White patches,
horizontal lines
appear
(1) Execute "Normal" cleaning up to 3
times, then do "Full" cleaning once.
Dirt in the print head
Dirt on the head caps
Air bubbles could be the cause
Execute "Normal" cleaning up to 3
times, then do "Full" cleaning once.
Execute "Normal" cleaning up to 3 times, then
do "Full" cleaning once.
Allow the printer to set unused overnight.
X
(2) Allow the printer to set unused
overnight.
Air bubbles could be the cause Allow the printer to set unused
overnight.
Allow the printer to set unused overnight.
X
(3) Amount of paper loaded not
adjusted.
Amount of paper loaded not
adjusted
Remove some paper to adjust the
amount of paper loaded in the cassette
for paper feed.
Remove some paper to adjust the amount of
paper loaded in the cassette for paper feed.
X
(4) If the problem is not solved, repair
the printer.
Clean the maintenance unit and carriage. X X
Replace the maintenance unit. X X
Replace the carriage.
X
Vertical white
lines
Check the original image. Replace the horizontal encoder. X
Vertical white
patches
(1) White lines from top to bottom Horizontal encoder is dirty or
damaged.
Replace the horizontal encoder X
(2) Correct after confirming the size
and frequency of the vertical
patches.
Horizontal encoder is dirty or
damaged.
Replace the horizontal encoder X
(3) Partial white lines, about 32 mm in
length
Carriage FFC (Flexible Flat
Cable) disconnected (or poor
connection).
Replace FFC (Flexible Flat Cable).
X
Only 1 line
printed at
leading edge
(1) Check the type of paper in use.
Paper with punched holes being
used. Paper not of solid color, or
used paper being used.
Paper width incorrectly detected
Paper with punched holes, and
other paper, return incorrect
paper width readings.
Replace the paper. Replace the paper. X
(2) Check the transport belt for dirt.
If the transport belt is dirty, this
will cause errors during paper
width detection.
Clean the transport belt. Clean the transport belt.
X
(3) Check for paper jams. If the transport belt is dirty, this
will cause errors during paper
width detection.
Clean the transport belt. Clean the transport belt. X
(4) Check the reverse sides of the
paper for dirt.
If the transport belt is dirty, this
will cause errors during paper
width detection.
Clean the transport belt. Clean the transport belt.
X
Only 1 line
printed at
leading edge
(cont.)
(5) Visit the work site and check the
environmental conditions. Make
sure printer is not near an
appliance that generates a strong
magnetic field.
A strong magnetic field could
interfere with the operation of the
registration sensor, resulting in
errors during paper width
detection.
Move the printer to another location
away from the equipment or appliance
generating the strong magnetic field.
Move the printer to another location away from
the equipment or appliance generating the
strong magnetic field.
X X
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