Another little tip for you, a problem which happened at this hospital, and which I also saw in the shelters at the Elekta factory.
Symptoms : some or all of the following currents are unable to reach their required values Bending Coarse, Bending Fine, Focus 1, Focus 2, Mag Mag. Similar to the Low Bending Current fault already in the FAQ list.
Fault : May be caused by a failed(burnt-out) socket/plug combination at the reeling post (SK/PL60 F on newer SL's) - you will be able to detect this fault by the distinct odour around the reeling post. Replace the housings and all affected pins and sockets.
Regards
Stuart E Vessey
Medical Technical Officer Guy's and St Thomas'Hospital NHS Trust