Harman Kardon SIGNATURE 2.1 (serv.man6) Service Manual ▷ View online
2 4
Multichannel Power Amplifier
Harman Kardon
PA5800 / SIGNATURE 2.1
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
PA5800: U254
Signature 2.1: 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
TAGE
RESET
RESET
OUTPUT
OUTPUT
TRIGGER
TRIGGER
Signature 2.1: U1
LM393N DUAL COMARATOR
A001-0005-0
FLIP FLOP
FLIP FLOP
2 5
Multichannel Power Amplifier
Harman Kardon
PA5800 / SIGNATURE 2.1
PA5800 POWER SWITCH SCHEMATIC (1 of 1)
PA5800
Power
Switch
Schematic
1o
f1
R256 100K
103
C255
16V
107
C259
R235
10K
10K
R223
10K
R222
Q226 A06
GND
C220 107 16V
P205
3
4
2
1
K206
Q225 A06
C12 103
25DX
RL
Y-SPST
PWRSW
-IN
D217
1N4148
C261 107 16V
5V
D260
1N4148
D231
R230
100K
Q234 A56
MUTE
P237-3
P221-3
+12V
R239 10K
R258 1/4
W
47K
C257 104
Q245 A06
Q240 A06
R242
3.3K
FAUL
T
P237-4
C244 104
Q251 A06
C7 106 16V
R245 100K
C1 104 16V
C262 104
1/4
W
R2
1/4
W
R1
47K
47K
P237-2
C253 103
C247 106 16V
P237-1
D1
1N4148
+12V
R252
47K
1/4
W
R248
270
Q5 A56
1N4148 D243
R227
1K
P260-3
P260-2
P271-2
P271-3
COM
D270
GRN
RED
P271-1
DCSENSE
P237-5
P260-1
C211
104
27D
1/4W
R229
Q218 A06
P221-1
10K
S219
POWERSWITCH
R221-2
R281
P280-1
S
TS
1
2
10K
T
J294
P280-3
R282
P280-2
1D0
R283
PWRSW
-IN
2T09
P1-1
F203
P201
P202
P207
1
3
2
4
T1
F208
D212
D215
1N4004
1N4004
C216 104
1N4004
D214
+12V
C210 105 16V
D213
1N4004
GND
R233
10K
16V 107 C228
C224 107 16V
D241
1N4148
1N4148
1N4148 D238
D236
AMP_A.P86-1
AMP_A.P86-3
AMP_B.P86-3
AMP_A.P86-2 AMP_B.P86-1
AMP_B.P86-2 AMP_C.P86-1
AMP_C.P86-2 AMP_D.P86-1
AMP_D.P86-2 AMP_E.P86-1
AMP_D.P86-3
AMP_E.P86-3
AMP_E.P86-2
AMP_C.P86-3
XFR-P
A5800
11
12
13
14
15
16
17
2
10
3
4
5
6
7
8
9
1
TO_P205
TO_P207
R250
4.7K
LM556
U254
1
2
3
4
5
6
13
12
11
10
9
8
DIS2
THR2
CRT2
RST2
OUT2
TRG2
DIS1
THR1
CRT1
RST1
OUT1
TRG1
5
5
4
4
3
3
2
2
1
1
A
A
B
B
C
C
D
D
E
E
F
F
G
G
2 6
Multichannel Power Amplifier
Harman Kardon
PA5800 / SIGNATURE 2.1
PA5800 POWER AMPLIFIER SCHEMATIC
NOTE
:top
part
of
schematic
is
typical
for
all
five
power
amps
and
reference
designators
have
suf
fixes
A-E
for
respective
channels
PA5800
Power
Amplifier
Schematic
C34 102
R16
1K
R28
100
C50 476 63V
R13
1K
J1
S
T
TS
R2
100K
C17 476
RCA/15
C12 271
33K
R11
Q14 2SC2240
Q18
2SC2240
R19
R15
100
100
MUTE
47K
R87
C45
15pf
50DM
C22 477 10V
Q37 2SA970
33.2K
R43
1N4148
D33
R65
2.2K
22K
R66
Q64
2SC3478
C67 131 500M
R78
1.2K
R95
1002UH
L94
R3W
R61
R3W
R84
R93
10
2SC4793 Q88
Q99
2SC5242
Q98 2SC5242
R32
5.6K
.33
.33
R3W
R60
R3W
R83
.33
.33
P75-1
P75-2
R74
5.6K
R96
10
L97
2UH
Q100 2SA1962
Q101 2SA1962
C57 104
Q92 2SA1B37
2
1
3
R70 500
R72
1K
Q82 2SA1376
Q79 2SC3476
DB0
D81
1N4148
R62
22K
1N4148
R77
470
470
R28
R76
100
R54
10
-50
R2W R85 6.8K
C26 828 50V
C27 828 50V
-50
C52
104
100V
F59
F58
BR53
P86-1
P86-3
P86-2
+50V
C51
104
100V
Q23 A06
R21
180
Q24 A06
D31
1N4148
63V 476 C49
R3
1.24K
Q89 A06
5.6K
R73
C71 106
R42
3.3K
Q48
2SC3478
1
C44 106 16V
L47
.4UH R47
R2W 5.1 R8
CHGND
C9 104 E100
C7 271
DCSENSE
R102
47K
1N4004
D92
J5
BINDPOST/H
BLK
RED
C6 271
FAUL
T
D90
1N4004
D5
1N4148
R2W R48 6.8K
+50V
C56 104
R55
10
2
1
100
470
R63
R68
Q69 2SA1376
Q30 2SA970
R35
470
C38 102
100
R36
R20
1K
DCSENSE
MUTE
P123-3
P123-5
NOTE
:bottom
part
of
schematic
shows
components
of
which
there
is
only
one
each.
P123-2
P123-1
TH124
THERSW
+50V
FAUL
T
R120
3.3K
C124 104
Q121 A56
P123-4
1N4148
D122
5
5
4
4
3
3
2
2
1
1
A
A
B
B
C
C
D
D
E
E
F
F
G
G
2 7
Multichannel Power Amplifier
Harman Kardon
PA5800 / SIGNATURE 2.1
Signature
2.1
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
Signature 2.1 POWER SWITCH/INDICATOR SCHEMATIC (1 of 1)
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