100

Maintenance

Fault Finding

Fault Finding

In connection with service of the printer it is good practice to remove paper dust and lint from the paper path, cutter and sensor areas. Paper dust, when accumulated, may interfere with printer functions such as optical sensors.

To avoid smudging the paper, do not apply oil on the cutting knife.

Table 6 • Fault Finding

Sympton

Suggest Actions

 

 

Nothing is printed when you press

Check that the paper roll is turned the correct way

the feed-forward button in self-test

 

with thermal sensitive layer facing up.

mode, but the document is

Check that the paper used meets the paper

transported, cut and ejected.

 

specification. See Paper Specification on page 112.

 

Check that the print head ribbon cable is fully

 

 

inserted into the connectors at each end.

 

 

 

Paper jam

Check cutter-home switch.

 

 

Printer does not work at all

Check that the paper release lever is lowered (print

 

 

head presses against the paper).

 

Check that power is supplied to the printer.

 

Check the function of the paper-out sensor.

 

 

Self-test prints OK, but the printer

Check that both ends of the interface cable are

works strangely in normal

 

properly connected.

operation.

Application program might be incorrect. Contact

 

 

system manager.

 

If using the serial interface, ensure that all

 

 

communications parameters match the PC's serial

 

 

port configuration

 

 

No cutting

Check that the connectors for the cutting

 

 

motor/home-position switch are fully seated on the

 

 

control board.

 

 

Bad cutting (uneven top and

Switch OFF printer and remove any obstructing

bottom document edges).

 

paper particles in cutter and presenter modules.

 

 

 

Inconsistent cutter operation

Check cutter-home switch.

 

 

 

Paper is fed straight through the

Check presenter sensor.

printer. Paper does not loop.

Check setting of parameter p9.

 

 

Missing print or irregular spots.

Paper may be too humid. Let it adapt to ambient

 

 

temperature and humidity for approximately 24

 

 

hours before use.

 

The paper used might not meet the paper

 

 

specification. See Paper Specification on page 112.

 

 

White longitudinal lines in the

Faulty print head, replace print module.

printout.

 

 

 

 

 

P1003636-002

TTP 7030™ Technical Manual

10/05/2009

Page 100
Image 100
Zebra Technologies TTP 7030 technical manual Fault Finding