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Model
XR-4950X
Pages
33
Size
3.18 MB
Type
PDF
Document
Service Manual
Brand
Device
Car Audio
File
xr-4950x.pdf
Date

Sony XR-4950X Service Manual ▷ View online

26
XR-4950X
7-1. GENERAL  SECTION
SECTION  7
EXPLODED  VIEWS
• 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 num-
ber in the exploded views are not supplied.
• Hardware (# mark) list and accessories and
packing materials are given in the last of the
electrical parts list.
NOTE:
• -XX and -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
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
1
X-3378-397-1 PANEL ASSY, SUB
* 2
1-676-603-11 SUB BOARD
3
1-792-195-11 CABLE, FLEXIBLE FLAT (14 CORE)
4
X-3377-621-1 LOCK ASSY
5
3-040-990-01 BUTTON (EJECT) (Z)
6
3-935-003-01 SPRING, TORSION
7
3-027-437-11 DOOR, CASSETTE
8
X-3376-699-1 GEAR ASSY
9
3-713-786-51 SCREW +P 2X3
10
3-030-909-01 DAMPER, OIL
* 11
3-040-994-01 CHASSIS
* 12
3-040-995-01 COVER
13
3-915-923-01 SCREW, GROUND POINT
14
1-776-207-82 CORD (WITH CONNECTOR) (POWER)
* 15
3-045-828-01 INSULATED PLATE
16
3-012-859-01 CAP (25), RUBBER
* 17
3-045-878-01 PLATE (TU), GROUND
* 18
3-045-877-01 CUSHION (TU)
* 19
A-3340-114-A MAIN BOARD, COMPLETE
* 20
3-040-998-01 BRACKET (IC)
* 21
3-041-262-01 HEAT SINK (REG/XR)
* 22
3-040-996-01 HEAT SINK (2P)
* 23
3-046-991-01 SPACER (COVER R)
* 24
3-046-990-01 SPACER (COVER L)
F781
1-532-877-11 FUSE (BLADE TYPE) (AUTO FUSE) (10A)
TU1
A-3282-061-A TUNER UNIT (TUX-020)
MG-25F-136
#3
#1
#1
#1
#1
#10
#9
#1
TU1
F781
#5
#4
#3
#2
#3
#2
#3
Front panel
section
not
supplied
1
4
3
2
5
6
7
8
9
10
11
13
20
24
12
23
14
18
15
17
16
19
22
21
27
XR-4950X
7-2. FRONT  PANEL  SECTION
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
51
3-040-980-01 BUTTON (SOURCE)
52
3-040-981-11 KNOB (VOL)
53
3-041-005-11 BUTTON (D) (D-BASS)
54
3-221-784-01 BUTTON (OPEN)
55
3-037-267-01 SPRING (OPEN)
56
3-040-987-01 BUTTON (OFF)
57
3-040-988-01 BUTTON (1-6) (1. 2. 3. 4. 5. 6)
58
3-040-985-11 BUTTON (DIR/ENTER) (MODE o. ENTER)
59
3-040-986-01 BUTTON (MENU/SOUND)
* 60
3-040-997-01 PLATE (LCD), GROUND
* 61
3-041-371-11 SHEET (REFLECTOR)
* 62
3-040-993-01 PLATE (LCD), LIGHT GUIDE
63
1-694-660-11 CONDUCTIVE BOARD, CONNECTION
* 64
3-040-992-01 HOLDER (LCD)
65
X-3378-398-1 PANEL ASSY, FRONT BACK
66
3-045-596-01 CUSHION (OFF)
67
X-3380-780-1 PANEL SUB ASSY
LCD901 1-803-907-51 DISPLAY PANEL, LIQUID CRYSTAL
#8
LCD901
#8
51
52
67
not supplied
(KEY board)
56
53
54
55
57
58
59
60
61
62
63
64
65
66
28
XR-4950X
7-3. MECHANISM  DECK  SECTION
(MG-25F-136)
160
159
158
155
154
153
152
156
157
163
161
162
164
166
167
151
168
168
HP901
not supplied
M901
#7
#6
165
A
A
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
161
3-933-346-01 CATCHER
162
3-933-344-01 GUIDE (C)
163
3-014-798-01 SCREW (HEAD), SPECIAL
