Check voltage across R1193. Should be 180v. Ground referenced, -50v, +130v
Check voltage across R1045 too. Should be 100v DC. From ground reference, ±50v.
If they check out fine, check voltage at pin 2 and pin 3 of P1194 ground referenced. Should be around +25v at pin 2. Pin 3 will vary between 0-130v.
If those still check fine, measure voltage at anode of CR1255. High voltage will be present here!!!!! The voltage should vary depending on the focus setting. Report back.