Kyocera KM-4230 Service Manual page 238

Maintenance
item No.
3 To change the output conditions for MONO-LEVEL, change the setting
U089
using The Up/Down keys.
Description
Output conditions
for MONO-LEVEL
Increasing the setting makes the density higher, and decreasing it
makes the density lower. Entirely white paper is output when the setting
is 0, and entirely black paper is output when it is 255.
4 Press the interrupt key. The screen for copy mode is displayed.
5 Press the print key. A PG pattern is output.
Completion
Press the stop/clear key at the screen for selecting an item. The screen for
selecting a maintenance item No. is displayed.
Description
Setting range
0 to 255
Initial setting
0
3-2-29
2A3/4