Sony cfs 904 l service manual
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Page 1
SERVICE MANUAL
[IFS-90M
East European Model
MEGAMSS
SPECIFICATIONS
Tuner frequency range
FM MW LW SW
65~ 531 v 153-- 5.95-
108MH2 1602kHz 279kHz l8MHz
Frequency response 80Hz-10,000Hz
Speakers 10cm (4m) dia. lull rangeXZ
Model Name Using Similar Mechanism CFS-ZO4L
Tape Transport Mechanism Type
MF-204~64
Outputs Headphones jack (stereo miniiack) for 8-3000hm
impedance headphones
Maxnmum power output 4.0W (2.0W+2.0W)
Power requirements
220-230V AC, 50Hz
9V DC, six R14 (size C) batteries
DC IN 9V jack accepts: AC power adaptor (supplied)
DCCEXQOL car battery cord (not supplied) for use with
12V car battery
Battery life Batteries FM recording
Playing
Sony SUM~2(NS) Approx. llhours
Approx. hours
Sony AM2 alkaline Approx. 23hours
Approx. 30hours
Dimensions Approx 470x150><154mm (w/h/d)
(185/3 X6X6/flinches)inol. projecting parts and con-
trols
Weight Approx. 26kg (SI!) 1202) incl. batteries
Accessory supplied
Design and specifications subject to change Without notice
AC power adaptor (AC»E905) (1)
RADIII CASSETTE-BORDER
SONY.»
Page 2
TABLE OF CONTENTS
Section Title Page
1. GENERAL
1-]. Parts Identification .......................... 3
2. DISASSEMBLY
2-]. Removal of Cassette Lid ........................ 4
2-2. Removal of Front Cabinet ........................ 4
2-3. Dial Pointer Setting .............................. 5
3. MECHANICAL ADJUSTMENTS .................. 5
4. ELECTRICAL ADJUSTMENTS
4-1. Tape Recorder Section .......................... 6
4-2 Tuner Section .................................... 6
5. DIAGRAMS
5-1. Printed Wiring Board-Tuner Section- .......... 8
5-2 Schematic DiagramiTuner Sectioni ............ 9
5-3. Printed Wiring Boards-Audio Sectioni ........ 11
5-4. Schematic Diagram-Audio Section- ............ 13
5-5. Semiconductor Lead Layouts .................... 15
6. EXPLODED VIEWS
6-1, Front Cabinet Section .......................... 16
62. Rear Cabinet Section ............................ 17
6-3. Tape Mechanism Section (1) .................... 18
6-4. Tape Mechanism Section (2) .................... 19
7. ELECTRICAL PARTS LIST ...................... 20
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
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB»
LISHED BY SONY.