Project 2 Left Pre-Amp - SPHINX Project Two MKII Service Manual

SPHINX Project Two Mk2
+22V (+/-1V) LED voltage approx. 1.8V
+22V
LED red
+
C66
LD16
R138
33K2 ± 4mA
L-INPUT
CN14
8
7
6
5
4
3
2
1
AGND
± 4mA
LED red
+
C65
LD15
-22V
-22V (+/-1V)
P2
D12
50R
R133
243R
R107
T35 2K21
A970
R109
2K21
T31
C2240
LED red
+
LD10
C61 LED red R132 R128
200R 100R
LD9
LED red
R131 R126
200R 100R
+
LD8
C60 LED red
LD7
T30
A970
R102
2K21
T34
C2240 R104
2K21
R130
243R
P1
50R
D9
10N
C70
AGND
R106
2K21
R108
51R0
T22
C2240
T26
K389
R122 R119
100R 200R
C58
R100
10R0
47P 470P
R90
4K75 C56
R124 R118
100R 200R
AGND
T25
J109
T24
A970
R103
51R0
R105
2K21
AGND
10N
C69
R76
4K75
R141
600R
+
J3 C73 C74
330U/50V
AGND
Service Manual

Project 2 left pre-amp

R93 R79 R80
600R 243R C53 100R
AGND
± 7.5mA ± 7.5mA
R78
T17 T11
A1145 A1306
51R0
T16
C2705
D11
R97
18R0
R77
10R0
R75
10R0
R96
18R0
D10
T15
A1145
R74
T14 T10
C2705 C3298
51R0
AGND
R92 R73 R72
600R 243R 100R
C52
CN9
1
4
+L-OUT
CN6
4
1
+L-OUTR
CN8
4
1
18