Section
4
Display Systems
4-3
4.3.1 Projector Response Problems
Refer to the following if the projector is not responding to keypad commands.
Symptom:
The projector will not turn on when [
POWER
] is pressed. All back panel lights are off. See Figure
4-1.
Cause/Remedy:
1. The power cord may be disconnected. Check the power cord connection at the wall outlet
and the projector.
Symptom:
The projector will not turn on when [
POWER
] is pressed. Only the amber
LED on the back
panel is lit.
Cause/Remedy:
1. [
POWER
] may not have been held down long enough to initiate projector power-up. Hold
down [
POWER
] for at least one second to initiate power-up.
2. If using an IR keypad, ensure it is pointed at the screen or the front of the projector. If the
keypad is configured for built-in or wired usage, make sure it is properly connected to the
projector.
3. If using an IR keypad, the batteries may need replacement. Remove the batteries from the
battery compartment on the back side of the keypad. Install new batteries as described in the
Section 0.
4. The keypad may be damaged. If the back panel C LED does not flash when [
POWER
] is
pressed, the projector is not responding to the keypad. Try using a different keypad.
5. If using a remote keypad (IR or wired), the keypad's protocol (A or B) might not match the
projector's IR protocol setting. Refer to Section 0
for instructions on how to check and
change the keypad's protocol setting. However, if the projector's setting is "Off", the remote
keypad will not respond. You may have to configure the keypad for built-in operation to gain
control of the projector.
Symptom:
The projector will not turn on when [
POWER
] is pressed. One or more of the following red LEDs are
lit:
ERROR, LVPS, EHT, H.FAIL, V.FAIL
.
Cause/Remedy:
1. An internal failure has occurred. Projector servicing may be required. Contact your reseller
or VDC Display Systems for assistance.
Symptom:
The projector's green
POWER LED
is lit and all other LEDs are off yet no picture is displayed.
Cause/Remedy:
1. Contrast or brightness may be set too low. Press [
]to activate the status screen. If there is
no display, press [
]then increase contrast ([
CONT
] ) and brightness ([
BRITE
]) until the
crosshatch is displayed. Adjust contrast and brightness to their proper settings.
2. The room lighting may be too bright.
3. The projector may be too far from the screen. Move the projector closer to the screen. The
maximum throw distance is 25 feet.
4. Were the lens covers accidentally left on? Remove the lens covers.
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