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DRAWING NO.
23425
DRAWING TITLE
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DATE
Filename
ECO No. DESCRIPTION OF CHANGE
L882C1_4.1.PRJ
A & R Cambridge Ltd.
Pembroke Avenue
Denny Industrial Centre
Waterbeach
Cambridge CB5 9PB
A85 amplifier and PSU - top sheet
Circuit Diagram
L882C1
J Reckless
20-Mar-2002
INITIALS
Date Printed
1 4Sheet of
Notes:
Top+
Top-
SK100A
CAMCON_G
Bot+
Bot-
SK100B
CAMCON_G
Top+
Top-
SK101A
CAMCON_G
Bot+
Bot-
SK101B
CAMCON_G
D100
1N4003F
D101
1N4003F
1 2
34
5 6
78
SP100
STAR_8
EMC
1
N
F
SK104A
PHONO4G
N
F
SK104B
PHONO4G
0V_SIG
0V_SIG
0V_SIG
1
2
3
SW100A
2PCO
4
5
6
SW100B
2PCO
C100
1N0 SM
1
2
3
4
SK102
AMPCT4
STANDBY
SPKR1 ON
SPKR2 ON
THERMPROT
VIPROT
DCPROT
AC PRESENT
L SIG
R SIG
SPKR1 ON
SPKR2 ON
THERMPROT
VIPROT
AC PRESENT
DCPROT
LS L
LS R
L SIG
0V_SIG
0V_LS_L
0V_HF_L
+49V
-49V +5V_D
+49V
-49V
0V_D
0V_PSU
R SIG
0V_SIG
0V_LS_R
0V_HF_R
+49V
-49V
0V_TRIG
LS L
0V_LS_L
0V_LS_R
LS R
+49V
0V_D
VIPROT_L
DCPROT_L
DCPROT_L
VIPROT_R
DCPROT_R
DCPROT_R
VIPROT_L
VIPROT_R
STANDBY
+49V
+5V_D
0V_D
0V_PSU
0V_LS_R
0V_HF_R
0V_LS_L0V_HF_L
0V_D
0V_TRIG
0V_SIG
R103
330R 1W CF
R104
330R 1W CF
R105
100R 1W CF
R106
100R 1W CF
1
2
3
4
SK106
AMPCT4
2
3
1
4
5
6
7
SK105
HPSKT
1
2
3
4
SK107
AMPCT4
LS L
LS R
0V_LS_L
REMOTE
REMOTE
FROM PREAMP
INTEGRATED / PRE-POWER
MODE SELECT SWITCH
TRIGGER
TRIGGER
TP102
TP101
TP100
TP103
TP104
TP105
TP106
TP107
TP108
TP109
TP110
TP117
TP111 TP113 TP115
TP112 TP114 TP116
0V_D +5V(D)
VPOS
VNEG
0V_PSU
PWRON
THPROT_uCVIPROT_L
VIPROT_R VIPROT_uC
AC_PRES0V_TRIG
DCPROT_L
DCPROT_R
DCPROT_uC
RC5 IN
TRG IN
L882C2
L882C2_4.1.SCH
INPUT
0V_SIG
VIPROT
DCPROT
OUTPUT0V_LS
0V_HF
VPOS
VNEG
L882C3
L882C3_4.1.SCH
INPUT
0V_SIG
VIPROT
DCPROT
OUTPUT0V_LS
0V_HF
VPOS
VNEG
L882C4
L882C4_4.1.SCH
RLY100A
RLY G5Z-2A-E
RLY100B
RLY G5Z-2A-E
RLY100C
RLY G5Z-2A-E
RLY101A
RLY G5Z-2A-E
RLY101B
RLY G5Z-2A-E
RLY101C
RLY G5Z-2A-E
TR100
BD179
TR101
BD179
R101
100R SM
R102
100R SM
R107
220R SM
R108
220R SM
PCB
PCB
L882PB_4
TP118
TP119
TP120
TP121
1
2
3
4
5
6
7
8
9
10
11
12
13
14
SK103
FFC 14W 2.54MM VER
8K7014
EARTH LEAD
8M101
EL
EARTH LEAD
1
2
PL100
1
2
PL101
R100
10R MF
02_E035 JBR 4/2/2002 FUSE VALUES UPRATED TO T4A 4.0
02_E062 JBR 20/3/02 LDO REG FITTED TO IC201 4.1