Speco VM-901B, Service Manual

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1
2
3
4
56
A B C D
6
5
4
3
2
1
D C B A
Titl
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N
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er
Revi
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Si
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Sh
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F
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G2
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G4
7
K
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4
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A
T
3
G1
1 6
J501 CRT
S
O
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T
V
R
501
2M
B
R
515
330K
R6 4.
7 1/
4W
1 2 3
W
204
C
210
47U
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R
225
680K
R
222
8.
2K
2W
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223
1.
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1/
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R
224
150K
C
214
1U
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1 2 3
W
205
R
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1K
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2688
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217
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+
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902
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901
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25
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R
901
560K
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903
472/
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904
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D
901
3A
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906
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R
914
82K
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902
22K
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C
907
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4 2 1 6 5
8 7 11 12
T901
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L
-35
D
902
B
A
159
GND
5
VC
7
COM
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1
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Vref
8
Rt/Ct
4
OUT
6
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3
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901
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3842
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4148
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2996
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R
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27K
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903
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R
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908
47
R
907
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D
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E
R
205
C
916
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27.
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C
915
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R
105
L
901
56U
H
12.
9V
12V
R
912
10 2W
D
907
F
R
105
C
918
EC
1000U
/50V
OPTION
V
R
201
500
V
R
218
5K
V
R
603
2K
V
R
203
3K
R
224
100
VIN
R
226
15K
R
225
4.
7K
R
228
270
R
227
270
R
413
22K
V-
P
OS
I
H-
P
OS
I
POW
E
R BOARD
VR BOARD
CRT BOARD
VM-901B
/12
01
/15
01B
P
O
W
E
R
/B
CR
T
/B
V
R
/B
S
YNC+
S
YNC-
GN
D
CONT
13.
5V
F
UNCT
ION
OP
T
ION
W
504(
PI
N
5
)W
504(
PI
N
2
)