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................................................................................................................................32
Diagnostic information.............................................................................. 35
Troubleshooting overview.............................................................................................................................. 35
Performing the initial troubleshooting check....................................................................................................... 35
Power‑on reset (POR) sequence............................................................................................................................. 35
Fixing print quality issues................................................................................................................................36
Initial print quality check............................................................................................................................................ 36
Toner easily rubs o check....................................................................................................................................... 36
Background or gray background check................................................................................................................ 38
Blank or white pages check ..................................................................................................................................... 39
Gapping or half color page check ........................................................................................................................... 41
Blurred print or color misalignment check ........................................................................................................... 42
Horizontal colored lines or banding check .......................................................................................................... 43
Text or images cut o check .................................................................................................................................... 45
Mottled print and dots check ................................................................................................................................... 45
Vertical white lines check.......................................................................................................................................... 46
Ghost images check................................................................................................................................................... 48
Solid color or black image check............................................................................................................................ 49
Vertical colored lines or banding check................................................................................................................50
Image void scan direction check ............................................................................................................................. 51
Image void process direction check ...................................................................................................................... 53
Dark print check........................................................................................................................................................... 54
Missing color check ....................................................................................................................................................55
Uneven print density check......................................................................................................................................56
Repeating defects check........................................................................................................................................... 57
Random marks check................................................................................................................................................. 59
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