Figures
Figure 1. Front and side view.......................................16
Figure 2. Back and side view........................................17
Figure 3. Model and serial number labels..............................22
Figure 4. Dimensions of product.....................................30
Figure 5. Fax controls.............................................31
Figure 6. Alphanumeric controls.....................................33
Figure 7. Menu and cancel buttons...................................34
Figure 8. Copy, scan, and start controls...............................34
Figure 9. Output bin and straight-through output path.....................54
Figure 10. Product configuration......................................75
Figure 11. Optical diagram of scanner..................................80
Figure 12. Document scanner path ...................................82
Figure 13. Printer unit functional block diagram..........................84
Figure 14. ECU loads..............................................86
Figure 15. Overview of laser/scanner operation..........................87
Figure 16. High-voltage power supply circuit.............................90
Figure 17. Image formation block diagram..............................91
Figure 18. Printer paper path.........................................95
Figure 19. Solenoid, photosensors, and switches.........................97
Figure 20. Printer timing diagram ....................................99
Figure 21. Removing the print cartridge...............................110
Figure 22. Removing the right side cover (1 of 3)........................113
Figure 23. Removing the right side cover (2 of 3)........................114
Figure 24. Removing the right side cover (3 of 3)........................115
Figure 25. Removing the right scanner cover...........................115
Figure 26. Removing the left scanner cover............................116
Figure 27. Separating the scanner from the printer (1 of 4).................116
Figure 28. Separating the scanner from the printer (2 of 4).................117
Figure 29. Separating the scanner from the printer (3 of 4).................117
Figure 30. Separating the scanner from the printer (4 of 4).................118
Figure 31. Removing the ADF assembly...............................119
Figure 32. Removing the document feed guide (1 of 2)...................122
Figure 33. Removing the document feed guide (2 of 2)...................122
Figure 34. Removing the ADF separation pad..........................123
Figure 35. Removing the control panel bezel...........................124
Figure 36. Reinstalling the control panel bezel (1 of 2)....................124
Figure 37. Reinstalling the control panel bezel (2 of 2)....................124
Figure 38. Removing the control panel................................125
Figure 39. Removing the control panel chassis (1 of 2)...................126
Figure 40. Removing the control panel chassis (2 of 2)...................126
Figure 41. Removing the scanner formatter............................127
Figure 42. Removing the ADF scanner glass...........................128
Figure 43. Installing the ADF scanner glass............................128
Figure 44. Removing the left side door................................129
Figure 45. Removing the back cover (1 of 2)............................130
Figure 46. Removing the back cover (2 of 2)............................131
Figure 47. Removing the printer top cover.............................132
Figure 48. Removing the print cartridge door (1 of 2).....................133
Figure 49. Removing the print cartridge door (2 of 2).....................134
Figure 50. Removing the front cover (1 of 2)............................135
Figure 51. Front cover removed.....................................135
Figure 52. Removing the front cover (2 of 2)............................136
Figure 53. Removing the front guide assembly (1 of 3)....................137
Figure 54. Removing the front guide assembly (2 of 3)....................138
Figure 55. Removing the front guide assembly (3 of 3)....................138
Figure 56. Removing the left and right support covers....................139
Figure 57. Removing the transfer roller................................140
Figure 58. Removing the LIU........................................141
Figure 59. Removing the formatter (1 of 3).............................142
Figure 60. Removing the formatter (2 of 3).............................143
Figure 61. Removing the formatter (3 of 3).............................143
Figure 62. Removing the fuser assembly (1 of 4)........................144
Figure 63. Removing the fuser assembly (2 of 4)........................145
Figure 64. Removing the fuser assembly (3 of 4)........................146
Figure 65. Removing the fuser assembly (4 of 4)........................147
Figure 66. Removing the output rollers (1 of 2)..........................148
Figure 67. Removing the output rollers (2 of 2)..........................149
Figure 68. Removing the motor......................................150
Figure 69. Removing the solenoid (1 of 2)..............................151
Figure 70. Removing the solenoid (2 of 2)..............................152
Figure 71. Removing the fan (1 of 2)..................................153
Figure 72. Removing the fan (2 of 2)..................................154
Figure 73. Removing the pickup assembly plate (1 of 3)...................155
Figure 74. Removing the pickup assembly plate (2 of 3)...................156
Figure 75. Removing the pickup assembly plate (3 of 3)...................156
Figure 76. Removing the paper lift-plate assembly (1 of 3).................157
Figure 77. Removing the paper lift-plate assembly (2 of 3).................158
Figure 78. Removing the paper lift-plate assembly (3 of 3).................158
Figure 79. Paper lift-plate springs....................................159
Figure 80. Removing the pickup roller shaft............................159
Figure 81. Removing the right plate assembly (1 of 2)....................160
Figure 82. Removing the right plate assembly (2 of 2)....................161
Figure 83. Removing the left plate assembly............................162
Figure 84. Removing the left bottom frame support......................163
Figure 85. Removing the ECU pan (1 of 5).............................164
Figure 86. Removing the ECU pan (2 of 5).............................165
Figure 87. Removing the ECU pan (3 of 5).............................165
Figure 88. Removing the ECU pan (4 of 5).............................166
Figure 89. Removing the ECU pan (5 of 5).............................167
Figure 90. Removing the paper-feed assembly (1 of 4)...................168
Figure 91. Removing the paper-feed assembly (2 of 4)...................169
Figure 92. Removing the paper-feed mechanism (3 of 4)..................170
Figure 93. Removing the paper-feed mechanism (4 of 4)..................171
Figure 94. Engine test switch........................................200
Figure 95. Locating connectors for the heating element check..............203
Figure 96. Print cartridge high-voltage connection points (right side).........204
Figure 97. Print cartridge high-voltage connection points (left side)..........204
Figure 98. High-voltage connector assembly (right side)..................205
Figure 99. High-voltage connector assembly (left side)....................205
Figure 100. Overriding SW301 ....................................... 206
Figure 101. Using the firmware recovery DIMM..........................208
Figure 102. Example of a T.30 trace of a successfully sent fax..............227
Figure 103. Example of a T.30 trace of a successfully received fax...........228
Figure 104. NVRAM PJL factory variables..............................234
Figure 105. Repetitive image defect ruler...............................236
Figure 106. Main wiring (1 of 2).......................................237
Figure 107. Main wiring (2 of 2).......................................238
Figure 108. Locations of printer connectors.............................239
Figure 109. Locations of connectors and switches........................240
Figure 110. Scanner covers and ADF..................................246
Figure 111. ADF rollers and separation pad ............................. 248
Figure 112. Control panel assembly...................................249
Figure 113. Printer covers...........................................252
Figure 114. Paper tray..............................................253
Figure 115. Internal components (1 of 2)................................254
Figure 116. Internal components (2 of 2)................................256
Figure 117. Electrical components....................................258
Figure 118. Paper pickup assembly (1 of 2).............................260
Figure 119. Paper pickup assembly (2 of 2).............................262
Figure 120. Fuser assembly.........................................264
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