ERROR 35 LORAD M-IV

Check and calibrate your filament waveforms, also check your filament standby voltage 

Be sure to check the fuses in the bottom, inside the center of the gantry (left door). 9 and 23 have been known to cause the filament standby voltage to drop to zero because they have become dislodged or the connections simply has become lost caused by corrosion or other factors. Reseat all the connections on the Filament Control board as well. You are looking for 250 mV +/-10mV as the standby voltage R74.

Hi jodiflo,

i was check voltage across the R74. (0) volt across the R74. and i was check all the fuse.

All fuse was Ok. now what should i do.

Replace the filament control board

Hi jay how i check the filament voltage.