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Troubleshooting
CL-S6621 4-8
Symptoms Checks Remedies
Poor printing 1. The “SA, Head” is dirty.
2. Thickness adjustment is improper.
3. Is +24V supplied to the pins 1-4 of J15
on the “SA, Main PCB”? (GND: Pins
5-8)
[Bottom right of the “SA, Main PCB”]
1. Clean it with a head cleaner.
2. Adjust the media thickness
adjustment dial to suit to the media
thickness being used.
3. Replace the “Unit, Power Supply”.
Uneven print density 1. Head balance is improper.
Uneven print density may appear either
on the right side or the left side.
1. Adjust the media width adjustment
dial to suit to the media width
being used.
4-2-4. Ribbon-feed Problem
Symptoms Checks Remedies
Ribbon is not fed at
all, or is not fed
correctly.
1. Is the ribbon correctly inserted into the
ribbon holders?
2. Is the ribbon path correct?
3. Is the cable connected between J19 on
the “SA, Main PCB” and J102 on the
“SA, Ribbon PCB” firmly?
4. Are the cables connected between
J101/J107 on the “SA, Ribbon PCB”
and the “SA Ribbon Motor F” firmly?
5. Is the cable connected between J103 on
the “SA, Ribbon PCB” and the “SA
Ribbon Motor R” firmly?
(to be continued)
1. Insert the ribbon correctly.
2. Install the ribbon correctly.
3. Connect it firmly.
4. Connect them firmly.
5. Connect it firmly.