Epson DREAMIO EH-TW2900, Service Manual

Page: 45 / 107

EH-TW3500/4500/5500 Troubleshooting CONFIDENTIAL
SEIKO EPSON 45 Revision A
OPERATION CHECK FOR VIDEO INPUT/OUTPUT
When repairing the parts related with video input/output, carry out the check below
following the instructions. (See
" Trouble Shooting on image Display & Quality
(p35)" .)
INTERNAL CABLE CONNECTION CHECK
When replacing/removing the MA Board, make sure to check all the cables are
connected correctly referring to
“ 2.4.5 Cable Connection and Projector’s Status
(p41)” .
Procedure Check item
1. Set the projector on an even
workbench.
• Does Lamp illuminate?
• Is the image projected after the lamp lit?
• Is “No Signal” message displayed on screen?
• Does closing/opening the Shutter turn on/off the
image?
2. Press [Power] button to turn the
power ON.
3. Adjust the projected image position
up or down with the vertical lens
adjustment dial.
4. Adjust the projected image position
to the right or to the left with the
horizontal lens adjustment dial.
5. Adjust the focus with Focus Ring.
6. Adjust the image size with Zoom
Ring.
7. Adjust keystone with the [Keystone]
buttons of the controller.
8. From menu, select [Position], and
adjust it.
9. Connect all the IF cables to check.
Is image vivid enough?
10.Press [Source] button, and switch to
the corresponding source.
Be sure to turn off the power switch and pull out the power cable from the
projector before checking.