4 Troubleshooting
4-2
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4-2 No Power
(LS17HAA/LS17HAB/LS17HAT/LS19HAA/LS19HAT)
When Pin 4 of CN600 is 0V
does proper DC 13V, 5V
appear at Pin 1, 2 and 6, 7 of
CN600 separately?
Change IP Board.
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Yes
Yes
No
When Pin 4 of IC600 is DC 0.5V
does proper DC 0.5V appear at
Pin 5 and 6 of IC600?
Check IC600 and related circuit.
No
Yes
When Pin 2, 3 of IC601 is
DC 3.3V does proper DC 4.3V
appear at Pin 1 of IC601?
Check IC601 and related circuit.
No
Yes
When Pin 2, 3 of IC601 is
DC 4.3V does proper DC 2.5V
appear at Pin 4 of IC601?
Check IC601 and related circuit.
No
* 0V means power on state.
When the monitor work well except DPMS and power
switch off,
0V should be applied to number 4 of CN600.
*
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