Ricoh M281 Series Service Manual page 549

Rev 03/08/2017
MP 601/SP 5310
Transfer Current
Paper Type
A4
1. When the scattered toner prevention function is disabled.
Thin Paper -60
Plain Paper 1 -15
Plain Paper 2
Middle Thick
Thick Paper 1 -110
Thick Paper 2 -110
Thick Paper 3 -110
2. When the scattered toner prevention function is enabled.
Plain Paper 1 50
Plain Paper 2 50
Middle Thick 50
Black or White spots repeat at 30mm or 96mm intervals
Symptom

White spots / Black spots appear on the printouts in 96mm pitch.

Black spots appear on the printouts in 30mm pitch.
Cause
Adhesives contained in label paper adhere to the drum, and then to the charge roller.
Solution
1. Set A4 (or LT) paper on the bypass tray and execute "Drum Refresh" mode.
MP 501: [User Tools] > [Machine Features] > [Maintenance] > [Drum Refresh]
SP 5300: [Menu] > [Quality Maintenance] > [Drum Refresh]
2. Remove the charge roller unit and clean the surface of the roller with dry cloth.
SM
Fusing Temperature
[µA]
LT A4
-60 -20
-15 -5
0 0 0
0 0 25
-110 0
-110 5
-110 15
50 -5
50 0
50 25
6-111
Troubleshooting Guide
Copy/Print Speed
[°C] [ppm]
LT A4
-20 60
-5 60
0 60
25 60
0 38
5 38
15 38
-5 60
0 60
25 60
D255/D256/M281/M282
LT
62
62
62
62
38
38
38
62
62
62