49 4C02 error

Turn off the IPP protocol, and turn off Multicast IPV4

The 49.xxxx errors are indeed related to firmware and the formatter and can indicate faulty firmware or formatter... but are almost always triggered by some kind of communication that the machine doesn't know what to do with... thus generating an error.

Power fluctuations (not clean power), or random noise (RFI/static) transmitted on network or printer cables can also cause this problem. If your unit sits on a line of power that is shared with other devices (another printer/copier or a group of computers or a vending machine or cooler)... move it to a dedicated power outlet.

If it's caused by signals the machine is receiving, it can be tricky to correct.

Some complicated printer errors can be triggered by more than one thing. Printer error code "49.4c02" is one of them. It occurs when there is corrupted data. This may confuse the printer, and it stops functioning. In other cases, the data is corrupted while being transferred to the printer. Some printer models are naturally prone to this error because of their driver, while others can display this error while printing a specific font.
Printer error code 49.4c02 may be caused due to the following:

* Corrupted or big size print queue
* Hardware problems
* Faulty memory storage

http://printers.iyogi.net/errors/printer-error-494c02.html

Step 1: Delete Print Queue Jobs:
Delete the jobs which are in the Print Queue. You can do this by the following,
• Tap to Printer Icon at the right hand corner of your PC to open the Printing Device.
• Open the Print Queue list. And delete all jobs which are in the queue.
Step 2: Print a Test Page
While you have turned off your printing machine, remove the plug which connect your printing device to system and then again power on. When your cable is disconnected then check is printer is in ready state. After that you can take a print test.
Step 3: You need to disable Advance Printing Features:
• Tap to Windows Logo Printers
• Select Printer Queue
• Using left click select printing preference
• Here you need to select Advance Option
• from the Document Option choose Advance Printing Features
• Now tap to disable it.
• Now check the print quality. And if the error still persists, then move for the next step.
Step 4: Check Whether the Printing Font is Franklin Gothic Book Font or Not
Sometimes Franklin Gothic Book Font causes this Error.
Step 5: Flash and Update the Printer's Firmware
The error may also be occurred due to corrupted or outdated firmware. To fix the HP device error 49.4c02 Flash your Printer's firmware.
Call to HP Printer Customer Support Number for Urgent Help:
To fix the HP device HP Printer Error 49.4c.2 dial HP Printer Customer Support Number 24/7 and avail urgent experts help. Professionals at HP technical support will ease down your all the stress related to HP Printing device.
Source URL: HP Error 49.4c02

Well I was having the same problem. I cleaned out the queue by canceling the job that it was having the problem with. Turns out the data being sent to the printer was corrupt in this case.