Service manual

Confidential BTP-M280 Service Manual
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Note:
 Please do not touch the stationary blade and the moving blade of the cutter to avoid
damage when power on the printer.
7.6 Printer doesn’t work
1) Problems: The printer doesn’t work when power switch is on.
Possible causes and solutions:
¾ The power supply is not connected. Please check whether both sides power cable are
connected correctly or not. If not, please connect it; Check whether the Host computer
and the power supply are powered. If not, please connect it;
¾ The main control board is damaged, please replace it.
7.7 Problem during the printing process
1) Problems: HP error.
Possible causes and solutions:
¾ The tension of dentiform belt is too big, please adjust the tension (1kg~2kg force);
¾ The tension of dentiform belt is too small, please adjust the tension (1kg~2kg force);
¾ The space between the direction guide shaft and the bushing is too big, please replace
the bushing;
¾ The load of carriage driving is too big, please check whether foreign body exists in the
gears or not. If so, please clear it;
¾ The installation positon of HP sensor is not correct, please ask technical personnel to
install it again;
¾ The wire of HP sensor is broken, please ask technical personnel to replace it;
¾ HP sensor is damaged, please ask technical personnel to replace it;
¾ The main control board is damaged, please ask technical personnel to replace it.
2) Problems: Paper out action is abnormal.
Possible causes and solutions:
¾ Paper is jammed, please clear paper jam;
¾ The load of paper feed driving is abnormal, please check whether foreign body exists in
the gears or not. If so, please clear it;
¾ The wire of paper feed motor is damaged, please ask technical personnel to replace it;
¾ The paper feed motor is damaged, please ask technical personnel to replace it;
¾ The main control board is damaged, please ask technical personnel to replace it.
3) Problems: Paper feeding is continuously.
Possible causes and solutions:
¾ The current paper type is not accordant with the printer setting, please print self-test page
to confirm the printer setting and use the correct paper.