Intermec 6820 Series User Manual page 140

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Chapter 7 Troubleshooting and Diagnostics
Possible Printer Problems (continued)
Symptom
No paper feed (paper jam or
head jam)
No paper feed (paper jam or
head jam) continued . . .
124
Test or Cause
Test: Pull paper toward roller.
Cause: If paper is resistant:
Paper tray too full
S
Torn paper perforation
S
Paper wrinkled, creased, moist, or per-
S
forations missing
White ribbon cables obstructing paper
S
Head Jams due to carriage alignment.
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Check line 29 on self-test report, under
"Position" header, for value.
Test: Move print head manually from
side to side.
Cause: If print head resistant:
Test: Remove ribbon cartridge, move
print head. If smooth, ribbon is
jammed.
Test: Remove ribbon cartridge, move
print head. If still resistant,
mask spring is bent or damaged
is bent or damaged.
Cause: Print head gap adjuster too tight.
Cause: Paper scraps found in printer
mechanism or around platen.
Printer mechanism unlatched (unlocked).
(portable, fixed mount printers)
Printer has a glitch not defined above.
Note: In paper jams or head jams, press the SET PAGE button to clear
the printer before printing can resume.
Solution
Ensure fewer than 200 3-ply sheets in
S
the deep paper tray and fewer than 50
3-ply sheets in the shallow paper tray.
Remove torn paper, load and center
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new paper, readjust pinfeed holders.
Replace the paper.
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Straighten the white ribbon cables.
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If "0," realign mechanism in pivot tray.
S
See page 107 for printer mechanism
alignment instructions.
Remove ribbon cartridge and turn knob.
If ribbon resists, replace ribbon cartridge
(see page 16 for instructions).
Replace the mask spring (see page 29).
Set the head gap adjuster to the fifth
notch away from the paper (see page 17).
If ribbon cartridge bumps against inside
of printer, check white ribbon cable,
home position sensor, and four screws.
Remove any paper scraps, do a cleaning.
Latch (lock) the printer mechanism into
place.
Do a self-test.
6820 Series 80-Column Printer User's Manual