Question about Canon imageRUNNER 2520 Laser Multifunction Printer
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Posted on Jan 02, 2017
The path between the sub hopper and the developing
assembly is clogged with toner.
1.Check the rotation of hopper motor gear. (If rotating, false
detection by the sensor is doubted. Feed the toner to the
developing unit in service mode: CLEAR>ENGIN>TNRINST.)
2.Replace the Developing Assembly Toner Sensor (TS1).
3.Replace the Sub Hopper Toner Sensor (TS2).
4.Replace the DC Controller PCB (PCB4).
* 28 * or MENU and #
Posted on Jul 01, 2010
u can go in service mode by pressing additional function + 2+8 then go in clear by pressing scrolling, then go in engine. after press ok in tnrinst. machine will process for 2 minutes. for toner installation.
Posted on May 09, 2011
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