Stephenasked Apr 16, 2007 at 12:22pm
HP LaserJet 49 Error Troubleshooting
a 49 error is a firmware error, it might be caused by the firmware itself, or by the failure of a printer module.
Here's my method for isolating the cause:
Verify that the problem is not being caused by a specific job, this error can be caused by bad information being sent to the printer, never try to fix a printer when it's not broken, <g>.
Power off and remove any installed EIO devices, (JetDirect Cards, Hard Drives), power on and test.
Cold Reset the printer. (some procedures below)
Power off, remove any optional memory, power on and retest.
Power off and reseat any memory and firmware modules on the formatter board, power on and test.
Power off, reseat the formatter board, power on and test.
Check firmware version, on newer machines with flashable firmware upgrade to the latest version. If you are running the latest version reload it, this might fix corrupted firmware. (Some printers have flashable firmware, others use a Firmware DIMM which must be replaced to upgrade.)
If you haven't found the cause yet it's time to start swapping parts, here's the order I find logical.
Firmware module if it's a DIMM as opposed to being part of the formatter.
Memory if installed, some printers have to have at least one memory module installed to run, and it must have enough capacity to function, in some cases installing a module that does not meet the minimum requirements of the machine will cause a 49 error, (I saw this recently testing a LaserJet 9000).
LaserJet 4000/4100/5000: Power off printer, wait about 5 seconds, push and hold the GO button, then power it on. When Cold Reset appears on the display let go of the button.
LaserJet 4250: Power off printer, wait about 5 seconds, then power it on, when asterisks start appearing on the display press and hold the check mark until all 3 lights come on solid, then use arrow keys to find cold reset and push check mark to perform the reset.
I would appreciate other Tech's reading this thread to add their thought and approaches.
be sure to re-enable it after the reset is done.
49.4c04 service error at HP LaserJet 4100 TN
HP said I have a network problem - all the other computers, printers are working fine.
All suggestions are appreciated.
Any other thoughts on this?
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