Sony CFS-903L User manual

SERVICE MANUAL ree
UK Model
Tuner frequency range FM: 87.6—107MHz
\F
Frequency response
Speakers
Outputs
SPECIFICATIONS
Model Name Using Similar Mechanism| CFS-W401L
Tape Transport Mechanism Type MF-903-78D
MW: 531 —1,602kHz
LW: 153—281kHz
SW: 5.95—18MHz
10.7MHz (FM), 455kHz (MW)
80Hz—10,000Hz
10cm (4 in.) dia.. full range x2
Headphones jack (stereo minijack) for 8—3000hm
impedance headphones
Maximum power output
Power requirements
Battery life
Dimensions
Weight
Accessory supplied
Note:
4.4W (2.2W + 2.2W)
9V OC, six R14 (size C) batteries
DC IN 9V jack accepts: AC power adaptor (supplied) DO NOT IMMERSE IN WATER
Power requirements (supplied AC power adaptor) © Before opening or shutting the cassette holder or battery
UK model: 240V AC, 50Hz compartment lid, be sure to wipe off water, dust or sand on
AEP model: 220V AC, 50Hz _ ; the outside of the unit.
ee be Eeryreore toprlonel) tar-cle aie 5 Water lt the headphones jack may cause rusting. Cover the
jack with the attached rubber cap when the headphones are
Batteries FM recording
Sony SUM-2 (NS) Approx. 7.5 hours not used. :
Sony AM2 alkaline Approx. 27 hours ° If the unit is splashed with salt water wipe clean with a damp
Approx, 440 x 202x 128mm (w/h/d) cloth, then dry with a soft dry cloth. Do NOT wash under run-
(17 3/8x8x5 1/8 inches) incl. projecting parts and ning water; do NOT use soap or detergent: do NOT dry with
controls an electric hair dryer.
Approx, 2.65kg (5 Ib 1302) incl. batteries ¢ The supplied AC power adaptor is not water resistant. To
AC power adaptor (1) prevent shock hazard, avoid using the set near water during
AC operation.
This appliance conforms with EEC Directives 76/889 and
82/499 regarding interference suppression,
Design and specifications subject to change without notice.
MICROFILM
RADIO CASSETTE-CORDER
ON
Y.

‘CFS-903L
TABLE OF CONTENTS
Section
Title
Page
Specifications
ee
rem
ee
et
ee
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Do
Not
Immerse
in
Water
-ccccecr
ttt
1
SECTION
1.
GENERAL
Parts
Identification
ssc
crr
ttt
ttt
2
SECTION
2.
DISASSEMBLY
-------+*ccc
crt
3
SECTION
3.
MECHANICAL
ADJUSTMENTS:
*°***~
eid
SECTION
4.
ELECTRICAL
ADJUSTMENTS
--------
4
SECTION
5.
DIAGRAMS
5-1.
Semiconductor
Lead
Layouts
----++*+*7
"
7
5-2.
Schematic
Diagram
(Tuner
Section)
---------:
7
5-3.
Schematic
Diagram
(AUDIO
Section)
----+-+*-°-
9
5-4.
Printed
Wiring
Boards
---*+crcct
tert
11
SECTION
6.
EXPLODED
VIEWS---++ssec
cect:
13
SECTION
7.
ELECTRICAL
PARTS
LIST
----***°-
18
SECTION
1
GENERAL
[PARTS IDENTIFICATION]
FUNCTION selector
FM telescopic antenna
Tape operation buttons
BAND selector
TONE control
OPR/BATT indicator
VOLUME control
FINE TUNING knob
TUNING knob
DC iN 9V jack
PHONES
jack
Cassette
holder
SAFETY-RELATED
COMPONENT
WARNING!!
COMPONENTS
IDENTIFIED
BY
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
BY
SONY.

SECTION 2
DISASSEMBLY
Note: Follow the disassembly procedure in the numerical order given.
FRONT CABINET ASSEMBLY jonaie
HANDLE ASSEMBLY
TUNING KNOB
@ Remove the
two hooks,
handle
TEX hook
Tew
screwdriver
NS
aN
2
ROR
Se
DB BE co) ‘
dial pointer
DIAL POINTER SETTING
Orturn the tuning shaft fully counterclockwise.
Oset the left side of the dial pointer to the scratched
life on the tuning chassis. (Arrow
scratched
line
ao:
= "@
tuning
chassis
@ +BVTP3 x 20
@ +BVTPS x 20 (5 pes.)
@ side panel (right
@ +RKTP3 x8
two portions:
There is the same part
on the opposite side.
@ tuning chassis
)
@ +BVTP3 x 12
assembly
tuning shaft
jae Meat a
SECTION 3
MECHANICAL ADJUSTMENTS
PRECAUTION
Clean the following parts with a denatured-alcohol-
moistened swab:
record/playback head pinch roller
erase head rubber belts
capstan idlers
Demagnetize the record/playback head with a head
demagnetizer. (Do not bring the head demagnetizer close
to the erase head.)
Do not use a magnetized screwdriver for the adjustments.
After the adjustments, apply suitable locking compound to
the parts adjusted.
The adjustments should be performed with the rated
power supply voltage unless otherwise noted.
Power supply voltage: 9V dc.
Torque Measurement
Torque meter
Meter reading
30 —75 g-cm
0.42 — 1.04 oz-inch
CQ-102C ( 0z-inch)
FWD 2-6 g-cm
back tension (0.03 — 0.08 oz-inch)
30 ~— 75 g-cm
(0.42 — 1.04 oz-inch)
CQ-102RB -
REV 2-6 g-cm
back tension (0.03 — 0.08 oz:inch)
60 —130g-cm
C08 (0.83 — 1.81 oz-inch)
Tape Tension Measurement
Tension meter Meter reading
CQ403A more than 90 g
CQ-403R (more than 3.18 02)
Head Height Adjustment
1. Install a mirror cassette.
(CQ-009C: Part No. 8-909-708-01)
2. In record mode and viewing from the front, ad-
just the head height to eliminate tape curl and
tape twist at portions of arrow.
