Sony XR-CA420N Service Manual ▷ View online
21
XR-CA420N
*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)
22
XR-CA420N
SECTION 7
EXPLODED VIEWS
MG-25F-136
14
13
16
19
20
1
2
5
6
8
7
10
12
9
3
4
front panel assy
main board
#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.
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-3370-437-3 LOCK ASSY
3
3-027-437-51 DOOR, CASSETTE
4
3-935-003-01 SPRING, TORSION
* 5
3-033-846-02 INSULATED PLATE
* 6
3-046-991-01 SPACER (COVER R)
* 7
3-046-990-01 SPACER (COVER L)
* 8
3-040-995-03 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
3-012-859-21 CAP (25), RUBBER
16
3-935-014-01 CUSHION (U)
19
3-224-862-04 PANEL, SUB
20
3-009-813-53 CHASSIS
F781
1-532-877-11 FUSE (BLADE TYPE) (AUTO FUSE) (10A/32V)
TU1
1-693-493-21 FM/AM TUNER UNIT (FAE347-S20)
#1
7-685-792-09 SCREW +PTT 2.6X6 (S)
#2
7-685-791-09 SCREW +PTT 2.6X5 (S)
#3
7-685-794-09 SCREW +PTT 2.6X10 (S)
• Screws and washers cannot be re-
used.
Please replace to brand-new ones
once screws and washers are re-
Please replace to brand-new ones
once screws and washers are re-
23
XR-CA420N
7-2.
FRONT PANEL SECTION
51
52
53
54
56
55
57
68
64
58
59
60
65
66
67
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
3-224-867-03 BUTTON (PRESET/U)
(ATT. SENS. 1. 2. 3. 4. 5. 6. BTM. DSPL)
52
3-224-869-11 BUTTON (RELEASE/U) (RELEASE)
53
3-231-816-01 SPRING (RELEASE)
54
3-224-860-31 PANEL, FRONT
55
3-042-504-01 EMBLEM (NO.2.5), SONY
56
3-224-863-21 BUTTON (+/-)
57
3-224-865-01 BUTTON (L/U) (SRC. MODE. SEL)
58
3-224-864-21 BUTTON (S/A)
(+ > M. SEEK AMS. m . -)
* 59
3-224-896-02 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
3-224-861-02 PANEL, FRONT BACK
65
3-224-868-03 BUTTON (EJECT/U) (Z)
66
3-224-866-01 BUTTON (R/U) (MBP. D. OFF)
67
X-3378-490-2 CASE (PANEL) ASSY
68
A-3315-583-A PANEL COMPLETE ASSY, FRONT
LCD901 1-804-298-11 DISPLAY PANEL, LIQUID CRYSTAL
#4
#4
7-685-106-19 SCREW +P 2X10 TYPE2 NON-SLIT
Ver. 1.1
24
XR-CA420N
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
151
A-3291-667-A CLUTCH (FR) ASSY
152
3-019-130-01 LEVER (LDG-A)
153
3-019-131-05 LEVER (LDG-B)
154
3-228-690-01 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
161
3-933-346-01 CATCHER
162
3-933-344-22 GUIDE (C)
163
3-927-100-21 SCREW (+PS 2X10), 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)
#6
7-624-104-04 STOP RING 2.0, TYPE -E
#7
7-627-553-17 PRECISION SCREW +P 2X2 TYPE 3
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