| The dome is manually locked out.
| If it is safe to do so, the lockout switch by the North pier needs to be turned to the OFF position.
| Mechanical or electrical electronic standby.
|-
| row 2The autoguider Lodestar camera is not reading out, cell 1or the guider GUI keeps crashing.| row 2, cell 2The Lodestar camera needs rebooting.
| row 2, cell 3
| Electronic standby if on site, otherwise mechanical standby can fix this.
|}