(1) Engine board ........................................................................................................................... 6-28
6-1-6 Print quality problems .............................................................................................................. 6-35
(2) All-black printout ...................................................................................................................... 6-37
(3) Dropouts .................................................................................................................................. 6-38
(4) Black dots ................................................................................................................................ 6-39
(5) Black horizontal streaks ........................................................................................................... 6-39
(6) Black vertical streaks ............................................................................................................... 6-40
(7) Unsharpness ........................................................................................................................... 6-41
(8) Gray background ..................................................................................................................... 6-42
Repetitive defects gauge ............................................................................................................... 6-45
6-1-7 Correcting a paper jam ............................................................................................................ 6-46
(1) Jam in the rear cover ............................................................................................................... 6-46
(2) Jam inside the printer .............................................................................................................. 6-47