Ricoh FT7770 Service Manual page 530

30 April, '89
Unfused Copy
1) Image can be easily rubbed
off. Sorter jams may
occur.
If Service Call
Section.
Is the fusing
Ready: 178°C
Fusing Lamp ON: 182°C
OFF: 185°C
Y N
Readjust the fusing temperature.
Clean the thermistor surface before adjusting.
Check and adjust the nip band width (8.5 ± 0.8 mm at the ends).
Note: Use A3 or 11" x 17" paper for this measurement.
1) White band across copies
Does the copy have a crease mark where the white band appears?
Y N
I
o Clean the transfer unit (wire, end blocks, and casing).
o Check and replace any defective parts that cause the
transfer corona to leak.
Check the paper transport mechanism from paper feed through
transfer; correct any faults.
Condition 6 lights, refer to the Service Call
temperature correct?
13-6