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ISSUE
DRAWING NO.
23425
DRAWING TITLE
Drawn by:
DATE
Filename ECO No. DESCRIPTION OF CHANGE
G:\DATA\ECO\ECO AGENDA\01_1070 l870 A85 PHONO ISSUE2\L870_2.0.ddb - L870C2_2.0.SCH
A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB
A85 PHONO STAGE - LEFT CHANNEL
Circuit Diagram
L870C2
JBR23-Apr-2001
INITIALS
Date Printed 2 3Sheet of
Notes:
TR106
2SA1085 TR107
2SA1085
R120
22R MF R121
22R MF
R105
100R MF
R108
47K MF
R101
100R MF R102
100R MF
+C102
100U SILMIC
+C103
100U SILMIC
R100
330R MF
+C100
22U EL
R109
12K MF
R110
12K MF
C105
100N PE
R117
2M2 MF
R111
56K MF
R113
100K MF
R114
100K MF
TR111
BC546B
TR110
BC546B
TR114
BC546B
TR112
BC546B TR113
BC546B
TR100
BC556B
TR101
BC556B
TR102
BC556B TR103
BC556B
TR104
BC556B TR105
BC556B
TR108
BC546B TR109
BC546B
+15V
-15V
R122
39K MF
R112
100K MF
R115
15K MF
4
5
6
SW100B
4PCO
10
11
12
SW100D
4PCO
R104
100R MF C108
470P PPW R123
10R MF
C104
100N PE
C107
100N PE
R116
2M2 MF
3
2
6
74
IC100
TL071CD
0V_SIG0V_SIG
D100
1N4148
R118
22R MF
R119
22R MF
C106
100N PE
0V_SIG0V_HF
0V_SIG
0V_SIG0V_HF
D101
1N4148 D102
1N4148
R106
100R MF
LEFT IN
LEFT OUT
Q_101
Q_102
Q_103
C109
100P PPW
R124
5K6 MF
C117
470P PPW
C116
470P PPW
C111
10N PP AX
C112
10N PP AX
C118
10U NP
C113
1U0 PE
C115
1N3 PP
C110
4N7 PP
C101
1N0 PP
C119
100P PP
00_1051 JAG 22/3/01 PRODUCTION ISSUE 1
C120
1N0 PP
01_1070 JAG 17/4/01 updated pcb and scm 2