Specifications

5-2
5.2 Fault Isolation
The following sections list possible fault syntoms and give tests you can make and
actions you can take to help to clear those syntoms.
Table 5-1 indicates what problems are covered in this chapter and where you can find
the relevant information.
Table 5-1 Problems Covered in this Chapter
Problem Areas Section Specific Faults
Power related Section 5.3.1 - No indicators on when power is switched on.
problems - At power on, the carriage does not move.
- Printing does not start.
- No response to computer commands.
LOCAL led is off.
- Carriage moves but there is no printout
during printing self-test.
- Pinfeed paper does not advance.
- Single sheet paper does not advance.
Operation-related Section 5.3.2 - LA 310 stops printing.
problems - No reverse paper feed.
- Paper is not positioned at perforation for
tear-off feature.
- Printhead carriage does not move smoothly.
- Carriage does not move.
Print-related Section 5.3.3 - Print faint or of poor quality.
problems - Character or characters do not print evenly
or are not uniform in pitch.
- Print lines overlap.
- Characters printed at a slant.
- Paper tears or jams.
- Font cartridge is installed and printer uses
internal character font.
- Printer does not stop when out of paper.
Ribbon or carriage- Section 5.3.4 - Ribbon problems
related problems - Carriage does not move smoothly