Alignment and Troubleshooting
4-31
4.1.4.4 Periodic Defective Image
If an image defects appears at regular intervals on the printed-paper, it is due to a faulty or damaged roller.
Refer to the table below and check the condition of the appropriate roller.
No
Roller
Period
Phenomenon
1
OPC Drum
75.4mm
White and Black Spots
2
Charge Roller
26.7mm
White/Black Spot and Periodic Band
3
Supply Roller
40.8~41mm
Periodic Band (by little difference of density)
4
Developing Roller
30.6mm (YMC)
White Spot, Horizontal black band
32.5mm(K)
5
Transfer Roller
43.9mm
Periodic Band (by little difference of density)
6
39.0mm
Periodic Band
Gap-ring
7
127.0mm
White/Black Spot
Fusing Belt
Summary of Contents for 2145cn
Page 1: ... 6HUYLFH 0DQXDO 10 Mar 2009 ...
Page 6: ......
Page 64: ...Disassembly and Reassembly 3 17 3 3 15 Pick up roller 1 Remove the Pick up roller ...
Page 81: ...Alignment and Troubleshooting 4 17 2 3 1 4 ...
Page 151: ...5 11 5 4 MP Tray 0 1 5 6 7 2 3 4 8 Exploded View and Parts list ...
Page 155: ...5 15 5 6 Reverse Unit 0 2 1 3 4 5 Exploded View and Parts list ...
Page 157: ...5 17 5 7 Top Cover 0 1 7 5 6 5 6 11 11 2 4 3 2 4 3 9 9 10 Exploded View and Parts list ...
Page 161: ...5 21 5 9 Reverse Drive 0 1 11 2 3 4 4 4 4 4 5 6 7 8 9 10 Exploded View and Parts list ...
Page 165: ...5 25 5 11 Feed Drive 0 6 5 1 2 3 4 Exploded View and Parts list ...