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Featured blog article:

Common problems HP Solution Center not working : Adobe Flash Player Error and Unable to scan
We would like to share some of the most frequently asked questions about HP Solution Center not working : Adobe Flash Player Error and Unable to Scan.

‎10-25-2026 12:29 AM

HP Recommended

Hello,

 

I need repairing my scanner and I like to find mother board and schematics for the Scanjet 4750C (C7710A)

Many thanks in advance for your help

 

Serge

Category:
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3 REPLIES 3

‎10-25-2026 05:18 AM

HP Recommended

Hi Serge - You can find a parts list here

 

Parts available, if any, might be found here

 

You might also check out ebay

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‎10-26-2026 03:01 AM

HP Recommended

Hello,

 

Thanks for the answer but I don't need plastic part I've to repair electronic main board.

I've till find these links on my research

 

My question is always here for schematics and maintenance manual

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‎10-26-2026 07:47 AM - edited ‎10-26-2026 07:48 AM

HP Recommended
@Laikeen wrote:

Hello,

 

Thanks for the answer but I don't need plastic part I've to repair electronic main board.

I've till find these links on my research

 

My question is always here for schematics and maintenance manual

Good luck getting a schematic or actual maintenance manual.  It it hard enough just getting a phone number to a real person let alone hacking into their "family jewels".  I don't think even with an NDA will help.

Thank you for using HP products and posting to the community.
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this post useful click the Yes button. If I helped solve your
problem please mark this as a solution so others can find it
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