Lacerta M-GEN User Manual page 52

the LEDs. If these LEDs are flashing sometimes ("rarely"), the autoguiding is working
well. You may discover (and keep off) many symptoms, like:
o Oscillation. The LEDs in the opposite directions (along one axis) will flash
alternating left-right-left-.. and so on for example.
o Backlash, stucked gears or ST-4 cable contact error: one LED flashes almost
constantly in one directon and it never ends.
o Etc.
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