2 - 44 Phaser 840/850/860/8200 Color Printer - Service ManualFault CodesError codes indicate the following: The failing system (XX,yyy.zz) The failing subsystem (xx,YYY.zz) The type of problem (xx,yyy.ZZ). The print engine copy count (xx,yyy.zz:123) when the error occurred.Program faults indicated by a 6 in the tenths place of the fault code(xx,yyy.6z). Unfortunately, there are too many program faults to enumerate them alland most program faults will not mean anything unless you are intimately familiar withthe code base. Some of the more common program faults are documented in thissection.In customer mode, program faults cause the printer to automatically reboot and nomessage is displayed on the Front Panel. The fault codes are saved into non-volatilememory and can be retrieved from the fault history.CPU exceptions are indicated by a 7 in the tenths place of the faultcode (xx,yyy.7x). The error code indicates both the PowerPC exception number andthe region of firmware that was executing when the exception occurred; Engine,PostScript, Network, or Operating System.The PowerPC 603e processor, used in the Phaser 850 and 860, can detect a number ofexceptions that occur as a result of external signals on the Print Engine ControllerBoard, other errors or unusual conditions during the execution of instructions. A CPUexception can either be caused by hardware or firmware error. Refer to infoSMART fordescriptions of the most common faults.
