UBI EasyCoder 501 SA, Руководство по обслуживанию

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UBI EasyCoder 501 – Service Manual
196
26. TROUBLE SHOOTING, cont'd.
26.3
Printing Troubles, cont'd.
Continued!
All or most dots printed
• If the printer unexpectedly produces completely or partially black
printout regardless of label layout, check the printhead voltage
+24V. If too high, in the range of 40 to 50V, the trouble probably
originates from the power supply part of the CPU board. Repair
if possible, or else replace the CPU board.
The printhead is most certainly damaged and needs to be re-
placed.
Printed line along dot row at startup
• Probably damaged printhead. Proceed as described above under
“All or most dots printed”.
Paper feed does not work
• Clean the pressing roller. Paper dust can deteriorate the paper feed
function. Clean the label stop sensor as well while you are at it.
• Check the tension of toothed belt that drives the pressing roller.
Adjust as explained in chapter 8.4.
• Verify that a print command is actually issued in the current UBI
Fingerprint program.
• If there is an interruption in paper feed during printout, the trouble
may be that the program takes an unusually long time to process
data for each new dot row, which prolongs the interval between
motor steps. The stepper motor loses momentum and may even
stop completely emitting a whizzing sort of noise.
Remedy: Increase the image buffer as described in the Technical
Manual (Setup; Memory allocation). By doing this, you preproc-
ess more data before printing starts, which speeds up the printout.
Or else, avoid sending new print data while the printer is busy with
a printout.