3-10 Phaser 7400 Color Printer Service Manual
Fatal Errors
T1 Fuser Upper Failure 3-90
T2 Fuser Lower Failure 3-90
T29 Temp Sensor Failure 3-92
T30 RH Sensor Failure 3-93
T31 RH Wet Sensor Failure 3-93
T32 LED Over Temperature Failure 3-94
T34 Motor Overheating Failure 3-95
U0 Engine ROM Failure 3-96
U1 Engine RAM Failure 3-96
U2 Engine EPROM Failure 3-96
U3 Engine EPROM Missing Failure 3-96
U4 Engine SRAM Failure 3-96
U5 Engine Control Failure 3-96
U6 Power Supply Failure 3-97
U7 Feeder Home Failure 3-98
U8 Controller Fan Failure 3-99
U9 Power Supply Fan Failure 3-100
U10 Top Cover Cooling Fan Failure 3-101
U11 Imaging Unit Fan Failure 3-102
U40 Transfer Unit Fan Failure 3-103
U41 Engine Cavity Fan Failure 3-104
U12 Duplex Interface Failure 3-105
U14 Tray 3 Interface Failure 3-106
U13 Tray 4 Interface Failure 3-106
U16 Tray 5 Interface Failure 3-106
U17 Tray 6 Interface Failure 3-106
U51 Inverter Unit Interface Failure 3-107
U18 Yellow LED Failure 3-108
U19 Magenta LED Failure 3-108
U20 Cyan LED Failure 3-108
U21 Black LED Failure 3-108
Error Message Summary (Continued)
Error Control Panel Message Page
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