Kyocera KM-1650 Service Manual page 97

2DA/2DB-1
Maintenance
item No.
Setting the other high voltages
U101
Description
Changes the developing bias voltage and transfer/separation voltage.
Purpose
To check the developing bias and the transfer/separation voltage or to take measures against drop of image
density or background fog.
Method
1. Press the start key. The screen for selecting an item is displayed.
2. Select the item to be set using the up/down cursor keys.
3. Press the start key. The screen for executing each item is displayed.
Display
DEV
TC
SC
Setting the developing bias
1. Select the item to be set using the up/down cursor keys.
2. Change the setting using the left/right cursor keys.
Display
BIAS C
DUTY C
BIAS P
DUTY P
Increasing the BIAS C/P setting makes the image lighter; decreasing it makes the image darker.
Increasing the DUTY C/P setting makes the image lighter; decreasing it makes the image darker.
3. Press the start key. The value is set.
Setting the transfer voltage
1. Select the item to be set using the up/down cursor keys.
2. Change the setting using the left/right cursor keys.
Display
TC DATA1
TC DATA2
OFF TIMING
ON TIMING
3. Press the start key. The value is set.
Setting the separation voltage
1. Select the item to be set using the up/down cursor keys.
2. Change the setting using the left/right cursor keys.
Display
SC SEL
SC ON TIMING
SC OFF TIMING
3. Press the start key. The value is set.
Interrupt copy mode
While this maintenance item is being performed, copying from an original can be made in interrupt copy
mode.
1. Press the interrupt key. The machine enters the interrupt copy mode.
2. Set the original and press the strat key.
To return to the screen for setting, press the interrupt key.
Completion
Press the stop/clear key at the screen for selecting an item. The screen for maintenance item No. is dis-
played.
1-4-28
Description
Setting the developing bias
Setting the transfer voltage
Setting the separation voltage
Description
Developing bias clock frequency (copier mode)
Developing bias clock duty (copier mode)
Developing bias clock frequency (printer mode)
Developing bias clock duty (printer mode)
Description
Transfer control voltage (large size)
Transfer control voltage (small size)
Transfer charging output OFF timing
Transfer charging output ON timing
Description
Separation control voltage
Separation charging output ON timing
Separation charging output OFF timing
Description
Setting range
2 to 255
1 to 99
2 to 255
1 to 99
Setting range
0 to 255
0 to 255
0 to 255
0 to 255
Setting range
0 to 2
0 to 255
0 to 255
Initial setting
27
45
22
45
Initial setting
166
177
37
35
Initial setting
1
35
42