Sony cfs w 900 service manual

Page 1

SERVICE MANIIAL

Tuner sec on

System

SPECIFICATIONS Tape Transport Deck-A: MF-w900PB-73

FM stereo, FM/AM superheterodyne

tuner

FM tuner section

Tuning range

87.6 -108 MHZ

Antenna Telescopic antenna/FM EXT ANT
MW tuner section
MW
Tuning
range 530-1,605 kHz
Antenna Built-in ferrite bar antenna / MW EXT ANT

SW tuner section
SW1 SW2 SW3 SW4 SW5
Tuning 5.95- 9.5- 11.7- 151 17.6-
range 6.2MHZ 9.8MHZ 120MHz 15.5MHZ 18.0MHZ
Antenna Telescopic antenna l SW EXT ANT

SAFETY-RELATED COMPONENT WARNINGI!

COMPONENTS IDENTIFIED BY SHADING AND 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 PUBLISHED BY SONY.

Mechanism Type Deck-B: MF-W900RP-73

Cassette deck section

Recording system 4-track 2-channel stereo
Frequency response
DOLBY NR OFF
With TYPE IV cassette (Sony METAL-
ES cassette)
40-16,000 Hz
With TYPE |I cassette (Sony UCX
cassette)
40-15900 Hz
With TYPE I cassette (Sony HF-S
cassette)
40-14,000 HZ

- Continued on page 2 -

FM/MW/SWi-5
STEREIJ CASSETIE-CIIRDER

SONYE

Page 2

CFS-W9OO

Amplifier section

Continuous RMS power output
22W + 22W (8 ohms, at 1 kHz, at 10%
harmonic distortion) at ac operation
12W + 12W (at 10% harmonic distortion)
at dc operation

Battery life
Batteries Tape Playback FM recording
Sony New Super .
SUM-1 (NS) 50 (min) 2.5
Sony Eveready
AM1 alkaline 1 45
(hours)
Inputs
Sensitivity Impedance
CD/AUX (phono jacks) 440 mV 47 kilohms
PHONO (phono lacks) 4 mV 47 kilohms
MIX MIC (phone jack) 2.5 mV 3.3kilohms
Outputs
HEADPHONES Accepts headphones of 8-32 ohms
SPEAKER Accept speakers of 3-16 ohms
LINE OUT level/Impedance 250 mV/47 kilohms

Power requirements
110, 120, 220 or 240V ac adjustable
12V dc, ten batteries IEC designation
R20 (size D)
DC IN 12V jack accepts:
Sony DCC-16AE car battery cord
(optional) for use on 12V car battery

Speaker section

Speaker system 3-way speaker system
77 cm APM woofer, flat type
5cm dla. tweeter, cone type
1.5 cm dia supert weeter, cone type
Power handling capacity
Music 40 watts
Nominal 20 watts

Frequency range 50 Hz-20.000 Hz
Impedance 8 ohms
Dimensions Approx. 140><221><184mm (th/d)
(43/. X8 X 7/. Inches)
Weight Approx. 1.5 kg (3 lbs 5 02.) net per unit

Power consumption
50 watts

Dimensions Approx. 620><276><261 mm (w/hld)
Incl. projecting parts and controls
Weight Approx. 10kg not incl, batteries

0 dB = 0.775 V

FEATURES

0 The CFS-WQOD is a compact high-density stereo
double cassette~corder combined with FMIMW/SWH
7 band tuner.

0 Total 44 watts power output (22 W+22 W, at 10% har-

monic distortion) under ac operation.

Synchro dubbing function for tape-to-tape dubbing at

normal or high speed.

Includes a 5-band graphic equalizer for fine adjust-

ment of tone quality for both recording and playback,

and a 5-band spectrum analyzer.

Dolby NR (noise reduction system) reduces tape hiss

noise.

Auto-reverse recording and playback.

Automatic tape selector (ATS) automatically sets the

optimum bias current and equalization characteris-

tics.

o Three»way speaker system with an APM (Accurate

Pistonlc Motion) woofer provides dynamic sound.

AMS (Automatic music sensor) allows you to locate

the beginning of the desired selection easily.

Mixing microphone jack.

Direct start function allows relay playback from deck

A to deck B and synchro dubbing by simply depres-

sing a button.

Tape-control drawer for manual playback and re-

cording.

O