05/2014
3-3
DC SC2020
Image Quality Troubleshooting
3.1 Introduction
Version 1.1
3.1.1 Contents of Chapter 3
1. Chapter 3 Image Quality Troubleshooting is mainly composed of two sections: Test Pattern and
Image Quality Troubleshooting.
2. The Test Pattern section contains built-in test patterns of test charts for checking the quality of cop-
ied images.
3. The Image Quality Specification section contains "IOT/DC Alignment" and "Image Quality Specifica-
tion".
4. The Image Quality Troubleshooting section describes the causes of image quality failures and the
troubleshooting procedure for them.
5. It also describes the "Notes on Image Quality Restrictions".
3.1.2 Test Pattern
The following are the test patterns that are used.
1. The copy quality check mainly uses the Test Pattern (color A3) (499T 00276).
2. For copy quality check, J paper (Plain) is used.
3. The image built-in SUB of the test pattern is found in the following:
(1) Controller (ESS PWB)
4. For the Test Patterns, refer to the following.
• 6.4.11.1 Printing function test operation procedure
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