Brother MFC-7240 - Scanning Image Defect Troubleshooting; Image Defect Examples; Troubleshooting According to Scanning Image Defect

2-78
Confidential
3.9 Scanning Image Defect Troubleshooting
3.9.1 Image defect examples
Fig. 2-13
3.9.2 Troubleshooting according to scanning image defect
 Light
<User Check>
- Check that the setting of the contrast does not become light.
- Clean the CIS glass.
Step Cause Remedy
1
Incorrect white level data Perform the acquisition of white level data.
(Function code 55)
2 CIS unit failure Replace the CIS unit.
3 Main PCB failure Replace the main PCB ASSY.
Dark or bluish white
(2-79)
Light (2-78) Faulty registration (2-79)
White vertical
streak (2-80)
Completely blank
(2-80)
Vertical streaks (2-80)