3. Perform this adjustment in both FWD and REV
modes.
“Sree
erase head record/playback
head
Low
z= |2
3-573~-138-01 (t=0. 1)
a
3-573-138-11. (t=0. 2)
Shim, head height adjustment
C
AN
{
SECTION 4
ELECTRICAL ADJUSTMENTS
3-1. TAPE RECODER SECTION
eTest Tape
ee
WS.-48A 3kHz, 0dB tape speed adjustment
P-4-A063 6.3kHz, —30dB head azimuth adjustment
REC/PB Head Azimuth Adjustment
Perform adjustment in both FWD and REV modes.
After adjustment, confirm the specification
in FWD mode.
Procedure:
1. Mode: playback
test tape
P-4-A063
(6.3kHz, —10dB)
320
Headphones jack
2. Turn the adjustment screw for the maximum output
levels. If these levels do not match. turn the adjustment
screw until both of output levels match together within
3dB,
Fe within
Output 308
level
R-CH
screw peak
position L-CH R-CH angle
peak peak
3. Phase Check
Mode: playback
test tape
P.4-A063 oscilloscope
(6.3kHz, — 10d)
320
in phase - 45°
REV FWD
a OM

3-2. RADIO SECTION
AM SECTION
Procedure: Setting:
Mode: playback FUNCTION switch: AM (MW/LW/SW)
Tape Speed Adjustment
speed checker
LFM-30 FINE TUING: mechanical mid
or AM ff signal
digital frequency generator
test.
tape
sounter
Put
the
lead-wire
WS-48A
antenna
close
to
(3kHz,
OdB)
pe
the
set.
322 oO
a Pe |
Headphones jack
CS ed
30% amplitude
modulation by
400Hz_ signal
VIVM
(range: 0.5-5V ac)
Adjustment Value:
+3% 2,910 to 3,090 Hz
Frequency difference between the beginning and the end of
the tape should be within 1.5% (45Hz).
Headphones jack
¢ Repeat the procedures in each adjustment several times, and
the frequency coverage and tracking adjustments should be
finally done by the trimmer capacitors.
Adjustment Location: AM IF ADJUSTMENT
Adjust for a maximum reading on VTVM.
adjustment resistor
M301
LS:MW FREQUENCY COVERAGE
Adjust for a maximum reading on VIVM.
160kHz 260kHz L7:LW FREQUENCY COVERAGE
L8:SW TRACKING
*
7MHz
*: Extend telescopic antenna
fully.
FM SECTION
Setting: VCO Adjustment
FUNCTION switch: FM
FM ft signal Procedure:
generator
. FM ff signal
telescopic generator
antenna
400Hz, 30% FM modulation
frequency deviation +22.5kHz
output level: as low as possible
Carrier frequency: 98MHz telescopic
Modulation : no modulation antenna lead
Output level: 0.1V (100dB)
1. Connect frequency counter to TP (VCO).
2. Tune the set to 98MHz.
3. Adjust RV1 for 76kHz+500Hz reading on the frequency
counter.
Adjustment Location: tuner board (component side)
frequency counter
r-CT6:SW FREQUENCY COVERAGE
CT7:LW FREQUENCY COVERAGE
TI:AM IF °
Li:FM TRACKING
L2:FM FREQUENCY COVERAGE
CT2:FM FREQUENCY COVERAGE
A [o]
» a. @
| &
L3:MW TRACKING
CT1:FM TRACKING
RV1:FM VCO
CT10:LW TRACKING
L10:LW TRACKING
CT3:MW TRACKING
CT4:MW FREQUENCY COVERAGE

SECTION 5
DIAGRAMS
Note on Schematic Diagram:
@ All capacitors are in uF unless otherwise noted. pF: uur
5OWV or less are not indicated except for electrolytics
and tantalums.
@ All resistors are in Q and ,W ¢ or less unless otherwise
specified.
@ Tota! current is measured with no cassette installed.
@ Power voltage is de 9 V and fed with regulated dc power
supply from external power voltage jack.
e Voltages are dc with respect to ground under no-signal
(detuned) conditions.
RADIO SECTION
no mark: FM
( ): AM
AUDIO SECTION
no mark: PB
( ): REC
(( ): AMS
© Voltages are taken with a VOM (10 MQ/V).
Voltage variations may be noted due to normal produc-
tion tolerances,
@ Signal path.
= :FM XD :PB
xX» : REC
5-1. SEMICONDUCTOR LEAD LAYOUTS
BA338 2SA952
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BA5410
TLR124
tong i
anode cathode
DTA114ES
DTC114ES
DTC143TS
i cathode
t |
&
+ ode
c & =
188119
2S8A733-K
2S8C1815GR
28C2001
28D 1387
1 2 3
5-2, SCHEMATIC DIAGRAM (Tuner Section)
(TUNER BOARD)
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TELESCOPIC
ANTENNA
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C1 CXA1238S
0
aes
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Ie CXAT 2385
Yo
FM/AM FRONT- END.
FM/AM IF AMP. DET
FM STEREO DEMODULATION
IC1
CXAI238S
1a)
MONO: 0.6 (0.6)
St: 10)
\
1.0010}
0.9 (0.9)
"C7 47n 10V
R7 220k
RS 220k
Sl;
270p (p.p)
CV.
