Konica Minolta magicolor 7450 Service Manual page 35

14.3.72 C063: Hold job error/No Tray 4 ................................................................. 209
14.3.73 C064: Hold job error/No Memory.............................................................. 209
14.3.74 C065: Hold job error/No Tray5 .................................................................. 209
14.3.75 FFFF: Interface Communication error....................................................... 209
15. Power supply trouble........................................................................................... 210
15.1 Machine is not Energized at All (PU1 Operation Check).................................. 210
15.2 Control panel indicators do not light. ................................................................ 211
15.3 Fusing Heaters do not Operate ........................................................................ 211
15.4 Power is not Supplied to Option ....................................................................... 212
15.4.1 Optional Lower Feeder Unit ...................................................................... 212
15.4.2 Power is not Supplied to Duplex Option.................................................... 212
16. Image quality problem......................................................................................... 213
16.1 How to read Element date ................................................................................ 213
16.2 How to identify problematic part ....................................................................... 214
16.2.1 Initial Check Items .................................................................................... 214
16.3 Solution ............................................................................................................ 215
16.3.1 Monocolor: white lines in Sub Scan Direction, white bands in Sub Scan
Direction, colored lines colored bands in Sub Scan Direction .................. 215
16.3.2 Monocolor: white lines in Main Scan Direction, white bands in Main Scan
Direction, colored lines in Main Scan Direction, colored bands in Main Scan
Direction.................................................................................................... 216
16.3.3 Monocolor: uneven density in sub scan direction ..................................... 217
16.3.4 Monocolor: uneven density in main scan direction ................................... 218
16.3.5 Monocolor: low image density .................................................................. 219
16.3.6 Monocolor: gradation reproduction failure ................................................ 221
16.3.7 Monocolor: foggy background................................................................... 222
16.3.8 Monocolor: void areas, white spots .......................................................... 223
16.3.9 Monocolor: colored spots ......................................................................... 224
16.3.10 Monocolor: blurred image ......................................................................... 225
16.3.11 Monocolor: blank print, black print ............................................................ 226
16.3.12 Monocolor: uneven image ........................................................................ 227
16.3.13 4-Color: white lines in sub scan direction, white bands in sub scan direction,
colored lines in sub scan direction, and colored bands in sub scan
direction .................................................................................................... 228
16.3.14 4-Color: white lines in main scan direction, white bands in main scan direc-
tion, colored lines in main scan direction, and colored bands in main scan
direction .................................................................................................... 229
16.3.15 4-Color: uneven density in sub scan direction .......................................... 230
16.3.16 4-Color: uneven density in main scan direction ........................................ 231
16.3.17 4-Color: low image density ....................................................................... 232
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Field Service Ver. 1.0 May 2006