A B C D E F G H
1 1
THERMAL FAN CONTROL CURRENT LIMIT
VREF +AUX
Q47
SW B+ B+ R160
Q57 PMBTA56
D33 100
PMBTA56
R181
CLIMIT
.
CLIMIT
.
270 R168 C79
R126
RED
C81
4.7K 10K 10uF/100
.
0.1uF
R179
2 2
D9
.
3.3K RED
R169
R180
Q49
.
PMBTA06
1.0K
A
Q23
R162
TIP102
150
R161
B
.
470
TURN ON DELAY POWER SUPPLY LEDS
+15 +RAIL +AUX
R187
SW B+
.
100 D13 D14 D16
YELLOW GREEN RED
U2
INPUT MUTE CONTROL OP AMP PS FILTERS
R72 R73
1 8
5.6K 6.8K
GND VCC
U3 R47 R49
. .
2 7
TRIG DISCH +15
MOC206 +RAIL
R71 R82 R85
2.2K 2.2K
3 6 1 6
3 3
OUT THRES +15
1.0K 5.6K 6.8K
Q20
4 5
RESET CONT
LED2
PMBTA56 R91
10
R81 R83 R86
U6
2 7 5 R129
R1
1.0K 5.6K 6.8K MOC206
U4.8
.
1 6
555
5.6K
50K
Q44
MUTE
R95 R84 R87
LED1
SST109
R116
1.0K 5.6K 6.8K 2 7 5
100K
R96 R97 R99
1.0K 5.6K 6.8K
-RAIL -15
U4.4
R98 R100 -15
R108
5.6K 6.8K
10
-15
D20 D21
D19
GREEN RED
YELLOW
-15 -RAIL -AUX
+/-AUX REGULATORS +/-15V REGULATORS
P12
4 4
+ LUG
B+ U1
Q8
7805T
R13
TIP41C
C70 C71 C55 C66
C6 C7 C8 C9 C10 C16 C17 C18 C19 C20 C56 C57 C58 C59 C60 C67 C68 C69 C5 C15
1 3
+UNREG VI VO +AUX +RAIL +15
.
G
470uF 470uF 470uF 470uF 470uF 470uF 470uF 470uF 470uF 470uF 470uF 470uF 470uF 470uF 470uF 470uF 470uF 470uF 470uF 470uF 470uF 470uF 470uF 470uF
100/2W
2
R15
D15
+RAIL
P5 .
- LUG
BYD17G
100/2W
U8
D28
MOC206
R178 R135
6 1 TS1
VREF +RAIL +RAIL
100 100
IN4759A
R64 D6
Q38
B+ 80N06 80N06 80N06 80N06 80N06 80N06
FEEDBACK R111
.
PMBTA06
5 7 2
. Q50 Q52 Q53 Q54 Q55 Q51 68/2W MUR160 FB5
.
R166 10 R121
CLIMIT R134 +UNREG
. T1
470K 2.2K
C72
D27
-RAIL
10
10uF/50
B+ C27 C11
Q48
SW B+
MUR160
PZTA06 10uF/160 10uF/160
Q19
PZTA56
5 5
B+ R177
D7
C61 C76 D23
.
0 -RAIL
10uF/160 10uF/160
R44
R170
TS2 MUR160 FB6 BYD17G
VREF .
U7 Q56
.
1
R131 150
-UNREG
2.2K PZTA56
10K
D26
2 3
R119 UC3525 R110 G
-UNREG VI VO -AUX
B+
1 - VREF
16 80N06 80N06 80N06 80N06 80N06 80N06
. .
10K
U9
Q1 Q3 Q4 Q5 Q6 Q2 68/2W
2 15 MUR160
+ VCC 7905T
R46
3 14
SYNC OUT B
C21 FB4 FB3
D2
. .
10uF/50 10 R136
4 13
OSC OUT VC +RAIL
R45
Q16
2.2K .
5 12 BYW29F
CT GND
PZTA06 C22 C23 C24 C25 C14
FB9 FB10
D32
. . 100/2W
6 11
REMOTE
RT OUT A
1000uF/63 1000uF/63 1000uF/63 1000uF/63 10uF/100 R137
P10
R55 R164 BYW29F
7 10
DIS SHUT R36 -RAIL -15
. Q18 . .
FB1 FB2
D1
. .
2.2K 100
.
8 9 Q58
100/2W
SFT STRT COMP 0
C62 C63 C64 C65 C73
L1
C26 BYW29F TIP42C
R10
R56
Q7
2.2K 1000uF/63 1000uF/63 1000uF/63 1000uF/63 10uF/100
FB8 FB7
D31
0.1uF . .
150
PZTA56
R132 -RAIL
.
BYW29F
R120
33K
.
270/2W
6 Title 6
D7401 MAIN BOARD
Size Number Rev
D 500-7401-100000 2
Date Tue Jul 02 2002 Drawn by
SCHWITALLA
Filename D74012.S01 Sheet 1 of 2
ABCDEFGH
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R11
R65
220/1W
2.2K
P6
FAN
C29
10uF/50
C1
R12
R38
6.8K
100uF/25
D8
720
R57
1N4738A
R3
C3
33K
100uF/25
R128
100K
D3
C4
.
C51
.
