Toshiba e-STUDIO 2555C Service Manual page 760

[C3A0] Auto-toner sensor-M abnormality (upper limit)
Classification
Copy process related service call
Step Check Item
Developer unit
1
Auto toner sensor
Harness
LGC board
2
Replacement part
Auto toner sensor
Harness
LGC board
Developer material
e-STUDIO2555C/3055C/3555C/4555C/5055C
ERROR CODE AND TROUBLESHOOTING
Auto-toner sensor-M abnormality (upper limit)
Result
• Check if the developer unit is
installed properly.
• Check that the developer unit and
coupling on the equipment side are
properly engaged.
• Check that the mixer of the
developer unit is rotated.
• Check if the developer material is
too dark visually.
• Check if the amount of the
developer material is too large or
too small.
• Remove any toner or dust on the
ATC sensor connector and the
drawer connector of the process
cover.
• Remove any toner or dust on the
EPU sensor connector and the
drawer connector on the equipment
side.
• Check the connectors and
harnesses between the auto toner
sensor and LGC board (CN364).
• Check if there is any foreign matter
such as toner in the connector of
the auto toner sensor. Remove if
there is and reconnect it.
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