164
3-364-151-01 WASHER
165
A-3220-610-A MECHANISM DECK ASSY
166
3-017-302-01 BELT (25)
167
3-026-636-01 FLYWHEEL (F)
168
3-701-437-21 WASHER
HP901
1-500-157-21 HEAD, MAGNETIC (PLAYBACK)
M901
A-3291-665-A MOTOR ASSY, MAIN (CAPSTAN/REEL)
151
A-3291-667-A CLUTCH (FR) ASSY
* 152
3-019-130-01 LEVER (LDG-A)
* 153
3-019-131-01 LEVER (LDG-B)
154
3-020-539-01 SPRING (LD-1), TENSION
155
3-020-540-01 SPRING (LD-2), TENSION
156
3-020-542-01 GEAR (LOADING FT)
157
3-341-753-11 WASHER, POLYETHYLENE
158
3-020-533-01 HOUSING
* 159
3-020-532-01 ARM (SUCTION)
160
3-020-534-01 HANGER
29
XR-4950X
SECTION  8
ELECTRICAL  PARTS  LIST
KEY
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
NOTE:
• Due to standardization, replacements in the
parts list may be different from the parts speci-
fied in the diagrams or the components used
on the set.
• -XX and -X mean standardized parts, so they
may have some difference from the original
one.
• RESISTORS
All resistors are in ohms.
METAL: Metal-film resistor.
METAL OXIDE: Metal oxide-film resistor.
F: nonflammable
• Items marked “*” are not stocked since they
are seldom required for routine service.
Some delay should be anticipated when order-
ing these items.
• SEMICONDUCTORS
In each case, u: 
µ
, for example:
uA. .
µ
A. .
uPA. . : 
µ
PA. .
uPB. . : 
µ
PB. .
uPC. . : 
µ
PC. .
uPD. . : 
µ
PD. .
• CAPACITORS
uF: 
µ
F
• COILS
uH: 
µ
H
KEY BOARD
**********
1-694-660-11 CONDUCTIVE BOARD, CONNECTION
*
3-040-992-01 HOLDER (LCD)
*
3-040-993-01 PLATE (LCD), LIGHT GUIDE
*
3-040-997-01 PLATE (LCD), GROUND
*
3-041-371-11 SHEET (REFLECTOR)
< CAPACITOR >
C952
1-163-037-11 CERAMIC CHIP
0.022uF
10%
25V
C953
1-163-251-11 CERAMIC CHIP
100PF
5%
50V
C954
1-164-004-11 CERAMIC CHIP
0.1uF
10%
25V
C955
1-164-004-11 CERAMIC CHIP
0.1uF
10%
25V
C956
1-164-489-11 CERAMIC CHIP
0.22uF
10%
16V
< CONNECTOR >
CN901
1-794-065-22 PLUG, CONNECTOR 14P
< DIODE >
D901
8-719-158-49 DIODE   UDZ-TE-17-12B
D902
8-719-056-82 DIODE   UDZ-TE-17-6.2B
D903
8-719-056-82 DIODE   UDZ-TE-17-6.2B
D904
8-719-056-82 DIODE   UDZ-TE-17-6.2B
D952
8-719-976-99 DIODE   UDZ-TE-17-5.1B
< IC >
IC901
8-759-366-34 IC   LC75824E
< LIQUID CRYSTAL DISPLAY >
LCD901 1-803-907-51 DISPLAY PANEL, LIQUID CRYSTAL
< LED >
LED901 8-719-061-16 LED   CL-190SR-CD-T (ILLUMINATION)
LED902 8-719-061-16 LED   CL-190SR-CD-T (ILLUMINATION)
LED903 8-719-061-16 LED   CL-190SR-CD-T (ILLUMINATION)
LED904 8-719-061-16 LED   CL-190SR-CD-T (ILLUMINATION)
LED910 8-719-078-19 LED   LWA673-R1S2*1 (LCD BACK LIGHT)
LED911 8-719-078-19 LED   LWA673-R1S2*1 (LCD BACK LIGHT)
LED912 8-719-078-19 LED   LWA673-R1S2*1 (LCD BACK LIGHT)
LED913 8-719-078-19 LED   LWA673-R1S2*1 (LCD BACK LIGHT)
< SWITCH >
LSW901 1-771-883-11 SWITCH, TACTILE (WITH LED) (OFF)
When indicating parts by reference
number, please include the board.
