[taner]

Description
F23-09 with lines, smudges or spots on copies.
Solution
PROBABLE CAUSES:
1. Insufficient airflow during idle causing internal machine temperature to rise. Toner is backing up or solidifying in the cleaning unit box for the transfer belt
causing the transfer belt drive motor (M18) to bind.
Replace the Belt Cleaning Unit (p/n 65LA R702 00) and install attachedSpecial Printer Control firmware(version 51-PBF0 for the 8050/CF5001 and version
12-PBF0 for the bizhub PRO C500 ).This firmwarekeeps M11 (Transfer Belt Cooling Fan) ON for a period after the copy process has completed which helps
keep the internal temperature at normal levels. The firmware can also be download from the Konica Minolta Download Selector. Access the Selector from
SSD Web Support (CS Expert Support) by clicking on 'Download MSDS, Drivers, Firmware and more'.
Note : Firmware version 51-PBF0 is primarily for the 8050, but can be usedfor the CF5001. When using the ISW tool to download the firmware please
select the 8050 from the drop down. If the CF5001 is selectedthe ISW tool will not see the file.
2. The paper exit fans (M61/M62/M63) DIPswitch is not turned ON.
Set software DIPSW 21-0 = 1 to enable the paper exit fans.
3. Dirty or failed transfer belt drive motor encoder disk sensor assembly.
Clean the transfer belt drive motor encoder disk and sensors. Replace the assembly (p/n 65AA -909 1E) as necessary.
4. Failed M18 transfer belt drive motor.
Replace M18 transfer belt drive motor (p/n 26WA 8001 3).