Sanyo PLC-WXU300 - Fan Control Circuit Diagram; Fan Control Logic and Sensors

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Chassis Block Diagrams
Q3601
D3623
D3622
SW901
LAMP
COVER
SW
R/C
LAMP
BALLAST
BOARD
K8E
K8G
FN905
FN904
1
2
1
2
D3626
K8K
K8J
FN901
FN902
1
2
D3621
K8B
FN903
1
2
1
2
1
2 12 1
S16V FAN_A
FAN_B
Q7812
TPFANA
Q7813
5
13
109
IC7811
<FA7703>
Q7864
Q7862
P_FAIL
D3613
D3644
D3627
K8P
FN906
1
2
D3628
IC8821
TEMP.
SENSOR2
<ADT75BRMZ>
2 1
IC8831
TEMP.
SENSOR3
<ADT75BRMZ>
IC8811
TEMP.
SENSOR1
<ADT75BRMZ>
MAIN BOARD
FAN_CON_C
FAN_CON_A
IC301
SYSTEM CONTROL
IC4891
NAND
1
4
281
2
FAN_SW1
Power-On:H
306
FAN_CON_B
176
41, 154
SCL0
SDA0
Power Error: On
P_Fail: H
SIGNAL/MODE
POWER-ON STAND-BY
H L
NORMAL ERROR
H L
FAN_SW1
P_FAIL
P_FAIL
FAN_ERR
TPFANB
K8S
K8H
K8D
2
6
5
1
1
2
LAMP_SCI
65
66
D3614
FAN_C
TPFANC
8
IC7841
PQ20W211P
3
1
86
14
3
IC9885
SUB CPU
Q7842
FAN_DC_ON
135
Q7804
16V_FAN
Fan control circuit