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Table 3-11 Operational Problems - Printer
Symptom
Paper won't move.
Paper moves then stops.
Paper moves but printing is faint or
absent.
Paper moves but print quality poor
or some dots missing.
Loud buzzing or grinding noise.
Waveforms or text distorted even
though they look OK on display.
Black line running along paper.
White line running along paper.
Fails Printer Test in Diagnostic
Mode (other then symptoms above).
M3500B/M5500B Service Manual
Printer
The following table covers problems that might arise while printing. 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 captured in the connectors.
Possible Causes
Paper improperly loaded or
jammed, or paper is wet.
Printer failure.
Door improperly latched.
Paper improperly loaded or
jammed.
Door improperly latched.
Dirty printhead.
Printer failure.
Control PCA failure.
Dirty printhead.
Printer failure.
Door improperly latched.
Printer failure.
Control PCA failure.
Dots (printhead elements) stuck on
due to:
Printer failure.
Control PCA failure.
Dirt on printhead.
Dots (printhead elements) stuck off
due to:
Printer failure.
Control PCA failure.
Printer failure.
Control PCA failure.
Operational Problems
Suggested solution
Reload paper or clear jam. If paper
is wet, replace with fresh dry roll.
Replace printer.
Check door latch.
Reload paper or clear jam.
Check door latch.
Clean printhead.
Replace printer.
Replace Control PCA.
Clean printhead. See"Cleaning the
Printer Printhead" on page 4-9.
Replace printer.
Check door latch.
Replace Printer.
Replace Control PCA.
Replace Printer.
Replace Control PCA.
Clean printhead. See "Cleaning the
Printer Printhead" on page 4-9.
Replace Printer.
Replace Control PCA.
Replace Printer.
Replace Control PCA.
3
3-25
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