Ricoh FT7770 Service Manual page 528

30
April, '89
I
Is the charge corona current correct?
Y N
Adjust the charge corona current.
Replace the developer.
Blank Area (Patchy Image)
1)
Is the paper wrinkled?
Y N
I
Adjust the transfer corona current.
Refer to "Wrinkled Copy Section".
Are the PTC, transfer, and separation corona wires improperly
installed?
Y N
Clean the PTC, transfer, and separation corona wires and
readjust the corona currents.
Clean and reset the wire(s).
13-4