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Specifications ........................................................................... 1
1. SERVICE NOTE ........................................................... 3
2. GENERAL ...................................................................... 4
3. DISASSEMBLY
3-1. ÒCabinet, RearÓ, ÒCabinet Sub ASSY, FrontÓ ............ 6
3-2. Inlet Board, Power Board ........................................... 7
3-3. Battery (R) Board, Battery (L) Board ......................... 7
3-4. Cabinet (Upper) ASSY ............................................... 7
3-5. Switch (1) Board ......................................................... 8
3-6. Mechanism Deck ........................................................ 8
3-7. Line Board .................................................................. 8
3-8. Tuner Board ................................................................ 8
3-9. CD Block ASSY ......................................................... 9
3-10. Headphone Board ..................................................... 9
3-11. Switch (2) Board, LCD Board, Lamp Board .......... 10
3-12. Main Board, CD/System Board .............................. 10
3-13. CD Block Section .................................................... 11
3-14. TC RF Board, Head Relay Board,
Belt (FR/BR), Motor (M691) .................................. 11
3-15. Tray ASSY, CD ....................................................... 12
3-16. Loading Board ........................................................ 12
3-17. Optical Pick-up Block, Pick-up Relay Board ......... 12
4. TEST MODE ................................................................ 13
TABLE OF CONTENTS
5. ADJUSTMENTS
5-1. Mechanical Adjustmens ............................................ 14
5-2. Electrical Adjustments .............................................. 14
6. DIAGRAMS
6-1. Explanation of IC Terminals ..................................... 18
6-2. Block Diagrams (Tape, Main Section) ..................... 20
6-3. Block Diagrams (Tuner, CD Section) ....................... 23
6-4. Printed Wiring Boards (Main Section) ..................... 27
6-5. Schematic Diagram (Main Section) ......................... 31
6-6. Printed Wiring Boards (CD/System Section) ........... 36
6-7. Schematic Diagram (CD/System Section) ............... 41
6-8. Printed Wiring Boards (Tuner Section) .................... 46
6-9. Schematic Diagram (Tuner Section) ........................ 48
7. EXPLODED VIEWS
7-1. Rear Cabinet Section ................................................ 56
7-2. Front Cabinet Section ............................................... 57
7-3. CD Block Section ..................................................... 58
7-4. Mechanism Deck Section -1 ..................................... 59
7-5. Mechanism Deck Section -2 ..................................... 60
7-6. CD Section ................................................................ 61
7-7. Optical Pick-up Section ............................................ 62
8. ELECTRICAL PARTS LIST ................................... 63
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 commander :
3 V DC, 2 R6 (size AA) batteries
Power consumption
AC 27 W
Battery life
For personal audio systemFM recording
Sony R20P : approx. 6 hSony alkaline LR20 : approx. 12 hTape playback
Sony R20P : approx. 3 hSony alkaline LR20 : approx. 6 hCD playback
Sony R20P : approx. 1.5 hSony alkaline LR20 : approx. 3hDimensions (incl. projecting parts)
Approx. 435 x 223 x 160 mm (w / h / d)
(17
1/4 x 8 7/8 x 6 1/8 inches)
Mass (incl. batteries)
approx. 4.3 kg (9 lb. 7 oz)
Supplied accessories
AC power cord (1)
Remote commander (1)
Plug adaptor (1) (UK)
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 lid for CD.
2. Press CD ^ 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
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.
Flexible Circuit Board Repairing
¥ Keep the temperature of the 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.
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.
