Van Mechelen 1000 SERIES User Manual - page 14
Document No : DS8078
Issue : J
Page 14
1.6
Troubleshooting
(1)
The power light does not come on when the unit is switched on.
Check the batteries are sufficiently charged or that the power adapter is connected correctly. If
the power resource is satisfactory and the LED still does not illuminate when the power is
switched on, refer the unit for repair.
(2)
The power light comes on but the printer does not feed paper.
This is a head jam condition. Check that there is no paper jammed in the mechanism.
(3)
The paper is not feeding properly.
If the print looks squashed, check that the paper roll is sitting correctly in the paper well and that
the roll is the right way up. The paper should be feeding off the bottom of the roll into the back
of the mechanism, NOT off the top of the roll. Remove paper and reload if necessary.
(4)
No print on the paper.
If the printer is working but no print is visible, check that the ribbon is present and not
excessively worn and that it is freely moving round the cartridge. Wind the ribbon on manually
then feed paper while the lid is open to check the cassette knob is rotating. Also check that the
ribbon has been fitted correctly and that the exposed ribbon is in front of the paper.
(5)
The printer does self-test but does not print data sent through the interface.
Check interface connections are correct. (See section 1.4).
(6)
The printer prints '*' in place of the transmitted characters or it does not action commands.
Check handshaking line, parity setting and baud-rate.
If a command is not carried out by the printer, it is possible to check for an incorrect control code
or character by initiating diagnostic mode.
Diagnostic Mode reveals control codes and characters sent to the printer. Characters 00H to 1FH
are translated to characters 40H to 5FH and underlined to indicate a control character.
EXAMPLE:
HORIZONTAL TAB (O9H) = CTRL I Printed as I
CARRIAGE RETURN (ODH)= CTRL M Printed as M
Normal characters are not underlined.