Schematic Diagram - Main Section (3/5) - Sony CX-LDB30 Service Manual

7-11. SCHEMATIC DIAGRAM — MAIN SECTION (3/5) —
MAIN BOARD (3/5)
HEAD
+
L CH
–
–
R CH
+
–
EH
+
W292
REG-OUT
GND
REG-IN
MAIN BOARD
8
(5/5)
(Page 37)
E51
REG-IC BOARD
W293
3
2
C137
1
CNA101 8P
VH(AC)
VL(AC)
GND(M)
E
VL(AC)
VH(AC)
AC-DET
PT BOARD
CN002
VSTBY
(Page 41)
P-ON
9
MAIN BOARD
(5/5)
(Page 37)
CX-LDB30/LDB50
1 2
PB L
C303
0.001
50V
JR301 0
C304
0.001
50V
PB R
PB2
PB2
0 0
1.1 1.1
REC/PB
SWITCH
Q309
0
2SK2541-T
0 Q308
C301
1.4 2SK2541 470p
50V
1.4
1.4
C323
CN302
0
22p
7P PH
50V
0
Q307
2.0MM
0 0
2SK2541-T
REC L
C319 C307 R301 R311
10p 50V 470p 50V 2.2k 1k
PB L
PB R
C308 R302 R312
470p 50V 2.2k 1k
REC R
C320
10p 50V
ERASE
3
2
1
FR-GND
*8 *1
C101,C102
D101
G5SBA60L-6088: LDB50 50V: LDB30
D101 63V: LDB50
GBJ4J10B9: LDB30
*8
C105 C106
LDB30
0.1 0.1
50V 50V
C101
REG-OUT
2200
GND *1
REG-IN
C107 C108 C102
0.1 0.1 2200
50V 50V *1
LDB30
D102
8
GBJ4J10B9
7
C109 C103
6 0.1 4700
50V 25V
5
4
C110
0.1
3
50V
C104
2 4700
25V
1
O-POWER
AC-DET V-STBY
MAIN BOARD
2
(1/5)
(Page 33)
3 4 5 6 8 7
D602
UDZSTE-174.7B
C604
0.1 16V B
C602 220 10V
Q313
RT1P141C-TP-1
4.6
SWITCH
1.3
D304 4.5
MC2840
R323
T112-1
4.7k
D301
MC2836
C364
47p
50V C318
CH 0
FUNC-GND
L301
OSC BIAS
Q305-Q309
REC/PB
SWITCH
R319
0
R313 22k C312
0.001
50V
R315 47k 0.3
M
0.3
BIAS
C309 C313
0.01 0.022
50V 50V
R316 47k
C314
R314 22k C311
0.01
0.0022 50V
50V
BIAS
OSC
C363
0.1 16V
ERASE
R155 R156
470 1/2W 470 1/2W
R157 R158
470 1/2W 470 1/2W
IC101 IC102
IC101
TA7812S
12V REG
19.4
12
1 2
3
C115 C116
IC102
0.1 0.1
25V 16V
TA7807S
CD REG.
1
12
R110
W701
10k
1P
WIRE ASSY
E
Q101
0.6
2SC3052F-T1-LF
EP101
REPLAY DRIVE
TERMINAL,EARTH
0
SHASSIS GND
D120 D121 D122
1N4002B 1N4002B 1N4002B
C114
470 25V
V-STBY
35 35
9 101112
Q311
KTA1266GR-AT
7
0.3
7V
D302 BIAS
JW
SWITCH
6.5
D303
R322
1SS355TE-17
10k
Q312
RT1N144C-
TP-1
0.3
0.2
R117 R119
BIAS
4.7 4.7
0.2
SWITCH
R159
2.2k
7V
FR-GND
FUNC-GND
CD-D-GND
P-GND P-GND
A-GND A-GND
L-SPG L-SPG
R-SPG R-SPG
CD-P-GND CD-P-GND
+VH +VH
-VH -VH
+VL +VL
-VL -VL
7C REG VDD REG
+VM
Q102 2SB1375 Q104 KTA1273-Y-AT
7 3.3 3.3
3.3
R112
Q103
47k POWER
6.4
R115 3
2SC3052F-T1-LF
47k CONTROL
6.4
R111 R113
VDD REG
7 470 100
2 Q105
3.6
RT1N144C-TP-1
3
3
POWER 0.3
2.9
CONTROL
D107
MC2840-T112-1
CX-LDB30/LDB50
13 141516 17
10
31
MAIN BOARD
(2/5)
(Page 34)
I-PRO
Q106
KTC3198GR-A
11.1 8.9
VCC REG
9.7
46
47
48
49
50
51
52
53
54
55
D108
1SS355TE-17
MAIN BOARD
12
(4/5)
(Page 36)
56
V-STBY 57
58
NO MARK: FM