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Section 5: Troubleshooting
5-2 RPMSP & CSP70-D100U User’s Manual
4. The projector will power down if the lamps were installed incorrectly or have
failed. If the projector powers down during lamp replacement, it likely indicates
the interlock has been in the open state for more than the allowed 2-minute time
frame. During a hot swap, make sure to install a lamp (good or bad) back into the
lamp compartment within 2 minutes otherwise the projector will power down.
Image appears “squeezed” or vertically stretched into center of screen
1. Check your Resizing selection.
The display is jittery or unstable…
1. If the display is jittery or blinking erratically, ensure that the source is properly
connected and of adequate quality for detection. With a poor quality or
improperly connected source, the projector will repeatedly attempt to display an
image, however briefly.
2. The horizontal or vertical scan frequency of the input signal may be out of range
for the projector. Refer to Section 6, Specifications for scan frequency ranges.
3. The sync signal may be inadequate. Correct the source problem.
The display is faint…
1. Brightness and/or contrast and/or gamma may be set incorrectly.
2. The source may be double terminated. Ensure the source is terminated only once.
3. The source (if non-video) may need a different sync tip clamp location.
4. Check if the lamp operation mode has changed. Check RS-232, status display and
lamp status for an indication of whether a lamp failed, or if a fan failed.
Turning White Boost ON appears to dim image…
1. For all new sources, perform Auto Setup (Main menu) and enable Auto Input
Levels before applying White Boost. Auto Setup should automatically optimize
your Input Levels for the most common sources. Only trained technicians should
modify Input Levels if further adjustment is required.
The display suddenly went dim…
1. Check to see if the lamp operation mode changed from Dual Lamp to Single lamp
– this could be due to a lamp failure, fan failure or if the lamp has expired.
The upper portion of the display is waving, tearing or jittering…
1. This can sometimes occur with video or VCR sources. Check your source.
Portions of the display are cut off or wrap to the opposite edge…
1. Resizing and/or blanking may need adjustment.
2. The horizontal or vertical scan frequency of the input signal may be out of range
for the projector. Refer to Section 6, Specifications for scan frequency ranges.
The display appears compressed …
1. The frequency of the pixel sampling clock is incorrect for the current source.
2. Resizing, vertical stretch and positioning options may be improperly adjusted for
the incoming source signal.
5.2 Displays
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