Troubleshooting Symptom Charts /Printing - 9
Printing continues
with front cover open
1 Test cover-open sensor, and replace if defective.
2 Replace main board.
Uneven print pattern
on self-test (four
lines light, three
dark)
Printer is sensing color ribbon carriage. Make sure black ribbon
carriage is pressed down completely on left side to activate ribbon
microswitch.
Printing has
squashed lines;
misregistration
problems when using
pin feed paper
1 Instruct customer to use pull tractor and bottom feed slot
with paper stacked at least 12 inches below the printer.
(The straightness of this paper path combined with the pull
tractor helps keep paper securely around platen.)
2 Make sure power cord or printer cable does not obstruct
paper path, and instruct user to avoid printing in top and
bottom one inch of paper.
