Laser printer hardware failure initial diagnosis

LASER PRINTER REPAIRING TIPS

1 pickup component damage
in various parts of the printer's paper path is equipped with jam switch or sensor, the printer at work to regularly check the paper through the state, if not timely paper in a certain position to be sent away, or into the paper feed rollers do not breathe paper jam error will be reported,
a common reason is that the pickup roller damage, the pickup motor damage or circuit damage. This failure can only be repaired or replaced.


2 paper path sensor fault
in the paper path, the sensor is very important, if the sensor itself is damaged, poor quality toner, dust, pollution or scraps of paper to block the light, it will cause the sensor does not work, so that the machine will always be in jam state. In such cases, you should first check the paper detection sensor and the sheet discharge detection sensor is damaged. Shake feed detection sensor lever to detect DC controller board connector voltage varies between 0 ~ 5V in, if it is, then the high voltage power supply problems, need to replace the high-voltage power supply circuit board; and if so, will continue to check the DC controller circuit and discharge paper detection sensor. Also, be sure to use high-quality professional toner.


3 drive component failure
drive clutch, gear and shaft slippage will cause the paper transport disorders, causing jams. If the electromagnetic clutch does not pull, can not drive suction roller rotates with a multimeter measuring whether its input voltage to determine fault or the clutch itself front power failure. If you rotate the pickup roller rather than feed, you need to check whether the paper tray in place, pull roller dirty or oil reduces the friction, but also with no feed, apply a damp cloth or alcohol.


4 separate component failure
is the role of the separation claw paper detached from the surface of the drum, if the separation claw damage or deformation of the separation claw springs, etc., will make the paper can not be detached, causing a paper jam, which is also common causes of jams printer world. Separating claw damage may damage the drum, therefore, must always cleaning and inspection.