Troubleshooting of Regular Malfunctions 13-9
13.7 LCD Display Failure
13.7.1 Related Modules or Boards
No. Description Remarks
1 Display (Monitor) assembly Attached
2 PC carrier board /
3 PC module /
4 IO board /
5 10.4-inch display assembly /
13.7.2 Key Points Supporting Troubleshooting
No.
Key Points Supporting
Troubleshooting
Remarks
1 Display module indicator At the right bottom of the display
More brighter in the darkness
3
Video output interface of VGA, HDMI for
IO back board.
External LCD is needed.
4 Display mode of the LCD
Blank screen, “No Signal” or blurry screen, etc.,
appears.
5
Display mode of 10.4-inch display
assembly.
Blank screen, “No Signal” or blurry screen, etc.,
appears.
6
The locking indicator of video output for
PC module.
On IO board.
13.7.3 Troubleshooting of the Monitor
No. Fault Description Cause Analysis Solution
1 Control panel powered on
normally;
No display (blank screen) on
the LCD;
Yellow indicator blinks;
The locking indicator of
video output for PC module
is on.
Display error Replace display
assembly.
2
Control panel powered on
normally; one of indicators
turns to orange.
No display (blank screen) on
Improper connection of the power
cord for the display or connection
error.
Control board error of the display.
Judge in field or replace
the display assembly.
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