Sony cfm 130 service manual

Page 1

stltitICEi/Iilutt

US Model
E Model

Photo: Black type

SPECIFICATIONS

Frequency range FM 816 - 108 MHz

AM 530 -- 1.710 kHz
Antennas FM: Telescopic antenna

AM: Builtin ferrite bar antenna
Recording system 2-track mono
Frequency response 125 - 6,300 Hz

Speaker Approx, 76 cm (3 inches) dia woofer

Power output 0.7 W at 10% harmonic distortion (at DC
operation)

Outputs Earphone jack tor 8-300 ohm impedance
earphone

Power requirements 6 V DC.10ur size 0 (R14P) batteries
120 V AC. 60 Hz

Power consumption 6 W AC

Battery rite
Batteries FM recording
Sony SUM-2(NS) 10 hours
Sony AM-ZtN) alkaline 17 hours
Dimensions Approx1319 x 139 x 93 mm (w/h/d)

(12 5/3 x 5 V2 x 3 3A inches)
incl. projecting parts & controls not incl. handle
Weight Approx, 1.7 kg (3 lb 12 oz) incl, batteries
Accessory supplied AC power cord (1)

Design and specifications subject to change without notice

Model Name Using Similar Mechanism CFM-l40
Tape Transport Mechanism Type MF-130

SAFETY-RELATED COMPONENT WARNING

COMPONENTS IDENTIFIED BV 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 5! SONY.

RADIfl CASSETTE-BURDER
SONE

Page 2

CFM-13O

SAFETY CH ECK-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 05 mA (500 microampers). Leakage
current can be measured by any one of three
methods.

I. A commercial leakage tester, such as the
Simpson 229 or RCA WT-540A. 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 0.75 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 2 V AC range are
suitable. (See Fig. A)

To Exposed Metal
Part: on Set

AC
awn/=1 1.5m / voltmeter

{0. 75 V}
._l

'7' Earth Ground

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

SECTION 1
GENERAL

LOCATION OF CONTROLS

a

murky»

WV

. FUNCTION SELECTOR

(TAPE(RAD|O OFF)/RAD|O(FM/AM))

. TUNING control

V0 LUM E control

. EARPHONE
. MIC (built-in)
. Tape operation buttons

II PAUSE

I STOP/EJECT

<4 FF (fast-forward)
>> REW (rewind)

4 PLAY (playback)
o REC (record)

. OPR/BATT (operation/battery check) indicator
. ISS (interference suppress switch)
. AC IN socket