Weeke BHC 550 - Disable Front Tool Changer

Hi, we have a Homag Weeke 550 with a front and rear tool changer (both 8 tool). But the motor on the front tool changer has burnt out, meaning the machine cannot run the reference routine (stops at SYNC M100). The KEB Invertor 2 also comes up with a error message (E.UP) as soon as the machine is turned on but I think this is related to the burnt out motor.
Is anyone aware of a way of bypassing the front tool changer too allow us to have some functionality with the rear?

Thanks for any advice,
Hugh