Power Amplifier - JBL BP1200.1 Service Manual

BP-1200.1
Input/Crossover/Power Amp Rev1
A
RCA01-A
KJB554S
R102 C101
100KF
22/16V
R101
R103
10K
100KF
RCA01-B
R105
KJB554S
100KF
R104
C102
10K R106
22/16V
100KF
B
RCA01-C
KJB554S
R602
100KF
R601
10K R603
100KF
RCA01-D
KJB554S
R605
100KF
R604
R606
10K
100KF
D101
1N4148
JA01
R112
MA-TB-65-1043-0
390KF
R111
C
10K
R113
390KF
R115
390KF
R114
10K
R116
D102
390KF
1N4148
D601
1N4148
RCA02
R612
MA-TB-65-1043-0
390KF
D
R611
10K
R613
390KF
R615
390KF
R614
10K
R616
390KF
D602
1N4148
R140 R141
2.2KF
FB-
C140
103M
E
R143
R144
2.2KF
FB+
C141
103M
R154
-12V
R147
1K
3
+
A
-
2
R148
100K
C198
104"MLCC"
F
R153
L160 47K
100uH
+12V
16
U171
5
U106
5 ~ 5.9V
7
10 ~ 6.3V
12
11 ~ 6.1V
11 10
16 ~ 12V
R161
1M
R162
1K
X101
2560KHz
C160 C161
47P 47P
G
1
C103
100P
C190
C192
104P
104P
47K
R120
R121 R125 R126
6
10KF 10KF 2.2K
-
7
+
U101-A 9
5
-
8
+
C104 U102-A
10
100P
R122
C105
104M
R123
47K
2
10KF
-
1
+
U101-B
3
C191
R124 104P
10KF
C183
104P
B
R142
75KF 4.7KF
6
-
7
+
5
75KF
U105-D
R146
10K
R145
4.7KF
R150
C142
10
330P
47K
R149 U105-A
U104-B
10K
1 2
1
3
R151
82K
C200
C196 R152
22/16V
4.7K
104P VR104
5K
C197
C199
22/16V
104P
C164
C163
C184 330P
104P
47/25V
R168
R163
1M
1.5K
C162 R166 Q101
R169
10K
103M C3198GR
22
6
- 7
+
5
U105-B
C138
R164 R165 R167
4.7K 10K 330P
10K
2
U102-B
C106
VR101
100/16V
5
20KBx2 7
R131
6
R128
5.6K
R127
R129
100K
300
110KF
C108
C118
22/25V 47P
R130
3.3KF
+12V
R173
R174
22/0.5W
10K
R175
2.2K
U107
KIA431
R176
4.7K
12.0
C171
C170
104P
47/16V
R155
C176
1 14
2.2K
104"MLCC"
8
+ 13
11
3
U108
- 9
C168
4 10
105M
C291
6
104P
C172 C173
104P
47/16V
R177
22/0.5W
-12.0
-2.4
U109
KIA431 C175
104P
C167
104"MLCC"
R172 R171
C166
R170
10K
100
47P 1K
3
30
VARIABLE LPF
(32 - 320Hz;12dB/oct)
C131
124M
VR102-B
VR102-A 50KC
U104-A
50KC
3
1
R132
5.6K
2
R133
C132
683(M)
VR103
B20K
C135
183M
R136
470K
R201
2.2K
R231
2.2K
3.4
Q102
C1027Y
C174
104P
+3V
C177
C178
104P 47/16V
R179
R180
1K
1K
R301
2.2K
-2V
C179 C180
104P
47/16V
Q103
A1023Y
R178
10K
R331
2.2K
-12V
4

Power Amplifier (

VARIABLE BASS BOOST
(50Hz;0 - +6dB/oct)
U103-A
3
1
2
47P
1K
C107
15K
R134
C134
R135
104M 12K
C194
U103-B
104P
5
7
6
C195
104P
Q205
C1027Y
R202
Q204
910F
C1027Y
20.4
R205 R206
1 1
Q201
Q202
C3503
20.6
A1023Y
Q203
A1023Y
R203
220F
R207
R237
Q233
R233
Q232 C1027Y
120F
C1027Y
R235 R236
Q231
1 1
A1381
104P
Q234
R232 A1023Y
910F
Q235
A1023Y
R302
910F
Q305
C1027Y
20.4
Q304
C1027Y
R305 R306
Q301
1 1
C3503
Q302
0.9
A1023Y 20.6
Q303
R303 A1023Y
R307
220F
R337
R333 Q335
120F
Q334 C1027Y
-0.5
C1027Y
R335 R336
Q331
1 1
A1381
0.3
Q332
R332
A1023Y
910F
Q333
A1023Y
5
2.2
2.2
C24
2.2
2.2
C34
104