Oki es7120 Reference Manual page 110

MESSAGE CONDITION/REASON/ACTION
Face Up Failure Error message displayed for Face-Up tray unit
failure.
Fan Failure Error message displayed for Fan failure.
File Error 26 Invalid format detected in the header of Firmware
Download attempt.
File Error 27 Bad checksum detected for one of the files included
in a Firmware Download attempt.
File Error 29 Download Type Mismatch - Firmware Download File
rejected due to mismatch in one of the following:
engine class, controller class, Download Format
class.
File Not Found Could not find a filter configuration file.
Filter Error Syntax error in data stream filter control. Detail of
error on line 2.
Firmware Upgrade Indicates "Firmware Upgrade" mode is active.
Format Error Failure during attempted format of flash.
Formatting Status display for file status.
Fuser Failure Error message for Fuser failure.
ID Mismatch Displayed for ID Mismatch on Drum/Toner
cartridge.
Incompatible Incompatible Duplex Option installed.
Duplexer
Incompatible OCT Incompatible Offset Catch Tray option installed.
Incompatible Tray 3 Incompatible Tray 3 Option installed.
Incompatible Tray 4 Incompatible Tray 4 Option installed.
Initializing Displayed during Power-on initialization.
Insert Tray Recovery action displayed when tray needs to be
inserted.
Install/Reset Recovery message displayed for ROS failure.
Load Paper Un-specific "Load Paper" prompt.
Load Paper Tray 1 A user prompt that paper needs to be loaded in
Tray 1.
Load Paper Tray 2 A user prompt that paper needs to be loaded in
Tray 2.
Load Paper Tray 3 A user prompt that paper needs to be loaded in
Tray 3.
Load Paper Tray 4 A user prompt that paper needs to be loaded in
Tray 4.
Lower Switch Face Up Tray failure.
Main Motor Fail Displayed for Main Motor failure.
Maintenance Reqd Used for error/warning when Maintenance is
required (replace fuser/rollers/etc). Press ON LINE
to continue for 10k additional pages.
Misfeed Jam Paper jam detected inside the printer.
Troubleshooting > 110