20.1 Solution ............................................................................................................ 149
20.1.1
20.1.2
20.1.3
Uneven density in FD................................................................................ 151
20.1.4
Uneven density in CD ............................................................................... 152
20.1.5
Low image density .................................................................................... 153
20.1.6
20.1.7
Foggy background .................................................................................... 155
20.1.8
20.1.9
20.1.10 Colored spots............................................................................................ 158
20.1.11 Blurred image ........................................................................................... 159
20.1.16 Back marking ............................................................................................ 164
20.1.17 Uneven pitch ............................................................................................. 165
21.
Parts layout drawing............................................................................................ 167
21.1 Main Unit .......................................................................................................... 167
22.
23.
Timing chart ........................................................................................................ 173
viii