Exploded Views; Cabinet Section; Mechanism Deck Section (Wm-Fx277) - Sony WM-FX277 Service Manual

IC Block Diagrams.
z
IC301 LB8115W-NA-TLM
48 47 46 45 44 43 42 41 40 39 38 37
FREQ
PRE DRIVER CARC.
FWD/
REV
COM 1
OPERATION LOGIC
OSC
REF
VOLTAGE
OPERATION
PLUSE DET
DET
CURRENT SPEED
RI 2
DET
REF VOLTAGE
FOR SPEED CONTROL
S/S BIAS LOW
3
BOOST
PRE GND
4
PRE OUT (L) 5 DET
PRE NF (L) 6
7
PRE OUT (R)
8
PRE NF (R)
FWD IN (L) 9
REV IN (L) 10
FWD IN (R) 11
12
REV IN (R)
REF
SYS
–
CONT
+
VREF
R.F
13 14 15 16 17 18 19 20 21 22 23 24
IC1 CXA1960Q
30 29 28 27 26 25 24 23 22 21
MPRM 31
AM RF FM RF
AMP AMP
TV RF
AMP
V12M 32 OL DET
MUTE 33
FM LMT
MUTE 150kHz 1/X
FM DET
FM/TV
AAGC 34
LPF
AM/FM: 1/2
PSN TV: 1/8
DETO 35
AM BPF
AGC AMP
45kHz
TUNE
MPXI 36
STEREO AUDIO R
MPX DECODER
STEREO AUDIO L
STID
38kHz
PLT2 37
PLT1 38
PD VCO 1/2 1/2
PLL1 39
19kHz
PLL2 40 PLAP
1.65V
1 2 3 4 5 6 7 8 9 10
– 20 –
NOTE :
• -XX, -X mean standardized parts, so they
may have some difference from the original
one.
• Color indication of Appearance Parts
Example :
KNOB, BALANCE (WHITE) ••• (RED)
↑
Parts color Cabinet's color
• Items marked " * "are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.

5-1. CABINET SECTION

36
VSP
35 +
IN
34 MVREF
33
M-GND
32 LOW BOOST SW
31
DET OUT
30 MIX IN (L)
12
29 MIX IN (R)
28 HP IN (L)
27 HP IN (R)
26 LP.2
25 MIX OUT (R)
20 TVRO
19 REGV
1.25V
FM/TV OSC Ref. No. Part No. Description
18 FTLO
1 3-044-867-01 CABINET (FRONT) (FX467,FX467ST)
1 3-044-867-11 CABINET (FRONT) (FX277)
17 FMBF
2 3-044-868-01 WINDOW (LCD) (FX467,FX467ST)
1.25V
2 3-044-868-11 WINDOW (LCD)(SLIVER) (FX277)
2 3-044-868-21 WINDOW (LCD)(BLUE) (FX277)
16 AMLO
AM OSC
3 3-044-869-01 KNOB(HOLD)
15 FALC
14 PLLO 4 3-044-870-01 BUTTON (PRESET)
4 3-044-870-11 BUTTON (PRESET) (FX277)
13 COMP
– 5 3-015-285-01 SCREW(M1.4),TOOTHED LOCK (WH)
+ 6 A-3021-322-A MAINBOARD, COMPLETE (FX467,FX467ST)
12 BAND
1.25V
6 A-3021-323-A MAINBOARD, COMPLETE (FX277)
7 3-044-865-01 STOPPER
11 TUNE 8 3-007-006-21 BUTTON (STOP)
9 3-007-004-21 BUTTON (FF)
10 3-030-054-01 BUTTON (PLAY)
SECTION 5

EXPLODED VIEWS

• 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.
↑
15
14
13
not
supplied
L3
11
18
10
9
7
8
17
6
19
ND701
4 5
20
1
3
2
Remark Ref. No. Part No. Description
11 3-007-005-21 BUTTON (REW)
12 3-044-864-01 CASSETTE, HOLDER
13 3-007-012-01 SPRING (TORSION)
14 X-3378-641-1 CABINET (CENTER) SUB ASSY
14 X-3378-642-1 CABINET (CENTER) SUB ASSY (FX277)
15 3-007-011-01 SPRING (CASSETTE)
17 3-030-055-01 TERMINAL (+), BATTERY
18 3-007-010-01 TERMINAL (-), BATTERY
* 19 1-694-218-31 CONNECTOR, RUBBER
* 20 3-044-866-01 HOLDER, LCD
L3 1-754-124-11 ANTENNA, FERRITE-ROD (AM TRACKING)
ND701 1-803-944-11 PANEL, LIQUID CRYSTAL DISPLAY
– 21 –

5-2. MECHANISM DECK SECTION (WM-FX277)

(MF-WMFX277-114)
69
not
supplied
59
58
60
68
53
52
55
not
supplied
56
51
HP601
54
Ref. No. Part No. Description Remark
51 51 X-3369-749-1 PINCH LEVER (N) ASSY X-3369-749-1 PINCH LEVER (N) ASSY
52 52 3-920-996-01 SPRING (PINCH N) 3-920-996-01 SPRING (PINCH N)
53 53 X-3372-619-1 WHEEL ASSY (P), CAPSTAN X-3372-619-1 WHEEL ASSY (P), CAPSTAN
54 54 3-703-816-73 SCREW (M1.4), SPECIAL HEAD (FX277) 3-703-816-73 SCREW (M1.4), SPECIAL HEAD (FX277)
Remark
55 55 3-921-042-01 GEAR(REEL) 3-921-042-01 GEAR(REEL)
56 56 3-921-797-01 WASHER 3-921-797-01 WASHER
57 57 3-036-664-11 SPRING (FR LEVER OWN) (FX277) 3-036-664-11 SPRING (FR LEVER OWN) (FX277)
58 58 3-013-560-11 BELT (FX277) 3-013-560-11 BELT (FX277)
(FX467,FX467ST)
59 59 3-015-436-01 SPRING (STOP) 3-015-436-01 SPRING (STOP)
60 60 3-013-142-01 SPRING (FR-CP) 3-013-142-01 SPRING (FR-CP)
65
57 63
64
66
62
61
not
supplied
not supplied
not
supplied
not
supplied 55
56
M601
67
Ref. No. Part No. Description Remark
61 X-3376-169-1 CLUTCH ASSY
62 3-920-990-01 SPRING (UD), COMPRESSION
63 3-921-335-01 WASHER, LEVER
64 3-923-530-01 SLEEVE (M)
65 3-728-091-01 WASHER, STOPPER
66 3-938-613-01 LEVER (OW), DETECTION (FX277)
67 3-703-816-31 SCREW (M1.4), SPECIAL HEAD
68 3-016-989-01 SPRING (SW-CP)
69 X-3376-206-1 CHASSIS COMP ASSY (GL-02) (FX277)
HP601 1-500-641-11 HEAD, MAGNETIC (PLAYBACK) (FX277)
M601 1-763-073-11 MOTOR(CAPSTAN/REEL) (INCLUDING PULLY)
– 22 –