CD RADIO CASSETTE-CORDER
CD Mechanism Type
Optical Pick-up Type
Tape Transport Mechanism Type
Model Name Using · Similar Mechanism
CD player section
Compact disc digital audio system
Laser diode properties
Emission duration : Continuous
Laser output : Less than 44.6 µW
(This output is the value measured at a
distance of about 200 mm from the objective
lens surface on the optical pick-up block
with 7 mm aperture.)
200 r/min (rpm) to 500 r/min (rpm) (CLV)
Number of channels
20 20,000 Hz + 1/-2 dB
Wow and flutter
Below measurable limit
87.5 108 MHz
87.6 107 MHz
526.5 1,606.5 kHz
531 1,602 kHz
148.5 283.5 kHz
153 279 kHz
FM : 10.7 MHz
AM/MW/LW : 455 kHz
FM : Telescopic aerial
AM/MW/LW : Built-in ferrite bar aerial
4 -track 2 channel stereo
Fast winding time
Approx. 120 s (sec.) with Sony cassette C-60
TYPE I (normal) : 70 10,000 Hz
Full range : 10 cm dia., 3.2
, cone type (2)
Headphones jack (stereo minijack)
For 16 68
Maximum power output
2.3 W + 2.3 W
For CD radio cassette-corder :
230 V AC, 50 Hz
9 V DC, 6 R 20 (size D) batteries
AC 20 W
For CD radio cassette-corder:
Sony R20P : approx. 13.5 h
Sony alkaline LR20 : approx. 20 h
Sony R20P : approx. 7.5 h
Sony alkaline LR20 : approx. 15 h
Sony R20P : approx. 2.5 h
Sony alkaline LR20 : approx. 7 h
× 165 × 256 mm (w/h/d)
× 6 1/
× 10 1/
inches) (incl. projecting
Mass (incl. batteries)
Approx. 4.1 kg (9 lb. 1 oz)
AC power cord (1)
Design and specifications are subject to change without notice.
Ver 1.0 1999. 02
-- 2 --
TABLE OF CONTENTS
1. SERVICE NOTES ···························································· 3
2. GENERAL ·········································································· 4
Front Cabinet Assy ····························································· 5
Control Board ····································································· 6
Cabinet (upper) Assy ·························································· 6
Inlet, Power, Battery, Half Battery Board ··························· 7
Main Board ········································································· 7
Mechanism Deck, Optical Pick-up Section ························ 8
4. DIAL, POINTER INSTALLATION ······························ 9
Mechanical Adjustment ···················································· 10
Electrical Adjustment ······················································· 10
Tuner Section ···································································· 11
Reference ·········································································· 15
Circuit Board Location ····················································· 17
Block Diagram ································································· 18
Printed Wiring Board ························································ 21
Schematic Diagram Main Board(1/3) ························ 25
Schematic Diagram Main Board(2/3) ························ 28
Schematic Diagram Main Board(3/3) ························ 31
IC Pin Function Description ············································· 33
7. EXPLODED VIEWS ················································· 38
8. ELECTRICAL PARTS LIST ··································· 44
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK
! OR DOTTED LINE WITH
! 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.
Check the area of your repair for unsoldered or poorly-soldered
connections. Check the entire board surface for solder splashes
Check the interboard wiring to ensure that no wires are
"pinched" or contact high-wattage resistors.
Look for unauthorized replacement parts, particularly
transistors, that were installed during a previous repair. Point
them out to the customer and recommend their replacement.
Look for parts which, through functioning, show obvious signs
of deterioration. Point them out to the customer and
recommend their replacement.
Check the B+ voltage to see it is at the values specified.
Flexible Circuit Board Repairing
· Keep the temperature of the soldering iron around 270°C
· 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
After correcting the original service problem, perform the following
safety checks before releasing the set to the customer.
-- 3 --
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
The flexible board is easily damaged and should be handled with
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,
observe from more than 30 cm away from the objective lens.
CHUCK PLATE JIG ON REPAIRING
On repairing CD section, playing a disc without the CD lid, use
Chuck Plate Jig.
· Code number of Chuck Plate Jig : X-4918-255-1
LASER DIODE AND FOCUS SEARCH OPERATION
1. Press CD open knob.
2. Open the lid for CD.
3. Push on SWITCH (S801) as following figure.
4. 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.
This appliance is classified as a CLASS 1 LASER product. The
CLASS 1 LASER PRODUCT MARKING is located on the rear
The following caution label is located inside the unit.
Laser component in this product is capable
of emitting radiation exceeding the limit for
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation
Insert a precision screw driver
and push SWITCH(S801)
-- 4 --
LOCATION AND FUNCTION OF CONTROLS
Tape operation buttons
FM rod antenna
DISPLAY ENTER button
6 PUSH OPEN/CLOSE button
2 Phones jack
MEGA BASS knob
AC IN jack
PLAY MODE button
-- 5 --
Follow the disassembly procedure in the numerical order given.
· The equipment can be removed using the following procedure.
FRONT CABINET ASSY
Mechanism deck, optical pick-up section
Cabinet (upper) assy
Front cabinet assy
Inlet, power, battery, half battery board
0 Front cabinet assy
Rear cabinet assy
1 Lid battery case
4 Three screws
6 Open the CD lid in
the direction of the arrow.
2 Three screws
5 Remove the Handle
in the direction of the arrow.
8 Vol knob
9 Tone knob