Sony XR-CA420 Service Manual ▷ View online
25
XR-CA420
*1 Loading motor control
STOP
LOADING/
FORWARD
EJECT/
REVERSE
BRAKE
LMLOD (pin il )
“L”
“H”
“L”
“H”
LMEJ (pin o; )
“L”
“L”
“H”
“H”
Terminal
Mode
Pin No.
Pin Name
I/O
Description
89
LMLOD
O
Motor drive signal output to the loading motor drive (IC351) “H” active
(For the loading direction and forward side operation) *1
(For the loading direction and forward side operation) *1
90
LMEJ
O
Motor drive signal output to the loading motor drive (IC351) “H” active
(For the eject direction and reverse side operation) *1
(For the eject direction and reverse side operation) *1
91
TAPEON
O
Power on/off control signal output of the loading motor drive (IC351) and capstan/reel motor
(M901) “H”: motor on
(M901) “H”: motor on
92
CMON
O
Capstan/reel motor (M901) drive signal output terminal “H”: motor on
93
NOSESW
I
Front panel block remove/attach detection signal input
“L”: front panel is attached, “H”: front panel is removed
“L”: front panel is attached, “H”: front panel is removed
94
—
O
Not used (open)
95
DAVSS
—
Ground terminal (for D/A converter)
96 to 99
—
O
Not used (open)
100
DAVCC
—
Power supply terminal (+5V) (for D/A converter)
26
XR-CA420
SECTION 7
EXPLODED VIEWS
MG-25F-136
14
13
16
19
20
17
1
2
5
6
8
7
10
12
9
3
4
Front panel assy
#1
#1
#2
F781
TU1
#3
#3
#3
#3
#1
#1
7-1.
CHASSIS SECTION
• Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
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.
electrical parts list.
NOTE:
• -XX and -X mean standardized parts, so they
may have some difference from the original
one.
one.
• Color Indication of Appearance Parts
Example:
KNOB, BALANCE (WHITE) . . . (RED)
KNOB, BALANCE (WHITE) . . . (RED)
↑
↑
Parts Color Cabinet's Color
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
1
3-042-244-11 SCREW (T)
2
X-3370-437-1 LOCK ASSY
3
3-027-437-51 DOOR, CASSETTE
4
3-935-003-01 SPRING, TORSION
* 5
3-033-846-01 INSULATED PLATE
* 6
3-046-991-01 SPACER (COVER R)
* 7
3-046-990-01 SPACER (COVER L)
* 8
3-040-995-01 COVER
9
A-3340-040-A MAIN BOARD, COMPLETE
10
3-376-464-11 SCREW (+PTT 2.6X6), GROUND POINT
* 12
3-040-998-01 BRACKET (IC)
* 13
3-224-897-11 HEAT SINK
14
3-012-859-01 CAP (25), RUBBER
16
3-935-014-01 CUSHION (U)
17
1-776-206-21 CORD (WITH CONNECTOR) (POWER)
19
3-224-862-01 PANEL, SUB
20
3-009-813-52 CHASSIS
F781
1-532-877-11 FUSE (BLADE TYPE) (AUTO FUSE) (10A)
TU1
1-693-493-21 FM/AM TUNER UNIT (FAE347-S20)
27
XR-CA420
7-2.
FRONT PANEL SECTION
51
52
53
54
56
55
57
64
58
59
60
65
66
61
63
62
not supplied
(KEY board)
(KEY board)
LCD901
not supplied
not supplied
#4
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
51
3-224-867-01 BUTTON (PRESET/U)
(ATT. SENS. 1. 2. 3. 4. 5. 6. BTM. DSPL)
52
3-224-869-01 BUTTON (RELEASE/U) (RELEASE)
53
3-231-816-01 SPRING (RELEASE)
54
3-224-860-21 PANEL, FRONT
55
3-042-504-01 EMBLEM (NO.2.5), SONY
56
3-224-863-01 BUTTON (+/-)
57
3-224-865-01 BUTTON (L/U) (SRC. MODE. SEL)
58
3-224-864-01 BUTTON (S/A)
(+ > M. SEEK AMS. m . -)
* 59
3-224-896-01 PLATE (LCD), GROUND
60
1-694-781-11 CONDUCTIVE BOARD, CONNECTION
* 61
3-224-871-11 ILLUMINATOR (LCD)
* 62
3-224-870-01 PLATE (LCD), LIGHT GUIDE
* 63
3-224-895-01 REFLECTOR (LCD)
64
3-224-861-01 PANEL, FRONT BACK
65
3-224-868-01 BUTTON (EJECT/U) (Z)
66
3-224-866-01 BUTTON (R/U) (MBP. D. OFF)
LCD901 1-804-298-11 DISPLAY PANEL, LIQUID CRYSTAL
Ver. 1.1
28
XR-CA420
7-3.
MECHANISM DECK SECTION
(MG-25F-136)
(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
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