-43-
7
P.F.C.
control
P.F.C.
SW903
+15V
Abnormal temperature detection
at the periphery of LCD panel
SW904
Interlock SW
Abnormal temperature detection
at the periphery of LAMP
Abnormal temperature
detection at the
periphery of P.F.C.
circuit
TSW601
LAMP
Q661
Q662
RL601
RL602
Lamp power
relay
Is projection of lamp cover
inside broken or not fitting?
Check the INTER LOCK
switch(SW902) and lamp
cover.
SW902 OPEN : abnormal
Is thermal switch(SW903) oper-
ating?
If temperatures periphery of
LAMP reaches 100˚C,
SW903 OPEN: abnormal
Is thermal switch(SW904)
operating?
If temperatures periphery of
LCD panel
reaches 50˚C ,
SW904 OPEN: abnormal
Is thermal switch(TSW601) operating?
If temperature periphery of P.F.C.
circuit reaches 85˚C, the
thermal switch turns on.
TSW601--------------- OPEN: normal
K7D
K7E
Lamp
monitor
Lamp
det.
When an abnormal
temperature is detected at
the periphery of lamp
driver circuit, the voltage of
this line comes HIGH.
When an abnormal
temperature is detected at
the periphery of lamp
driver circuit, the voltage of
this line comes LOW.
the thermal switch turns off.
the thermal switch turns off.
LAMP BALLAST UNIT
IIC Bus Line
IC801
CPU
IC7608
Temp Sensor
IC5851
Temp Sensor
Troubleshooting
Содержание PLC-EF12B
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Страница 56: ... 56 IC Block Diagrams CXA2112R Sample Hold IC501 IC531 IC561 IC1501 IC1531 IC1561 CXD2467Q LCD Driver IC401 ...
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Страница 61: ... 61 IC Block Diagrams CXA2016S Sync Separator IC4141 TC4052BF Sync Separator IC4141 ...
Страница 62: ... 62 IC Block Diagrams LA4261 Audio Output IC001 LB1641 LB1645N Motor Drive IC1601 IC1611 IC1621 ...
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Страница 111: ...M6V EF12N00 NL00 PLC EF12E 00 EL 00 PLC EF12B 00 111 ...
Страница 112: ... M6VAC Feb 2001 2000 SI Printed in Japan SANYO Electric Co Ltd ...