How do l reset my OKI c9650 yellow drum, l have the fuse but didn't came with the manual. In addition the printer has been saying the top cover is not closed though it looks like its all closed well.

Some password need, when "System Maintenance" is displayed... :-(

The printer must be put back into "Shipping Mode" in order for the consumable counters to reset.

In order to place the printers back in “Shipping Mode,” do the following:

1. Shut down the printer and press RESTART. Press and hold the [UP], [DOWN] and [HELP] keys at the same time while
restarting the printer. Hold the keys until the display reads "Please Wait" to go to the System Maintenance Mode.
2) Press + or - until "Engine Diag" Mode is displayed; press Enter and Diagnostic Mode xx.xx.xx will be displayed
3) Press and hold both Enter & On-line simultaneously until Eng Diag Level3 is displayed

4) Press + or - until Local Parameter Set is displayed; release and press Enter

5) Press + or - until it displays Factory Mode; if it displays Factory Mode Twice with an asterisk next to one then it is in Factory Mode; Press Enter, Press + or - until it displays Factory Mode & Shipping Mode on the display; then press and hold On-line & Cancel simultaneously; when it stops blinking an asterisk should be displayed next to Shipping Mode, which becomes the default mode.

6) Power printer off then on to complete the procedure.

If not mistaken, the password is 5 zero (00000).