Xerox PHASER 8500 Service Manual page 179

Phaser 8400/8500/8550/8560 Color Printer Service Manual
This test determines averaged readings for key system voltages.
Voltages
R# Definition
Main Board Voltages
0 5 Volts (volts)
1 1.8 Volts (volts)
2 2.5 Volts (volts)
3 3.3 Volts (volts)
4 unregulated12
Volts (volts)
5 2.5 Volts (volts)
6 unregulated
Negative 12 Volts
(volts)
Control Board Voltages
7 DC Power (watts)
8 50 Volts
9 Negative 50 Volts
10 Unregulated
Negative 15 Volts
11 Unregulated 15
Volts
12 AC Volts 120 Volts
AC Volts 240 Volts
This test drives the Process Drive to move the Wiper Blade a short distance in
each direction to verify the home position.
Wiper Alignment
R# Definition
0 The engage wiper
position (min)
1 Upper hard stop
wiper position
(min)
Typical Typical
Value Value (8500/
(8400) 8550/8560)
~5V ~5V
~1.8V ~1.8V
~2.5V ~2.5V
+/-2.5% +/-2.5%
+/- 20% +/- 20%
~ 2.5 ~ 2.5
+/- 20% +/- 20%
47 to 52 47 to 52
-47 to 52 -47 to 52
-11 to -16.5 -11 to -16.5
11 to 17 11 to 17
90 to 140 90 to 140
180 to 275 180 to 275
Typical Typical
Value Value (8500/
(8400) 8550/8560)
50 to 400
2000 to
5000
General Troubleshooting
Actions
Actions
Reports the distance from
wipe home to the tilt engage
position.
Reports the distance from
wipe to home to the upper
hard stop.
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