KEF PSW 2000 Service Manual

C53 100n
C54 200n
C57
104
C58
104
IEC1
IEC SOCKET
SW2A SW2B
C69
10n/275Vac
LN
E
F1
T3.15AL/250V
230V 115V
SIGNAL GND
R143
270/5W
R144
270/5W
R141
2K2/2W
R142
2K2/2W
AC 115V/230V
C59
12000u/63V
C60
12000u/63V
C55
220u/16V
C56
220u/16V
T1
TT-00018
SW 2P2T
6 7
8
5 4 3 1
2
R83 100
R81 100
R84 20K
R85 10K
R88 10K
R96
100K
R93
20K
C32 470P
-15V
C34
1u/50V
Q9
3906
D4
1N4148
R98
2K
R82 15K
+15V -15V
R89 10K
AGC
R80 120K
R101
10K
R100
10K
R103
10K
R104
15K
R105
15K
R108
2K7
R109 12K
R106
390
R102
330K
R110 100
R111
100
R117
100
R116
100
R112 10/1W R113 10/1W
R114 100
R118 r1/5W
R128
10/1W
R115
100
R119 r1/5W
Q12
A06
Q13 A06
Q14 BD139
Q17
2SC5200
Q11 A56
Q15 BD140
Q16
2SA1943
C39
100
p
C36 330n
C37
102
C47
224
R107
390
D6 1N4148
C42 680
p
D7
1N4148
C43 680
p
R127
10/1W
L1
12T
C38 47
p
C45
100u/63V
C41
2u2/50V
C44
100u/63V
C40
100
p
1 2
3
4
5
6
7
8
9
U13 TA7317P
R129
56K
R130
56K
C50
10u/25V
R139 56K
R138
33K
R134
18K
C51
u47/50V
R135
18K
R133
56K
C49
47u/35V
R132 100K
R131 100K
C48 1u/50V
+15V
-15V
SPK
D9
1N4001
R140
1K5 1/2W
Q20
A56
R136 33K
D8
1N4148
3 2
1
8 4
U10A
TL062
5 6
7
U10B
TL062
3 2
1
48
U12A
TL072
3 2
1
84
U11A
TL062
D11 8R4
Vin
GND
+15V
U14 7815
Vin
GND
-15V
U15 7915
SW3A
SW-2P1T
3 1 2
CN2
15V/OUT
3 1 2
CN1 AF/IN
+15V
-15V
+15V
-15V
GND
+Vcc
-Vcc
-Vcc
+Vcc
RLY1 RELAY
V
V
D10
1N4001
C52
47u/63V
R126 5K6
R124 5K6
R86 470K
AF/IN
R137 10K
AF/IN
!
!
!
AC1 AC0 AC2
AC2
AC1
AC0
R125 5K6
R120 100
R122 r1/5W
R121
100
R123 r1/5W
Q19
2SC5200
Q18
2SA1943
R97
24K
1
2 3
7
8
6
4
5
U9
CA3080N
TP1
20KB
+15V
-15V
-15V
+15V
C33
470P
5 6
7
U11B TL062
5 6
7
U12B TL072
D5
1N4148
D3 1N4148
R94 91K
R91
510K
R92 10K
R90 150K
R95 12K
C35 104
+Vcc
-Vcc
R99 10K
+15V
R87
47K
C31 150n
D12
1N4148
D13
1N4148
-15V
+15V
FUSE
C70
10n/275Vac
SW3B
SW-2P1T
C61
4700
p
/100V
C62
4700
p
/100V
R145
1K
C66
2u2/50V
1
2
CN5' 2PIN
1
2
CN6' 2PIN
R146
1K
R147
2K
TH1 10K
C63
100n/275Vac
C64
100
p
C65
100
p
POWERED SUBWOOFER
16
SCHEMATICS DIAGRAMS
Power Amp Schematic

KEF PSW 2000 Specifications

General

Signal to noise ratio	>90dB
Power consumption	300 W
Inputs	Line-level, Speaker-level
Type	Powered Subwoofer
Crossover Frequency	40 Hz - 150 Hz