Checks / troubleshooting:
1. Check if there is paper jam around Grid
Roller or any foreign substances around
range of CR movement.
2. Check error record in “Test: Record” in self-
diagnosis function.
3. Move Carriage from side to side while
printer is turned off and see if there is
anywhere Carriage does not move smoothly.
4. 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.
5. Check if T fence is dirty or twisted.

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
it.
• 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