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ViewSonic PJ501/PJ551
22
NOTE: (about overheating) When the internal temperature rises too high, POWER to the unit switches OFF as a safety
precaution; the LED lamp indicator turns OFF. Set the POWER switch to [0] and wait 20 minutes until the equipment has
cooled sufficiently before continuing with operation.
Symptom
Before requesting repair, refer to the chart below. If the problem cannot be corrected, contact your
dealer.
Blinks/
Lights red
Lights red Turns off Lamp is not lit.
The interior of the equipment may be too hot. Switch POWER OFF,
wait 20 minutes until the equipment cools, and check whether the
ventilation openings are blocked, whether the air filter is dirty, or
whether the ambient temperature exceeds 95°F (35°C). And switch
POWER ON again.
Replace the lamp if the same problem occurs again.
Blinks/
Lights red
Blinks red Turns off Lamp or lamp cover is not found, or hasn’t been fitted in correctly.
Switch POWER OFF, and wait for 45 minutes until the equipment cools.
Check fitting of the lamp and lamp cover, and switch POWER ON
again.
Contact your dealer if the same problem occurs again.
Blinks/
Lights red
Turns off Blinks red The cooling fan is not operating.
Switch POWER OFF, and wait for 20 minutes until the equipment cools.
Check for foreign matter in the fan, and switch POWER ON again.
Contact your dealer if the same problem occurs again.
Blinks/
Lights red
Turns off Lights red The interior of the equipment is too hot. See NOTE: (about
overheating) below.
Switch POWER OFF, and wait for 20 minutes until the equipment cools.
Check whether the ventilation openings are blocked., whether the air
filter is dirty, or whether the ambient temperature exceeds 95°F (35°C).
Then switch POWER ON again.
Contact your dealer if the same problem occurs again.
Lights green Blinks red
alternately
with TEMP
indicator
Blinks red
alternately
with LAMP
indicator
The interior of the equipment is too cool.
Check whether the ambient temperature is below 32°F (0°C). Contact
your dealer if the same problem occurs when the ambient temperature
is 32°F ~ 95°F (0°C ~ 35°C).
Lights green Blinks red
synchronizing
with TEMP
indicator
Blinks red
synchronizing
with LAMP
indicator
The air-filter has been used for 100 hours or more.
Clean the filter, then reset the filter timer.
Table 12: Symptom
Symptom Possible cause Remedy Page
No power The main POWER switch
is not turned on.
Turn on the main POWER switch. page 9
The power cord is
disconnected.
Plug the power cord into an AC power outlet. page 7
No video or
audio
The Input is not correctly
set.
Use INPUT button on projector control pad or remote control
to select input source.
page 10
No signal input. Connect correctly. page 7,8
Table 11: Indicator Messages (Continued)
POWER
indicator
LAMP
indicator
TEMP
indicator
Meaning or Action Required