MAINTENANCE
DLV 1280 User's Manual
4-11
sure that the lens is as far back into the projector as possible—flush with the
front face of the lens mount clamp. Support the lens and secure the 2 hex screws
on the curved portion of the lens mount.
Replace the projector lid
Replace the projector lid and secure
with the four corner screws.
Adjust the projector position
Remove lens cap and reposition the projector closer to or further from the screen
as necessary for the screen and new lens type. For example, if using a 1.2:1 lens,
throw distance should be roughly equal to 1.2
x
the screen width. Adjust offsets
as necessary so that the display is rectangular. See Section 2 for details. Note:
For extremely long throws using a 1.2:1 lens, you may need to move the lens
further out from the projector.
If the projector is not operating properly, note the symptoms of the problem and
use the following guide to assist you. If you cannot resolve the problem yourself,
contact your dealer for assistance.
The projector will not turn on when
is pressed...
1. Make sure that
is held down for at least a second or two.
2. Are both LEDs OFF on at the back of the projector? Check that the power
cord is properly connected at the both the wall outlet and the projector.
3. Does the green "Status" LED flash with each key press? If not, DLV 1280 is
not receiving the keypad's IR signals. Ensure the keypad is directed at either
the front or rear of the projector, or at the screen. Also make sure that the
path between the IR keypad and the projector (or screen) is not blocked.
4. The batteries in the IR remote keypad may be weak. Refer to 4.3, Replacing
Keypad Batteries for instructions.
5. The IR keypad may have been disabled by a change in protocol. See 2.10,
Keypad Protocols and 3.7, Adjusting and Checking System Parameters.
6. Use
the
key on the built-in keypad to turn the projector on.
The projector is on but there is no display of source input...
1. Is an active source connected properly? Check the cable connections. Is that
source/channel selected? Press
,
,
, or
to select. Or
use
to switch to other sources or channels. See 2.4, Connecting Sources
and 3.5, Working With Sources and Channels.
STEP 5
'
STEP 6
'
4.7
Trouble-
shooting
Symptom
'
CAUSE / REMEDY:
Symptom
'
CAUSE / REMEDY:
