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D
CBA
Title
Number
Revision
SizeA3Date:
5-Dec-2003
Sheet of
File:
F:\jxb\SCH\b52-sch\ST-60 AND 6012\ST60A AND ST-6012.Ddb
Drawn By:
R1
47KR247K
R31MR18
1K5
R6 220K
R4
100K
R5
1K5R81K5
R7
100K/1W
R9
1K8
R10
1K5
R11
10K
R12
47K
R13
100K
R14
47K
C35
100U/250V*2
C46
C47
C39
100U/250V*2
C27
472
C26
22U/25V
C37
100U/250V*2
C2
2U2/50VC52U2/50V
C4
472/630VC6472/630V
C3
223/630VC9473C8472C7472
C16
103/630V
C12
250P/500VC15P/1KV
C14
223/630V
C22
224/250V
C21
473
C13
104/630V
AGK
V5-2
AGK
V5-1
A
G
K
V1-1
A
G
K
V1-2
AGK
V2-1
A
G
K
V2-2
A
G
K
V3-1
VR1
A100K
VR2
A100K
VR7
B500K
VR6
B500K
R17
220K
R19
100K/1W
R20
220K
R291MR30
47K
R32
680R
R28
470K
R31
47K
R33
1M
R63
10K/2W
R86
220K*2
R34
22K
R351MR55
820R
R15
470K
VR5
B25K
VR3
B250K
VR4
B250K
JD1
C24
473/400V
C25
103/630V
C28
222/630V
C29
102/630V
C33
473/400V
C31
223/630V
C30
251/1KV
R37
470K
R38
10K
R39
820R
R40
10K
R41
100K/1W
R42
1K5
R43
100K
R44
47K
R45
100K/1W
R46
1K5
R47
390K
R511MR501MR36
10K
R49
100K
A2G2K1A1G1
K2
V4T1VR13
B500K
NOTES:
A2G2K1A1G1
K2
V6
R52
18K
R53
100K
R54
91K
R64
1K2/1W
R66
R65
R57
470R/1W*2
R56
470R/1W*2
C44
103/1KV
C45
103/1KV
C32
104/200V
C34
473/400V
AG1K
G2V7AG1K
G2
V8T2L1
N
L
AC
FUSE1
SW4
RT1
C60-11
R81
1K/2W
R80
100R/1W
R78
22K
R77
6K8
R76
68K
R73
110R/15W
R82
150R/2WT3D8
IN4007D91N4007D71N4007D61N4007
SW3
C42
220U/63V
C41
100U/100V
C48
220U/63V
VR165KD5
R3000
GAIN1
GAIN2
VOLUME
R16
470K
VOLUME
TREBLE
MIDDLE
BASS
SEND
RETURN
REVERB LEVEL
POWER
STANDBY
MODE
A2D1A1
D2
V11
R74
220K
R75
220K
RED
REDRBRY
1. V11=5AR4
2. V7.V8.V9.V10=5881
4.V1. V2.V3.V5.V6=12AX7
3. V4=12AT7
~5V1
5V1
6V3
YELLOW
YELLOW
GREEN
GREEN
TO V11
TO V1.V2.V3.V4.V5.V6.V7.V8.V9.V10
R83
100R X 2 1/2W
R84
OVERDRIVE
CLEAN
1
5
2
6
JK2
1
5
2
6
JK1
JK6
R70
220R/2W
8R
4R
R23
1K5
C20
250P/500V
C19
223/630V
C18
104/630V
AGK
V3-2
R22
100K/1W
R24
100K/1W
R25
220K
VR10
B25K
VR8
B250K
VR9
B250K
R21
1M
TREBLE
MIDDLE
BASS
R48
1M 1/4W
-+-+4R
4R
LOW
HIGH
B100K
VR11
B100K
VR12
JK10
JK11
LEVEL
LEVEL
C23
224/50V
REVERB
B500K
VR14
MASTER
100U/250V X 2
220K X 2
SW2
PHONES
UNLESS OTHERWISE INDICATED
5. ALL RESISTORS 1/2WATT
1
2
3687123
6
781
2
361387212367867824682716838534354
8
O/P
I/P
VA4
VA3
VA1
VA24R8R0RV92
V98A0A1A2A3B0B1B2B3C0C1C2C3D0D1D2D3
C43
C36
C38
R87
R88
R89
220K*2
R90
220K*2
R91
1
5
2
6
JK8
1
5
2
6
JK9
R93
100K
1
5
2
6
JK7
16R
16R
SW2
PL13-022G12
LOAD SELECT
JD3D4R3000D3R3000
R62
1K8
C50
683/630V
C49
1U/50V
VR17
A50K
C51
102
JD2
R96
1M/1/4WQ3J108D21N4148
R85
10K
R94
100K 1/4W
R95
33K 1/4W
R27
33K 1/4WQ22SA1015
+15V
-15V
Q11
J103D11N4148
1
5
26JK3
VR15
B500K
R1021KC52
1U/50V
R101
100K
LINE OUT12+-
BR1
BR32
ZD1
1N4744A
+15V
-15V
R103
47R
SW5
LIFT
GND
GAIN SW
R68
390K
ZD2
1N4744A
R71
6K8Q1TIP41C
R98
5K6
R99
5K6
R26
1M
R59
100K
R601MR58
470K
R61
100K
R67
47K
Q5
A1015GRQ4A1015GR
R107
6K8
R104
3K3
R106
100R
R108
33K
LED2
GREEN
LED1
RED
R109
5K1
R105
15K
SW1
SW2
+15V
GAIN SW
Q7
A1015GRQ6A1015GR
R111
3K3
R112
3K3
R113
6K8
LED4
GREEN
LED3
RED
R114
100R
R110
47K
CH.SW
Q8
A1015GR
R115
100K
CH./GAIN
+15V
RL1
-15V
REVERB
RL2
GAIN1
GAIN2
CK3-11A
CK3-11A15
26JK4
1
5
26JK5
LED5
YELQ9A1015GR
R129
47K
R130
6K8
R128
3K3
+15V
REVERB
R69
56R
RL3
-15V
CLEAN
OVERDRIVE
R92
10K
C10
683/630V
C15
103/630V
RX
150K
ST-6012
B-52 PROFESSIONAL
TO OUTPUT JACK 8R
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