JMC Servo Drive Bricked!

Hi Guys, 
I'm new to the forum here. I have a milling machine with a JMC Servo motor (110JAS) driving the spindle. It has stopped working with an alarm AL-610 that started whilst I was loading/writing a new parameter to the servo drive via the JMC diagnostics software. As it was writing it triggered the alarm that caused the machine to e-stop. Powering back up even after leaving for 15minutes still produces the alarm. AL-610 is "encoder offline" fault. Despite that, I am confident the hardware is all fine and it is the parameters that have become corrupted. Does anyone know how to perform a factory reset? 

I don't know anything about that particular servo, but I would 1st suspect either a wiring issue (bad cable) or if the servo uses an absolute encoder, a dead backup battery for the encoder.

Does the diagnostic software still communicate with the drive?

I managed to fix the issue. The diagnostics software kept reporting the AF_610 and also AF_620 faults (encoder related faults), but the reason was it could not communicate with the encoder due to a bunch of random parameters set during the failed write/download from the diagnostics software. 

However these parameters are locked out to users. However you can activate a "super user" level with code "jmc2018". This will allow you to alter the necessary P00 parameters.