Datamax M-Class Mark II Maintenance Manual page 51

Step
Do streaks or dropouts run in the direction of
3
media travel?
Do dropouts run perpendicular to the direction
4
of media travel?
Are printed characters or images
5 inconsistently irregularly sized, compressed or
enlarged?
Do the lines or missing data run diagonally,
6 intermittently and erratically through the
label?
(continued)
Troubleshooting
Procedure
3-9
Result Action
1) Bad media. Switch
sources then retest;
2) Wrong firmware
(see Section 2.8);
3) Wrong, dirty, or
defective printhead.
Clean (see Section
Yes
2.1.1) or replace it
(see Section 4.3);
or,
4) Dirty or worn
platen. Clean (see
Section 2.1.3) or
replace it (see
Section 4.8).
No Go to Step 4.
Yes Go to Step 5.
No Go to Step 6.
1) Defective gear or
worn drive
component (see
Section 4.7);
2) Replace the Power
Yes
Supply PCB (see
Section 4.5); or,
3) Replace the Main
Logic PCB (see
Section 4.4).
No Go to Step 6.
Misadjusted ribbon
Yes path component (see
Section 2.6).
No Go to Step 7.