Sony Walkman WM-FX491 Service Manual

– 22 – – 24 –– 23 –
z
IC Block Diagram.
IC1 TA2104AFN (EL)
21222324
2
3
5
4
6
7
8
9
10
1
11
12
13
14
15
16
17
181920
FM
OSC
AM
OSC
BUFF
IF
BUFF
AF
BUFF
BUFF
AM
MIX
FM
MIX
FM
RF
ST
LEVEL
DET
1/8
AMIF
FMIF
AGC
SW
IF
RED
AM
DET
FM
DET
AF
ST/MO
FM/AM
MUTE
VCO
DIVIDE
DECOOE
FM RF OUT RF VCC AM RF IN FM OSC AM OSC OSC OUT ST-LED IF REQ DET OUT MPX-IN LPF1/MO-ST LPF2/BAND
RF GND
FM RF IN
AM LOW CUT
MIX OUT
VCC
AM IF IN
FM IF IN
GND
AGC
QUAD
R-OUT
L-OUT
SECTION 5
EXPLODED VIEWS
NOTE :
• -XX, -X mean standardized parts, so they
may have some difference from the original
one.
• Items marked “ * ”are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
• The mechanical parts with no reference
number in the exploded views are not
supplied.
• Hardware (# mark) list and accessories and
packing materials are given in the last of this
parts list.
• Abbreviation
CND : Canadian
FR : French
EA : Saudi Arabia
CH : Chinese
E : Indication of country of origin
9E : No Indication of country of origin
5E, 6E : South America
CEV : Ukraine, Hungary, Czech
5-1. CABINET SECTION
5-2. MECHANISM DECK SECTION
(MT-WMEX404-147)
53
52
52
54
71
56
55
71
57
58
59
60
70
61
62
68
69
M901
63
64
66
66
67
67
69
68
65
51
HP901
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
1 3-039-652-01 LID,BATTERY CASE (FX491,FX491ST)
1 3-039-652-11 LID,BATTERY CASE (FX493,FX493ST)
2 3-039-658-01 RUBBER (B), BUTTON
3 X-3378-293-1 CABINET (FRONT) SUB ASSY(FX491,FX491ST)
3 X-3378-294-1 CABINET (FRONT) SUB ASSY(FX493,FX493ST)
4 3-039-657-01 RUBBER (A), BUTTON
5 3-704-197-11 LOCK,SERRAT IB
* 6 3-039-660-01 HOLDER (LCD)
7 3-040-176-01 RUBBER, CONDUCTIVE
8 3-022-857-01 SPRING (OPEN)
9 3-022-856-01 SPRING (KNOB), TENSION
10 3-704-197-91 SCREW (M1.4X1.8), LOCKING
11 3-019-421-01 LEVER, OPEN
12 3-019-422-01 JOINT
13 3-349-825-31 SCREW
14 3-318-382-61 SCREW (1.7X2.5), TAPPING
15 3-039-661-01 LOCKER (OPEN)
16 3-025-276-01 SPRING (LID UP)
17 X-3378-289-1 HOLDER SUB ASSY, CASSETTE
(FX491:CND,5E,6E,FX491ST)
17 X-3378-290-1 HOLDER SUB ASSY, CASSETTE
(FX491:AEP,CEV,FR,E,9E,CH)
17 X-3378-291-1 HOLDER SUB ASSY, CASSETTE
(FX493:US,5E,6E,FX493ST)
17 X-3378-292-1 HOLDER SUB ASSY, CASSETTE
(FX493:AEP,CEV,FR,9E,EA,CH)
18 3-019-514-21 KNOB(OPEN)
19 3-039-651-01 CENTER CABINET (US,CND,5E,6E)
19 3-039-651-11 CENTER CABINET (E,EA,CH)
19 3-039-651-21 CENTER CABINET (AEP,CEV,FR)
19 3-039-651-31 CENTER CABINET (9E)
20 3-318-203-51 SCREW (B1.7X12), TAPPING
21 3-040-144-01 SPRING (CASSETTE)
23 3-020-511-01 TERMINAL (+), BATTERY
24 A-3021-309-A MAIN BOARD, COMPLETE (US,CND)
24 A-3021-310-A MAIN BOARD, COMPLETE (AEP,CEV)
24 A-3021-311-A MAIN BOARD, COMPLETE (E,9E,EA,CH)
24 A-3021-312-A MAIN BOARD, COMPLETE (5E,6E)
24 A-3021-313-A MAIN BOARD, COMPLETE (FR)
25 3-020-512-01 TERMINAL (-), BATTERY
L2 1-501-987-21 AM FERRITE-ROD ANTENNA (AM TRACKING)
ND701 1-803-764-11 DISPLAY PANEL, LIQUID CRYSTAL
ND701
MT-WMEX404-147
L2
1
4
3
2
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
23
24
25
Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark
51 X-3375-020-1 PINCH LEVER (N-F) ASSY
52 X-3372-619-1 WHEEL ASSY (SP), CAPSTAN
53 3-354-868-01 BELT
54 3-021-950-01 GEAR (DF)
55 3-021-982-01 SPRING (MODE), COMPRESSION
56 X-3375-024-1 CLUTCH ASSY (F)
57 3-021-951-01 GEAR (CAM)
58 3-348-953-21 WASHER
59 3-021-979-01 SPRING (UDF), COMPRESSION
60 3-021-949-01 GEAR (BF)
61 X-3375-022-1 CHASSIS ASSY (F)
62 3-021-974-03 SPRING (HEAD BASE)
63 3-703-816-31 SCREW (M1.4), SPECIAL HEAD
64 X-3375-021-1 PINCH LEVER (R-F) ASSY
65 3-703-816-73 SCREW (M1.4), SPECIAL HEAD
66 3-921-797-01 WASHER
67 3-921-003-01 BEARING
68 3-022-100-01 SPRING (B.T.), COMPRESSION
69 3-024-223-01 GEAR (REEL-2)
70 X-3375-268-1 GEAR (AF-SV) ASSY
71 3-034-685-01 WASHER (1.03-3.0)
HP901 1-500-555-11 HEAD, MAGNETIC (PLAYBACK)
M901 1-763-073-11 MOTOR, DC (CAPSTAN/REEL)
(INCLUDING PULLEY)

Sony Walkman WM-FX491 Specifications

General

Brand	Sony
Model	Walkman WM-FX491
Category	Cassette Player
Language	English