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安全信息................................................................................................................................... 21

安全情報................................................................................................................................... 22

安全資訊................................................................................................................................... 22

Preface......................................................................................................... 23

Conventions........................................................................................................................................................23

General caution statements........................................................................................................................... 23

General information................................................................................... 25

Finding the serial number...............................................................................................................................25

Paper and specialty media guide................................................................................................................. 26

Paper guidelines..........................................................................................................................................................26

Using specialty media................................................................................................................................................ 27

Supported paper sizes, types, and weights......................................................................................................... 29

Data security notice...........................................................................................................................................31

Tools required for service.................................................................................................................................31

Diagnostic information.............................................................................. 33

Troubleshooting overview...............................................................................................................................33

Performing the initial troubleshooting check....................................................................................................... 33

Power‑on reset (POR) sequence............................................................................................................................. 33

Fixing print quality issues................................................................................................................................ 34

Initial print quality check............................................................................................................................................ 34

Toner easily rubs o check....................................................................................................................................... 34

Background or gray background check................................................................................................................ 36

Blank or white pages check ......................................................................................................................................37

Gapping or half color page check .......................................................................................................................... 39

Blurred print or color misalignment check ........................................................................................................... 40

Horizontal colored lines or banding check ........................................................................................................... 41

Text or images cut o check .................................................................................................................................... 43

Mottled print and dots check ................................................................................................................................... 43

Vertical white lines check.......................................................................................................................................... 44

Ghost images check................................................................................................................................................... 46

Solid color or black image check.............................................................................................................................47

Vertical colored lines or banding check................................................................................................................ 48

Image void scan direction check ............................................................................................................................ 49

Image void process direction check ....................................................................................................................... 51

Dark print check........................................................................................................................................................... 52

Missing color check .................................................................................................................................................... 53

Uneven print density check...................................................................................................................................... 54

Repeating defects check...........................................................................................................................................55

Random marks check................................................................................................................................................. 57

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