Checks / troubleshooting:
Check error record in “Test : Record” in self-
diagnosis function.
Set endurance time to more than 50 times in
“Life: PF Motor” in self-diagnosis function to
see if any errors related to PF motor such as
“PF motor error” occurs.
Check “Encoder: PF” in “Check: Test” – “Test:
Encoder” in self-diagnosis function.
Turn PF connecting axle by hand and see if
value displayed on panel changes as follows.
• Front feed direction: Increase
• Back feed direction: Decrease
• PF encoder may be damaged.
• PF encoder may be damaged.
• MAIN board may be damaged.

Recommended actions:
Check connection of following connectors of
MAIN board .
PF motor cable connector
PF_ENC connector:
Connector that is connecting PF motor and
PF motor relay
Replace PF encoder.
If Main power board is damaged, Replace.
Replace PF motor.
Replace MAIN board.