How to fix Hp printer error 49?

Hp printer error 49 may be caused by a bad order, corrupt info, invalid operation, firmware, format, or accessories such as an EIO card or memory card. Some sources also suggest that, under certain conditions, extra trays, duplexers, envelope feeders, etc. can cause this failure.

Hp 49 service error

Steps to Resolve Hp printer error 49:

Step 1: Power-Off Phase

First of all power off the device and then disconnect all communication cables like the Network, USB, or Parallel cable.
Now wait for 30 seconds and then turn On the printer back, then if the error 49 remains the same, it means that there is some issue with the communication between the computer and network.

Step 2: Managing the Printer

Unplug the printer and then disconnect all accessories such as EIO cards, memory, extra trays, a duplexer (if removable), and an envelope feeder.
If the error does not exist, after you power on the printer, then start reinstalling the part one at a time, by powering off before you go ahead with the installation phase of each part till you find the error cause.
Next, to fix this type of error, the firmware needs to be updated.

Step 3: Further Method

If error 49 is present in the printer after removing the possible causes, then go with a cold reset or NVRAM initialization method first.
A cold reset will remove all minor stored memory settings such as control panel settings or internal and external jet direct settings.
The NVRAM is more exclusive and as well as clear all internal memories such as error logs and other possible counters.
If error 49 continues to exist, then it is advised to take Hp printer help from the professional.
The clients are suggested to take their printer to the authorized Hp printer service center and ask the experts to resolve the error 49.

Source: Hp printer error 49