R20 (size D) batteries
For memory back-up:
6 V DC, 4 R6 (size AA) batteries
For remote control:
3 V DC, 2 R6 (size AA) batteries
Power consumption
AC 20 W
Battery life
For personal audio system
FM recording
Sony R20P: approx. 6 h
Sony alkaline LR20: approx. 12 h
Tape playback
Sony R20P: approx. 3 h
Sony alkaline LR20: approx. 6 h
CD playback
Sony R20P: approx. 1.5 h
Sony alkaline LR20: approx. 3 hDimensions (incl. projecting parts)
Approx. 486 x 244 x 177 mm (w/h/d)
(17
1-10 x 9 3-5 x 6 9-10 inches)
Mass (incl. batteries)
Approx. 6.2 kg (13 lb. 11 oz)
Supplied accessories
Mainns Lead (1)
Remote control (1)
Design and specifications are subject to change without notice.
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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 more than 30 cm away from the objective lens.LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
1. Close the tray for CD.
2. Press CD u button.
3. Confirm the laser diode emission while observing the objecting
lens. When there is no emission, Auto Power Control circuit or
Optical Pick-up is broken.
Objective lens moves up and down once for the focus search.
CAUTION DURING WHEN MOUNTING THE PULLEY
FOR THE LOADING MOTOR
Make the following adjustment when mounting the loading motor
(part number : 1-698-999-11) and motor pulley (part number : 2-
627-174-01) of the CD section.
Specification : A = 0.9 to 1.1mm
SECTION 1
SERVICE NOTE
