|
Problem |
Possible Causes |
Remedy |
|
no signal of servo board |
no power supply |
make sure the power supply are correctly connected |
|
burnt servo board after setup |
wrong polarity |
check polarity of power supply |
|
rhythmed oscilliation behavior of scnanner with normal red light on |
over-position protect |
check the input signal voltage range |
|
wrong trace conture of image field |
improper ratio of input signal or other related problem with input signal |
check the ratio of input signal |
|
interference in scan trace contour |
1 wrong cable connection |
check the cable connection |
|
|
2 problem with grounding |
make sure the grounding line is properly connected |
|
|
3 strong ambient source of interference |
make sure there is no strong ambient interference source |
|
|
4 low anti-interference ability of D/A control card |
check the anti-interference of D/A control card |
|
low power or no beam out of lazer |
deflecting mirror or its cover maybe damaged |
check the mirrors |