LSW902 1-771-476-11 SWITCH, KEY BOARD (WITH LED) (SOURCE)
LSW903 1-771-476-11 SWITCH, KEY BOARD (WITH LED) (SOUND)
LSW904 1-771-476-11 SWITCH, KEY BOARD (WITH LED) (MENU)
LSW906 1-771-476-11 SWITCH, KEY BOARD (WITH LED)
(MODE o)
LSW907 1-771-476-11 SWITCH, KEY BOARD (WITH LED) (ENTER)
LSW909 1-762-737-11 SWITCH, KEYBOARD (LED) (D-BASS)
LSW912 1-771-883-11 SWITCH, TACTILE (WITH LED) (6)
LSW913 1-771-883-11 SWITCH, TACTILE (WITH LED) (5)
LSW914 1-771-883-11 SWITCH, TACTILE (WITH LED) (4)
LSW915 1-771-883-11 SWITCH, TACTILE (WITH LED) (3)
LSW916 1-771-883-11 SWITCH, TACTILE (WITH LED) (2)
LSW917 1-771-883-11 SWITCH, TACTILE (WITH LED) (REP 1)
< RESISTOR >
R901
1-216-647-11 METAL CHIP
680
0.5%
1/10W
R902
1-216-647-11 METAL CHIP
680
0.5%
1/10W
R903
1-216-647-11 METAL CHIP
680
0.5%
1/10W
R904
1-216-651-11 METAL CHIP
1K
0.5%
1/10W
R905
1-216-655-11 METAL CHIP
1.5K
0.5%
1/10W
R906
1-216-655-11 METAL CHIP
1.5K
0.5%
1/10W
R907
1-216-659-11 METAL CHIP
2.2K
0.5%
1/10W
R908
1-216-663-11 METAL CHIP
3.3K
0.5%
1/10W
R909
1-216-667-11 METAL CHIP
4.7K
0.5%
1/10W
R910
1-216-671-11 METAL CHIP
6.8K
0.5%
1/10W
R911
1-208-806-11 RES-CHIP
10K
2%
1/10W
R912
1-216-647-11 METAL CHIP
680
0.5%
1/10W
R913
1-216-647-11 METAL CHIP
680
0.5%
1/10W
R914
1-216-647-11 METAL CHIP
680
0.5%
1/10W
R915
1-216-651-11 METAL CHIP
1K
0.5%
1/10W
R916
1-216-655-11 METAL CHIP
1.5K
0.5%
1/10W
R917
1-216-655-11 METAL CHIP
1.5K
0.5%
1/10W
R918
1-216-659-11 METAL CHIP
2.2K
0.5%
1/10W
R919
1-216-663-11 METAL CHIP
3.3K
0.5%
1/10W
R920
1-216-667-11 METAL CHIP
4.7K
0.5%
1/10W
R921
1-216-810-11 METAL CHIP
120
5%
1/16W
R923
1-216-812-11 METAL CHIP
180
5%
1/16W
R925
1-216-031-00 METAL CHIP
180
5%
1/10W
R927
1-216-037-00 METAL CHIP
330
5%
1/10W
R929
1-216-033-00 METAL CHIP
220
5%
1/10W
R930
1-216-812-11 METAL CHIP
180
5%
1/16W
R931
1-216-813-11 METAL CHIP
220
5%
1/16W
R932
1-216-813-11 METAL CHIP
220
5%
1/16W
R933
1-216-813-11 METAL CHIP
220
5%
1/16W
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