Pest (Print Engine Self Test); Fault Codes; Fault Code Definition Table - Xerox Phaser 8400 Service Manual

PEST (Print Engine Self Test)

These tests occur after the POST tests have been run and postscript has been
initialized. Error codes for the PEST tests are displayed on the front panel and are all
in the 37,xxx series. Definitions for the PEST tests are provided in the Error Code
Definition Table beginning on page 3-8.

Fault Codes

Fault Code Definition Table

The following paragraphs will assist you in decoding the information contained in the
fault codes:
Failing system (XX,yyy.zz)
Failing subsystem (xx,YYY.zz)
Type of problem (xx,yyy.Zx)
Print engine copy count (xx,yyy.zz:123) when the error occurred
Program faults are 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.
CPU exceptions are indicated by a 7 in the tenths place of the fault code
(xx,yyy.7z).
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.
Note
A CPU exception can either be caused by hardware or firmware error. Refer to
the infoSMART knowledge base for descriptions of the most common faults.
Device faults are indicated by a 4 in the tenths place of the fault code
(xx,yyy.4z). Indicates a hardware problem. Some of the more common device faults
are documented in this section.
Note
In customer mode, the printer will reboot each time an error occurs. If three of
the same errors occur within 72 hours, or 1000 pages, then the fault will be
displayed on the printers front panel. The fault codes are saved into non-volatile
memory and can be retrieved from the fault history.
Service Manual 3-7