Canon imageRUNNER ADVANCE C3330 Series, Service Manual

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COPIER (Service mode for copier) > DISPLAY (State display mode) > DENS
DENS-Y-H 2 Dspl Y-clr TD ratio diff log: ATR ctrl
Detail To display the latest 8 logs in which deviations (%) of Y-color toner density (TD ratio) detected by
the ATR Sensor at ATR control from the target value are shown.
Sharp change in values may indicate ATR Sensor disconnection/failure, whereas gradual change
in values may indicate failure in toner supply system.
Use Case When checking the toner density in the Developing Unit at low density or fogging deterioration
Display/Adj/Set Range -700 to 700
Unit %
Appropriate Target Value -300 - 300
Amount of Change per
Unit
0.01
DENS-M-H 2 Dspl M-clr TD ratio diff log: ATR ctrl
Detail To display the latest 8 logs in which deviations (%) of M-color toner density (TD ratio) detected by
the ATR Sensor at ATR control from the target value are shown.
Sharp change in values may indicate ATR Sensor disconnection/failure, whereas gradual change
in values may indicate failure in toner supply system.
Use Case When checking the toner density in the Developing Unit at low density or fogging deterioration
Display/Adj/Set Range -700 to 700
Unit %
Appropriate Target Value -300 - 300
Amount of Change per
Unit
0.01
DENS-C-H 2 Dspl C-clr TD ratio diff log: ATR ctrl
Detail To display the latest 8 logs in which deviations (%) of C-color toner density (TD ratio) detected by
the ATR Sensor at ATR control from the target value are shown.
Sharp change in values may indicate ATR Sensor disconnection/failure, whereas gradual change
in values may indicate failure in toner supply system.
Use Case
When checking the toner density in the Developing Unit at low density or fogging deterioration
Display/Adj/Set Range
-700 to 700
Unit
%
Appropriate Target Value
-300 - 300
Amount of Change per
Unit
0.01
DS-S-Y-H 2 Dspl of Y-color patch image density log
Detail To display the latest 8 Y-color patch image density log data.
It is the reference for judging the cause at E020 occurrence, etc.
Sharp change in values may indicate the failure in the Registration Patch Sensor Unit (Rear),
shutter or laser, whereas gradual change may indicate failure in toner supply system.
This is particularly caused by the Registration Patch Sensor Unit (Rear).
Use Case When analyzing the cause of E020
Display/Adj/Set Range 0 to 1023
Appropriate Target Value 100 - 600
DS-S-M-H 2 Dspl of M-color patch image density log
Detail To display the latest 8 M-color patch image density log data.
It is the reference for judging the cause at E020 occurrence, etc.
Sharp change in values may indicate the failure in the Registration Patch Sensor Unit (Rear),
shutter or laser, whereas gradual change may indicate failure in toner supply system.
This is particularly caused by the Registration Patch Sensor Unit (Rear).
Use Case
When analyzing the cause of E020
Display/Adj/Set Range
0 to 1023
Appropriate Target Value 100 - 600
8. Service Mode
699