Epson TM-U375 - JOURNAL out LED Is Lit; ERROR LED Is Lit

4-4
2 JOURNAL OUT LED is lit
2
Turn power off, then on again.
OK ?
Yes
No
3 ERROR LED is lit
3
OK ?
Yes
No
Turn power off, then on again.
No
Yes
Is cover open sensor
continuity on switch PCB unit
normal? (✽)
END
Replace switch PCB
unit.
END
OK ?
Replace main PCB.
END
Yes
No
(✽) To check the continuity of the cover open sensor:
Check the voltage at terminals 1 and 3 of CN2 on
the switch PCB unit for the following:
5 V when cover open is detected
0 V when cover close is detected
END
Is printer cover closed
correctly?
Close the cover correctly.
OK ?
END
Yes
No
No
Yes
Is near-end sensor
continuity normal?
Replace near-end sensor assembly.
No
Yes
OK ?
Yes
No
END
Replace main PCB.
END
CONFIDENTIAL