Olivetti d-Copia 2500MF, Руководство по обслуживанию

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2H0/2HZ
1-3-42
U101
Setting the other high voltages
Description
Sets the developing bias control voltage, the transfer control voltage and the separation control voltage or
checks the output of these voltages. Sets the transfer control voltage and the separation control voltage ON/
OFF timing.
Purpose
To check the developing bias, the transfer voltage and the separation voltage or to take measures against
drop of image density or background fog.
Setting
1. Press the start key.
2. Select the item to be set.
3. Change the setting using the +/- keys.
Increasing the DEV BIAS setting makes the image darker; decreasing it makes the image lighter.
Increasing the DEV SBIAS setting makes the image darker.
Increasing the DEV DUTY setting makes the image lighter; decreasing it makes the image darker.
Increasing the TC DATA/TC DATA2 setting makes the transfer voltage higher, and decreasing it makes
the voltage lower.
Increasing the SC DATA setting makes the separation voltage higher, and decreasing it makes the volt-
age lower.
4. Press the start key. The value is set.
Completion
Press the stop key. The screen for selecting a maintenance item No. is displayed.
U110
Checking the drum count
Description
Displays the drum counts for checking.
Purpose
To check the drum status.
Method
Press the start key. The drum counter count is displayed.
Completion
Press the stop key. The screen for selecting a maintenance item No. is displayed.
Maintenance
item No.
Description
Display Description Setting
range Initial
setting
DEV BIAS Developing bias AC component frequency at image
formation 20 to 32 26
DEV SBIAS Developing shift bias potential at image formation 0 to 255 58
DEV DUTY Developing bias AC component duty at image forma-
tion 0 to 100 50
TC DATA Transfer control voltage 0 to 255 89
SC DATA Separation control voltage 0 to 2 1
TC DATA2 Transfer control voltage for small sizes 0 to 255 115
TC ON Time of period since the registration clutch is turned
on until the transfer voltage is turned on 0 to 255 91
TC OFF Time of period since the registration clutch is turned
off until the transfer voltage is turned off 0 to 255 68
SC ON Time of period since the registration clutch is turned
on until the separation voltage is turned on 0 to 255 40
SC OFF Time of period since the registration clutch is turned
off until the separation voltage is turned off 0 to 255 92
Service Manual Y108620-5