User Guide

7 Troubleshooting
This chapter provides information about the following topics.
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Basic troubleshooting
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Control-panel messages
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Solving image-quality problems
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Solving scanning (copying) image-quality problems
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Repetitive image defect ruler
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Solving paper-feed problems
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Functional checks
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Firmware update using a flash executable file
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Troubleshooting tools
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Service-mode functions
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Main wiring
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Component locations
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