Sanyo PLV-55WHD1 Service Manual page 90

Chassis Block Diagrams
● Fan control stage
61
FAN_SW
H: FAan ON
SCL_TV
25
24
SDA_TV
18
FAN_ERR
L : ERROR
Location of Fan and Temperature sensor
FN901
(for Lamp)
Q7881
FAN_ENB
17V
4
Q7811
5
Q7831
2 6
3
Q7851
7
Q7871
For ABNORMAL TEMP. DETECT
and FAN CONTROL
MAIN BOARD
FN905
(Exhaust)
IC8801 (Temp. Sensor-C)
on PWB side-B
FN902
(for PBS)
FN904
(for Panel)
TPFAN1
Q7806
Q7801
IC7801
TPFAN2
Q7826
Q7821
IC7821
TPFAN3
Q7846
Q7841
IC7861
TPFAN4
Q7866
IC7881
Q7861
Q7898
1,2 1,2
IC8801 IC8811
TEMP. TEMP.
SENSOR SENSOR
IC8811 (Temp. Sensor-B)
on PWB side-B
FN906
(Intake)
FN903
(for Panel)
IC8861
(Temp. Sensor-A)
-90-
K78A
1
FN905
2
D7891
K78B
1
FN906
2
D7892
K78C
1
FN901
2
D7893
K78D
1
FN903
2
D7894
K78E
1
FN904
2
D7895
K78F
1
FN902
2
D7896
K8T
3,5
K68B
1,2
IC8861
TEMP.
SENSOR
KEY BOARD