Here's a couple of alarms for future reference (I've just had both)
1049-40 Alarm-A VAC Inverter Bridge Short Circuit SPDL
This means the VAC unit for the spindle drive is bad. Change (or repair) the VAC unit.
1048-40 Alarm-A VAC Motor Cable Overcurrent SPDL
Really nasty one. This means the spindle motor is bad/burned-out/short-circuited.
To repair this requires removal of the entire spindle (because it's a direct drive motor and the winding is around the spindle) and then re-winding the motor to factory specifications. A big expensive job.