Checks / troubleshooting:
Check if there is paper jam around Grid Roller
or any foreign substances around range of
CR movement.
Check error record in “Test: Record” in self-
diagnosis function.
Move Carriage from side to side while printer
is turned off and see if there is anywhere
Carriage does not move smoothly.
Set endurance time to more than 50 times in
“Life: CR Motor” in self-diagnosis function to
see if any errors related to PF motor such as
“CR motor error” occurs.

Recommended actions:
After removing any foreign substances and
checking if printer itself is not damaged,
check if same error still occurs.
Check if T fence is placed between CR
encoders. If not, reassemble CR encoder
correctly. If T fence is damaged, Replace.
Clean and lubricate CR rail roller guide.
Check connection of following connectors.
MAIN board:
• CR motor connector
• CR_FFC connector
CR board :
• CR_FFC connector
Check connection to CR motor is appropriate.
Check if tensions of CR speed reduction belt
and Steel belt are appropriate.
Replace following parts:
• T fence
• CR encoder
• CR_FFC
• CR motor
• CR board
• MAIN board