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7
Chopper
Chopper
control
Lamp
monitor
Lamp
driver
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
Abnormal temperature
detection at the
periphery of chopper
circuit
TSW601
SW702
LAMP
ASSY. LAMP BALLAST
Abnormal temperature
detection at the
periphery of lamp driver
circuit
SW701
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 is reach 100˚C , turn off
the thermal switch.
SW903 OPEN: abnormal
Is thermal switch(SW702)
operating?
If temperatures periphery of
chopper circuit is reach 90
, turn off the thermal
switch.
SW702 OPEN: abnormal
Is thermal switch(SW904)
operating?
If temperatures periphery of
LCD panel is reach 55˚C ,
turn off the thermal switch.
SW904 OPEN: abnormal
Is thermal switch(TSW601) operating?
If temperatures periphery of P.F.C.
circuit is reach 85˚C , turn on the
thermal switch.
TSW601--------------- OPEN: normal
Is thermal switch(SW701)
operating?
If temperatures periphery of
lamp driver circuit is reach
85
˚C
, turn on the thermal
switch.
SW701 OPEN: normal
˚C
Troubleshooting
Summary of Contents for PLC-EF10B
Page 56: ... 56 IC Block Diagrams AV9155C OSC IC3301 IC3321 CIP3250A Component Interface Processor IC102 ...
Page 59: ... 59 IC Block Diagrams ML60851ATB USB Controller IC3801 MPC948FA Clock Driver IC3341 ...
Page 60: ... 60 IC Block Diagrams M62358FP DAC IC1401 VPC3215C Digital Video Processor IC101 ...
Page 61: ... 61 IC Block Diagrams MB40988PFQ D A Converter IC1181 MSM54V16258 DRAM IC2301 IC2311 ...
Page 62: ... 62 IC Block Diagrams CXA2016S Sync Separator IC4141 TC4052BF Sync Separator IC4141 ...
Page 102: ...July 99 1300 SI Printed in Japan SANYO Electric Co Ltd ...