Solving problems with the image or sound – Nortel Networks 822p User Manual

Page 80

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80

Solving Problems

Solving Problems with the Image or
Sound

No image appears on the screen.

Check that the P

Power

light is green, not flashing, and the

A/V Mute

slide is open. Also press the

A/V Mute

button on the

remote control to see if the picture was turned off temporarily.

If the projector doesn’t turn on, the Operation Lock may be
enabled. Press and hold the

Enter

button on the projector for

7 seconds to release the lock.

The projector may be in standby or sleep mode. If the projector
has not received any signal for 30 minutes, it turns off the lamp to
conserve the lamp life and save energy. If the P

Power

light is

orange, press the P

Power

button to turn on the projector.

The attached computer may also be in sleep mode or displaying a
black screen saver. Try pressing a key on the computer.

If the power was switched off and then on again, wait until the
P

Power

light stops flashing and remains orange. Then press the

P

Power

button again.

Check the

Video Signal

,

Computer1 Input

, or

Computer2

Input

setting in the Signal menu to make sure it is correct for the

selected source. See page 54 for more information.

Messages may have been turned off in the

Display

setting of the

Extended menu. See page 58 for details.

Adjust the

Brightness

setting on the Image menu (see page 53)

or select

High

for the

Brightness Control

setting in the Settings

menu (see page 57).

With

Direct Power On

enabled in the

Operation

setting of the

Extended menu, if you unplug the projector and then plug it right
back in, you must press the P

Power

button to turn on the

projector. See page 58 for details.

Make sure at least one of the projector’s remote receivers are
turned on in the Settings menu. See page 56 for details.

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