MAINTENANCE
Symptom:
The display is jittery or unstable.
Cause/Remedy:
1) The horizontal or vertical scan frequency of the input signal may be
out of range. Check the specifications in Section 5 for scan frequency ranges.
2) Synchronization signals from the source may be inadequate. Correct the source
problem.
3) The input signal type may not match the signal type required by the input module.
Install the correct input module/interface to match the signal type of the source.
Symptom
:
The upper portion of the display is waving, tearing, or jittering.
Cause/Remedy
:
1) This sometimes occurs when the source is a VCR or video signal.
Change the sync mode by selecting the fast/slow sync option from the Picture
Adjust menu (
PIC then 5
).
Symptom:
The upper or lower portions of the display are cut off.
Cause/Remedy:
1) A top or bottom blanking adjustment may be required. Select the
appropriate blanking adjustment option from the Picture Adjust Menu (
PIC
) then adjust
the amount of blanking.
Note:
A
0% slidebar level indicates no blanking.
2) A phase adjustment may be required. Select Phase from the Picture Adjust menu
(
PIC
). Adjust phase so that the entire picture is visible and centered.
Symptom:
One side of the display is cut off.
Cause/Remedy:
1) A left or right blanking adjustment may be required. Select the
appropriate blanking adjustment option from the Picture Adjust menu (
PIC
) then adjust
the amount of blanking. A 0% sliders level indicates no blanking.
2) A phase adjustment may be required. Select Phase from the Picture Adjust menu
(
PIC
). Adjust phase so that the entire picture is visible and centered.
3) The retrace time of the projector may be longer than the horizontal blanking time of
the signal. Press
UTIL 1 8
to change projector retrace time to Short.
Symptom:
Transitions between colors are fuzzy.
Cause/Remedy:
1) Convergence may require adjustment. Perform a convergence on the
selected source.
2) the projector may not be optically aligned for the installation. Has the throw distance
changed significantly since the last optical alignment? If so, have the projector re-aligned.
Refer to section 2.8,
Optical Alignment.
Symptom:
The display is very faint.
Cause/Remedy:
1) Contrast or brightness settings may be set too low.
2) The projection room may be too bright. Lower the intensity of projection
room lighting. Reduce light reflections as much as possible.
4-5
Summary of Contents for Model 8
Page 1: ......
Page 44: ...INSTALLATION SETUP Figure 2 29 ACON Installation Examples 2 38 ...
Page 104: ...Physical Dimensions 5 5 ...
Page 105: ...5 6 ...
Page 113: ...A p p e n d i x B B 1 ...
Page 114: ...B 2 ...
Page 115: ...C 1 ...
Page 116: ...C 2 ...
Page 117: ...D 1 ...
Page 118: ...D 2 ...
Page 119: ...E 1 ...
Page 120: ...F 1 ...
Page 121: ...F 2 ...
Page 122: ...F 3 ...
Page 123: ...F 4 ...
Page 124: ...F 5 ...
Page 125: ...F 6 ...
Page 126: ...F 7 ...
Page 127: ...F 8 ...
Page 128: ...F 9 ...
Page 129: ...F 10 ...
Page 130: ...G 1 ...
Page 131: ...Index 1 ...
Page 132: ...Index 2 ...