Operational Problems
3-26 Troubleshooting
Printer
The following table covers problems that may arise while printing.
NOTE Before replacing any parts, check to see if the cables and flex circuits are
properly connected. See "Servicing Notes" on page 4-1.
Also check for damage to the printer ribbon cable where the ribbon is cap-
tured in the connectors on each end.
Table 3-11 Operational Problems - Printer
Symptom Possible Causes Suggested solution
Paper won’t move. Paper improperly loaded or
jammed, or paper is wet.
Reload paper or clear jam. If paper
is wet, replace with fresh dry roll.
Printer failure. Replace printer.
Paper moves then stops. Door improperly latched. Check door latch.
Paper improperly loaded or
jammed.
Reload paper or clear jam.
Paper moves but printing is faint or
absent.
Door improperly latched. Check door latch.
Dirty printhead. Clean printhead.
Printer failure. Replace printer.
Control PCA failure. Replace Control PCA.
Paper moves but print quality poor
or some dots missing.
Dirty printhead. Clean printhead. See"Cleaning the
Printer Printhead" on page 4-5.
Printer failure. Replace printer.
Loud buzzing or grinding noise. Door improperly latched. Check door latch.
Waveforms or text distorted even
though they look OK on display.
Printer failure. Replace Printer.
Control PCA failure. Replace Control PCA.
Black line running along paper. Dots (printhead elements) stuck on
due to:
• Printer failure. Replace Printer.
• Control PCA failure. Replace Control PCA.
White line running along paper. Dirt on printhead. Clean printhead. See "Cleaning the
Printer Printhead" on page 4-5.
Dots (printhead elements) stuck off
due to:
• Printer failure. Replace Printer.
• Control PCA failure. Replace Control PCA.
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