Service manual

EPSON ELP-3500 Service Manual
2-10
* The projector has a timer circuit that controls the operating time of the light source
valve. Its operation is described below.
Table 2-6.
Light Source State Lamp Monitor State
Typically, the light from the projector lamp starts to dim after about 4000 hours of use.
This indicates that it is time to replace the lamp. You can check the lamp life on the
Setting Screen.
When the light source valve runs out
before its life.
The lamp monitor lights red.
If you observe the conditions above, replace the light source valve and reset the timer as
follows:
While holding down the TRACKING+ and SYNC+ buttons, press and hold down the
POWER button until the three status lights (USER 1, 2, 3) start flashing orange
simultaneously (for approximately 3 seconds).