Bematech KB-1800 - Manual (Page 20)

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’S
MANU
A
l KB
-1800
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evision 1.3
20
Chapter 6
Troubleshooting
The following table described some of the problems that might occur while using the printer. For every problem there
is a possible cause described here and a suggested procedure to solve the problem.
Problem
The printer does not turn on.
The printer does not respond to
the commands sent.
Parallel communication is
faulty.
Serial communication is faulty.
Possible Cause
There is no power in the electric
outlet.
A problem with the power cord – it
may be broken or not well connected
to the printer and / or outlet.
The parallel / serial / USB cable
has one or more lines with faulty
connections / broken wires.
Wrong programming sequences.
The parallel cable has one or more
lines with faulty connections /
broken wires.
The pin layout does not follow the
Centronics standard.
The serial cable has one or more
lines with faulty connections / broken
wires.
The pin layout does not follow the
correct protocol.
The baud rate is incorrectly set.
Possible Cause
Check if there is a central switch
for the room / outlets. Connect some
other equipment to the outlet to
check its operation.
Turn off the printer, check the power
cord’s continuity and a perfect
connection between the printer and
the electric outlet.
Check for a good connection between
the printer and the host or change
the cable.
The programming sequences can be
checked in the dump mode. Put the
printer in dump mode and run your
application again. The printer will
show the hexadecimal and ASCII
codes of all bytes being received
from the host.
Check for a good connection between
the printer and the host or change the
parallel cable.
Check the correct pin layout in this
manual.
Check for a good connection between
the printer and the host or change the
serial cable.
Check if the pin layout used complies
with the protocol being used for data
transmission. Remember that the
printer uses the DTR/DSR protocol.
If the baud rate set on the printer is
different from the baud rate of the
host, the printer will print random
characters or not print at all. Check
carefully the host’s serial baud rate
configuration as well as the printer’s
DIP switch settings.