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Diagnostic Information 2-97
5016-001
Toner Low/Empty Sensor Service Check
Note: Check the print darkness menu setting before checking the
toner sensor. This service check is intended to be used when a 929
service error displays.
FRU Action
1 Developer Drive
Assembly
Incorrect operation of the developer drive
assembly can cause the printer to display a 929
error code. Check the developer drive assembly
for correct installation, signs of wear, or loose or
broken parts.
2 Toner Sensor
Cable
Be sure the toner sensor assembly cable is
properly seated into the toner sensor.
• If correct at both the sensor and engine board
(J10), check the continuity of the cable.
• If incorrect, replace the cable.
3 Toner Sensor The toner sensor cable is part of the front harness
and part of connector J10 on the engine board.
Check the voltage at J1-011. It should read
approximately + 5 V dc.
• If incorrect, replace the engine board.
• If correct, check the voltage at J10-12. It should
read approximately +5 V dc with the controller
board removed from the printer.
• If incorrect, replace the engine board.
• If correct, replace the toner sensor assembly.
A bad ground connection between J10-13 on the
engine board and pin 3 on the toner sensor results
in a 929 service error.