Service Guide
vii
Cleaning and Maintenance
77
Cleaning 78
Cleaning Page 79
Vacuum 79
Drum temperature sensor 79
Maintenance 80
Maintenance roller 80
Waste tray 80
Lubrication 81
Inspection 82
Resetting NVRAM
83
Resetting NVRAM 83
Key FRU Removal and Replacement
87
Main board 88
Power supply 89
Power control board 90
Paper/drum heater 91
Upper feed roller assembly 92
Drum/transfix assembly 94
Drum position sensor assembly 99
Printhead 101
X-axis motor and drive assembly 104
Y-axis belt drive assembly 105
Cap/wipe/purge assembly 106
Locking the printhead 108
FRU List
109
High-capacity Paper Tray Assembly 126
Service tools 128
Supplies and accessories 128
Test Prints
133
Wiring Diagrams
145
Summary of Contents for Phaser 840
Page 46: ...36 Phaser 840 Color Printer ...
Page 95: ...Service Guide 85 Clearing PostScript NVRAM menu item ...
Page 96: ...86 Phaser 840 Color Printer ...
Page 121: ...Service Guide 111 Figure 1 Cabinet FRUs 7 5 6 8 1 2 4 0388 21 3 ...
Page 125: ...Service Guide 115 Figure 3 Paper path FRUs 0388 16 2 1 5 11 10 9 12 6 4 3 7 13 8 ...
Page 127: ...Service Guide 117 Figure 4 Motors and fans FRUs 0388 14 7 4 3 5 6 2 1 ...
Page 129: ...Service Guide 119 Figure 5 Circuit boards FRUs 4 3 5 2 1 9 7 6 8 10 11 13 0388 13 12 ...
Page 131: ...Service Guide 121 Figure 6 Solenoids and clutches FRUs 4 5 3 2 1 0388 23 ...
Page 137: ...Service Guide 127 Figure 9 High capacity PaperTray 0388 65a 1 2 ...
Page 142: ...132 Phaser 840 Color Printer ...
Page 154: ...144 Phaser 840 Color Printer ...