13U3) 4
vei [FINE TUNING
2sc2410s\\f) 100k B
DEPENDING ON POSITION
C30 20p CH ~=R20 700 OF NR
MIN: :1,2 (1.2)
Q2 CENTER : 0.6 (0.6)
FINE TUNING MAX +0{0)
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TE aga \N 5
[alee [on + a a © ee ©) Ik x
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RV1
22k
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7 104 50V
R16 22k
C20 R15 10k
KO
4.2 (4.2) es O| ne
g9mA (7mA)
11
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5
6
7
8
9
10
11
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14
15
5-3. SCHEMATIC DIAGRAM (AUDIO Section)
@ See page 7 for Note on Schematic Diagram. cA)
Refer to page 8.
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5-4. PRINTED WIRING BOARDS
ae eee eee ee ee
[ 7 | 8 | 9
Me. eB a te A =
[ECM BOARD]
A i
[TUNER BOARD } [Fie Tame]
c
ANTI
FM
TERR TENNAT ee
v
TANT Lok g
® Semiconductor Location
{TRANSLATION BOARD]
Ref. No. | Location . | Location
t
1
t
Location
{ AUDIO BOARD }
Note:
@ o——: parts extracted from the component side. -
3301
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[Fa MODE] ,
1SS :
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9302
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BATTERY
ov
ORY BATTERIES
SIZE "0"
(ICE DESIGNATION R20)
6PCS.
M301
REEL /CAPSTAN
MOTOR
SP2
SPEAKER
Leh Reh

Oo On A
W
12
13
SECTION 6
EXPLODED VIEWS
NOTE:
@ The mechanical parts with no reference
number in the exploded views are not
supplied.
e@ The construction parts of an assembled
part are indicated with a collation num-
ber in the remark column.
@ [tems marked ‘x’ are not stocked since
they are seldom required for routine
service. Some delay should be antici-
pated when ordering these items.
Due to standardization, parts with part
number suffix -XX and -X may be dif-
ferent from the parts specified in the
components used on the set.
Color Indication of Appearance Parts
Example:
(RED) ...KNOB, BALANCE (WHITE)
t t
Parts’ Color
Cabinet's Color
1, GENERAL (1)
Part No.
3-352-229-01
3-352-229-11
3-352-239-01
3~352-203-21
3-352-227-01
3-352-268-21
37-352-268-31
3-352-202-01
3-352-243-01
3-352-226-01
37352-238-11
*3-352-267-01
3-352-223-01
3-352-218-01
3-352-244-01
Description
(YEL)...LID, CASSETTE (YEL)
(WHT)...LID, CASSETTE (WHT)
SHEET (B), ADHESIVE
WINDOW, CASSETTE
HOLDER, CASSETTE
(YEL)...CABINET (FRONT) (YEL)
(WHT)...CABINET (FRONT) (WHT)
WINDOW, DIAL
SHEET (A), ADHESIVE
PANEL (LEFT), SIDE (GRY)
HANDLE (GRY)
BRACKET (C)
PLATE, HANDLE (GRY)
PACKING (MD BUTTON)
SHEET (C), ADHESIVE
Remarks | No. Part No. Description Remarks
14 3-352-228-01 (YEL)...LID, BATTERY CASE (YEL)
3-352-228-11 (WHT)...LID, BATTERY CASE (WHT)
15 3-352-225-01 PANEL (RIGHT), SIDE (GR‘)
16 *3-352-208-01 BRACKET (A)
7 3-352-209-01 SPRING (CASSETTE)
18 3-319-224-31 DAMPER, SMALL
19 = *3-352-250-01 (AEP)...LABEL, MODEL NUMBER
*3-352-251-01 (UK)....LABEL, MODEL NUMBER
20 7-685-648-79 SCREW +BVIP 3X12 TYPE2 IT-3
2] 7-685-246-19 SCREW +RKTP 3X8 TYPE2 N-S
22 7-685-646-79 SCREW +BVTP 3X8 TYPE2 N~-S
23 7-685-651-79 SCREW +BVIP 3X20 TYPE2 IT-3
24 *3-880-474-01 CUSHION, 15X5xX0.3
25 37-831 -441-XX CUSHION, STOPPER
26 *9-911-843-XX CUSHION
SP] 1-503-823-11 SPEAKER
SP2 1-503-823-11 SPEAKER
eae
2. GENERAL (2)
No.
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
53
Part No.
*3-352~-230-01
*3-352-231-01
*3-352-224-01
*3-352-235-01
*3-352-219-01
*3-352-220-01
*3-352-271-01
*3-352-207-01
3-352-215-01
3-352-204-01
3-352-204-11
3-352-217-01
3-352-240-01
3-352-221-01
3-352-221-11
3-352~-212-01
3-352-236-81
3-352 -236-91
*3~-352-210-01
*3-352-206-01
3-352-234-01
3-352-234-31
g b |
$96 307
Description
CHASSIS (TUN)
PLATE, INDICATION
POINTER
BUTTON (DIR)
BUTTON (B)
BUTTON (A)
BRACKET (D)
LEVER (REC)
PACKING (JACK)
(YEL)...KNOB (VOL) (YEL)
(WHT)...KNOB (VOL) (WHT)
PACKING (FUNC)
SHEET (D), ADHESIVE
(YEL)...KNOB (TUNING) (YEL)
(WHT)...KNOB (TUNING) (WHT)
TERMINAL (+ -), BATTERY
(YEL)...CABINET (REAR) (YEL)
(WHT). ..CABINET (REAR) (WHT)
TERMINAL BOARD, ANTENNA
DRUM, DIAL
(YEL)...KNOB (FINE) (YEL)
(WHT)...KNOB (FINE) (WHT)
not supplied SSS
Remarks | No.
