Service manual

Troubleshooting and Diagnostics
6-9 6-10
6.6 Ribbon or Carriage-related Problems
S Ribbon Problems
S Make sure that the ribbon is:
S Stretched correctly
S Not worn thin or dry
S Not torn or damaged in any other way
S Not jammed
S Carriage does not move smoothly
S Examine the paper pathway. Remove any obstructions. Check that all
packing material is removed.
S Examine the carriage area for obstructions. Remove where necessary.
6.7 Print Tests
There are three different print tests as well as one interface test built into the
printer.
S I/F TEST is used to test the serial interface. It initiates data to be sent from
the printer and be returned by means of a closed loop connector plugged
into the serial interface connector. The test data used consists of PRINT
TEST 1 .