d. Clean the front panel, meter, and switches ; use
3-10. Organizational Troubleshooting
a soft clean cloth. If necessary, dampen the cloth with
water; mild soap may be used for more effective
a. General. The troubleshooting chart (b. below)
will help locate trouble in the power supply. Only those
corrective measures are given which the unit repairman
can accomplish. If the corrective measure does not
3-9. Touchup Painting Instructions
restore normal equipment performance, higher category
Remove rust and corrosion from metal surfaces by
of maintenance is required.
lightly sanding them with fine sandpaper. Brush two thin
coats of paint on the hare metal to protect it from further
b. Troubleshooting Chart.
Refer to the applicable cleaning and
refinishing practices specified in TB 746-10.
When operating on 115 or 230 volts ac, the AC or NORM lamp fails to Defective
light, but there is a voltage indication on the OUTPUT METER.
3-11. Replacement of Indicator Lamps
a. Unscrew the indicator lens.
b. Remove the defective lamp and replace it with a new one; make certain it is of the correct type. Replace the "O"
ring seal (after lubricating with clear silicone grease) and indicator lens.
Change 3 3-3