Checks / troubleshooting:
1. Check if there is paper jam around Grid
Roller or any foreign substances around the
range of CR movement.
2. Check the error record in “Test: Record” in
the self-diagnosis function.
3. Move Carriage from side to side while the
printer is turned off and see if there is
anywhere Carriage does not move smoothly.
4. Set the endurance time to more than 50
times in “Life: CR Motor” in the 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 the printer itself is not
damaged, check if the 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 the connection of the following
connectors.
MAIN board :
• CR motor connector
• CR_FFC connector
CR board :
• CR_FFC connector
• Check the connection to CR motor is
appropriate.
• Check if the tensions of CR speed
reduction belt and Steel belt are
appropriate.
Replace the following parts:
• T fence
• CR encoder
• CR_FFC
• CR motor
• CR board
• MAIN board