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2
D
IC100G
C100
+ C102
74HC14D
100N SM
100U EL
C
+49V
RLY101B
D100
RLY SPST SPKR
1N4003F
TR101
TR100
BD179
BD179
R103
220R SM
B
0V_D
TP114
3
~
SK103
MOLEXPWR4
TP115
A
1
2
3
+5V_D
TH100
PTH90DEG
C101
IC100E
100N SM
11
10
THERMPROT
R100
74HC14D
1K0 SM
IC100F
13
12
74HC14D
0V_D
RLY100B
RLY SPST SPKR
D101
1N4003F
R105
SPKR1 ON
100R SM
R106
SPKR2 ON
100R SM
R104
220R SM
+49V
TP100
BR100
BRGBU8D
+ C106
C108
10,000u 63V
100N PC
2
~
+ C107
0V_PSU
10,000u 63V
C109
TP101
100N PC
POWER AMP SUPPLY
-49V
3
4
5
+5V_D
TP102
SK100
1
TP103
2
3
4
5
SPKR1 ON
0V_D
TP104
6
SPKR2 ON
TP105
7
THERMPROT
TP106
8
VIPROT1
TP107
9
DCPROT1
TP108
10
11
+5V_D
12
13
14
FFC 14W 2.54MM VER
0V_D
PIN 1 TO THE LEFT AS YOU LOOK FROM THE FRONT
SK101
TP109
1
L911C2_1
L911C2_1.1.SCH
F
INPUT
VIPROT
0V_SIG
DCPROT
EMC
0V_LS
OUTPUT
N
+49V
0V_HF
C105
VPOS
1N0 SM
VNEG
PHONO2G
-49V
TP110
0V_SIG
0V_HF
0V_LS
PB
PCB
L911PB_1
DRAWING TITLE
AP85 third channel - top level
Circuit Diagram
23425
Notes:
A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Filename
Cambridge CB5 9PB
J:\ECO_wip\01_1101 A85 RANGE PCB FUSES AND DC OFFSET\L911_1.1.DDB - Documents\L911C1_1.1.PRJ
4
5
6
7
R107
0V_SIG
2R2 SM
SP100
0V_D
TP116
0V_LS
0V_HF
STAR POINT 8
0V_PSU
IC100A
IC100B
R101
1
2
3
4
1K0 SM
C103
74HC14D
74HC14D
10N SM
IC100C
IC100D
R102
5
6
9
8
1K0 SM
C104
74HC14D
74HC14D
10N SM
0V_D
TP111
SK102A
RLY101A
TP112
RLY100A
TP113
Top+
RLY SPST SPKR
RLY SPST SPKR
Top-
0V_LS
01_1101
JR
4/6/01
DC OFFSET CHANGES
01_1018
JR
30/1/01
PRODUCTION ISSUE
ECO No.
INITIALS
DATE
DESCRIPTION OF CHANGE
Drawn by:
Date Printed
Sheet
1
of
J Reckless
4-Jun-2001
6
7
8
D
C
VIPROT1
DCPROT1
SK102B
Bot+
Bot-
B
A
1.1
1.0
ISSUE
2
L911C1
DRAWING NO.
8