Lexmark C910 - Page 126

2-10 Service Manual
5055-01X
926(K), 927(C), 928(Y), 929(M) - Toner Sensor Error
92x Service
Toner Sensor
Step
Questions /
Actions
Yes No
1 Is the toner cartridge
the correct type for
the printer?
Go to step 2. Recommend the
customer replace
the cartridge with
the correct type.
2 Is the toner cartridge
encoder wheel dirty?
Clean the encoder
wheel and toner
sensor.
Go to step 3.
3 Replace the toner
cartridge for the
color with the error.
Did this fix the
problem?
Problem solved. Go to step 4.
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?
Replace the printer
controller board.
Replace the
affected toner
sensor.