Toshiba TDP-TW300U Service Manual page 36

No lamp ON
Check the error code log at service mode
When there is the error code, refer to the LED error List.
When the error code is Lamp error (No.1), remove the lamp to see if it looks good.
There should be no ruptures, no bulges, no cracks in the reflector.
Substitute a known good lamp if you want to be absolutely certain that the lamp is not the problem.
Replace the lamp.
Check the color wheel motor cable and color wheel sensor cable are connected to the Main board.
Does lamp enable measure low ?
(PJ701 2 PIN)
No
Are DC power voltage levels
OK on the Main board.
Yes
Lamp or projector shuts off after running a Short period of time.
Note:
This is usually a thermal issue caused by excessively high internal temperature.
The high temperature could cause a component on the Main board or the power supply to fail when it gets hot.
Check the error code log at service mode
When there is the error code, refer to the LED error List.
Are all fans running ?
No
Replace the broken fan.
Does the projector run properly?
No
Yes
Is 370 V (DC) input of Ballast OK?
(CJ1 1 PIN)
Replace the ballast
No
Replace the power supply
Replace the Main board
Yes
Yes
6-4
Chapter 6
370 V (DC): CN102 1 PIN (RED)
(POWER SUPPLY SIDE)
Yes
Replace the Main board
Problem resolved
Replace the power supply
No