Rockwell Automation 6157 Industrial 20 inch Monitors - Manual (Page 23)

Industrial 20" CRT Monitor 23
Publication 6157-5.1
You can refer to this table to help identify the cause and offer a solution
to a problem. This table lists typical problems you may encounter.
Table A
Troubleshooting Table
Symptom Possible Problem Action
None of the status LEDs are lit. Power cord not connected. Open power switch. Reconnect power cord at
monitor and at AC outlet. Close power switch.
No power available at AC outlet. Test AC outlet by plugging in a lamp or other
known good device.
Blown fuse. Replace fuse. Refer to Page 21.
Power cord faulty. Replace power cord. Refer to Page 22.
Monitor faulty. Have monitor serviced.
One green status LED is lit, but no screen
image when power switch is closed. Screen saver activated. Disable screen saver by activating an input to the
host system.
Brightness and contrast controls
not properly adjusted. Adjust brightness and contrast controls.
More than one green status LED is lit, but
no screen image. Monitor out of adjustment. Turn monitor OFF and then turn back ON.
The amber SCF status LED is lit and one
green status LED is lit. Monitor is in secondary control
function mode. Press both arrow buttons simultaneously to exit
secondary control function mode. Refer to
Page 19.
Only the amber SCF status LED is lit, and
no screen image. Monitor not synched to video
source. Check for proper video cable installation. Replace
suspected faulty cable.
Check to ensure that video source is operating
within the monitor’s range.
Monitor faulty. Have monitor serviced.
No raster visible even when brightness
and contrast controls are set full ON. Monitor out of adjustment or
faulty. Have monitor serviced.
Raster dimly visible with brightness and
contrast controls set full ON, but no
display present Video cable problem. Check for proper installation of video cable(s).
Refer to installation instructions.
Replace suspected faulty cable(s).
Fault in video source. Test video source by connecting to another
monitor that is known to be operational.
Fault in monitor. Have monitor serviced.
Display is present, but garbled or rolling Monitor not synched to video
source. Refer to installation instructions.
Check for proper video cable installation. Replace
suspected faulty cable.
Check to ensure that video source is operating
within the monitor’s range.
Display is present and stable, but appears
“wrapped” at one side or otherwise not
properly centered or sized. Size and position controls not
properly adjusted. Adjust controls for proper size and position of
display. Refer to operator instructions
Troubleshooting