Piper Arrow IV Turbo Maintenance Manual page 197

CHART 2403. TROUBLESHOOTING (ANNUNCIATOR PANEL) (cont)
Trouble
VAC warning light fails to
operate.
VAC warning light fails to
extinguish.
ALT warning light fails to
operate.
ALT warning light fails to
extinguish.
Test switch fails to activate
warning lights.
PIPER AIRCRAFT
PA-28RT-201 / 201T
MAINTENANCE MANUAL
Cause
Bulb burned out.
No current to sensor.
Sensor activates at a too
low setting.
Defective sensor.
Sensor activates at a too
high setting.
Sensor terminals bridged.
Defective sensor.
Bulb burned out.
No current from bus to
resistor.
Blown fuse.
No current from the fuse to
the resistor.
Bad switch or connections.
1I5
Remedy
Replace.
Check all wire segments and
connections.
Replace.
Replace.
Replace.
Remove material between
terminals.
Replace.
Replace.
Check all wire segments and
connections.
Replace 5 amp fuse near the
diode heat sink.
Check all wire segments and
connections.
Check wires and replace
switch if necessary.
24-02-00
Page 24-10
December 1, 1978