LG LAEC015 Service Manual page 35

AIO136 LED SIGNAGE Standard Repair Process
No. 증상 (대분류)
A. Video error
- No Video (entire screen turns
1
into black)
- No Video (partial screen turns
into black)
- Weird Pattern with an area
covering the multiple modules
2
of the screen
- Color Error
1
B. Power error
- No Power to entire screen
2
- No Power to partial screen
- Weird Pattern with an area
3
covering certain part of the
single module
4
C. Exterior Defect
1 - LED Defect (Line/Dot Defect,
etc.)
상세 (소분류)
Check the Indicator on the System Controller FPGA board.
Check LAN Cable connection.
(cabinet <-> cabinet, HUB board <-> HUB board)
Check the power of the system controller's main / FPGA
board
Check PSU / HUB board
Check AC Cable connection between left half and right
half
Check Power Controller board
Page Remarks
A1
A2
B1
B2
B3
B4
C-1
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