No Power (Fan Control) - Sanyo PLC-WM4500L Service Manual

Troubleshooting

No Power (Fan control)

5
4
12
IC7801
DAC
FAN
CONTROL
7
<M62393>
15
14
13
2, 3
Check that the FAN_DRIVE
signals are correct.
Power-on: High
S16V
Q7782
8 6
IC7721
FAN_ENB1
3
FAN_CONT2
Q7783
8 6
IC7701
FAN_ENB3
3
FAN_CONT1
Q7784 1
IC7881
FAN_CONT3
Q7781
1
IC7921
FAN_CONT4
Q7921
1
IC7821
FAN_CONT5
Q7821
1
IC7841
FAN_CONT6
Q7841
1
IC7861
FAN_CONT7
Q7861
137
FAN_DRIVE
PW_SCL0_S5V PW_SCL0
PW_SDA0
PW_SDA0_S5V
FN902
FN903
FN904
FN905
FN901
TPFN6
Q7721
L7721
Q7722
TPFN11
Q7701
L7701
Q7702
TPFN4
3
2 4
TPFN2
3
2 4
TPFN1
3
2 4
TPFN3
3
2 4
TPFN5
3
2 4
PRESS-SENS
<HSPPAR003>
68
IC301 281
PRESS_SENS
SYSTEM CONTROL
<PW392>
-68-
Check that the Fan
voltage is correct on
each fan.
K78F
FN906
(PANEL)
K78G
FN907
(PANEL)
K78H
FN908
(PANEL)
Q7792
K78L
FN911
(PANEL)
K78K
FN910
(PANEL)
K78J
FN909
(PANEL)
Q7793
K78D
FN904
Q7891
(LAMP)
K78E
FN902
Q7942
(PBS)
K78A
FN901
Q7842
(POWER)
K78B
FN903
Q7843
(LAMP)
K78C
FN905
Q7794
(EXHAUST)
Check that the Fan Lock
s i g n a l i s c o r re c t o n
each fan.
IC886
Error: High
FN908
FN910
FN909
FN906
FN907
FN911