Fan Control Circuit; Main Board - Eiki LC-WB200 Service Manual

Chassis Block Diagrams

Fan control circuit

Q7803
K7801
K8Q
1
S16V
343
FAN_SW3
Power-On:H
POWER_SW
306
FAN_SW1
135
FAN_SW2
66
FAN_CON_C
65
FAN_CON_A
176
FAN_CON_B
281
P_FAIL
SIGNAL/MODE
FAN_SW1
P_FAIL
282
FAN_ERR_C
145
FAN_ERR_B
41,154
SCL0
SDA0
MAIN
C7801
~
C7804
Q7804
Q7805
SUB POWER
Q7806 Q7807
BOARD
4 2
3
1
FANC
IC7841
4
2
Q7842
IC7811
1,14
<TPS54286>
5
6
7
Q7813
Q7814
Q7801
Q7802
POWER-ON STAND-BY
H L
NORMAL ERROR
H L
IC9001
23
DIMMER CONTROL
<LE308030F0A>
IC8831 IC8821
TEMP. SENSOR3 TEMP. SENSOR
< > < >
ADT75BRMZ ADT75BRMZ
(LAMP) (PANEL)
TPFANC
D3802
TPFANA
3
FANA
12
D3613
8
Q7864
TPFANB
FANB
D3614
P_FAIL
FAN_ERR
Power Error: On
FAN_ERR_B
INVERTER
1
2
SCIOUT
R/C
IC8811
TEMP. SENSOR1
< >
ADT75BRMZ
(OUT SIDE)
-60-
K8G
1
2
K8N
1
2
D3621
K8M
1
2
D3622
K8L
1
2
D3623
K8K
1
2
D3626
K8J
1
2
1
D3627
Q3601
P_Fail: H
D3636
D3637
K8H
Q3603
1
IC9886 1
K8S
4
2

MAIN BOARD

FN906
FN901
FN902
FN903
FN904
FN905
LAMP
BALLAST
BOARD
SW901
LAMP
COVER
SW