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2BH/J
Maintenance
item No.
U150
Checking sensors and switches for toner
Description
Displays the on-off status of each sensor or switch related to toner.
Purpose
To check if the sensors and switches operate correctly.
Method
1. Press the start key. A list of the switches, the on-off status of which can be checked, are displayed.
2. Turn each switch on and off manually to check the status.
When the on-status of a switch is detected, that switch is displayed in reverse.
Display
DEVELOPER SENSOR
CONTAINER SET
CONTAINER SENSOR
DISPOSAL TANK SET
DISPOSAL TANK SENSOR
Completion
Press the stop/clear key. The screen for selecting a maintenance item No. is displayed.
U157
Checking/clearing the developing drive time
Description
Displays the developing drive time for checking, clearing or changing a figure, which is used as a reference
when correcting the toner control. It is automatically cleared when U130 is executed.
Purpose
To check the developing drive time after replacing the developing unit.
Method
Press the start key. The developing drive time is displayed in minutes.
Clearing
1. Press the reset key.
2. Press the start key. The time is cleared, and the screen for selecting a maintenance item No. is displayed.
Setting
1. Enter a five-digit drive time (in minutes) using the numeric keys.
2. Press the start key. The time is set, and the screen for selecting a maintenance item No. is displayed.
Completion
To exit this maintenance item without changing the time, press the stop/clear key. The screen for selecting a
maintenance item No. is displayed.
1-4-28
Description
Switches
Toner sensor (TNS)
Toner container detection switch (TCDSW)
Toner container sensor (TCS)
Toner disposal tank detection switch (TDDSW)
Overflow sensor (OFS)
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