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-118-
Troubleshooting
- 118 -
IC801
CPU
R/C
FAN
FAN
POWER
POWER(DC)
NOISE
FILTER
AC
INPUT
BALLAST
1/2
P.F.C.
1/2
LAMP-1/2
TH901
TEMP. SENSOR
IC2541
TEMP. SENSOR
IC8801
TEMP. SENSOR
IC886
PRESSURE SENSOR
IC1882
OPE AMP
INDICATORS
FAN
CONTROL
FAN
CONTROL
RESET KEY
SW902
LAMP COVER SW
DA
CONVERTER
SW903/904
THERMAL SW
MAINS
SW
FUSE
SWITCHING
POWER
SUPPLY
PRIMARY CIRCUIT
PF_
FANS
POWER
FAIL
POWER
FAIL
12VA
12V
PF_TH
LAMP3/4
PF_PFC3/4
IC_RESET_CPU
BLAST_SW3/4
IIC
IC5801
IO
IC1881
Check that PFC cir-
cuit on/off signals
are correct.
Check that the Lamp
ballast on/off signals
are correct.
Check the tempera-
ture switches.
Occasionally, CPU may malfunc-
tion and need to be reset.
RESET for CPU
SW3801
Power on/off
Fan on/off
PFC on/off
Ballast on/off
Power sw
OFF
Power sw
ON
Cooling time after power off.
400~600ms(Stability period of PFC.)
Timing chart
Is fuse (F901) blown?
Fuse may be opened
when either LAMP indi-
cator or READY indicator
does not light. Check
the fuse.
For safety, replace it with
a new fuse of the same
type
Is the lamp cover attached cor-
rectly?
When the lamp cover is removed
or not attached correctly, the
projector cannot be turned on.
Check the lamp cover and the lamp
cover switch (SW902).
SW902--open: Abnormality
Are the LAMP indicator
(red) and READY indica-
tor (green) light?
If the LAMP and READY
indicators are not light,
check the primary circuit
and S5V of standby power
supply circuit.
Check that Vcc volt-
ages are correct.
Check that IIC
Bus signals are
correct.
No Power
Check 12V
for PFC.
Check that POWER FAIL
signals are correct.
L : Abnormality
Check that POWER ON/OFF sig-
nal (IC_RESET_CPU) is correct.
L : Abnormality
Содержание LC-X800
Страница 156: ...156 Parts Location Diagrams KE8 X80000 Optical Filter LC CS L21 Integrator In Assembly S06 L06 S06...
Страница 157: ...157 Parts Location Diagrams KE8 X80000 MIrror R Assembly S06 L15 Integrator Out PBS Assembly S06 L05 S06 L06...
Страница 158: ...158 Parts Location Diagrams KE8 X80000 Relay In Assembly L13 L17 L14 L18 In the Optical Lamp Unit...
Страница 159: ...159 Parts Location Diagrams KE8 X80000 L20 L07 L12 L16 L09 L15 L08 L19 L08 L12 L10 L11 In the Optical Unit...
Страница 210: ...KE8B Dec 2009 Japan 2009 Eiki Internatinal Inc A key to better communications...