Citizen CT-S4000

CT-S4000 Service Manual
12
2. TROUBLESHOOTING
2.1 Error Indication
z Paper end
Paper out is detected in two steps: paper near-end and paper end. ERROR LED will light
when the paper is empty. If paper end is detected, refill the paper. If the printer cover is open,
a paper-end is detected.
z Printer cover open
During printing, do not open the printer cover. If you open the printer cover accidentally, the
ERROR LED blinks. Check the paper, pull the paper straightforward several cm (or inches)
out of the printer, and then close the printer cover. Printing resumes automatically. Sending a
command to resume printing may be required depending on the memory switch setting.
z Thermal head overheat
When you print dense characters or dark image, the head temperature rises. If the head
temperature exceeds a specified level, the printer stops printing operation and waits till the
head temperature is lowered. During waiting, the ERROR LED blinks. When the head
temperature is lowered, printing resumes automatically.
z Cutter lock
If the cutter blade stops operating due to paper jam or the like, the ERROR LED blinks.
Remove the cause of the trouble and press the FEED button. If the blade still does not move
and the printer cover cannot be opened.In this case, do not open the paper cover forcibly.
Insert a Phillips screwdriver (size #1) into the cutter lock releasing feed hole and turn it in the
direction of arrow (clockwise).
When you find that both ends of the blade reached the lowest position, stop turning the
screwdriver. Open the cover and follow the procedure of removing jam or other cause of
trouble.