HP LaserJet Enterprise 700 M712 series Handbuch Zur Fehlerbehebung Seite 250

W = 6, Open fuser, breaking of a heater wire
1.
Check the power source. Make sure the power source meets product requirements.
NOTE:
fuser temperature control does not work properly and causes this error.
2.
If this product was previously serviced, check the connector (J61) on the DC controller PCA.
3.
If the error persists, replace the low-voltage power supply.
W = 7, Fuser pressure-release mechanism failure
1.
Remove and then reseat the fuser. Make sure there is no residual paper in the fuser.
2.
Check the fuser pressure-release sensor flag. If it is damaged, replace the fuser.
3.
Use the fuser pressure-release drive test in the component test to verify that the fuser motor (M3) is
properly functioning. If it is not, replace the fuser motor (M3).
4.
If this product was previously serviced, check the connector (J61) on the DC controller PCA.
5.
If the error persists, replace the fuser.
W = 8, Low fuser temperature 2
1.
Remove and then reseat the fuser. Make sure there is no residual paper in the fuser. Make sure the
product is not located in front of a vent or window where cool air may interfere with the ability of
the fuser to heat up.
2. Check the product power source. Make sure the power source meets product requirements. Make
sure this is the only device using the circuit.
3. Check the connector (J1) between the fuser and the product. If it is damaged, replace the fuser.
4. If this product was previously serviced, check the connector (J61) on the DC controller PCA.
5. If the error persists, replace the fuser.
W = 9, High fuser temperature 2
1. Remove and then reseat the fuser. Make sure there is no residual paper in the fuser. Make sure the
product is not located in front of a vent or window where cool air may interfere with the ability of
the fuser to heat up.
2. Check the product power source. Make sure the power source meets product requirements. Make
sure this is the only device using the circuit.
3.
Check the connector (J1) between the fuser and the product. If it is damaged, replace the fuser.
4.
If this product was previously serviced, check the connector (J61) on the DC controller PCA.
5.
If the error persists, replace the fuser.
224 Chapter 2 Solve problems
If the power source does not meet the power frequency requirement of 43 to 67Hz, the
ENWW