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2 - 44 Phaser 840/850/860/8200 Color Printer - Service Manual
Fault Codes
Error 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 all
and most program faults will not mean anything unless you are intimately familiar with
the code base. Some of the more common program faults are documented in this
section.
In customer mode, program faults cause the printer to automatically reboot and no
message is displayed on the Front Panel. The fault codes are saved into non-volatile
memory and can be retrieved from the fault history.
CPU exceptions are indicated by a 7 in the tenths place of the fault
code (xx,yyy.7x).
The error code indicates both the PowerPC exception number and
the 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 of
exceptions that occur as a result of external signals on the Print Engine Controller
Board, other errors or unusual conditions during the execution of instructions. A CPU
exception can either be caused by hardware or firmware error. Refer to infoSMART for
descriptions of the most common faults.