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5055-01x
926(K), 927(C), 928(Y), 929(M) - Toner Sensor Error
Questions /
Step
1
Is the toner cartridge
the correct type for
the printer?
2
Is the toner cartridge
encoder wheel dirty?
3
Replace the toner
cartridge for the
color with the error.
Did this fix the
problem?
4
Test the sensors.
While actuating the
sensor, does the
voltage fluctuate
between
0 V and +5 V
between pins 1 and
2 on connectors
CN22(K), CN21(Y),
CN18(M), and
CN19(C) on the
printer controller
board?
92x Service
Toner Sensor
Actions
Yes
Go to step 2.
Clean the encoder
wheel and toner
sensor.
Problem solved.
Replace the printer
controller board.
Diagnostic Information
No
Recommend the
customer replace
the cartridge with
the correct type.
Go to step 3.
Go to step 4.
Replace the
affected toner
sensor.
2-9
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