6
6
6-4
6-4
Troubleshooting > Test Print > How to check test print > Halftone (TYPE=5, 6, 11 to 14)
Troubleshooting > Test Print > How to check test print > Halftone (TYPE=5, 6, 11 to 14)
How to check test print
■
17-Gradation (TYPE=2, 3)
[1]
[2]
17-gradation can be used for check of gradation, fogging, white lines and uneven density at
front / rear.
Check item
How to check
Suspected cause
Gradation
Check if the density gradation is
shown in 16-step [1].
Fault in the drum unit (EOL)
Fault in the laser scanner unit
Fogging
Check the white area [2] only for
fogging.
Fault in the drum unit (EOL)
Fault in the laser scanner unit
White lines
Check the whole image for white
lines.
Fault in the developer
Uneven density
at front / rear
Check at front / rear for uneven
density.
Fault in the photosensitive drum (108 mm)
F-6-1
T-6-3
■
Halftone (TYPE=5, 6, 11 to 14)
Check item
How to check
Suspected cause
Transfer
fault
Check the whole image
for transfer fault.
Fault in the ITB (line, soil)
Fault in the primary transfer roller (line, soil)
Fault in the secondary transfer roller (line, soil)
Black lines Check the whole image
for black lines.
Lines on the photosensitive drum.
Soiled primary charge roller
White lines Check the whole image
for white lines.
Fault in the ITB unit.
Fault in the secondary transfer outer roller.
Fault in the laser beam exposure system.
Banding
Check the whole image
for banding.
Fault in the photosensitive drum (108 mm).
Fault in the developer upper-cylinder (32.3 mm) or lower-
cylinder (24.5 mm).
Uneven
density
Check the whole image
for uneven density.
Soiled dust-proof glass
Deteriorated ITB
F-6-2
T-6-4
Summary of Contents for imagePRESS 1110
Page 242: ...3 3 Periodical Service Periodical Service Periodical service item ...
Page 655: ...5 5 Adjustment Adjustment Overview When replacing parts Major adjustment ...
Page 944: ...8 8 Service Mode Service Mode Overview COPIER FEEDER SORTER BOARD Situation Mode ...
Page 1555: ... Service Tools General Circuit Diagram General Timing Chart Operator Maintenance Appendix ...