Kyocera TASKalfa 1800 Service Manual page 245

Defective part
Transfer roller unit
4
High voltage PWB
5
Main/Engine PWB
6
Check description
1. Check if the roller is
bleached on its surface.
2. Check the value of U140
MagDC after conducting cali-
bration.
3. Check if the ground tab of
the transfer roller unit is
deformed.
The developing bias and charg-
ing current supplied by the high
voltage PWB is faulty.
The main/engine PWB is detec-
tive.
1. If the connecting terminals are deformed,
correct for a proper conduction.
2. Increase the U140 MagDC value if the
U140 MagDC value has not reached at its
maximum even though the roller is
bleached on its surface.
3. If the MagDC increased to its maximum
won't cure, replace the transfer roller unit.
(see page 1-5-44)
Replace the high voltage PWB.
(see page 2-2-18)
Replace the main/engine PWB.(see page 2-2-
11)
1-4-73
2NC/2NF/2NG/2NN/3P7/3P8/3P9
Corrective Action