69
70
7]
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
901
902
903
904
ANTI
not supplied
Part No.
3-352-245-01
3~-352-205-01
*3~352-216-01
*3-352-233-01
3-352-214-01
3-352-213-01
3-352-211-01
3-326-355-01
*3-352-201~01
37352-232-01
*3-352-222-01
7-685 -648-79
7-685-651~79
7-621-772-10
7-682-549-04
7~621-770~87
9-911 -844-XX
7-623-505-01
3-352-266-01
*A-3270-634-A
*]-630-149-21
*A-3270-636-A
*1-631-151-21
1-501 ~436-11
Description Remarks
SHEET (E), ADHESIVE
WINDOW (LED)
KNOB (FUNC)
KNOB (MODE)
TERMINAL (+), BATTERY
TERMINAL (-), BATTERY
TERMINAL BOARD (ECM)
SHEET, MIC
BRACKET (B)
SPRING (REVERSE)
SHAFT, TUNING
SCREW +BVTP 3X12 TYPE2 11-3
SCREW +BVTP 3X20 TYPE2 11-3
SCREW +B 2X4
SCREW +B 3X10
SCREW +P 2.6X5
SPACER, LEAF
LUG, 2
SPACER
PC BOARD ASSY, AUDIO
PC BOARD, ECM
PC BOARD ASSY, TUNER
PC BOARD, TRANSLATION
ANTENNA, TELESCOPIC

3. MECHANISM (1)
(MF-903-78D)
No.
101
102
103
104
105
106
107
108
109
110
W
112
113
114
115
116
17
118
W9
120
117
116
Part No. Description
3-325-698-01
3-322-691-01
3-330-605-01
3-322 -527-01
7-6 -105-19
RING, RETAINING
SPRING, TENSION (REC)
SPRING, TENSION
SPRING, TENSION
TPG +P 2X8, TYPE 2, NON-SLIT
SPRING, TENSION (REW)
RETAINER, LEVER
SCREW (+ PTPWH) (2.6X6)
SPRING, TENSION (PAUSE)
CUSHION (T)
SPRING, TENSION
LEVER (B), GEAR LOCK
WASHER (t=0.13)
FLYWHEEL (FW) ASSY
LEVER, SELECTION, S.OFF
3-322-679-01
*3-322-51 8-01
7-6 87-233~-11
3-322-679-01
3-831 -441-11
3-530-260-00
3-330-8@7-01.
3-701 ~437-01
*X-334] -303-1
*3-330-606-01
3-322 -533-01
3657-035 -XX
*3-322-519-01
7-6 8~134-19
3-322-566-01
BELT
BELT, COUNTER
RETAINER, THRUST
SCREW (+ PTPWH) (2.6X8)
BEARING, PULLEY
134
135
136
137
138
139
140
Part No.
3-307-94 8-01
3-330-83-01
3-322 -534-01
3-330-86-01
3-322-553-01
3-578-223-2)
3-322 -508-01
3-321-541-01
3-322 -659-01
3-313-384-01
*X -334] -302-1
3-322-660-01
3-545-715-00
X-3322 -502-1
3-322 656-01
3-322-511-01
3-322-526-01
3-701 -437-11
X-3322 -540-1
3-32 8-103-01
CFS-903L
Descr iption
WASHER, NYLON
LEVER (C), OA
SPRING
LEVER (D), OA
GEAR, CAM
WASHER, NYLON
GEAR, REEL
SPRING, COMPRESSION
WASHER (A)
SPRING, TENSION
FLYWHEEL (RV) ASSY
WASHER (B)
WASHER
CLAW ASSY, REEL
GEAR, FR
CLAW, ERASING PROTECTION
SPRING, TENSION{POWER TENSION)
WASHER (t=0.25)
DETECTION BLOCK ASSY
SPRING, TENSION (FF)

CFS-903L
4. MECHANISM (2)
No.
(MF-903-78D)
Part No.
151
152
153
154
155
156
157
158
159
160
16]
162
163
164
165
*3-330-604-01
*3-322 -5 87-01
X-3330-610-]
3-322 -555-01
*X-3322-505-1
*3-330-829-11
3-322-515-14
*3~322-5 8-11
3-322 ~693~01
*3-322-584-11
*3-322-59]-11
*3-322-58-1]
3-32 8-102-01
*3-322-517-01
3~322-575-01
Description Remarks | No. Part No.
PLATE (C), LOCK 166 3-322-554-01
PLATE (B), LOCK J67. *3-330-602-01
LEVER (R) ASSY, S.OFF 168 3-322-577-03
LEVER (E), S.OFF 169 3-322-513-01
LEVER ASSY, FR 170 3-322 -6 89-01
LEVER (C), PAUSE BUTTON Mm 3-343-146-01
LEVER, REW BUTTON | 172 3-322-576-01
LEVER, FF BUTTON 173 *X-3339-320-1
SPRING, TENSION 174 3-322 -579-01
LEVER, PLAY BUTTON 175 *3-322-5 89-01
LEVER, REC BUTTON 176 3-322 -578-01
LEVER, STOP BUTTON W77 A~3102-061 -A
SPRING, TENSION (POWER TENSION) 178 = 3-322-520-01
“LEVER, AMS 179 3-570-615-00
SPRING
Description
Remarks
ARM, REC LOCK
LEVER (R), DIRECTION
SPRING
COLLAR
RING
GEAR (A), FWD
SPRING
ARM ASSY (M), FWD GEAR
SPRING .
LEVER, SWITCH
SPRING
CHASSIS ASSY
SPRING, TENSION
POLY-WASHER (DIA.1.2)

5. MECHANISM (3)
(MF-903-78D)
No.
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
Part No.
