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CX-LDB30/LDB50
7-12. SCHEMATIC DIAGRAM — MAIN SECTION (4/5) —
MAIN BOARD (4/5)
46
47
48
49
50
51
52
53
54
55
MAIN BOARD
D110
12
MC2838-T112-1
(3/5)
(Page 35)
E51
56
D111
57
V-STBY
MC2838-T112-1
58
CX-LDB30/LDB50
Q201,Q203,Q205
VP SWITCH
*2
C201, C202
50V: LDB30
63V: LDB50
Q202,Q204,Q206
–VP SWITCH
A-GND
L-SPG
R-SPG
FAN-GND
+VH
-VH
+VL
-VL
+VM
+VM
PROTECT
DET
2.7
PROTECT
Q110
DET
2SA1235TP-1EF
Q108
2.7
2SC3052F-T
0
D112
052F-T1-LF
MC2836
3.3 3.3
R139
3.3
1k
0
0
R136
D114
MC2838-T112-1
C130
47
25V
0
3.3
R140
1k
Q109
D113
D115
2SC3052F-T1-LF
MC2836
MC2836
PROTECT
DET
DC-DET
MAIN BOARD
11
(2/5)
(Page 34)
3233
R203
D209
1SS355TE-17
470
+VH
Q203
2SC3052F-T1-LF
R220
2.2k
D205
MC2838-T112-1
*2
42.5
C201
14.4
47
R201
4.7k
42.5
Q201
14.4
42.5
2SJ599-Z-E2-AZ
LDB50
D201
0
R205
R228
RK46LF-T2
100k
47k
+VL
JW205
17.9
R207
D211
LDB30
10k
RK36LF-B3
Q206
Q205
18.6
14.4
2SC3052F-T1-LF
2SA1235TP-1EF
-18.8
-14.4
D212
RK36LF-B3
JW206
-19.3
-VL
R206
R208
R229
D202
100k
1k
4.7k
RK46LF-T2
0
LDB50
*2
-42.7
C202
-14.4
47
-14.4
-42.7
R202
4.7k
Q202
2SK3377-Z-E2-AZ
Q204
-42.5
2SA1235TP-1EF
D206
MC2836
R230
2.2k
R204
R223
470
-VH
R224
D210
1SS355TE-17
A-GND
L-SPG
R-SPG
FAN-GND
+VM
36
36
343536 3738394041
4243 4445
J201
TERMINAL, 4P SP
L-SPG
C231
0.01
25V
R-SPG
R217
4.7k
L-CH
C203
0.001
R-CH
50V
R215
4.7k
SHASSIS GND
+VP
A-GND
Q115
-VP
KTC3198GR-A
12
12
R216
12
Q114
4.7k
2SC3052F-T1-LF
L-CH
12
12
12
R-CH
D118
R218
12
MC2838-T112-1
4.7k
R152
12
1k
12
12
22k
R231
4.7k
0
22k
R232
4.7k
R146
47k
R222
100k
R221
100k
Q112-Q115
FAN DRIVE
NO MARK: FM
+
(L)
SPEAKER
+
(R)
CN291
3P
1
+B(FAN)
FAN
2
GND
3
NC
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