HP Color Laserjet CM4540MFP Error 49.38.07

[Plotwise]

I know the error code relates to a firmware issue & I've followed other recommendations. Removed the network RJ45 cable & powered the machine back on. Cleared any print queues. Unplug the device from the mains & reconnect. Remove the formatter & re-seat. I can't get past or clear the error code. When powering back on, the machine reaches checking hardware, then fails after 5 has displayed. Is there a way of formatting the HD or getting into service mode? Holding the clear key down whilst powering on doesn't seem to work.

[Repairatrooper]

Refer to the section on entering Pre-boot in the Firmware Upodate readme file here http://ftp.hp.com/pub/softlib/software13/printers/CLJCM4540/readme_cljCM4540_fs3.pdf

Question, when powering back on did you have the network cable unplugged from the machine? If not, try restarting with no usb or network connections

[Plotwise]

Thanks Repairatrooper, yes I did state I'd removed the network cable from the machine before powering up, which didn't overcome the error code. I'll give that a read & report back

[Plotwise]

Hi Repairatrooper, I've resolved the issue with the pre-boot procedure, so thanks for pointing me in the right direction. I had seen this before, but it led to to hold down the clear key whilst powering on, which of course doesn't work. The first attempt at downloading the firmware did say complete, but when booting back up, it failed again at the same point. I tried the Format mode which said it needed a firmware update to perform that, so I decided to download the firmware file again, which completed again. However this time, the machine came back to ready. Machine up & running again

[Repairatrooper · Accepted solution]

Glad to hear that the issue was resolved successfully.