7-621 -770~87
AX3102-109-A
3-322-512-01
3-322-514-01
3-701.-443-11
X-3337-810-1
3-703-597~-41
*3-339-701-01
7-621 -772-20
A-3114-042-A
3-578-138-01
3-578-138-11
7-6 88-001 -01
3-31 8-106-01
3-322 -567-11
3-341 -163-01
210
HE901
212
209
3
CHeeot ite 3
Description
SCREW +P 2 .6X5
CHASSIS ASSY; MECHANICAL
LEVER, EJECT
LINK (A)
WASHER
CHASSIS {R) ASSY, HEAD
PINCH ROLLER, STANDARD
GUIDE, TAPE
SCREW +B 2X5
ARM ASSY, EBF
SHIM (t=0.1)
SHIM (t=0.2)
W2, SMALL
SPRING (H}, COMPRESSION
SCREW, PAN, STEP
SPRING, COMPRESSION
ees | bis
213
Remarks | No.
HRP901
216
§-—217
Part No.
216 7-627~&) -27
217 3-322 -531 -01
218 *3-341-161-01
219 3-326-622-01
220 3-307 -948-01
221 3-341 -164-01
222 = *3-322-5W-02
223 3-322 -5 95-01
224 «= *3-322-5 94-11
225 3-32 8-101 -01
226 X-3322-524-1
227 3-701 -437-01
229 3-330-633-01
230 7-685-105-19
95 *1-602-735-00
HRP 901 1-543-389-11
B01 = 1-541 -625-11
CFS-903L
|
| 297 224
1 | Ze
oe Cle
. 225
: eC ;
Om.
Description Remarks
SCREW, PRECISION +P 1.4X5
SPRING, COMPRESSION
LEVER, AZIMUTH
RETAINER, AZIMUTH
WASHER, NYLON
SPRING
LEVER, DIRECTION RELEASE
SPRING
LEVER, MANUAL BUTTON
SPRING, TENSION(POWER TENSION)
PULLEY ASSY
WASHER (t=0.13)
SPRING, TENSION
SCREW (2X8), + PTPWH
PC BOARD, PLUNGER SOLENOID
HEAD, MAGNETIC (REC PB)
MOTOR, DC

CFS-903L
SECTION 7
ELECTRICAL PARTS LIST
NOTE:
@ Due to standardization, replacements in the parts
list may be different from the parts specified in
the diagrams or the components used on the set.
@ items marked “*’’ are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering these
items.
e@ if there are two or more same circuits in a set
such as a stereophonic machine, only typical
circuit parts may be indicated and capacitors and
resistors in other same circuits may be omitted.
Part No.
Ref.No. Description
901 ¥*A-3270-634-A PC BOARD ASSY, AUDIO
902 *1-630-149-21 PC BOARD, ECM
903. *A-3270-636-A PC BOARD ASSY, TUNER
904 = *1 -631-151-21 PC BOARD, TRANSLATION
905 = *1-602-735-00 PC BOARD, PLUNGER SOLENOID
ANT] 1-501-436-11 ANTENNA, TELESCOPIC
Cl 1-162-209-31 CERAMIC 27PF 5%
C2 1-102-960-00 CERAMIC 24PF ‘5%
C3 1-162-191-31 CERAMIC 2.2PF 10%
c4 1-161-379-00 CERAMIC 0.01MF 30%
C5 1-124-963-11 ELECT 33MF 20%
C6 1-162-287-31 CERAMIC 270PF 10%
C7 1-124-446-11 ELECT 47MF 20%
c8 1-124-925-11 ELECT 2.2MF 20%
co 1-124-446-11 ELECT 47MF 20%
C10 1-161-379-00 CERAMIC 0.01MF 30%
cil 1-124-927-11 ELECT 4.7MF 20%
cl2 1-124-499-11 ELECT IMF 20%
C13 1-161-053-00 CERAMIC 0.01 SMF 10%
cl4 1-161-053-00 CERAMIC 0.015MF 10%
C15 1-124-499-11 ELECT IMF 20%
C16 1-124-902-00 ELECT 0.47MF 20%
C17 1-124-927-11 ELECT 4.7MF 20%
C18 1+123-875-11 ELECT 1 OMF 20%
C19 1-124-463-00 ELECT 0. IMF 20%
C20 1-124-463-00 ELECT 0. 1MF 20%
C21 1-162-193-31 CERAMIC 3.3PF 10%
C22 1-102-291-11 CERAMIC 15PF. 5%
C23 1-161-379-00 CERAMIC 0.01MF 30%
c24 1-162-217-31 | CERAMIC 5S6PF 5%
C25 1-102-942-00 CERAMIC SPF 0.5PF
C26 1-136-010-00 FILM 200PF 5%
C27 1-130-013-00 FILM 390PF 5%
C28 1-130-011-00 FILM 27 OPF 5%
C29 1-136-287-11 FILM. 0.0047MF 5%
C30 1-162-206-31 | CERAMIC. 20PF 5%
C31 1-162-286-31 CERAMIC 220PF 10%
C32 1-162-282-31 CERAMIC 100PF 10%
C34 1-162-192-31 CERAMIC 2.7PF 10%
C101 = 1-124-902-00 ELECT 0.47MF 20%
C102 1-124-902-00 ELECT 0.47MF 20%
C105 1-162-290-31 CERAMIC 47 0PF 10%
C106 =: 1-124-443-00 ELECT 100MF 20%
C107:
1-162-843-11
CERAMIC:
0.022MF
10%
C108 = 1-123-875-11 ELECT TOMF 20%
CAPACITORS:
MF: uF, PF: uF.
RESISTORS
e Allresistors are in ohms.
e@ F: nonftammable
COILS
@ MMH: mH, UH: pwH
SEMICONDUCTORS
The components
identified by
mark or dotted line with mark
A are critical for safety.
