2-72
Confidential
Error code 8505
When printing from paper tray 1 to 5, the T1 paper feed sensor detected open paper tray 1
(after registering printing data to engine).
Error code 8506
When printing from paper tray 2 to 5, the T2(LT or TT) paper feed sensor detected open
paper tray 2 (after registering printing data to engine).
Error code 8507
When printing from paper tray 3 to 5, the T3(LT or TT) paper feed sensor detected open
paper tray 3 (after registering printing data to engine).
Error code 8508
When printing from paper tray 4 to 5, the T4(LT or TT) paper feed sensor detected open
paper tray 4 (after registering printing data to engine).
Error code 8701
MX 1bin, 2bin, 3bin, or 4bin stack sensor or machine stack sensor detected the ejected paper
full state at the start of printing.
<User Check>
• Close the appropriate paper tray correctly.
Step Cause Remedy
1
Malfunction of an LT control
PCB or TT control PCB
Install the latest main firmware.
2
An LT/TT paper feed sensor
failure
Replace the appropriate LT/TT paper feed
sensor PCB ASSY.
3 An LT control PCB failure Replace the appropriate LT control PCB ASSY.
4 TT relay PCB failure Replace a TT relay PCB ASSY.
5 TT control PCB failure Replace the TT control PCB ASSY.
6 Main PCB failure Replace the main PCB ASSY.
<User Check>
• Remove the paper from all output trays.
Step Cause Remedy
1
Malfunction of the MX control
PCB
Install the latest main firmware.
2 Machine stack sensor failure Replace the machine stack sensor.
3 MX control PCB failure Replace the MX control PCB ASSY.
4 Main PCB failure Replace the main PCB ASSY.