Laserdyne RMU User Manual page 34

:
User's Manual
Black Opal Models RMU
Flat Panel Display Systems
APPENDIX A:
# Symptom
1 System will not turn
on
2 Power supplied but
no display
3 No image
4 Controls do not
respond
5 Image lacks contrast,
brightness and
colour quality
6 Dark screen
7 Screen lay-outs
corrupt/imagery
1
garbled
1
e.g. pixels out of place, lines convoluted, menus illegible.
2
Factory defaults will be restored, so all lay-out changes will be lost.
UM-RMU-M-0288-0_1
FAULTFINDING GUIDE
Probable Cause(s)
a/ no power from remote
source
a/ temperature too low
a/ connected video or graphics
source not operating/sending
b/ connector dirty or faulty
a/ selected at inappropriate
point in menu structure
b/ faulty buttons
a/ settings inappropriate
a/ Backlight setting at minimum
a/ PC input refresh rate is not
60Hz or PC resolution is non-
standard
b/ EEPROM holding lay-out
configurations is corrupted
20.10.05 TW/TW
Remedy
a/ check power supply &
specifications, harness &
connections
a/ allow unit to warm up
a/ check operation &
specifications of connected
signal source
b/ check/clean/adjust
connector
a/ check operating
instructions
b/ service required, return
for diagnosis/repair
a/ adjust settings
a/ adjust Backlight setting
a/ adjust PC settings
b/ after turn-on, press and
hold all buttons 1 to 5
simultaneously for 10s;
release and wait for unit to
auto power down (approx.
30s); wait 5s then restart
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