Replace only with part number
specified.
In each case, U: yu, for example:
UA...: BA..., UPA...: uPA...,
UPC...: uPC, UPD...: uPD...
Description Ref.No. Part No.
C109 =: 1-161-375-00 CERAMIC 0.0022MF 20% 16V
C110 =. 1-124-902-00 ELECT 0.47MF 20% 50V
C112) ~=—s-1-162-844-11 CERAMIC 0.027MF 10% 16V
C113.-1-124-902-00 ELECT 0.47MF 20% 50V
C115). -1-124-477-11 ELECT 47MF 20% 16V
C116 = 1-124-473-11 ELECT 1 OOOMF 20% 10V
C117. =: 1-130-490-11 MYLAR 0.03 9MF 5% 50V
50V C118 =1-162-282-31 CERAMIC 100PF 10% 50V
50V C119 =: 1-162-282-31 CERAMIC 100PF 10% 50V
50V
C120 = 1-162-282-31 CERAMIC 1 00PF 10% 50V
16V C201 1-124-902-00 ELECT 0.47MF 20% 50V
a C202 = 1-124-902-00 ELECT 0.47MF 20% 50V
C205 1-162-290-31 CERAMIC 470PF 10% 50V
10V C206 =: 1-124-443-00 ELECT 1 OOMF 20% 10V
sh C207 = 1-162-843-11 CERAMIC 0.022MF 10% 16V
V
C208 =1-123-875-11 ELECT 1 OMF 20% 50V
16V C209 =1-161~375-00° CERAMIC 0.002 2MF 20% 16V
50V C210 =1-124-902-00 ELECT O.47MF 20% 50V
50V
C212) =1-162-844-11 CERAMIC 0.027MF 10% 16V
16V C213. 1-124-902-00 ELECT 0.47MF 20% 50V
16V C215 = =1-124-477-11 ELECT 47MF 20% 16V
50V
C216 =: 1-124-473-11 ELECT 1 OOOMF 20% 10V
50V C217. —-1-130-490-11 MYLAR 0.039MF 5% 50V
50V C218 = 1-162-282-31 CERAMIC JOOPF 10% 50V
50V
C219 = 1-162-282-31 CERAMIC J OOPF 10% 50V
50V C220 = 1-162-282-31 CERAMIC 1 00PF 10% 50V
50V C301 1-162-847-11 CERAMIC 0.047MF 10% 16V
50V
C302 1-124-902-00 ELECT 0.47MF 20% 50V
50V C303. -1-123-875-11 ELECT 1 OMF 20% 50V
16V C304 =1-162-847-11 CERAMIC 0.047MF 10% 16V
50V
C305 =1-124~-963-11 ELECT 33MF 20% 16V
50V C306 © 1-161-379-00 CERAMIC 0.01MF 30% 16V
50V C307. 1-124-119-00 ELECT 33 0MF 20% 16V
50V
C308 1-123-875-11 ELECT _ 10MF 20% 50V
50V C309 = 1-161-379-00 CERAMIC 0.01MF 30% 16V
50V C311 1-124-927-11 ELECT 4,7MF 20% 50V
50V ;
C312. = 1-123-875-11 ELECT 1 OMF 20% 50V
50V C313. -1-126-176-11 ELECT 220MF - 20% TOV
50V C314 =1-124-902-00 ELECT 0.47MF 20% 50V
50V
C316 =. 1-124-963-1] ELECT 33MF 20% 16V
50V C319 = =1-102-119-00 CERAMIC 0.001 SMF 10% 50V
50V C320 1-102-117-00 CERAMIC 820PF 10% 50V
50V
C321 1-130-481-00 MYLAR - 0.006 8MF 5% 50V
10V C322 1-124-477-11 ELECT - 47MF 20% 16V
16V C323. 1-162-286-31 CERAMIC 220PF 10% 50V
50V" ;

10%
20%
20%
20%
20%
10%
20%
20%
10%
20%
20%
20%
20%
Ref.No. Part No. Description
C324 © 1-162-835-11 CERAMIC 0.0047MF
C327) = 1-124-556-11 ELECT 2200MF
C328 = 1-124-499-11 ELECT IMF
C329 = 1-124-499-11 ELECT IMF
C330 = 1-124-442-00 ELECT 33 0MF
C401 1-162-847-11 CERAMIC 0.047MF
C402 = 1-124-902-00 ELECT 0.47MF
C403 =1-124-902-00 ELECT 0.47MF
C404 1-161-046-00 CERAMIC 0.0039MF
C405 = 1-124-499-11 . ELECT 1MF
C406 =: 1-126-233-11 ELECT 22MF
C407): 1-124-927-11 ELECT 4. 7MF
C408 =1-124-927-11 ELECT 4. 7MF
CFI 1-567-166-00 FILTER, CERAMIC
CF2 1-567-166-00 FILTER, CERAMIC
CF3 1-$67-670-11 FILTER, CERAMIC
CN] *1-508-695-00 CONNECTOR PIN 6P
CN701 *1-564-778-11 PLUG, CONNECTOR (2.5MM) 4P
CN702 *1-564-778-31 PLUG, CONNECTOR (2.5MM) 4P
CN703 *1-508-695-00 CONNECTOR PIN 6P
CN704 *1-506-988-11 PIN, CONNECTOR (PC BOARD) 6P
CNJ1 *1-568-411-11 SOCKET, CONNECTOR 6P
CNJ703*1 ~568~411-11
CT1-4. yey a7
ate 1 151-637-11
CT6 1-141-401-11
CT7 1-141 -266-11
CT1IO © 1-141-266-11
D1 8-719-911-19
D2 8-719-911-19
0303 8-719-911-19
D304 = 8-719-911-19
D305 = 8-719-911-19
D306 = 8-719-911-19
D307. 8-719-812-41
0308 8-719-911-19
0309 8-719-911-19
D310 =8-719-911-19
D311 8-719-911~-19
D313. 8-719-911-19
D314 = 8-719-911-19
D401 = 8-719-911-19
FLI 1-236 -022-11
HRP9O1] 1-543~389-11
SOCKET, CONNECTOR 6P
CAP, VARIABLE
CAP, ADJ
CAP, TRIMMER
CAP, TRIMMER
DLODE
DIODE
DIODE
DIODE
DIODE
DIODE
1$S119
18s119
1Ss119
1SS119
1ssi19
188119
TLRI24
1Ssl19
1SS119
DIODE
DIODE
DIODE
DIODE
DIODE
DIODE
1$s119
1Ssl19
1Ss119
DIODE
DIODE
1$s119
1Ssi19
FILTER, BAND PASS
HEAD, MAGNETIC (REC/PB)
16V
16V
50V
50V
6.3V
16V
50V
50V
16V
50V
25V
50V
50V
Ref.No.
