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[hemai2005]

can any body help me to solving this problem in iR3570
i know that is problem in toner sensor but wt can i do replace sensor or developing?i don know>>>

[SCREWTAPE]

There are two of these sensors, one is on the developing assy and one on the sub hopper assy. Both have the same parts # Toner Sensor FK2-0358-000.
You can either, replace sensors or developer.

[Alan Aya]

can any body help me to solving this problem in iR3570
i know that is problem in toner sensor but wt can i do replace sensor or developing?i don know>>>

Screwtape is right, replace the developing assembly toner will solve the problem.
You can also check the sensor in the I/O display mode:
TS1 developing assembly toner sensor, P021> Bit 2 (1= toner remaining, 0= toner empty)
TS2 sub hopper toner sensor, P030> Bit 3 (1= Got toner, 0= no toner)

[hemai2005]

thank you SCREWTAPE ,Alan
i will replace the developing ass, this is correct