Oki OKIOFFICE 84, Service Manual

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Table of Contents Page
....7.20 Document Skew 182
....7.21 Document Jam 183
....7.22 Printer Unit 184
........7.22.1 Precaution 185
........7.22.2 Troubleshooting Flow Charts of Printer Unit 186
............Troubleshooting flow chart 1: 187
............1: Top Cover is Open 188
............2: Replace Image Drum Message 189
............3: Engine Controller Error 190
............4: Fuser Unit Thermal Error 191
............5: Paper Jams 192
............6: No Paper Tray or No Paper 193
............Sample Image Problems (Figure 7.22.1) 194
............Action Items (Printer Unit-LCD Message) Table 7.22.2 195
............7: Light or Blurred Output 196
............8: Smeared Background on Output 197
............9: Blank Output 198
............10: Vertical Black Stripes on Output 199
............11: Evenly Spaced Marks on Output 200
............12: Missing Print on Output 201
............13: Vertical White Stripes on Output 202
............14: Poor Fusing 203
A Board Descriptions
Preface 204
Service Caution 205
A1.1 Unit Configuration and Block Diagram 206
....OKIOFFICE 84 Block Diagram Figure (A1.2.1) 207
....Block Diagram Abbreviations 208
A1.2 Function of Each Unit 209
....Main Control (R51) Board 210
....Operation Panel Unit: O4W board 211
....NCU Board 212
....Power Supply Unit 213
A2.1 Signal Flow Explanation 214
....Copy Mode 215
....Copy Picture Signal (Figure A2.1) 216
....G3 Send Mode 217
....G3 Send Picture Signal (Figure A2.2) 218
....G3 Receive Mode 219
....G3 Receive Picture Signal (Figure A2.3) 220
....300 bps Send Mode 221
....300 bps Send Signal (Figure A2.4) 222
....300 bps Receive Mode 223
....300 bps Receive Signal (Figure A2.5) 224
....Report Printing 225
....Report Print Signal (Figure A2.6) 226
....Memory Transmission 227
....Memory Reception 228
....A3.1.1 R51 Circuit Diagram (Page 1/12) 229
....A3.1.2 R51 Circuit Diagram (Page 2/12) 230
....A3.1.3 R51 Circuit Diagram (Page 3/12) 231