Oki OKIOFFICE 84 Service Manual page 6

Table of Contents
....7.20 Document Skew
....7.21 Document Jam
....7.22 Printer Unit
........7.22.1 Precaution
........7.22.2 Troubleshooting Flow Charts of Printer Unit
............Troubleshooting flow chart 1:
............1: Top Cover is Open
............2: Replace Image Drum Message
............3: Engine Controller Error
............4: Fuser Unit Thermal Error
............5: Paper Jams
............6: No Paper Tray or No Paper
............Sample Image Problems (Figure 7.22.1)
............Action Items (Printer Unit-LCD Message) Table 7.22.2
............7: Light or Blurred Output
............8: Smeared Background on Output
............9: Blank Output
............10: Vertical Black Stripes on Output
............11: Evenly Spaced Marks on Output
............12: Missing Print on Output
............13: Vertical White Stripes on Output
............14: Poor Fusing
A Board Descriptions
Preface
Service Caution
A1.1 Unit Configuration and Block Diagram
....OKIOFFICE 84 Block Diagram Figure (A1.2.1)
....Block Diagram Abbreviations
A1.2 Function of Each Unit
....Main Control (R51) Board
....Operation Panel Unit: O4W board
....NCU Board
....Power Supply Unit
A2.1 Signal Flow Explanation
....Copy Mode
....Copy Picture Signal (Figure A2.1)
....G3 Send Mode
....G3 Send Picture Signal (Figure A2.2)
....G3 Receive Mode
....G3 Receive Picture Signal (Figure A2.3)
....300 bps Send Mode
....300 bps Send Signal (Figure A2.4)
....300 bps Receive Mode
....300 bps Receive Signal (Figure A2.5)
....Report Printing
....Report Print Signal (Figure A2.6)
....Memory Transmission
....Memory Reception
....A3.1.1 R51 Circuit Diagram (Page 1/12)
....A3.1.2 R51 Circuit Diagram (Page 2/12)
....A3.1.3 R51 Circuit Diagram (Page 3/12)
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