First Action - Epson ELP-3500 Service Manual

4.2 First Action

Follow the flowchart below before starting to troubleshoot projector problems, and
proceed to the pertinent detailed flowchart (given on the next and subsequent pages).
START
Is there a cosmetic
problem, such as case,
handle, or projector lens?
No
Ensure cables are
connected correctly for
interface and internal
cables. Reconnect cable
if necessary.
LED display or fan
(heat/exhaust) problem?
No
Light source lamp or test
screen display problem?
No
Host computer or video
display problem?
No
Host computer or video
audio problem?
No
Projection image quality
problem?
No
Remote control
problem?
No
RS-232C interface
problem?
Yes Replace the part
using the
instructions in
Chapter 3.
Go to "System
Yes
Initialization."
Yes
Go to "Display
Mode."
Yes Go to "Video
Display Mode."
Yes
Go to "Audio
Mode."
Yes
Go to "Image
Quality."
Yes
Go to "Remote
Control."
Yes
Go to RS-232C
Control.
Figure 4-1.
EPSON ELP-3500 Service Manual
If you cannot isolate
problem, can you
reproduce error?
* Check the operating
environment
(temperature and
condensation) and AC
input power.
* Try to replace input
devices (host computer
and video equipment)
and their cables.
* The problem may be
attributable to static
electricity. Check to
ensure that power cords
to the projector and input
devices are grounded
properly.
* Reconnect the interface
cables and internal
cables.
* If the problem still
persists, try replacing the
main board, driver board,
and interface unit.
4-2
Yes
No