Service Manuals, User Guides, Schematic Diagrams or docs for : . Various SM scena Crest Crest-CA12 pwramp
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3097.SCH-1 - Fri Aug 29 15:32:24 2003
3097.SCH-2 - Fri Aug 29 15:32:58 2003
8 7 6 5 4 3 2 1
SERVO SEND CH A
+HI RL
VR SEND B
1 VR GND -15.5V R174
2 VR RET B STEREO/BRIDGE +15.5V R139
3 825K/1% 1.5K/1W
C112
IC103C
J7A LM339D R130
22-29-2031 SW1 R138
- 8
3
2
1
14 0.1/200V
VR RET A 33.2K/.1%.5W
+ 9
1 VR GND 10K R159
2 VR SEND A R132 576/1%
3 C&K TS01 R2
33.2K/.1%.5W
J7B C114 Q111
10K/1% MMBT5551
22-29-2031
- 6
TO DISPLAY PCB R125
7 R141 243K/1% 0.1/50V
D D
+ 5 2K21/.1% Q109
R143 2SC3645
IC3B +15.5V D122 2SC3645
+15.5V 2K29/0.1%
NJM5532M 1N4148
R129 Q106
+20.5V
R1 R120 TO MODULE A R157 R176
Q108A
3.9K MMPQ6700
R13 10K/1% 576/1% 68.1/1% MMPQ6700 47
RETURN FROM VR
OUTPUT TO VR R140
220K 825K/1% Q108B
3
C2
R144
5 R142 D123 2K29/0.1% C117 R161 R167 D100
+
2 2K21/.1% 1N4148 68.1/1%
68.1/1%
C8 C10 0.1/25V C12 4 R171
R21 - IC103A R126 +LO RL
22/35V 68.1/1% HER155
LM339D 243K/1% 1 +HI RL
12
10K 2 +IGM
D4 33pF/50V 470pF/50V 2.2/5%/63V D121 R133 3 +CLIP
1N4148 R23 IC103B
1N4148 C116 4 +VA B
LM339D 33.2K/.1%.5W Z100 MLL4752 R178
R3 R9 5
8
- SIG IN IC1A -15.5V - 6 +VA C
NJM5532M 2.7K +20.5V ATT. VOLTAGE R163 R164 6 GND
3 1 8.25K/1% 8.25K/1%
10K/1% 48.7K/1% R131 2.7K 7
2
+ GND
1 C14 + 7
6 R11 2 33pF/500V 8 NOT USED
D2 D6 100K 2.2/5%/63V 33.2K/.1%.5W 9
8
- - FB
3 1N4148 1N4148 7
+ SIG IN R5 R19 IC3A R128 10 FB
5 2
J1 + - 11
4
1 -VA C
NC3FD 10K/1% IC1B 220K NJM5532M 10K R179 12
3 D116 -VA B
NJM5532M + 13
1
1N4148 -CLIP
ATTENUATOR DRIVER 11K/1%/1W 14 -IGM
R7 C5 D8 D15 D16
15
4
33pF/50V 1N4148 1N4148 1N4148 CURRENT LIMITER -HI RL
48.7K/1% 16
C1 -LO RL
-20.5V 17
D117 R180
J101
0.1/25V 1N4148 CREST # ?
BALANCED INPUT/GAIN CH A -20.5V SERVO/HIGH PASS 576/1%
R155 R175
J3 68.1/1% C110 0.001/50V 1.5K/1W
PHONEJACK STEREO OTA CH B
R172 R149
+15.5V MMBT5401 68.1/1% 56K/3W
R35 R33 R37 R38 R36
C19 Q105 D101
1K/1% 1K/1% 576/1% 576/1% 1K/1% R162 R168
OTA CH B
C16 0.22/16V 68.1/1%
+15.5V 68.1/1%
0.1/25V
R153 HER155
IGM VALUES W ILL BE CONFIRMED AFTER PROTO BUILD R151 100K R158 Q108C
1M MMPQ6700 R177
MMPQ6700
D114 68.1/1%
R29 R30 47
2.7K 2.7K 11 1N4148 C118 Q108D
R7-R9 IS BASED ON 700 WATTS @ 8 OHMS +
13
10 D115 2SA1415 Q110
C R27 R31 - 2SA1415 C
1 16 OTA CH A IC103D 1N4148 22/35V
+15.5V -15.5V OTA CH B 2 15 LM339D Q107
10K 10K
3 14 R152 R154
GND -20.5V 4 13 Q112
100K 1M MMBT5401
5 12 C20 Z101 MLL4752
6 11 0.22/16V
7 10 C115
8 9 -15.5V R160
D19 D20
OTA CH A 576/1%
IC4 MMBT5551 0.1/50V
+20.5V NE5517AD
OTA CH A 1N4148 1N4148 Q104
C113
10
12
14
16
18
20
2
4
6
8
J8
R28 R34 R32
CA-20H-2B-S
TO PWR SUPPLY 47K 1K/1% 47K R156
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