Toshiba TDP-ST20B, Service Manual

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6-3
Chapter 6
No lamp
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.
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.
Lamp or projector shuts off after running a Short period of time.
No
Yes
Replace the Main Board
Replace the broken fan.
Check the error code log at service mode
When there is the error code, refer to the LED error List.
Problem resolved
Yes
No
Replace the power supply
Replace the ballast
No
Yes
Check the color wheel motor cable and color wheel sensor cable are connected to the Main board.
Yes
Replace the power supply
No
Yes
Replace the Main board
370V (DC): P2 1PIN (RED)
(POWER SUPPLY SIDE)
Does lamp enable measure low?
(CN106 4PIN)
Are DC power voltage levels
OK on the Main board
Is 370V (DC) input
of Ballast OK?
No
Are all fans running?
Does the projector run property?