Checks / troubleshooting:
1. Check the error record in “Test 7: Record” in
the self-diagnosis function.
2. Set the endurance time to more than 50
times in “Life2: PF Motor” in the self-
diagnosis function to see if any errors related
to PF motor such as “PF motor error” occurs.
3. Check “Encoder: PF” in “Check3: Test” –
“Test5: Encoder” in the self-diagnosis
function.
• Turn PF connecting axle by hand and see if the
value displayed on the panel changes as
follows.
• Front feed direction: Increase
• Back feed direction: Decrease
4. PF encoder Assy may be damaged.
5. PF encoder Assy may be damaged.
6. MAIN board Assy may be damaged.

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