Epson TM U200D - B/W Dot-matrix Printer Technical Manual page 85

TM-U200D/U200PD Technical Manual
4 S S elf-test is not normal.
4 4
Is ERROR
Yes
LED flashing?
Take the steps described in
No
Error types and countermeasures.
END
Replace printer
mechanism assembly.
Yes
OK?
END
No
Replace main PCB
END
Rev. B Troubleshooting 4-7