YST-SW325
12
A
1
2
3
4
5
6
7
B
C
D
E
F
G
H
I
J
K
MAIN (5) P. C. B.
AUTO
STANDBY
R, T, K, L models
U, C, R, A, B, G, J models
R, L models
PO
WER
TRANSFORMER
PO
WER
TRANSFORMER
V
O
L
T
A
GE SELECT
OR
MAIN (2) P. C. B.
MAIN (7) P. C. B.
MAIN (6) P. C. B.
MAIN (10) P. C. B.
MAIN (7) P. C. B.
MAIN (9) P. C. B.
MAIN (6) P. C. B.
AUT
PWS
VCC
+V1
E
WH
WH
BE
BE
GY
GY
OR
WH
BE
BE
BE
GY
GY
BR
BR
YE
YE
MAIN (1)
(W1)
RE
WH
Ref. no. Location
D1
B4
D4
B5
D5
B4
D7
J5
D9
J5
D12
J4
D13
J4
D15
J4
D18
H6
• Semiconductor Location
Ref. no. Location
D21
I6
D22
I2
D23
I5
D24
I2
D25
I5
D26
I2
D27
I3
D28
I3
D29
I5
Ref. no. Location
D30
I5
D31
I5
D33
I5
D34
J2
D35
H3
IC5
I2
IC6
B6
IC7
B6
IC8
A5
Ref. no. Location
IC9
K3
Q1
B5
Q2
B5
Q3
B5
Q5
J4
Q6
J4
Q9
B6
Q24A
I5
Q24C
I3
Ref. no. Location
Q29
J4
Q30
I3
Q31
I3
Q32
K2
Q33
K5
Q34
H3
CONFIRMATION OF
AUTO STANDBY OPERATION
R72
add 10 k-ohms
OFF
LOW
HIGH
MAIN (1)
(W6B)
MAIN (3)
(CB3)
MAIN (1)
(W7B)
DRIVER
1
13
9
1
MA
AU
T
-15
+15
VCC
PWS
PWS
VCC +15
-15
AU
T
-V2 BASE
OUT CUR
E
E
+B
-B
OFF
ON
POWER
GY
OR
Circuit No.
U, C, J
R, L
T, K, B, G
A
C25
X
O
X
X
R46
X
O
X
X
D4
X
O
X
X
Q1
X
O
X
X
Q2
X
O
X
X
C27
X
O
X
X
C28
O
X
O
O
R52
O
X
O
O
■
PRINTED CIRCUIT BOARD (Foil side)
Lead Free Solder Used
