Oki ES3640MFP Service & Troubleshooting Manual page 123

Engine Board Flash Memory Error
Error Codes that Apply
240
Flash memory Hardware
244
Tray 4 Flash Memory
Initial Troubleshooting Actions to Take
1. Cycle the printer's power.
2. If the problem persists follow the procedure below.
Parts of the Printer that Apply
1. Engine Control Board
Troubleshooting Procedure
Steps
Cycle power to the printer.
1
Does the error reappear?
241
247
Action Taken
Duplex Flash Memory
Sub CPU Flash Memory
Yes
Replace the Engine
Control Board
243
Tray 3 Flash Memory
248
Inverter Flash Memory
No
Complete