Sony cfs 205 service manual

Page 1

(IFS-205

US Model
AEP Model

SERVICE MANUAL

This photo is AEP model and black type

Model Name Using Similar Mechanism CFS-204
Tape Trasport Mechanism Type MF»204-64
SPECIFICATIONS
Frequency range US model : FM 87.6-108MH1 Battery life
AM 530-1,710kHz Batteries FM recording
AEP model : FM 87.6-107MH1

Recording system
Frequency response
Speakers

Power output

Output
Power requirements

Power consumption

.!'-
I I

MICHOFILM

AM 531 -l,602kHz
4-track Zchannel stereo
MHz-10.0mm:

Full-range: 10cm (4 inches) dia.X2
4.6W (2.3W+2.3W)

(at 10% harmonic distortion) at DC
operation

Headphones iack (stereo miniiack) for
16-68 ohm impedance

US model : 120V AC, 60Hz

AEP model : 220-230V AC, 50Hz
9V DC. six R14 (size C) batteries
14W

Sony SUM-2 (NS)

Approx. 4 hours

Sony AM2 alkaline

Approx. 8 hours

Dimensions

Weig ht
Accessory supplied

Approx. 460x145 X 160mm (w/h/d)
(18/. X 59/. X6/. inches)
incl. projecting parts and controls

Approx 2.6kg (5 lb 12 oz), incl. batteries

AC power cord (1)

Design and specifications subiect to change without notice

RAlllll CASSETTE-BORDER
S O N 'Y.

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(IFS-205 I

SAFETY CHECK-OUT

After correcting the original service problem,
perform the following safety check 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 described below.

LEAKAGE TEST

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 microampers). Leakage
current can be measured by any one of three
methods.

1. A commercial leakage tester, such as the
Simpson 229 or RCA WT-540A. Follow the
manufacturers instructions to use these instru-
merits.

to

A battery-operated AC milliammeter. The Data
Precision 245 digital multimeter is suitable for
this job.

3. Measuring the voltage drop across a resistor by
means of a VOM or battery-operated AC volt»
meter. The limit" indication is 0.75V, 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
multimeter: that have a 2V AC range are
suitable. (See Fig. A)

To Exposed Metal
Parts on Set

. AC
0.15uF 1.5 km / voltmeter
[0.75 VI

¥ Earth Ground

Fig. A. Using an AC voltmeter to check AC leakage.

SA FETY-RE LATED COMPONENT WARNING !!

COMPONENTS IDENTIFIED BY MARK A OR DOTTED
LINE WITH MARK A 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 PUB-
LISHED BY SONY.

TABLE OF CONTENTS
LCM M Egg

1. DISASSEMBLY

l-l. Removal of Cassette Holder .................... 3

1-2. Dial Pointer Setting ............................ 3
2. MECHANICAL ADJUSTMENTS .................... 4
3. ELECTRICAL ADJUSTMENTS

3-1. Tape Recorder Section ........................ 4

3-2. Tuner Section .................................. 5
4. DIAGRAMS

4-1. Printed Wiring Boards -Audio Section- ........ 7

4-2. Schematic Diagram -Audio Section~ .......... 9

4-3. Semiconductor Lead Layouts
4-4. Printed Wiring Board -Tuner Section-

4-5. Schematic Diagram -Tuner Section- .......... l3
5. EXPLODED VIEWS

5-1. Front Cabinet Section ........................ 15

5-2. Rear Cabinet Section .......................... 16

5-3. Tape Mechanism (1) Section .................. 17

5-4. Tape Mechanism (2) Section .................. 18
6. ELECTRICAL PARTS LIST ...................... 19

MODEL IDENTIFICATION
- Model Number Portion -

US model : Carved on rear cabinet
AEP model: Model number label

SONE;

MODEL NO. (IFS-205
RADIO CASSETTE-CORDER

I:

US model : AC: 120V 60Hz 14W
AEP model: AC: 220- 230 V~50 Hz 14W