Intermec 6820 Series, User Manual

Page: 140 / 184

Troubleshooting and Diagnostics Chapter
—
7
124 6820 Series 80-Column Printer User’s Manual
Possible Printer Problems (continued)
Solution Test or Cause Symptom
No paper feed (paper jam or
head jam) Test: Pull paper toward roller.
Cause: If paper is resistant:
S
Paper tray too full
S
Torn paper perforation
S
Paper wrinkled, creased, moist, or per-
forations missing
S
White ribbon cables obstructing paper
S
Head Jams due to carriage alignment.
Check line 29 on self-test report, under
“Position” header, for value.
S
Ensure fewer than 200 3-ply sheets in
the deep paper tray and fewer than 50
3-ply sheets in the shallow paper tray.
S
Remove torn paper, load and center
new paper, readjust pinfeed holders.
S
Replace the paper.
S
Straighten the white ribbon cables.
S
If “0,” realign mechanism in pivot tray.
See page 107 for printer mechanism
alignment instructions.
No paper feed (paper jam or
head jam) continued . . . 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.
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.
Note : In paper jams or head jams, press the SET PAGE button to clear
the printer before printing can resume.