Sanyo PLV-Z4 - Fan Control Circuit

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FN901 FN902 FN903 FN904 FN905
12
D874
D873
D872
D871
IC871
COMPARATOR
IC301
SYSTEM
CONTROL
IC7841
DAC
IC4401
COLOR
MANAGER
MAIN BOARD
Power Fail: L
Power-On : H
IC4801
SUB CPU
81
14
15
13
12
FAN3
FAN4
FAN2
FAN1
IC8841
TEMP.
SENSOR
IC1801
BUFFER
K78E
12
K78D
12
K78C
12
K78B
12
K78A
FAN_SW
FAN_SW FAN_CONT4
FAN_CONT3
FAN_CONT2
FAN_CONT1
Q6631
Q6641
IC6601
IC6621
Q6651
Q6661
IC7831 IC7831 IC7831 IC7831 IC7831
FAN_MTR1-5
FAN_MTR1
FAN_MTR2
FAN_MTR3
FAN_MTR4
FAN_MTR5
TPFAN1
TPFAN2
TPFAN3
TPFAN4
Power Fail : L
P_FAIL
PWM
K8F
K8E
to switch LAMP_SW signal
5
268
91
184
269
92
POWER_FAIL
FAN_SW
FAN_CONT1
FAN_CONT2
FAN_CONT3
FAN_CONT4
S16V_F
158
328
286
327
THERM2_DET
THERM2
THERM1_DET
THERM1
TH902
TH901
31 331
● Fan control circuit
FAN(FN905)
FAN(FN904)
FAN(FN902)
FAN(FN903)
FAN(FN901)
THERMAL SWITCH(SW902)
DOOR MOTOR
TEMP. SENSOR IC(IC8841)
THERMISTOR(TH902)
FRONT
● Fan and sensor location
Chassis Block Diagrams
THERMISTOR(TH901)
MAIN BOARD