Xerox Phaser 8400 Service Manual page 167

Temperature Status
This test scans the thermocouples and reports data on the current temperature with the goal of
providing a picture of the current temperature state of the printer. All degrees are reported in
celsius.
R# Definition
0 Reservoir Temp
1 Left Jetstack
2 Right Jetstack
3 Preheater Temp
4 Drum Temp
5 Ink Melt 1 Temp
6 Ink Melt 2 Temp
7 Ink Melt 3 Temp
8 Ink Melt 4 Temp
Purge Pump
This test determines if the purge pump system (pump/hose/purge valve/printhead) is operating
normally.
R# Definition
0 Jetstack
Temperature (deg)
1 Start Power (watts)
Service Manual
Typical
Value Actions
o Reports the current temperature
~127.7
o Reports the current temperature
~134
o Reports the current temperature
~134
o Reports the current temperature
~62
o Reports the current temperature
~60
o Yellow (usually off)
~50
o Cyan (usually off)
~50
o Magenta (usually off)
~50
o Black (usually off)
~50
Typical
Value Actions
o Reports current jetstack temperature. If the
~134
temperature is above current threshold (120
deg), the test will abort and following results
will report as 0. This avoids having ink extrude
out of the faceplate and onto the drum,
requiring both a wipe and a chase to clean up.
Reports initial peak pumping power after pump
power on. This reflects the inrush current to the
pump motor. An unusual value could indicate a
defective motor (windings/brushes/etc.).
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