Sindoh M403 - Manual (Page 216)

Maintenance and Troubleshooting
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10. Basic Printer Troubleshooting
Sometimes device problems can be easily resolved. Try below instructions when a problem occurs.
1 See 「Lamps」 (P.1-8) if the red lamp blinks.
2 Check if the power cord is correctly connected to the device and wall outlet.
3 Turn on the device.
4 Check if the device is on or power switch is damaged.
5
Check if other equipment connected to the same wall outlet is working.
6
Check if all parts are properly installed.
7
If the problem persists even after above instructions are followed. Turn off the device, wait 10
seconds, and then turn on the device again
Control Panel Troubleshooting
Trouble 1: LCD displays nothing.
Troubleshooting : Turn off the device, wait 10 seconds, and then turn on the device again.
If the message is not displayed, turn off the device and contact the dealer.
Device Troubleshooting
Trouble 1: Slow in printing paper with a width of less than 182 mm.
Troubleshooting : Narrow paper slows printing speed.
For faster printing speed, use 182 mm or wider paper.
Trouble 2 : The device cannot print at all or black stain is printed on the
right side of paper.
Troubleshooting : Check if the cartridge is properly installed. Open the
front cover and reset the cartridge.