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How to distinguish the front side and back side of the PCBnewlisttop
How to distinguish the front side and back side of the PCB
Distinction between the front side and back side of single-layer PCBMany people will ask how to distinguish be...
Shovelling method of four-layer PCB
Shovelling method of four-layer PCB
Shovelled four-layer PCB refers to a PCB board whose components have all been removed with a clean surface. If...
How to reduce multi-layer board to double-layer board in PCB design?
How to reduce multi-layer board to double-layer board in PCB design?
The method of reducing multi-layer board to double-layer board in PCB designIn some Prototype PCB design, the...
How to select the materials for PCB substrate?
How to select the materials for PCB substrate?
1. EN/A (Electrolytic Ni/Au)2.OSP (Organic Solderability Preservatives)3.IA(Immersion Ag)4.EN/A(Electroless Ni...
Integrity of power in PCB circuit
Integrity of power in PCB circuit
Power integrity and signal integrity are closely related to each other. Under many circumstances, the main cau...
The method and steps of shoveling PCB
The method and steps of shoveling PCB
Firstly, after getting the PCB, you should record the model No., parameters, position of all the components on...
PCB processing technology and equipment
PCB processing technology and equipment
PCB equipment includes plating wires, electroless plating copper, DES wires, DES wires, cleaning machines, OSP...
Processing technique of SMD
Processing technique of SMD
1. Based on Gerber and BOM from the client, technology files are prepared to generate coordinate files.2. Be s...
PCBA test
PCBA test
PCBA test is the most crucial quality control step in the entire PCBA processing procedure, which should be in...
Several important elements in the later check of PCB design
Several important elements in the later check of PCB design
When the routing in finished on one PCB Prototyping board and there is no error in both the connecting and th...

The common malfunctions and the treatments of PCB sub-machine

November 5, 2019

PCB Image:The common malfunctions and the treatments of PCB sub-machine

1.If the indicator light is off when the switch in opened: one possible reason is the fuse wire is fused and needs to be replaced; the other possible reason is the emergency switch is off.

2.Wrong miles counting: one possible reason is that the miles counter is broken and needs to be replaced; the other possible reason is that there is too much dust on the mile counter and it only needs cleaning.

3.Knife hitting the left side board: one possible reason is that light sensation on the left side is broken and needs to be replaced; the other possible reason is that there is too much dust on mile counting switch on the left side and it only needs cleaning.

4.Knife hitting the right side board: one possible reason is that light sensation on the right side is broken and needs to be replaced; the other possible reason is that there is too much dust on mile counting switch on the right side and it only needs cleaning.

5.The motor is working while the knife is not: jackscrew of the coupling is loose. It will be OK when you open the back cover and screw it tight.