-16-
Troubleshooting
- 126 -
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
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 PLV-WF20
Страница 163: ... 163 Parts Location Diagrams KY3 WF2000 Integrator In Assembly S06 L04 S06 Integrator Out PBS Assembly S06 L01 S06 L04 ...
Страница 164: ... 164 Parts Location Diagrams KY3 WF2000 MIrror R Assembly S06 L13 Relay In Assembly L11 ...
Страница 165: ... 165 Parts Location Diagrams KY3 WF2000 L20 L05 L10 L07 L14 L19 L10 L08 L09 In the Optical Unit L14 ...
Страница 166: ... 166 Parts Location Diagrams KY3 WF2000 L15 L12 L16 In the Optical Lamp Unit ...
Страница 211: ...Key No Part No Description Key No Part No Description KY3 WF2000 211 Electrical Parts List ...
Страница 212: ... KY3A Feb 2008 DC 300 Printed in Japan SANYO Electric Co Ltd ...
Страница 228: ...A14 SCH_KY3A 1 3 4 5 6 7 8 9 10 11 1 13 14 15 16 A B C D E F G H I J K L A B C D E F G H I J K L NO DATA ...