Ref 7521A Schematics - Infinity 7520a Service Manual

Power Amplifier
C14
47/16V
C17
R11 R13 R15
100/16V
10K 10
4.7K
A1266GR
Q11
A1266GR
R14
R12
C12
10K
3.9K
100/16V
C11
47/16V
Q21
C3198BL
C22
104P
B+SW
R63
430K
C800
D02
R04
10/16V
REM
N4004
56K
C801 R05
8.2K
473P
R60
10.5KF
R62
C60
4.7KF
104P
D04
1SS133
16 15 14 13 12 11 10 9
Q23
U01
R41
A1266GR
TL494CN
220/0.5W
D03
Q12
1 2 3 4 5 6 7 8
1SS133
Q33
TH01
A1266GR
R21 R90 R22 R51
50KTH
C13
24K 47K 24K 220/0.5W
R25 100/16V
68K
C21
102(M)
D11
R16
750 1SS133
Q90 R92
C3198GR 1K
PRT-LED
R91
22K
R32 Q22
R31
A1268GR
22K
1K
C15
R33
C16
R34
10/25V 33K 47/25V
15K
R35
PROT
15K
REF 7521a SCHEMATIC PAGE 1
Q01
A1023Y
R03
10/0.5W
R02
R01
4.7K
4.7K
Q02
C3198GR
Q44
R44
FQP50N06
47
Q43
R43
FQP50N06
47
R42
1K
C03
104P
Q53
R53
FQP50N06
47
C05
2200/25V"WL"
Q54
R54
R52 FQP50N06
47
1K
22
L03
FH01
CL-300
30A
D01
C01
1N5404
105M
D51
FR154
D52 C57
47/50V
FR154
D53
FR154
C67
D54 47/50V
FR154
T01
5T:12T
D41 L01
C53
(0.7x9):(0.7x4)
YG225D2 CL-500
473P
C52
C51
R30 3300/35V
1000/35V
100/2W
C08
222(M) C61
C62
1000/35V 3300/35V
L02
C63
D42
C04
CL-500
YG225D2
473P
2200/25V"WL"
C33 W1
473P CASE GND
C31 C32
R61
10K
105(M)TL 105(M)TL
Reference 7521a
B+
12V
VCC2
VEE2
VCC
VEE