ViewSonic PJ551, PJ501 manual Symptom Possible cause Remedy

Table 11: Indicator Messages (Continued)

POWER	LAMP	TEMP	Meaning or Action Required
indicator	indicator	indicator
Blinks/	Lights red	Turns off	Lamp is not lit.
Lights red			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/	Blinks red	Turns off	Lamp or lamp cover is not found, or hasn’t been fitted in correctly.
Lights red			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/	Turns off	Blinks red	The cooling fan is not operating.
Lights red			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/	Turns off	Lights red	The interior of the equipment is too hot. See NOTE: (about
Lights red			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	Blinks red	The interior of the equipment is too cool.
	alternately	alternately	Check whether the ambient temperature is below 32°F (0°C). Contact
	with TEMP	with LAMP
			your dealer if the same problem occurs when the ambient temperature
	indicator	indicator
			is 32°F ~ 95°F (0°C ~ 35°C).
Lights green	Blinks red	Blinks red	The air-filter has been used for 100 hours or more.
	synchronizing	synchronizing	Clean the filter, then reset the filter timer.
	with TEMP	with LAMP
	indicator	indicator

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.

Table 12: Symptom

Symptom	Possible cause	Remedy	Page
No power	The main POWER switch	Turn on the main POWER switch.	page 9
	is not turned on.
	The power cord is	Plug the power cord into an AC power outlet.	page 7
	disconnected.
No video or	The Input is not correctly	Use INPUT button on projector control pad or remote control	page 10
audio	set.	to select input source.
	No signal input.	Connect correctly.	page 7,8

ViewSonic PJ501/PJ551 22