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Date: December 11, 1995 Sheet 1 of 1
Size Document Number REV
E --- ---- --- 1.0
Title
B3/C3 SCHEMATIC
F
C22
24-90PF
R37
270K
C17
680PF
C24
82PF
C23
.033
VOLUMESOFT
NORMAL
E
C16
.033
RADIO-PHONO
R29
330K
EXPRESSION
CONTROL
+280V
C2
39PF
1
62
7
5
V1
6AU6
C5
.01
R9
820K
TO BALANCE CHANNELS
R10
3.9M
C8
30PF
C15
51PF
R10 - SELECT AT TEST
145V
130V
R8
470K
OFF
ON
OFF
ON
VIBRATO
GREAT
VIBRATO
SWELL
R2
1M
C1
470PF
R4
1.8M
R5
10M
R6
47K
C3
100PF
A
T2
MATCHING
TRANSFORMER
UPPER
PEDAL
DRAWBARS
TYPICAL GROUP OF UPPER
(SWELL) MANUAL DRAWBARS
TYPICAL GROUP OF LOWER
(GREAT) MANUAL DRAWBARS
T1
MATCHING
TRANSFORMER
(LOWER AND PEDAL)
2 3
6
5
B
R1
3.9M
R3
270K
(FROM V2)
R13
4.7M
C7
24PF
R7
2.2M
C4
.33
R28
270K
R27
1.8M
+1.7V
(FROM V2)
2
1
3
V4A
12AX7
C11
.0047
60V
+280V
+1.7V
C18
220PF
C20
220PF
R30
1.8M
R32
1.8M
R31
68K
R33
68K
R34
15M
60PF/SEC
R35
3.3M
7
6
8
V4B
12AX7A
R39
330K
R38
390K
R36
330K
140V
+1.7V
(FROM V2)
+280V
G
G
BN
C25
.001
T3
C26
30/25
R42
1200
R41
100K
12V
7
6
8
V3B
12BH7A
+290V
R40
300K
TONE
285V
C19
.0022
C21
.001
D
7
6
8
V3B
12BH7
R19
470K
C12
.0047
R21
1M
R22
820
R25
100
C13
1.0
C
+290V
130V
100V
95V
PERCUSSION
SIGNAL
R14
10M
R15
2.7M
R12
270K
R16
470K
C8
.0001
R17
1.2K
1
62
7
5
V2
6AU6
60V
R20
2.2M
UPPER MANUAL
PRESET PANEL
LOWER MANUAL
PRESET PANEL
0
1
2
3
4
5
6
7
8
UPPER MANUAL
LOWER MANUAL BUSBARS
91
(GEN 49-91)
BUSBARS
2 3
6
5
C10
.33
+1.7V
(TO V1,V4)
C9
30/25
R62
100K
R23
22K
R24
22K
C32
390PF
C34
.001
R63
390K
C35
150PF
+280V
R44
22K
VIBRATO
SWITCH
CLOSED
IN V1/C1
CLOSED
IN V1,V2,V3
CLOSED
IN V2/C2
CLOSED
IN V3/C3
SCANNER
18
17
16
15141312111098
7
6
5
4
3
21
C33
.0033
7
R61
33K
+205
+205
2
1
3
V7A
12AU7
C31
.33
T5
T6
+37V
200V
7
6
8
V7B
12AU7
6
7
1
V5
6C4
T4
C29
100PF
C30
25/25
C28
.047
R49
2.2K
R48
470K
R47
47K
85V
H
THIRD
SECOND
OFF
ON
PERCUSSION
1
44
(GEN 44-48)
4
1
(GEN 1-43)
GENERATOR
OUTPUT
TERMINALS
R50
22
R51
4.7K
SOFT
PERCUSSION
VOLUME
J
K
25V
R58
4.7M
R57
1.5M
FAST
PERC.
DECAY
PERCUSSION
CUTOFF
200V
L
M
6
7
1
V6
6C4
SLOW
R55 82K
R56 22K
+33V
L1 L2
R65
27K
C37
.004
C38
.004
R66
68K
R67
56K
R68
150K
R60
30K
R59
120K
+33V
L3 L5 L6L4
C39
.004
C40
.004
C41
.004
R70
150K
R72
180K
R74
180K
R76
180K
R69
39K
R71
33K
R73
18K
R75
12K
L13L12L11L10L9L8L7
C42
.004
C43
.004
C44
.004
C45
.004
C46
.004
C47
.004
C48
.004
L18L17L16L15L14
R77
15K
C49
.004
C50
.004
C51
.004
C52
.004
C53
.004
C54
.001
T5
T4
T6
TOP VIEW
VIBRATO DELAY LINE
EXPRES-
SION
T3
C56
C57
C58
T1
C9,C26
C59,C60
1
2
NINE CONTACTS AND CONNECTIONS
SAME AS "B" EXCEPT THAT
UNDER "A#" ADJUST KEY ARE
THESE THREE DRAWBAR WIRES
NINE CONTACTS UNDER TYPICAL
PLAYING KEY.
GO DIRECTLY TO KEY CONTACTS.
3
NOTES:
C60
50/300
R97
4500
R98
7500
+37V
+205V
+290V
335V
R94
4.7K
6.0V
HEATERS
T7
NORMAL
OFF
ON
BL
R46
12K
START
SWITCH
RUN
SWITCH
R85
5
R84
5
R80
10
R82 47
R81 10
8 CONTACTS UNDER
TYPICAL PEDAL KEY
TONE
GENERATOR
L20
R83 470
PEDAL SWITCH
BUSBARS
TERMINALS
TO GENERATOR
(SEE PEDAL
WIRING CHART)
(1000)
HEATER
(IF USED)
R88
600
R86 20
R87
250
STARTING
MOTOR
SYNCHRONOUS
MOTOR
GY
117VAC
50/60HZ
TO GND
340VRMS PINS 1,6
375V
R91
900
C57
40/400
C56
40/450
7
3
4 1
6
V8
6X4
R95
4.7K
C58
30/350
C56
10/350
R100
2.7K
R101
2.7K
R96
4.7K
R99
180
+33V
+280V
NINE CONTACTS AND CONNECTIONS
UNDER "B" ADJUST KEY.
4
5
NINE CONTACTS AND CONNECTIONS
UNDER TYPICAL PRESET KEY.
PRESET PERCUSSION SWITCH
UNDER "B" ADJUST KEY ONLY.
6
TO GENERATOR TERMINALS
(SEE MANUAL WIRING CHART)
7
R61 SELECTED AT TEST
TO BALANCE THE CHANNELS.
V8
V3
CONTROL
V5V6V2V1V4
V7


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