5. System Maintenance Reference
Service Program Mode
• Make sure that the data-in LED is not on before you go into the SP mode. This LED indicates that
some data is coming to the machine. When the LED is on, wait for the printer to process the data.
Service Mode Operation
• The Service Program Mode is for use by service representatives only so that they can properly
maintain product quality. If this mode is used by anyone other than service representatives for any
reason, data might be deleted or settings might be changed. In such case, product quality cannot
be guaranteed any more.
Accessing the Required Program
Use the "Up/Down arrow" keys to scroll through the menu listing.
1. Service: Controller service modes
2. Engine: Engine service modes
3. End: Exit service mode
To select an item, press the "OK" key. Then the sub-menu shows.
Scroll through the sub menu items using the " " keys.
To go back to a higher level, press the "Escape" key.
Inputting a Value or Setting for a Service Program
Enter the required program mode as explained above. The setting appearing on the display is the
current setting.
Select the required setting using the " " keys, then press the "OK" key. The previous value remains if
the "OK" key is not pressed.
Exiting Service Mode
Select "End" from the service mode main menu, then press the "OK" key.
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