Why are photocopiers often broken? Is it necessary to learn to service copiers?

A photocopier is an electronic device that functions to scan and print documents in very large numbers, from hundreds of thousands to millions of sheets, very different from printers, which have limited print capacity.
Inside the photocopier there are very many electronic circuits that are interconnected between one circuit and another, plus the many connecting cables in the photocopier that make the way the machine works is complicated. as a beginner who doesn't understand how the machine works, you will be confused about how to fix it if the photocopier experiences errors, paper jams and severe damage. Experienced technicians sometimes have trouble dealing with photocopier errors, but there's nothing wrong with learning how to service photocopiers.
The names of the Electronic and Mechanical Parts of the copier include the following:
1.Power Supply
2. DC Control
3. Mainboards
4. Anti Rush
5. HVT
6.AC Drive
7. Drive Motors
8. Hard drive
9.RAM
10. Flash ROMs
11.Counters
12. IH control
13. Potential Control
14. Reader Unit
15.CCD
16.LCD units
17. Laser Units
18. Drum Units
19. Fixing Units
20. Duplex Units
21.ADF Units
22. Cassette unit
23. Corona charges
24. Motor Fixing
25. Motor Hopper
26. Motor Lifters
27. Hope Unit
28. Developing units
29. Main Motor
30. Unit Panels
And there are many other parts.

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