Fan Control Circuit; Main Board - Sanyo Plc-WXU300 Service Manual

Chassis Block Diagrams

Fan control circuit

16V_FAN
Q7804
S16V
135
FAN_DC_ON
176
FAN_CON_B
Power-On:H
306
FAN_SW1
281
P_FAIL
SIGNAL/MODE
POWER-ON
FAN_SW1
H
NORMAL
P_FAIL
H
65
66
LAMP_SCI
IC9885
14
SUB CPU
41, 154
SCL0
SDA0
Q7842
6
1
PQ20W211P
9 10
2 IC7811
<FA7703>
5
13
Q7813
Q7864
STAND-BY
L
ERROR
L
-60-
TPFANA
Q7812
FAN_A
D3613
TPFANB
3
8
3 FAN_B
IC7841
TPFANC
D3644
FAN_C
8 D3614
Q7862
Q3601
P_FAIL
FAN_ERR
Power Error: On
IC4891
NAND
1
2
IC8831 IC8821
TEMP. TEMP.
SENSOR3 SENSOR2
<ADT75BRMZ> <ADT75BRMZ>
2 1 2 1

MAIN BOARD

FN905
K8E
1
2
D3623
FN904
K8G
1
2
D3622
FN903
K8B
1
2
D3621
FN901
K8K
1
2
D3626
FN902
K8J
1
2
D3627
FN906
K8P
1
2
1
D3628
P_Fail: H
K8H
LAMP
BALLAST
BOARD
1
SW901
1
LAMP
COVER
K8S
4
SW
2
R/C
IC8811
TEMP.
SENSOR1
<ADT75BRMZ>
2
K8D
6
5
1