0.01uF
BYD17G
10uF/50
R2
1.0K
R37
R48
R50
100K
1.0K
470K
.
.
C40
0.1uF
.
47K
47K
47K
47K
R141
R51
R156
R54
R127
470K
C42
0.1uF
R16
3.3K
3.3K
R14
C33
10uF/50
D4
C32
10uF/50
1N4744A
C13
C12
10uF/50
C48
0.1uF
C44
10
10
10
10
10
10
C47
R109
10uF/50
R171
R173
R174
R175
R176
R172
C78
C77
0.01uF/Poly
2.2/2W
10uF/100
10uF/100
10uF/50
D29
C43
1N4744A
10uF/50
R63
.
R182
R183
3.3K
3.3K
R4
R6
R7
R8
R9
R5
10
10
10
10
10
10
C28
0.01uF/Poly
2.2/2W
1.0K
8.2K
10K
C74
C80
C75
C54
C52
R133
R163
C53
R165
0.1uF
0.1uF
10uF/50
22OOpF/Poly
1000pF/Poly
47uF/25V
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A B C D E F G H
1 1
INPUT BOARD CONNECTIONS
POWER TO INPUT BOARD TO MAIN XOVER TO AUXILIARY XOVER FROM AUXILIXRY XOVER
P1:1 P3:1 P4:1 P15:1
1 1 1 2 1 1 3
P2:1 P2:2 P2:3
+15
P1:2 P3:2 P4:2 P15:2
2 4 2 5 2 2 6
P2:4 P2:5 P2:6
P1:3 P3:3 P4:3 P15:3
3 3 3 3
2 2
P1:4 P3:4 P4:4 P15:4
4 4 4 4
P1:5 P3:5 P4:5 P15:5
5 5 5 5
+15 +15
-15
P1:6 P3:6 P4:6 P15:6
6 6 6 6
-15 -15
D5
MMBD1401
+AUX
R68
+15
R59 +RAIL
100
100
C2
3 3
820pF 100V
+15
Q17 Q21
Q12
.
D11 R60 BF722 BF722
R67
MJE15032
10K
Q9 Q10 Q11 Q13 Q14 Q15
Q25 Q27
R118
LL4148 470
.
R39 R52
47K
PMBTA56 PMBTA56
2SC5200 2SC5200 2SC5200 2SC5200 2SC5200
22 22 R40 2SC5200
D10 R58 R53 0
Q30
22 22
LL4148 PMBTA56
R117
Q29
Q26 Q24 Q22
C30
20K
R75
BF722
BF722 BF723 BF723
C46 C41
D17 22pF
10K
220pF 47pF
P14:1 R104
R107
A
1 LL4148
R26 C31
R130 R43
. . . .
1.2K
0 Q31 R76
220uF/25
10K 47K
D12
. . . 47K
PMBTA56
R102 R80 R79
LED1
R115
-15
C39
10K 20K 10K 220K P13
R74 R66
U4.4
P14:2 R103 R92
R106 120 120 U4
-15
4
2 2 6 47pF 1MOC206 6
Q28
. . .
R78 C35 R114 P9
CH1 OUT CH1 OUT
0 CH1 CURRENT R69
1 7
10K 10K
220
. . . .
U5:A U5:B 2.2K 100
3 5 4.7uF/POLY R90
P7
R94
4560 4560 2.7K/1W
R88 2 7 5 Q33
8 R186 C45 +15
R89 R101
240
47K 10
R105 R93 220pF 120 120
U4.8
LED2
100 100
4 C36 4
C34
Q37 Q36
R77
SST109 D18 0.1uF/POLY
PMBTA06 0.1uF
47K
D22
MUTE B
LL4148
R113
C49 P8
10K
Q39 Q42
Q34 Q35 22pF
BF722 BF722
BF723 BF723
P11
D24
Q40 R124 R123
LL4148 PMBTA06
R122
22 22 R148 R184
R112
22
22 Q59 Q60 Q61 Q63 Q64 Q65
.
D25 470
0 2SA1943 2SA1943 2SA1943 2SA1943 2SA1943 2SA1943
R62
Q62
LL4148 MJE15033
Q46 Q43 .
10K
Q41 Q45
-15
PMBTA06 PMBTA06 C82
BF723 BF723
R151 R125 820pF 100V
-15
-RAIL
100 100
D30
-AUX
MMBD1401
5 5
6 Title 6
D7401 MAIN BOARD
Size Number Rev
500-7401-100000 2
D
Tue Jul 02 2002
Date Drawn by SCHWITALLA
D74012.S02 2 2
Filename Sheet of
ABCDEFGH
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C50
0.1uF
47
150
R41
Q32
R42
R17
R18
R19
R20
R21
R22
R23
R24
R25
R27
R28
R29
R30
R31
R32
R33
R34
R35
0.82/2W
0.82/2W
0.82/2W
0.82/2W
0.82/2W
0.82/2W
C37
0.1uF
C38
0.1uF
.
.
200
.
.
R61
.
.
470K
.
R70
47
150
R138
R139
R140
R142
R143
R144
R145
R146
R147
R149
R150
R152
R153
R154
R155
R157
R158
R159
R167
R185
0.82/2W
0.82/2W
0.82/2W
0.82/2W
0.82/2W
0.82/2W
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