Toshiba TDP-ST20E Service Manual page 46

No lamp
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, and 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?
(CN106 4PIN)
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?
Replace the broken fan.
Does the projector run property?
Replace the power supply
Yes
No
Yes
No
Yes
No
6-3
Chapter 6
370V (DC): P2 1PIN (RED)
(POWER SUPPLY SIDE)
Is 370V (DC) input
of Ballast OK?
Yes
Replace the ballast
Replace the power supply
Replace the Main board
Replace the Main Board
Problem resolved
No