Cambridge Audio 540A V2 - Input PCB Schematic (Headphone Driver)

Cambridge Audio Azur 540A V2.0 Amplifier
AP17649/5 Input PCB Schematic (Headphone Driver)
Main
+15V
-15V
R54
10R
R53
10R
6
5
7
U1:B
NE5532N
R8
1R
R6
1R
R41
2k7
R40
3k3
R43
560R
R42
560R
R39
5k6
R7
5k6
Q6
BD139
Q5
BD139
Q4
BD140
R9
180R
Main
RSW1
RSW2
R
L
GND
2
3
1
7
8
CN1
HEADPHONE JACK
Main
C96
47N 63V PE
C95
47N 63V PE
2
3
1
84
U1:A
NE5532N
R3
1R
R1
1R
R46
2k7
R45
3k3
R48
560R
R47
560R
R44
5k6
R2
5k6
Q3
BD139
Q2
BD139
Q1
BD140
R4
180R
Main
GENERAL NOTES
1.
2.
3.
4.
5.
R11
10R 2W
R12
10R 2W
RCh HP Out
R52
100R
R51
No Stuff
Main
LCh HP Out
R49
100R
R50
No Stuff
Main
C97
470U 25V EL
C94
470U 25V EL
R5
360R
R10
360R
C2
10N 63V PE
C1
10N 63V PE
Main
LK2
LINK10MM
LK1
LINK10MM
LK3
LINK10MM
LK4
LINK10MM
1
2
CN2
2,5MM 2W ST HEADER
R118
1k5
R119
3k
R120
1k5
R121
3k
Main
Main
Rev1:󰼿Resistors󰼿R118-121󰼿added
(Rch󰼿Out)
(Lch󰼿Out)
Rev2:󰼿Resistors󰼿R11,R12,R118-121󰼿values󰼿changed.
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