Power Amp Schematic (Left Channel) - Cambridge Audio 640A Service Manual

2.2n PPE Bypass (640A only)
C49
C18
R35
4k7 8th
CN2
10u NP 16V
R36
R37
1
33k 8th
2 330k 8th
H2 2.54mm
SIGNAL IN
R40
C19
10R 8th
47n poly
To enhance viewing, please print to A3
Cambridge Azur 640A Integrated Amplifier
R27
R28
150R
150R
Q16
R29
MPSA92/93
1k
Q15
Q14
MPSA92/93
MJE350
R42
10k 8th
R31 R30
C22
100R 8th 100R 8th
R39
47u 50V
10k 8th
C77
R53
Q7 Q8
150R 8th
22p
MPSA92/93 MPSA92/93
R102
R103 33k
150R R34
C2 C9
1k 8th
C8
100p poly
470p
33p
C17
100u NP 16V
Q10
Q9
MPSA42/43
signal1 MPSA42/43
signal1
R14 R15
47R 8th 47R 8th
AP12707/6 Power Amp Schematic (Left Channel)
+45V
R43
150R
WIRE LINK
C66
220u 50V
1
R99
Q18
100R
MPSA42/43
C14
15n poly
R119 C13
47R 8th 10u NP 16V
LK6
LINK
R21
100R
Q12
Q11
MJE340 5
MJE340
Q13 R16 R19
MPSA13 8k2 0.66W 18k
D1
R18
ZEN 3V3
R17 1k
100R
GND
R41
WIRE LINK
150R
C7
-45V
220u 50V
C65
220u 50V
+45V2
WIRE3
U3
SAP15N
C
B
D4
IN4004
S
RE1
4
D E
R100
0.22R 3W
J6
RO
R116
2
47R
TERMINAL
R22
To Loudspeaker PCB
0.22R 3W
R44
4R7 3W
J8
E
WW
D
C24
TERMINAL
100n
LK8
S
RE2
2
LINK
D2
IN4004
B
C
U2
SAP15P +45V2
C46
100n 160V Poly
-45V2
C11
220u 50V
-45V2
WIRE4
19