Brother HL-2700CN Service Manual page 130

Note:
•
Since the sensors respond only when the cover is closed, be sure to close the cover
before re-installing any items.
•
The sensors tests, especially the OPC test, require time to respond on the LCD
panel. Operate a sensor in one sense for at least 20 seconds before restoring it to
the original condition for reliable operation of these tests.
•
As for HL-2700CN, Lower Tray does not have the media sensor, so the display will
not be changed to 'Q'. (The display will stay . )
V-5