No beam visible. When opening the column valves the Blanker Shutter Monitor(BSM) shows "Gun Deflector controlled by Auto Blanker“.
These are possible resolutions for the issue:
- Replaced BSDR and upgraded firmware.
These are possible causes for the issue:
- BSDR defective.
- Check LED of IPB status. When column valves open BSM shows beam still blanked and all LED of IBP are on. While column valves closed all LED on except H11.
- Measure voltage between X5-1 and X5-2 at the IPB. If H11 is not on, then the voltage coming from MBGONIO is not present. Voltages were present when H11 is on when the column valves were open.
- Unplugged all shutters, turned off all cameras and restarted the system, no improvement.
- BSDR no error.
Solution: Problem resolved after replace BSDR and upgraded firmware.