Question about HP Color LaserJet 5550dn Q3715A Workgroup Up to 27 ppm 600 x 600 dpi Color Laser Printer

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No display in control panel

Im troubleshooting hp color laserjet 5550n and the problem is no display in control panel. I dont know if the printer is initializing and one proble also when I turn on the printer all LED are in solid light...

Can you help me to solve this problem?

thanks...

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Had this problem after a power hiccup. The firmware on my HP 5550 / 5550n has been a problem in the past, needing updating or currupting, but this time I was getting the power on, a backllit control panel but no menus or text, and steady on READY, DATA and ATTENTION lights. At any rate I saw a solution on the Internet and owe that poster a beer if I can ever find him.

All things led to a corrupt Firmware. Problem and most beleieve you have to send for a new Firmware FlashCard and that takes time and big $$$. I found that if you can find another working 5550 / 5550n you can pop it's firmware FlashCard, make an image of it, and restore your own firmware to a working state.

The 5550 /5550n printers firmware resides on a 32MB Compact FlashCard on the printers Formatter Board. (The formatter board is held into the printer by 8 screws, and also has the JetDirect card on it.). This Firmware FlashCard when removed, will fit in a standard Compact FlashCard reader, and can then be attached to any Windows Machine for manipulation.

NOTE that this Compact FlashCard containing the printers firmware involves a proprietary HP created partition that a Windows PC cannot even read. Thus when connected to a Windows PC you'll see nothing, and may well be challenged to format the card!!! --- Obviously... DON'T DO IT !!

There is a FREE program called SelfImage available. Just Google: download SelfImage. The pesent version of SelfImage as of this writing is v1.2.1. It can and will see the contents of the FlashCard, and thus can make an image file of the FlashCard for use down the road. Should the firmware on the CompactFlash Card ever get corrupted, you can restore it from any image file by simply using the SelfImage program in reverse.

I made two image files of a good firmware flashcard from a working 5550 / 5550n because when you choose to make the backup image in this SelfImage program, you can do either the entire physical drive, or just a selected partition of a physical drive. In the case of this printer's firmware FlashCard, the drive and partition appear to be one in the same, as will be evidenced by the exact same file size of the resulting images. I made copies both ways (drive and partition) just be sure all possibilities were covered.

I now make copies of that Firmware everytime it's upgraded.

Posted on Jul 03, 2012

  • Steven Heaton Mar 03, 2013

    Excellent post. Could you post a copy of the firmware please?

  • Alex Gerasimoff May 23, 2013

    Hi there! Could you share your 32M image of firmware with me please? Got totally stuck after loading it via lpt.

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3 Suggested Answers

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SOURCE: Color Laserjet 5550n 59.0 error

How to solve 50.0 error for HP 5550n

Posted on Apr 24, 2010

seeker5211
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SOURCE: How can I solve the

The error says that "The transfer rollers in the ETB are not
engaged."

If replacing the ETB(electronic transfer belt) doesn't fix the problem, your printer is going to need a technician. Problem could be poor seating of the cables on the ETB motor or the 'transfer-roller separation solenoid or the DC Controller.
It could be a bad ETB motor or solenoid or DC Controller or high voltage power supply.
This isn't something that is going to be fixed by email.

I hope you have a service contract for your printer.

Posted on Feb 18, 2011

FixinFax
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SOURCE: HP Color laser jet 5550n does not print in

Uncheck the PRINT IN GRAYSCALE box in Printer Properties.

Posted on Jul 06, 2009

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