Thermal Printer C-56
Part No. 2 684 019 Rev. No. 4310715 eli page 11 of 17
5.0 Troubleshooting
The paper path in the printer mechanism is almost straight so that proper paper feed and guiding will prevent
paper jams (see also Fig. 2). The following malfunctions if any will be recognized and signaled by the integrated
controller:
Paper Insert Error In case the 'Automatic Paper Insertion' starts, but the paper has been held
back by hand too long time or has been fed in skewed, the paper path can
indicate a ‘Paper Insert Error’ caused by a time out of the sensor routine.
As failure corrective action, pull the paper back. In case the paper has
already been transported by the platen, left the printhead, pull back the
paper and restart the loading procedure.
No Paper Insertion In case the ‘Automatic Paper Insertion’ does not start and the motor stalls,
with a characteristic rattling sound. If the printer has been left with no paper
inserted for a longer period (e.g. a day or more), the printhead can cause a
temporary depression of the platen and the motor will not start turning.
Lift the printhead using the head lift lever (see Fig. 5) and insert paper.
Release the head lift lever after the motor begins to run smoothly and the
platen begins to pull the paper. Continue the auto loading procedure.
Paper Jam During operation, a paper jam may occur in the eject chute due to paper
scraps, etc. Jamming may also occur from reversing the paper for more than
the 150 mm specified maximum reverse distance.
As failure corrective action, tilt the printer mechanism open and remove
any paper scraps found at the entrance into the eject chute. In case the eject
chute has been clogged deliberately (vandalism), the chute will have to be
dismounted and cleaned. Afterwards repeat the paper loading routine.
Paper End The sensor L1 (a or b, depending upon the variant of sensor placement) will
detect the end of the paper, e.g. in case of a torn paper web.
As failure corrective action, remove the document that has already partly
been printed (see Paper Jam) and repeat the paper loading routine. If
necessary, load a new paper roll.
Paper Pre-End The sensor L1 recognizes the 'paper pre-end mark' so that the controller can
transmit the status message 'Paper Pre-End' upon receipt of the Query
Status command. Alternatively, if so equipped, sensor L4 will detect that the
paper roll diameter has decreased to the point that it is no longer reflecting
the side of the paper roll when in the rest position, and will transmit the
‘Paper Pre-End” status message when queried. In either case, the printing
of further documents will not be blocked unless the printer detects 'Paper
End'. A new loading operation will cancel this message.
Undefined Error In case none of the above mentioned failures is detected, the printer may be
blocked by the operating system because e.g. the printer is not recognized
by the PC. If no other obvious disorder of the operating system is found, we
recommend as failure corrective action to disconnect the USB cable from
the PC. The operating system will then deactivate the driver software. Re-
establish the USB connection after an interruption of about 1 minute in order
to re-activate the driver software.
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