Service manual

2DA/2DB-1
1-4-27
Maintenance
Description
item No.
U100 Setting the main high voltage
Description
Changes the surface potential by changing the grid control voltage. Also performs main charging. Also
changes the setting of main charging copy quantity correction.
Purpose
To set the surface potential or check main charging. Also used when reentering data after initializing the set
data.
Start
1. Press the start key. The screen for selecting an item is displayed.
2. Select the item using the up/down cursor keys.
Display Description
MC DATA Changing the grid control voltage
MC ON Turning the main charger on
LASER ON/OFF Turning the main charger on and the laser scanner unit on and off
INTERVAL Main charging copy quantity correction, copy interval
COPY CNT Main charging copy quantity correction, copy quantity
MC ADJUST Main charging copy quantity correction, correction amount
Method for main charger output
1. Press the start key. The selected operation starts.
2. To stop operation, press the stop/clear key.
Setting the grid control voltage
1. Change the setting using the left/right cursor keys.
Description Setting range Initial setting
Grid control voltage 0 to 255 132
Increasing the setting makes the surface potential higher, and decreasing it makes the potential lower.
2. Press the start key. The value is set.
Setting the main charging copy quantity correction
1. Change the setting using the left/right cursor keys.
Display Setting Setting range Initial setting
INTERVAL Copy interval 1 to 255 (minute) 60
COPY CNT Copy quantity 1 to 255 (10 sheets) 50
MC ADJUST Correction amount 0 to 50 (bit) 10
Copy interval: Sets the time interval from the previous copying. If the time from the previous copying
exceeds this preset value, the copy quantity counter will be reset.
Copy quantity: Sets the copy quantity from which copy quantity correction starts. When the copy quantity
counter reaches this preset value, correction will start.
Correction amount: Sets the correction amount for copy quantity correction.
Set the values in the range from 5 to 120 minutes for copy interval, from 10 to 2,000 sheets for copy
quantity, and from 5 to 50 bits for correction amount.
2. Press the start key. The value is set.
Completion
Press the stop/clear key when main charger output stops while a selection item is displayed. The indication for
selecting a maintenance item No. appears.