chapter 8
System diagram
7.3.7 Uneven pitch and jitter image ………………………………
7-145
7.3.8 Skewed image ………………………………………………
7-146
7.3.9 Low image density …………………………………………
7-147
7.3.10 Blank copy, Black copys …………………………………
7-154
7.3.11 Uneven density in sub scan direction ……………………
7-156
7.3.12 Uneven density in main scan direction …………………
7-157
7.3.13 Gradation reproduction failure ……………………………
7-158
7.3.14 Void areas, white spots …………………………………
7-160
7.3.15 Poor fusing performance, offset …………………………
7-161
7.3.16 Stain on the paper back side ……………………………
7-162
7.3.17 White Halo …………………………………………………
7-163
7.3.18 DADF skew testing ………………………………………
7-164
7.4 Other Errors ………………………………………………………
7-169
8.1 Engine 1 ……………………………………………………………
8-1
8.2 Engine 2 ……………………………………………………………
8-2
8.3 Main board & OPE ………………………………………………
8-3
8.4 Scan & DADF ……………………………………………………
8-4
8.5 Bottle joint board & side joint board ……………………………
8-5
8.6 DC control board & LSU joint board ……………………………
8-6
8.7 Cassette joint board & Drive joint board ………………………
8-7
8.8 Heater ……………………………………………………………
8-8
9.1 Entry Point …………………………………………………………
9-1
9.2 USB …………………………………………………………………
9-2
9.3 Network ……………………………………………………………
9-4
9.4 Confi rmation Page ………………………………………………
9-5
chapter 9
System Recovery
Contents