Chapter 15
15-3
15.2.4 16-Gradation (TYPE=4)
0014-3135
/ / / / iR C3380i / iR C3380 / iR C2880i / iR C2880
Use this test print to check gradation, fogging, white line, and uneven density at the front/rear.
- Gradation
If the 16-gradation[1] is not properly produced, suspect a fault in the drum unit or the laser exposure system.
- Fogging
If fogging is found only in the white area[2], suspect a fault in the drum unit or the laser exposure system.
- White Line
If a white line is found in the image, suspect a fault in the developing system.
- Uneven Density at the Front/Rear
If uneven density is found at the front/rear, suspect a fault in the drum unit, laser exposure system, or transfer system.
F-15-1
15.2.5 Full Page Halftone (TYPE=5)
0014-3136
/ / / / iR C3380i / iR C3380 / iR C2880i / iR C2880
Use this test print to check a transfer fault, black line, white line, and uneven density at specific intervals.
MEMO:
- You can print out test prints for individual colors by making the following selections in service mode: COPIER>TEST>PG and then COLOR-Y/M/C/K.
- You can also change the density of the test prints by making the following selections in service mode: TEST>PG>DENS>Y/M/C/K.
(1) Transfer Fault
If a transfer fault (white spot) occurs, suspect a fault in the ITB unit or the secondary transfer outside roller.
(2) Black Line
If a black line occurs, suspect a scratch in the photosensitive drum or dirt on the primary charging roller.
(3) White Line
If a white line occurs, suspect a fault in the ITB unit, secondary transfer outside roller, or laser exposure system.
(4) Uneven Density
If the density is uneven at specific intervals, suspect the following:
(a) photosensitive drum (if at 92.4 mm)
(b) developing cylinder (if at 42.7 mm)
(5) Uneven Density
If uneven density occurs, suspect dirt on the dust-blocking glass of the laser unit or deterioration of the ITB.
F-15-2
[1]
[2]
COLOR-M=1, COLOR-Y/C/K=0
Summary of Contents for iR C3380 series
Page 1: ...Aug 29 2006 Service Manual iR C3380 2880 Series...
Page 2: ......
Page 6: ......
Page 23: ...Chapter 1 Introduction...
Page 24: ......
Page 26: ......
Page 52: ......
Page 53: ...Chapter 2 Installation...
Page 54: ......
Page 127: ...Chapter 3 Basic Operation...
Page 128: ......
Page 130: ......
Page 136: ......
Page 137: ...Chapter 4 Main Controller...
Page 138: ......
Page 160: ......
Page 161: ...Chapter 5 Original Exposure System...
Page 162: ......
Page 188: ...Chapter 5 5 24 F 5 68 4 Remove the original sensor 2 hook 1 F 5 69...
Page 189: ...Chapter 6 Laser Exposure...
Page 190: ......
Page 192: ......
Page 206: ......
Page 207: ...Chapter 7 Image Formation...
Page 208: ......
Page 256: ......
Page 257: ...Chapter 8 Pickup Feeding System...
Page 258: ......
Page 262: ......
Page 303: ...Chapter 9 Fixing System...
Page 304: ......
Page 306: ......
Page 321: ...Chapter 10 Externals and Controls...
Page 322: ......
Page 326: ......
Page 336: ...Chapter 10 10 10 F 10 10 2 Remove the check mark from SNMP Status Enabled...
Page 337: ...Chapter 10 10 11 F 10 11...
Page 359: ...Chapter 11 MEAP...
Page 360: ......
Page 362: ......
Page 401: ...Chapter 12 RDS...
Page 402: ......
Page 404: ......
Page 411: ...Chapter 13 Maintenance and Inspection...
Page 412: ......
Page 414: ......
Page 416: ...Chapter 13 13 2 F 13 1 8 9 1 2 3 3 5 6 7 10 11 12 13 14 4...
Page 421: ...Chapter 14 Standards and Adjustments...
Page 422: ......
Page 424: ......
Page 431: ...Chapter 15 Correcting Faulty Images...
Page 432: ......
Page 434: ......
Page 459: ...Chapter 16 Self Diagnosis...
Page 460: ......
Page 462: ......
Page 481: ...Chapter 17 Service Mode...
Page 482: ......
Page 484: ......
Page 571: ...Chapter 18 Upgrading...
Page 572: ......
Page 574: ......
Page 603: ...Chapter 19 Service Tools...
Page 604: ......
Page 606: ......
Page 609: ...Aug 29 2006...
Page 610: ......