Malfunction - Xerox WorkCentre Pro 412 Service Manual

Maintenance & Troubleshooting

7-6 Malfunction

Error Status Check
No power 1. Check the power supply to the
machine.
2. Check fuse F1 open.
Fuser Error 1. Thermostat open.
2. AC wire open.
3. Thermistor wire open.
4. Main PBA.
Cover open 1. Check the lever is pressed when the
top cover is closed.
2. Micro switch's contact.
3. CPU and related circuit.
Jam 0 Check where Jam 0 happens.
1. Paper is not picked up.
2. Paper is located in feed sensor.
3. Jams when inserting specific papers
such as envelope into the MPF.
4. Jams when inserting specific papers
such as envelope into the Manual
Feeder.
5. The stacker extender is unfolded.
6. The adjustable guide can grip the
paper.
Jam 1 Paper is jammed just after fuser unit.
Jam 2 Check where Jam 2 happens
1. Paper is curled and cannot exit.
2. Paper is curled in the exit cover.
7-30
Solution
1. If power supply differs from machine spec.
contact the dealer.
2. Install a new fuse F1.
1. Detach AC connector and test for an open
circuit across thermostat, if necessary install a
new thermostat.
2. Install new wiring.
3. Install new wiring.
4. Install a new Main PBA.
1, 2 and 3. Open top cover and press the
lever. If CPU detects cover close, check for
mechanical problem in top cover and lever
assembly. If not there is an electrical problem.
1. Check whether solenoid is working or not by
using Engine Test Mode
2. Check the operation of the feed sensor.
Check if it is misplaced with paper width sen-
sor.
3. Re-try using fewer sheets of paper.
•Fan the paper and align.
•Turn the paper stack.
4. Turn the paper stack
•Use paper as recommended for manual feed-
ing.
•When loading, ensure the paper detect sen-
sor senses loading
5. When using long paper, use the stacker
extender
6. Adjust guide to fit the paper width
1. This is mainly caused by double feeding.
Check paper is well stacked in feeder.
2. Check the mechanical actuation of the feed
sensor. Check the electrical operation of feed
sensor using the Engine Test Mode.
3. Check exit operation. Remove jam and
check actuator moves freely by hand. If actua-
tor is too stiff, paper can wrap around the heat
roller. Install new parts if necessary.
1. Remove the paper jam and check for paper
path obstructions
2. Check the ribs of exit cover for obstructions
to the paper path, clean the ribs or install a
new cover.
August 2001
WorkCentre Pro 412
Launch Issue