Icl
1C301
1¢302
1¢401
J301
J302
LI
L2
L3
L5
L6
L7
L8
L10
u11
M301
MIC9O1
PM301
Q2
9101
Q201
Q301
Q302
Q303
Q304
Q305
Q306
Q307
Q308
Q309
Q310
RI
R2
R3
R4
R5
R6
R7
R38
RO
R10
R11
R12
Part No.
8-752-035-68
8-759-978-54
8-759-972-19
8-759-905-47
1-566-891-11
1-507-954-11
1-422-317-31
1-459-815-11
1-402-431-11
1-406-253-11
1-406 -280-11
1-406-252-11
1-402-378-11
1-402-431~11
1-410-316-11
1-541-625-11
1-542-064-31
1-454~-355-00
8-729-922-66
8-729~900-74
8~-729-900-74
8-729-801 -93
8-729-281 -53
8-729-173-38
8-729-281 -53
8-729-195-23
8-729-281-53
8-729-100-13
8-729-173-38
8-729-281-53
8-729-900-61
17249-4417 -11
1-249-421-11
1-249-415-11
1-249-405-11
1-249-427-11
1-249-427-11
1-247 -887-00
1-249-421-11
1-247 -887 -00
1-249-429-11
1-249-398-11
1-249-411-11
CFS-903L
Description
IC CXA1238S
IC BA3420AL
IC BA5410
IC BA338
JACK (PHONES)
JACK, EXTERNAL POWER (DC IN 9V)
COIL, VHF
COIL (WITH CORE)
ANTENNA, FERRITE-ROD (LW,MW)
COIL (OSC)
COIL (OSC)
COIL (OSC)
COIL (ANT)
ANTENNA, FERRITE-ROD (LW,MW)
INDUCTOR 1UH
MOTOR, DC
MICROPHONE, ELECTRET CONDENSER
SOLENOID, PLUNGER
TRANSISTOR 2SC2410S-N
TRANSISTOR DTC143TS
TRANSISTOR DTC143TS
TRANSISTOR 2SD1387
TRANSISTOR 2SC1815GR
TRANSISTOR 2SA733-K
TRANSISTOR 2SC1815GR
TRANSISTOR 2SA952
TRANSISTOR 2SC1815GR
TRANSISTOR 2SC2001
TRANSISTOR 2SA733~-K
TRANSISTOR 2SC1815GR
TRANSISTOR DTAII4ES
CARBON: 100K 5% 1/4W
CARBON 2.2K 5% 1/4W
CARBON 680 5% 1/4W
CARBON 100 5% 1/4W
CARBON 6.8K 5% 1/4W
CARBON 6.8K 5% 1/4W
CARBON 220K 5% 1/4W
CARBON 2.2K 5% 1/4W
CARBON 220K 5% 1/4W
CARBON 10K = 5% 1/4W
CARBON 27 5% 1/4W
CARBON 330 5% 1/4W

CFS-903L
Ref.No.
Part
No.
Description
Ref.No.
Part
No.
Description
R14
1-249-429-11
CARBON
10K
«65%
/4W-
R326
1-249-405-11
CARBON
100
5%
1/4W
R15
1-249-429-11
CARBON
10K.
5%
=
1/4W
R327
-1-249-441-11
CARBON
100K
5%
1/4W
R16
1-249-433-11
CARBON
22K
5%
1
/4W
R328
17249-415-11
CARBON
680
5%
174
R18
1-249-417-11
CARBON
1K
5%
«1
/4W
R329
1-249-411-11
CARBON
330
5%
1/4W
R19
1-249-417-11
CARBON
1K
5%
1/4
R330
1-249-417-11
CARBON
1K
5%
1/4W
R20
1-249-441~-11
CARBON
100K
5%
1/4W
R331
1-249-423-11
CARBON
3.3K
5%
1/4W
R22
1-249-435-11
CARBON
33K
5%
=
1/4W
R332
1-249-427-11
CARBON
6.8K
5%
1/4W
R101
1-247-895-00
CARBON
470K
5%
1/4W
R401
1-247-889-00
CARBON
270K
5%
1/4W
R102
1-249-429-11
CARBON
10K
«5%
1/4W
R402
1-247-891-00
CARBON
330K
5%
1/4W
R103.
1-249-419-11
CARBON
1.5K
5%
1/4W
R403
1-249-429-11
CARBON
10K
5%
1/4W
R104
-1-249-401-11
CARBON
47
5%
1/4
R404
1-249-441-11
.
