How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Russell H. Your Own Question

Russell H.
Russell H., Printer and Office Tech
Category: Printers
Satisfied Customers: 9286
Experience:  11+ yrs experience, inkjets & lasers, from huge to portable
Type Your Printers Question Here...
Russell H. is online now
A new question is answered every 9 seconds

Error code 5003, KM hub C6500, replaced boards, no

Customer Question

error code 5003
JA: Just to clarify, have you double-checked the code? And what is the exact make and model of your machine?
Customer: KM biz hub C6500
JA: What troubleshooting have you tried?
Customer: replaced boards
JA: The printer expert can solve this for you. Anything else you want him to know before I connect you two?
Customer: no
Submitted: 1 month ago.
Category: Printers
Expert:  Russell H. replied 1 month ago.

Hi, thank you for contacting My name is Russell. I will do my best to provide the right answer to your question.

Where does the error code 5003 appear, please? on the computer's screen when you try to print, or on the Konica-Minolta machine itself? and is it an SC code, by any chance?

Customer: replied 1 month ago.
It is on konica Minolta machine itself... sc code ? ... service code... no
Expert:  Russell H. replied 1 month ago.

just code 5003 ?

OK I am researching that, one minute or four please...

Customer: replied 1 month ago.
No I won't pay $39 additional... I want my $5 guaranty tefund
Expert:  Russell H. replied 1 month ago.

That message came from the system not from me, I assure you - I have no power whatever over billing, nor any power to send you such a message.

Still researching... a few more minutes please...

Expert:  Russell H. replied 1 month ago.

An error C-5003 on that sort of machine, means a power supply voltage problem.

24 V may be being wrongly supplied, or shorted out.

12 V line might be similarly compromised.

Do you wish to try to fix this yourself? if so, two steps

1. measure the 24 V and 12 V lines for proper value within specification.

2. if not correctly supplied, check for short circuited components, and replace power supply.

Does this answer your question, please?

Customer: replied 1 month ago.
I can let yoy know If that works there a way to let you know... if so I would deal with you again for the next issue
Expert:  Russell H. replied 1 month ago.

Come back to this at

And if you're really done with this issue, please rate my work and my answers. A five-star rating would be appreciated!

Thanks. Have a good evening.

Customer: replied 1 month ago.
Came on with a good answer but won't know if it is correct until I look at machine this week
Expert:  Russell H. replied 1 month ago.

OK. Let's get back to this case when you've had a look at the machine.