Sony cfs 1040 service manual

Page 1

CFS-1040

SERVICE MANUAL US Model

Austral/an Model
Ital/an Model
E Model

Model Name Using Similar Mechanism CFO-58
Tape Transport Mechanism Type MFalO40-102
SPECIFICATIONS
- - Outputs Headphones jack (stereo miniiack) lor
AUdIO Power Specrflcatlons 16-68 ohms impedance headphones
Speaker Iermlnals for supplied 32 ohms
POWER OUTPUT AND TOTAL HARMONIC Impedance speaker
. Power requirements Australian model: 240 V AC, 50 Hz
DI_STORT'ON . US, E Model: 120V AC. son
With 3.2 ohm loads, both channels driven, ItaliancModelfizoézaov Ac. so Hz
. 9 V D , six size (R20) batteries
from 150492000 HZ rated 1'5 watts per Power consumption Australian model: 20 W in AC operation
channel minimum RMS power, wrth no usual Mode|:12 w in AC operation
more than 10% total harmonic distortion Battery We games FM momma Tape payback
in AC Operation. (US MOdel) Sony sum (NS) Approx, i2 hours Approx.6hours
Sony AMAl alkaline Approx 27 hours Approx. 16 hours
. . . Dimensions Approx, 537 x 195 X 190 mm (wlhld)
Other Specifications (21, 7% x 71/2 inches)
incl. projecting parts and controls, not inclr
Frequency range FM: 87.6-108 MHz handle
Us:Austmififl-AEDAMWBI1?;468521370ml Weight Approx. 4.3 kg (9 lb 8 oz) inclr batteries
Intermediatetreqency 23:: $33514 5265' Z Accessory supplied AC power cord (1)
AM 455 kHz . . V V _ .
Antennas FM: Telescopic antenna Design and specrlicatrons subiect to change Without notice.

AM: Built-in ferrite bar
Frequency response 100-10900 Hz
Speakers Two way: tweeter 2 cm ("/u, in.) dia.
woofer 10 cm (4 in.) dia.
Impedance: 32 ohms

Power output 2.3 W + 23 W (at 10% harmonic

(except for us distortion in DC operation)

model)

Inputs Mixing microphone (MIX MIC) input jack
(minijack) (1)

Sensitivity 3 mV for low impedance

microphone

CDILlNE IN jacks (stereo phone) (2) RADI CA ETTE RDER
Input impedance 47 kilohms I

Sensitivity 0.24 V

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TABLE OF CONTENTS

Section Title Page
Specifications ............................................................. 1
1. GENERAL

Location and Function of Controls" 3

Tape Playback ~ ~4

Listening to the Radio .4

Recording S

Microphone Mixing 5

Listening to or Recording from Various Sources 5
2. DISASSEMBLY ..................................................... 6
3. DIAL POINTER INSTLLATION ------------------------------- 8
4_ BLOCK DIAGRAM ................................................. 9
5_ ADJUSTMENTS ................................................. 11
6. DIAGRAMS

6.1, Circuit Boards Location ...................................... 15
6-2. Printed Wiring Boards - ..
6-3. Schematic Diagram ----

7. EXPLODED VIEWS .............................................. 25

8. ELECTRICAL PARTS LIST ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 30

MODEL IDENTIFICATION
~ Model Number Label -

SONY.
MODEL NO CPS-1040

RADIO CASSETTE -CORDER

US, E Model : AC 120V ~ 60Hz
Australian Model : AC 240V ~ 50Hz
Italian Model : AC 220V-230V ~50Hz

SAFETY CHECK-OUT (US Model)

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 WTv54OA. 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 2V AC range are
suitable. (See Fig A)

To Exposed Metal
Part: on Set

AC
0.15M gum / voltmeter
(0.751

'5? Earth Ground

F ig. A. Using an AC voltmeter to check AC leakage.

SAFETY-RELATED COMPONENT WARNING

COMPONENTS IDENTIFIED BV MARK A 0R DOTTED
LINE WITH MARK A ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATIONT REPLACE THESE COMPONENTS WITH
SONV PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.