Hi,
it seems that something is wrong with wires of the Estop button located on teach pendant (Estop Button itself, cable, connector at CS8c ...)
Your system more likely has an estop, thus 24v2 does not light up. It shows up when armpower is ON. Check on J109 that the Estop channels are open (J109-5/J109-24 and J109-6/j109-25)
I would suggest to :
Switch off controller.
Disconnect SP2 plug from CS8c and connect the short plug (usuallly delivered with the system)
switch on controller
Check again on J109, that system doesn't report Estop state.
If this is the case, the problem comes from SP1 .
I would suggest to carefully open the SP1 and
disconnect Estop button
Check the contacts of the Estop button.
If they are ok, place some thin wires in the connector to short cut the Stopbutton and check that the problem is linked to the cable.
Have fun
regards