Service manual

6-2

Chapter 6

Troubleshooting

You use this section to diagnose problems with the projector. Choose the problem you

are trying to diagnose from the list below. The Power, Image and Audio sections

provide a variety of symptoms, while the other includes only one page.

1. For Power problems

2. For Image problems

3. For Audio problems

4. For Remote Control

5. For Keypad problems

6. For Menu problems

Troubleshooting Power Problems

No stand by LED

No lamp

At least some fans are running.

Lamp or projector shuts off after

running a short period of time.

The projector will not power up, only partially power up,

or will not remain powered up.

What is the problem?

No stand by LED

Check the voltage of CN10

(Power IN) at Main board

And also check the voltage of CN201 (Power Out) at Power Supply

when it removes the cable from Main board.

Check the Power cord and AC power outlet.

Check the Main power switch.

Check the Keypad cable has broken or not.

Check the connect cables inside the Unit.

Problem resolved.

Replace the power supply

Replace the Main board

Yes

Does the projector power up?

Is the power supply outputting?