Thrush Aircraft S2R–T660 Maintenance Manual page 251

TROUBLE
INTENTIONALLY
No power indicated with
battery switch on
Power on with battery switch
in OFF position
10 - 9
THRUSH AIRCRAFT INC - T660 TURBO THRUSH
AIRCRAFT MAINTENANCE MANUAL
PROBABLE CAUSE
Charging rate too high
Battery discharged, defective
or disconnected
Blown C/B in battery control
circuit
Defective wiring in battery
control circuit
Defective battery relay
Battery switch defective
Shorted or sticking contacts
LEFT
Effective: 12/17/03
REMARKS
Adjust voltage regulator
to 27.5
BLANK
Check battery, recharge
or replace battery
Check C/B and reset if
necessary
Continuity. Check
circuitry and repair as
necessary
Check relay for proper
operation and replace as
necessary
Check switch for proper
operation. Replace if
necessary
Check switch and relay
for proper operation.
Replace if necessary.