Sony cfs 219 service manual

Page 1

BIS-219

" SERVICE MANUAL us Mode,

Model Name Using Similar Mechanism CFS-209
Tape Transport Mechanism Type MF-209-102

SPECIFICATIONS

AUDIO POWER SPECIFICATIONS

POWER OUTPUT AND TOTAL HARMONIC DISTORTION

With 3.2-ohm loads, both channels driven, from 150 to 10,000 Hz; rated 1.5 W per
channel minimum, RMS power, with no more than 10 % total harmonic distortion in
AC operation.
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Frequency range FM: 87.6-108 MHz Power consumption I4 W in AC operation
AM: 530-] .710 kHz Battery life
Antennas PM: Telescopic antenna . .
AM: Built-i n f e rrit e bar Batteries FM recording Tape playback
Recording system 4-track, 2-channel stereo Sony SUM-1 (N5) APPI'OL 12 hours APPFOX~ 7 WIS
Frequency response 30401300 HZ Sony AMI alkaline Approx. 24 hours Approx. 14 hours
Speakers Two way
10 cm (4 inches) dia. full range x 2 D' - A _ 4 1 147'
2 cm (/16 inches) dia. tweeter x 2 Amensions (xfflg) 23 X 53 x 5 mm
Input CD/LINIE IN jacks (stereo pinjacks) (16 7/3 x 6 I /a x 5 7/5 inches) incl.
(2) ")9! Impedance 47 kilohms, projecting parts and controls,
sWSI'IV'II (14.4 V , 0 not incl. handle
Output Headphones lack (stereo minnack) Mass Approx. 2.9 R8 (6 n, 6 oz) incl.
for 16-68 ohm impedance batteries
headphones Iied AC 1
Power output 23 W + 2.3 W (at 32 ohms, IO % Accessory supp power cord ( )
(except for USA) harmonic distortion in DC _ . . _
operation) Design and specifications subject to change Without notice.

Power requirements 120 V AC, 60 Hz
9 V DC, six size D (R 20) batteries

SAFETY-RELATED COMPONENT WARNINGI!
COMPONENTS IDENTIFIED BY MARK A 0R DOTTED

LINE WITH MARK A ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL T0 SAFE RAD T

OPERATION. REPLACE THESE COMPONENTS WITH

SONY PARTS WHOSE PART NUMBERS APPEAR As
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY. ®

Page 2

SAFETY CH EC K-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-54OA. Follow the
manufacturers instructions to use these instru-
ments.

2. 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
multimeters that have 3 2V AC range are
suitable. (See Fig. A)

To Exposed Metal
Parts on Set

A C
voltmeter
(0.75 V}

0.15uF Elfin?
'._J

? Earth Ground

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

SECTION 1
DIAL POINTER SETTING

DIAL POINTER SETTING

direction button

0 BVTP3X14

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0 Set the dial chassis.

0 BVTP3X14

0 Set the pointer to figure position

direction button

po i nter

upper side View

0Turn the tuning knob
fully in the direction
of arrow.