Harman Kardon SIGNATURE 1.5 (serv.man5) Service Manual ▷ View online
1 6
Two Channel Amplifier
Harman Kardon
SIGNATURE 1.5
Signature 1.5 (230V) TRANSFORMER WIRING Rev A
Signature 1.5 (230V)
Transformer Wiring
Rev A
1 7
Two Channel Amplifier
Harman Kardon
SIGNATURE 1.5
Signature 1.5 (230V)
Transformer Wiring
Rev B
Signature 1.5 (230V) TRANSFORMER WIRING Rev B
1 8
Two Channel Amplifier
Harman Kardon
SIGNATURE 1.5
INTEGRATED CIRCUITS
1
2
3
4
8
7
6
5
OUTPUT A
INVERTING
INPUT A
NON-
INVERTING
INPUT A
GND
+V
S
OUTPUT B
INVERTING
INPUT B
NON-
INVERTING
INPUT B
U2 - LM556CN DUAL TIMER
A001-2009-0
1
5
2
6
3
7
4
14
10
13
9
12
8
11
COMP
COMP
COMP
COMP
V
CC
GND
DISCHARGE
DISCHARGE
THRESHOLD
THRESHOLD
CONTROL VOL
TAGE
CONTROL VOL
TA
GE
RESET
RESET
OUTPUT
OUTPUT
TRIGGER
TRIGGER
U1 - LM393N DUAL COMPARATOR
A001-0005-0
FLIP FLOP
FLIP FLOP
1 9
Two Channel Amplifier
Harman Kardon
SIGNATURE 1.5
Signature 1.5 POWER SWITCH/INDICATOR SCHEMATIC (1 of 1)
Signature
1.5
Power
Switch/Indicator
Schematic
1o
f1
5
5
4
4
3
3
2
2
1
1
A
A
B
B
C
C
D
D
E
E
F
F
G
G
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