Troubleshooting guide

P:\WINWORD\P:\WINWORD\Torch Service Guide 46 and 52inch screens\
Service Guide for EN069K series 46 & 52 inch LCD screen.doc Page 17
Computer and Screen Troubleshooting Guide
Problem Possible cause Actions
Check mains plug and fuse No power
Check screen input fuses
Computer is not operating Press red button. Check that
blue LED is on
LCD is not operating Press screen power button.
Check that red LED is on
No picture on screen or
RED light
None of the above Contact supplier
Hard disk or disk data or
power cable faulty
Contact supplier Boot media error
message
Software problem Re-install operating system
and/or artwork file
Message on screen:
“CMOS check sum error”
Corrupt CMOS or Battery fail Replace battery, reset
CMOS
Message on screen:
“Mode not supported”
Incorrect screen resolution Remove computer, connect
to external monitor and set to
1024 x 768, refit and set to
1920 x 1080
Blue screen errors Software or hardware
problem
Contact supplier
Cooling problem Check airflow is sufficient
Power screen off and on
Screen freezes or locks
up
Hardware problem
Contact supplier
If any of the problems are not resolved by the actions suggested, please contact
supplier.
Removal and Access to the Computer
Access cover
The red and green arrows point to six pairs of M4 screws. To gain access to the
computer remove the six inner M4 screws and lift off the access cover. To remove the
computer take out the six outer M4 screws and the supporting bars, disconnect the
cables and lift out the computer.