Ricoh Aficio MP171 Field Service Manual page 12

6. Troubleshooting
Self-Diagnostic Mode................................................................................................................................... 119
Self-Diagnostic Mode at Power On.........................................................................................................119
Service Call.................................................................................................................................................... 120
Summary.................................................................................................................................................... 120
When a Level "D" SC code occurs.................................................................................................120
SC200 (LED Optics)................................................................................................................................. 121
SC300 (Image Processing - 1)............................................................................................................... 123
SC400 (Image Processing - 2)............................................................................................................... 124
SC500 (Paper Feed and Fusing)............................................................................................................. 125
SC600 (Device Communication).............................................................................................................133
SC700 (Peripherals)................................................................................................................................. 138
SC800 (Controller)................................................................................................................................... 138
SC900 (Others).........................................................................................................................................142
Jam Detection.................................................................................................................................................146
Jam Displays.............................................................................................................................................. 146
Sensor Position Layout.............................................................................................................................. 147
Jam Codes and Position Codes................................................................................................................147
Main Machine.................................................................................................................................. 148
Optional Bank...................................................................................................................................148
Troubleshooting............................................................................................................................................. 150
Test Sheet Printing......................................................................................................................................150
Image Position Adjustment........................................................................................................................150
Registration Adjustment.............................................................................................................................151
Print Area...........................................................................................................................................151
Adjustment Reference Values...........................................................................................................152
Adjustment Procedure.......................................................................................................................152
Problem at Regular Intervals.....................................................................................................................152
When Vertical Banding is Generated.............................................................................................154
When Black Spots are Generated on Print Image.........................................................................154
Paper Feed (Skew)....................................................................................................................................155
Recycled or Thin Paper Is Severely Curled after Printing....................................................................... 156
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