Epson EH-TW2900 Service Manual page 45

EH-TW3500/4500/5500
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)".)
Procedure
1. Set the projector on an even
workbench.
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.
10.Press [Source] button, and switch to
the corresponding source.
SEIKO EPSON
Check item
• 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?
Is image vivid enough?
Troubleshooting
INTERNAL CABLE CONNECTION CHECK
Be sure to turn off the power switch and pull out the power cable from the
projector before checking.
When replacing/removing the MA Board, make sure to check all the cables are
connected correctly referring to
(p41)".
45
CONFIDENTIAL
" 2.4.5 Cable Connection and Projector's Status
Revision A