g. Check the Clearance of Ink roller and pressure roller
2. Too light / dark on the copies even several sheets test printed.
b. Change the scan density : lighter / darker
Change the master-making density: B4: 1 lighter---9 darker A3: light / darker
a. Change a light / dark original on the scan table.
c. Check the surface of the drum (cylinder) ,correct the ink installation .
e. If the ink pump motor is workable :
d. Check the ink pump pipe: Enter test mode, test the ink pump motor.
Neither there is ink on the surface, nor ink pump motor work, check the mental screen
and the cloth screen if it is jam.
f. Check the ink detect sensor: if it is dirty by the ink .If so, clean the sensor(send and receive).
Loosen the hexagonal screw(downward)
adjust the upward screw, then fix the hexagonal
Counter Clockwise : Ink supply more
screw.
Clock wise : Ink supply less
Solution:
Lower the position of Ink detect sensor (send &receive)
Too many ink inside the drum:
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