CD RADIO CASSETTE-CORDER
Model Name Using · Similar Mechanism
CD Mechanism Type
Optical Pick-up Type
Tape Transport Mechanism Type
Personal Audio Group
Published by Sony Engineering Corporation
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC DISTORTION
loads, both channels driven from 150 10,000 Hz; rated 1.8
W per channel-minimum RMS power, with no more than 10 % total
harmonic distortion in AC operation.
CD player section
Compact disc digital audio system
Laser diode properties
Emission duration : Continuous
Laser output : Less than 44.6
(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
FM : 87.6 108 MHz
AM : 530 1,605 kHz (Australian model)
AM : 530 1,710 kHz (Others models)
FM : Telescopic antenna
AM : 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
Power output (excluding US model)
2.3 W + 2.3 W (at 3.2
, 10 % harmonic
For CD radio cassette-corder :
120V AC, 60 Hz
9V DC, 6 size D (R 20) batteries
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
Approx. 4.1 kg (9 lb. 1 oz) (incl. batteries)
AC power cord (1)
Design and specifications are subject to change without notice.
Ver. 1.4 2005.09
-- 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 Section(1/2) ······················ 25
Schematic Diagram Main Section(2/2) ······················ 30
Explanation of IC Terminals ············································ 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.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFÉS PAR UNE MARQUE
! SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.
After correcting the original service problem, perform the following
safety checks before releasing the set to the customer:
Check the antenna terminals, metal trim, "metallized" knobs, screws,
and all other exposed metal parts for AC leakage. Check leakage as
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes).
Leakage current can be measured by any one of three methods.
A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers' instructions to use these
A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The "limit" indication
is 0.75 V, so analog meters must have an accurate low-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples of
a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2V AC range are suitable. (See
To Exposed Metal
Parts on Set
Fig. A. Using an AC voltmeter to check AC leakage.
-- 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 Socket
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
3 Four screws
6 Open the Lid (CD) in
the direction of the arrow.
2 Two screws
5 Remove the Handle
in the direction of the arrow.
8 Knob (Vol )
9 Knob (Tone)