Card Reader communication trouble. 
This indication is displayed if a Card Reader is not 
detected correctly when a Card Reader is registered on 
the MFP. 
Enter User Control – Card Type/ Card Reader Settings 
menu and uncheck Use IC Card for Authentication 
And/or de-register the Card Reader from Card Reader 
Device Registration menu via the operation panel. 
HDD Trouble: Use SIM62-20 to check the HDD status. 
For troubleshooting, refer to the MX-EB12 Mirroring Kit 
section within this guide. 
Check if the Black drum cleaning blade has flipped.  
Also check the condition of the primary transfer belt 
unit. 
E6-11 trouble after replacing the DSPF 
Control PWB or DSPF CCD Unit. 
DSPF Shading Adjustment (SIM63-2) must be executed 
after replacing the DSPF CCD Unit, DSPF Control PWB 
or following U2 trouble.  
Use DSPF Shading Adjustment Sheet [UKOG-0333FCZZ], 
E7-07 error when sending or receiving 
large volume of fax jobs 
Upgrade the firmware to 04.00.R1 (or higher). 
To support MX4111/5111N series and prevent E7-48 
trouble, the MXEB11 firmware must be upgraded to 
02.00.A1 (or higher). 
Check PCL Flash ROM , replace if required. 
Also ensure to upgrade the Firmware to current version 
F1-00 trouble after a firmware 
upgrade 
When performing a firmware upgrade on the Inner 
Finisher, ensure to select both BOOT & MAIN firmware 
after executing Sim 49-01. 
Due to a recent change, both BOOT & MAIN firmware 
versions have been upgraded however, if only the 
MAIN firmware is selected and upgraded, F1-00 trouble 
may be experienced when using the combination of 
original BOOT and current MAIN firmware versions.  
Upgrade the MXFN10 Firmware to v01.10.02 (or 
higher) for improved Gripper control 
Ensure "Super Lube" Synthetic Multi-Purpose Grease 
(SUP21030) is applied to the square shaft within the 
staple unit otherwise, the gripper drive gear (PG: 
Section 24 item 11 - 0CW4158P418//) may wear 
prematurely, causing it to bind under load. 
U5-16 trouble (DSPF cooling fan 
permanently runs) 
Replace the DSPF Driver PWB (CPWBN1982FCE1). 
Constant Error 1206 when adding an 
address destination - even after 
resetting system settings back to 
factory default. 
Check the HDD operation for bad or corrupted 
partition. Execute Sim 62-01 and format the HDD.  
If the problem persists after formatting, replace the 
HDD unit.