Canon imageRUNNER ADVANCE C255 Series, Service Manual, Page: 341 / 987

Secondary Transfer Outer Roller
Paper
ITB
Condition
When paper is left in a low humidity environment, the surface resistance of the paper increases and this symptom tends to occur.
Field Remedy
1. Check the correspondence table on the basis of the paper type for which this symptom occurs and whether it occurs on the
1st side or 2nd side, find the corresponding setting item in service mode > COPIER > ADJUST > HV-TR, and change the
setting value to "10".
Paper type Front side (1st side) Back side (2nd side)
Thin 2TR-TH-1 2TR-TH-2
Plain 1 2TR-N1-1 2TR-N1-2
Plain 2 2TR-N2-1 2TR-N2-2
Plain 3 2TR-N3-1 2TR-N3-2
Recycled 1 2TR-R1-1 2TR-R1-2
Recycled 2 2TR-R2-1 2TR-R2-2
Recycled 3 2TR-R3-1 2TR-R3-2
Heavy 1 2TR-H1-1 2TR-H1-2
Heavy 2/3 2TR-H2-1 2TR-H2-2
Heavy 4/5 2TR-H3-1 2TR-H3-2
Color 2TR-CP-1 2TR-CP-2
Transparency 2TR-O-1 -
Label 2TR-LA-1 -
Bond 2TR-B-1 2TR-B-2
Punch 2TR-PA-1 2TR-PA-2
Envelope 2TR-EN-1 2TR-EN-2
Postcard 2TR-P-1 2TR-P-2
The setting range is "-128" to "+127". Changing the setting value (default: 0) by "1" changes the secondary transfer voltage
by 30 V.
NOTE:
When the secondary transfer voltage is too high or when the paper type is changed, an image failure (white dots) in the high density
area may occur due to the high secondary transfer voltage.
2. Output the image where the symptom occurred, and check that the symptom does not occur.
If the symptom persists, increase the setting value in Remedy 1 up to "30" in increments of "10".
NOTE:
Improving the paper storage conditions may be effective in improving the issue.
Advise the customers to wrap unused or leftover paper in the paper packaging and keep it in a place away from direct sunlight.
6. Troubleshooting
330