Xerox Phaser 8400 Service Manual page 194

Paper Path Status
This test looks at the paper path sensors to identify if anything would prevent a page from
printing. The Control Panel will display messages indicating if anything unexpected is found for:
R0 = upper paper path; R1 = tray 1; R2 = tray 2; R3 = tray 3; and R4 = tray 4. The display is a
string of 0's and 1's (one digit for each sensor state) and is listed below from most significant bit to
least significant bit.
1 = an item that needs to be corrected.
0 = normal
R# Definition
2, 3,
4
2, 3,
4
2, 3,
4
2, 3,
4
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
4-54
(Continued)
Typical
Value
(8400)
Typical
Value
(8400)
~127.7
o
~134
o
~134
o
~62
o
~60
o
~50
o
~50
o
~50
Typical
Value
(8500/
8550)
Typical
Value
(8500/
8550)
o o
~135.0
o
~138
o
~138
~70
o
~60
o
~50
o
~50
o
~50
Phaser 8400/8500/8550 Color Printer
Actions
3 - media length bottom
2 - Media width top
1 - media width middle
0 - Media width bottom
Actions
Reports the current temperature
Reports the current temperature
Reports the current temperature
Reports the current temperature
Reports the current temperature
Yellow (usually off)
Cyan (usually off)
Magenta (usually off)