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Sensing open or wrong sensing taps. Check wiring. If correct check for open sensing
transformer T1 or T2.
Excessive voltage applied to regulator power input
(terminals L1 & L2).
Check wiring. Voltage should be 120 Vac, 400 HZ,
nominal.
Voltage Unstable
Stability adjust potentiometer R7 not properly set.
(Stability insufficient).
Adjust R7 as described in chapter 3.
Slow Response
Excessive load. Remove excessive load.
Stability adjust R7 not properly set. Adjust R7 as described in Chapter 3.
Poor Regulation
Excessive load. Remove excessive load.
Stability adjust R7 not properly set. Adjust R7 as described in chapter 3.