Inkjet printer parts inspection methods and techniques

In the daily office process, the sudden failure of the inkjet printer is a headache for office workers. How to carry out the preliminary inspection can quickly solve the small problem, and the editor arranges the inspection and maintenance methods and skills of the common printer parts to help the majority of spray friends.

1. Quick repair method of interface circuit

If the printer can print, but the specified content cannot be printed, "@@@@@ ......" or other characters appear, and a similar failure occurs during self-test printing, it is mostly due to damage to the interface circuit. The interface circuit of the printer belongs to a digital circuit. To determine whether it is damaged, it can be detected by an integrated circuit tester.

Because the model of the interface chip is roughly the same, the replacement method can also be used for maintenance. If it can work normally after the replacement, it means that the interface chip is damaged. Most of the interface chips of the new printers are not directly soldered, but are installed with integrated circuit sockets, so it is not too difficult to replace them. For the installation of integrated circuits in old-fashioned printers, an integrated circuit socket can be soldered, which will facilitate maintenance.

Second, the inkjet head cleaning system failure

Under normal circumstances, after the inkjet printer is turned on, the inkjet head is driven by the word car, and moves to the nozzle cleaning unit to execute the automatic nozzle cleaning program. After that, the nozzle is sealed by the sealing rubber on the nozzle holder to ensure the cleanliness of the inkjet head. When the inkjet head cleaning system fails, the printhead makes an error during the cleaning process. At this time, the following processing can be performed:

1. Some components in the inkjet head cleaning system are damaged, such as the aging of sealing rubber parts. Damaged components should be replaced.

2. The main control circuit board is faulty. The main control circuit board must be replaced or repaired according to the inspection.

3. The paper feed motor operates abnormally. Since the driving of the cleaning unit in the inkjet head transmits power through the paper-feeding motor, when the motor fails, the inkjet head cleaning system is naturally affected. Check and repair the paper feed motor. The motor should be replaced if necessary.

4. The motor drive part of the character car is faulty. Since the carriage returns to the left end (some printers are on the right), the paper motor can be turned from the drive paper mechanism to the inkjet head cleaning system and automatic paper feeder. When the carriage motor drive fails, The carriage cannot move to the nozzle cleaning unit to execute the cleaning procedure. Check and repair the word car motor and its drive circuit.

In the daily office process, the sudden failure of the inkjet printer is a headache for office workers. How to carry out the preliminary inspection can quickly solve the small problem, and the editor arranges the inspection and maintenance methods and skills of the common printer parts to help the majority of spray friends.

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