Oki Microline 520 Service Handbook page 221

9. The ALARM light is not on, but paper needs to be loaded.
If the ALARM light is off, the printer "thinks" that paper is loaded. To correct this
problem, press and release the SEL button. Then, hold the SHIFT button and press the
RESET (Character Pitch) button. The ALARM light will come on and you will be able
to load paper.
10. The ALARM light is on and the Character Pitch 15 light is blinking.
This indicates a paper loading error. To stop the blinking light, press the SEL button.
Before trying to load paper, check to be sure that you have the paper lever in the correct
position (BOT, TOP, REAR) for the path that you are using.
CAUTION:
Always power OFF the printer before you turn the platen knob.
If the paper lever is in the correct position and you are using rear feed, lift up the paper
separator and check to be sure that the paper is properly on the tractors and has not
jammed.
If the paper lever is in the correct position and you are using the optional bottom-feed
push tractor, check the bottom tractor unit to be sure that the paper is properly installed
on the tractors and that the paper has not jammed.
Once the paper is correctly loaded, press and release the SEL button, then hold the
SHIFT button and press the RESET (Character Pitch) button.
11. Word processor files do not print the way the MENU and front panel are set.
Before sending a file to the printer, many word processors send either an initialization
string or an I-Prime signal to the printer.
The initialization string contains codes that reset the printer to a default set of features.
Otherwise, the printer might accidentally print using features set for a previous job.
These codes will override the panel or MENU settings. To set your printer to ignore the
reset codes, enter the printer MENU (hold down the SHIFT button while pressing
SEL/MENU button) and change the Reset Inhibit item (in the Setup Group) to Yes.
Please note that while this will stop the reset code from resetting your printer, but other
codes in the initialization string may still override the printer MENU and / or front panel
settings.
The I-Prime signal is sent over the parallel interface (pin 31) and will automatically
override any settings you have made using the front panel buttons. To eliminate this
problem, enter the Menu Mode (hold down the SHIFT button while pressing
SEL/MENU button) and change the I-Prime item (in the Parallel I/F Group) to Invalid.
Microline 520/521 Service Handbook
P/N 59257803
4 - 13 Failure Analysis