Streaking on Prints

[Schumaan]

1. PROBLEM STATEMENT: I am getting black (dark grey) streaks (Photo attached) from my prints, both prints from file and photocopies.

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PROBLEM: Black streaks on prints

2. ACTION TAKEN: I performed 'printer service > cleaning page'  multiple times but issue still persists.

3. OBESERVATION: Upon inspection, black (dark grey) streaks are observed on the following parts: (Photos attached) "Note: Terminologies used may be inaccurate, please refer to the image attached"

3(a) Imaging drum

3(b) Transfer roller

3(c) Transfer belt

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3(a) Streaks/tracks on 'Imaging Drum'

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3(b )(c) Streaks/tracks on 'Iransfer Belt' and 'Transfer Roller'

QUESTION:

Q1. What could be the cause of the problem above?

Q2. Can the hardware be cleaned? If so, what are the appropriate steps to do so?

[Schumaan]

👋Hi HP support team,

Unfortunately, I am still unable to solve the problem on my own.

I would love to receive some professional advice from the team. 

Sincerely,

Schumaan

[Repairatrooper]

Most likely the cartridge that you show the picture of is defective and replacing it will resolve your problem.

[Schumaan]

Thanks repairatrooper for your advise and knowledge-sharing.

I attempted cleaning the parts and new prints seem clean.

Do you know if there is use of waste toner container/cartridge in printer model (HP LaserJet 100 color M175nw)?

If so, how would I go about accessing it?