Adjustment Of The Black Mark Sensor Alignment - Star Micronics SP500 Series Technical Manual

3.

Adjustment of the Black Mark Sensor Alignment

1. Turn the printer off and unplug the power cord.
2. Remove the screws. Then, remove the DIP switch cover on the bottom of the printer.
VR22
VR22
3. Since it is adjusted by rotating the volume VR22, check the position of the volume. Prepare a small slotted
screwdriver that will fit in the hole.
4. Set the roll paper not for black mark.
5. Press the FEED switch on the printer's control panel while turning the power switch ON.
6. Enter the black mark sensor adjustment mode by releasing the FEED switch after the buzzer sounds four times.
7. Rotate the volume VR22 using micro screwdriver, to adjust it to a position whereat both the ERROR (red LED)
and the POWER (green LED) lamps light.
8. Turn the power OFF.
This completes the black mark sensor adjustment.
Power off
1 4
1 10
Fig. 1-7 Adjustment Volume
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