CARBON
TOOK
5%
1/4W
R105
=:
1-247-850-11
CARBON
6.2K
5%
1/4W
R405
1-249-413-11
CARBON
470
5%
=
1/4W
R406
17-249-422-11
CARBON
2.7K
5%
1/4W
R106
1-249-409-11
CARBON
220
«5%
1/4W
R107:
1-249-437-11
CARBON
47K
5%
1/4
RV]:
1-228-995-00
RES,
ADJ,
CARBON
22K
R108
1-249-434-11
CARBON
27K
«5%
1/4W
‘
Ss]
1-571-896-11
SWITCH,
LEVER SLIDE
(BAND
SELECT)
R109
1-249-428-11
CARBON
8.2K
5%
1/4W
$301
1-571-950-11
SWITCH,
SLIDE
(REC/PB)
R110
1-249-441-11
CARBON
100K
5%
1/4
$302
1-570-347-31
SWITCH,
LEVER
SLIDE
(FUNCTION)
R111:
1-249-429-11
CARBON
10K
«65%
=
/4W
$303.
1-571-474-11
SWITCH,
PUSH
(DIR
MODE)
R112.
=:
1-249-432-11
CARBON
18K
5%
1/4W
$304
1-571-043-11
SWITCH,
PUSH
(1
KEY)(REC
MUTE)
R113.
1-249-406-11
CARBON
120
5%
1/4W
$305
1-571-307-11.
SWITCH,
SLIDE
(MONO/ST)
R114.
1-249-405-11
CARBON
100
5%
/4W
$306
1-570-012-11-
SWITCH,
LEAF
(PLAY)
R201
1-247-895-00
CARBON
470K
5%
1/4W
$307
1-570-012-11
SWITCH,
LEAF
(FF
/REW)
R202
1-249-429-11
CARBON
10K
45%
1/4W
$308
1-570-012-11
SWITCH,
LEAF
(REV)
R203.
1-249-419-11
CARBON
1.5K
5%
1/4W
$309
1-571-904-11
SWITCH,
SLIDE
(HEAD
REV-FWD)
R204
1-249-401-11
CARBON
47
5%
=
1/4
sPl
1-503-823-11
SPEAKER
R205
1-247-850-11
CARBON
6.2K.
5%
1/4W
SP2-1-503-823-11
SPEAKER
R206
1-249-409-11
CARBON
220
5%
1/4W
Tl
1-404-158-11
COIL,
IFT
R207
1-249-437-11
CARBON
47K
65%
~~
1
/4W
1301
1-433-268-00
TRANSFORMER,
BIAS
OSCILLATOR
R208
1-249-434-11
CARBON
27K
«5%
1/4
R209
1-249-428-11
CARBON
8.2K
5%
1/4W
VRI
1-238-629-11
RES, VAR,
CARBON
100K
(FINE
TUNING)
VR301
1-230-454-11
RES,
VAR,
CARBON
20K/20K
(VOLUME)
R210
1-249-441-11
CARBON
100K
5%
1/4W
VR302
1-237-567-11
RES, VAR,
CARBON
20K/20K
(TONE)
R211:
1-249-429-11
CARBON
10K
465%
=
/4W
R212
1-249-432-11
CARBON
18K
«5%
1/4W
R213.
1-249-406-11
CARBON
120
5%
1/4W
ACCESSORY
&
PACKING
MATERIAL
R214
1-249-405-11
CARBON
100
5%
~=-1/4W
R301,
1-249-417-11
CARBON
1K
5%
1/4W
A\.1-463-700-21
(UK)....ADAPTOR,
AC
(AC-930A)
;
A\.1-463-705-21
(AEP)...ADAPTOR,
AC
(AC-930AEP)
R302
1-249-424-11
CARBON
3.9K
5%
1/4
R303
1-249-421-11
CARBON
2.2K
5%
1/4
3-340-754-01
SHEET,
PROTECTION
R305
=
1-249-433-11
CARBON
22k
5%
/
*3-352-253-01
CUSHION:
(LEFT)
(RIGHT)
R306
1-249-407-11
CARBON
150
5%
1/4W
*3-352-263-01
(AEP)...
INDIVIDUAL
CARTON
R307
1-249-432-11
CARBON
18K
45%
1/4
*3-352-264-01
(UK)....
INDIVIDUAL
CARTON
R308
1-249-425-11
CARBON
4.7K
5%
1/4W
3-701-626-00
BAG,
POLYETHYLENE
R309
1-249-417-11
CARBON
1K
5%
1/4W
R310
1-249-441-11
CARBON
OOK
5%
=
1/4W
3-750-186-11
MANUAL,
INSTRUCTION
R311:
1-249-405-11
CARBON
100.
5%
1/4W
3-750-186-41
(AEP)...MANUAL,
INSTRUCTION
1
~249-421-
-
ee
eres
Et
een
DOK
2
Hits
Note:
The
components
identified
by
mark
A
or
dotted
R315
17-247-810-11
CARBON
130
5%
1/4W
line
with
mark
A
are
critical
for
safety.
Replace
only
with
part
number
specified.
R316
1-249-437-11
CARBON
47K
5%
=
1/4W
R317.
—-1-249-437-11
CARBON
47K
5%
=
1/4W
R319
1-249-393-11
CARBON
10
5%
=
/4W
R322
1-249-417-11
CARBON
1K
5%
1/4W
R323.
1-249-417-11
CARBON
1K
5%
1/4
R324
1-247-893-11
CARBON
390K
5%
1/4W
R325
1-247-899-11
CARBON
680K
5%
1/4W
English
:
89F0649-1
Sony
Corporation
Printed
in
Japan
9-953-789-11
Audio
Group
©1989.6
Published by A/V Engineering Service Dept: