3-9
2 No Display On LED Module
2.1 Put a paper in between the M/B and the barebone, for preventing the M/B
shortcut with ground and Re-test again.
2.2 To check the connector between main board and power module had been
assembled / connected properly. (Fan on rear panel should rotate
continuously) if there
Is no power supplying to main board ( Yellow: +12V <-> Red: +5V measured
with universal voltage meter ), replace / change another new Power Module.
2.3 Check the FFC (18 pin) cable between main board and display board had
been assembled connected well.
2.4 Short the JP8 (on the main board) with jumper,
and then, plug with power cord to check if the text on the LED module had
been lighted on. (Test mode of Display Board had been activated). In case the
answer is negative, replace / change another new Display Board.
2.5 Replace / change another new Main Board. (There should be something wrong
with IC component: AT89S52, DMN-8652 .....)
http://www.jdwxzlw.com/?fromuser=华盛维修
To Next Page
Loading...
