4-2
Maintenance
Rev. A
Confidential
Removing Stains (Except for the Thermal Head)
The areas where the paper is fed will be stained or collect dust after printing for a long time
because of paper dust and heat sensitive materials contained in the paper. Especially, if paper
feed rollers, the platen, or the paper detectors are not clean, a malfunction in paper feeding or
paper detection may occur. In this case, wipe off the stains with alcohol.
CAUTION:
Never use thinner, benzine, trichloroethylene, or ketone group solvents, since they could
damage rubber and plastic parts or cause them to deteriorate.
Removing Dirt and Dust
Use an electronic vacuum cleaner to remove dirt and dust. After cleaning, check the lubrication
point and lubricate when necessary.
Note:
When opening the units and cleaning them, be sure not to damage parts and paper detectors, disconnect
wires, or unplug connectors.
Removing Foreign Matter When the Cutter Locks
Follow the procedures below to remove foreign matter when the cutter of the printer module
locks.
After rotating the
motor
in reverse so that the
movable cutter blade, full
returns to the home
position, shut off the current to the
motor
; then remove any foreign matter. (See Figure 2-20 on
page 14 in Chapter 2 for checking the home position.)
If the
movable cutter blade, full
fails to return to the home position even after executing the
above procedure, follow the steps below.
1. Shut off the current to the
motor
.
2. Rotate the knob on the
gear, cutter worm
with a tool, such as tweezers, so that the
movable cutter blade, full
returns to the home position; then remove the foreign
matter.
