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