No Power (Fan Control) - Panasonic PT-EX600U 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 is
correct.
Power-on: High
S16V
Q7782
8
IC7721
FAN_ENB1
3
FAN_CONT2
Q7783
8
IC7701
FAN_ENB3
3
FAN_CONT1
Q7784
1
FAN_CONT3
Q7881
1
FAN_CONT4
Q7921
1
FAN_CONT5
Q7821
1
FAN_CONT6
Q7841
1
FAN_CONT7
Q7861
FAN_DRIVE
PW_SCL0_S5V PW_SCL0
PW_SDA0
PW_SDA0_S5V
FN902
FN903
FN904
FN905
FN901
TPFN6
Q7721
L7721
6
Q7722
FAN_SPEED[6]
FAN_SPEED[7]
TPFN11
Q7701
L7701
6
Q7702
TPFN4
3
IC7881
2 4
TPFN2
3
IC7921
2 4
TPFN1
3
IC7821
2 4
TPFN3
3
IC7841
2 4
TPFN5
3
IC7861
2 4
IC7960
2 4 10 12 6
IC5201
FPGA
<XC3S50A>
137
IC301
SYSTEM CONTROL
68
<PW392>
WINDS_SENS
-85-
Check that the fan
voltage is correct on
each fan.
K78F
FN906
(PANEL)
FAN_SPEED[5]
K78G
FN907
(PANEL)
K78H
FN908
(PANEL)
K78L
FN911
FAN_SPEED[10]
(PANEL)
K78K
FN910
(PANEL)
FAN_SPEED[9]
K78J
FN909
(PANEL)
FAN_SPEED[8]
K78D
FN904
(LAMP)
FAN_SPEED[3]
K78E
FN902
FAN_SPEED[1]
(PBS)
K78A
FN901
(POWER)
FAN_SPEED[0]
K78B
FN903
FAN_SPEED[2] (LAMP)
K78C
FN905
(EXHAUST)
FAN_SPEED[4]
IC7850
Check that the fan lock
signal is correct on each
fan.
12 4 2
6 8 10
Error: High
S901
WIND SENSOR
K8C
FN910
FN909
FN906
FN907
FN908
FN911