Loveshaw MicroJet I - E) Weak Print;Output; F) Printing Starts Heavy and Weakens When Printing Long Messages; G) Photocell LED(S) Does Not Light; H) Photocell LED(S) Does Not Turn off

E) Weak print/output
* Check dot size; increase as needed.
* Check purge output; all nozzles to give a 2 inch stream of ink or greater.
* If weak printing continues, go to letter “C” testing ink flow.
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F) Printing starts heavy and weakens when
printing long messages
* Purge for air removal.
* Check purge, which should be steady; if not, go to letter “C” testing.
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G) Photocell LED(s) does not light
* Test photocell by placing a white piece of paper directly in front of unit;
LED(s) should come on. If not, turn photocell holder(s) gently from side to
side and note if LED light(s) come on; leave in position that lights LED(s);
slowly pull paper back from unit and note distance at which LED goes out;
should be 2 inches or more. If not, replace photocell . (See Quick Reference
Chart for part numbers.)
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H) Photocell LED(s) does not turn off
* Check that there is no reflective material in front of unit. If so, the material
should be painted a “flat black” color (infrared does not reflect well off of a
flat black surface.)
* Turn photocell holder(s) gently from side to side and note if LED light
goes out.
* Power the unit off then on; LED light should be off, if not, look for ink or
water on board(s) or unit.
* If ink or water is on boards remove and flush/dry overnight. Retest next
day.
* LED light is on, and will not go out, replace CPU board (See Quick
Reference Chart for part numbers.)
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MICROJET Trouble-Shooting Guide 4