Piper CHEROKEE WARRIOR PA-28-151 1995 Maintenance Manual page 529

PIPER CHEROKEE WARRIOR SERVICE MANUAL
12-20. AVIONICS MASTER AND EMERGENCY SWITCH CIRCUIT
12-21. DESCRIPTION AND OPERATION
a. PA-28-161, Warrior II (Optional)
Electrical power for various avionics components is controlled by the avionics master switch near
the top of the instrument panel between radio stacks. It controls power to all radios through aircraft master
switch.
An emergency bus switch is also provided for auxiliary power to avionics bus if the radio master
switch circuit fails. The emergency bus switch is behind the lower right shin guard to the left of the circuit
breaker panel.
Refer to Section XI, Wiring Diagrams, for switch schematics.
b. Warrior III
Electrical power for various avionics components is controlled by the radio master rocker type
switch located in the center instrument panel just below the radios. The battery master (BATT MASTR),
located in the overhead switch panel, must also be ON in order to provide power to the RADIO MASTER
switch. An emergency bus switch is not required on the Archer III.
Refer to Section XI, Wiring Diagrams, for switch schematics.
12.22. AUTO FLIGHT
12-23. GENERAL
It is the user's responsibility, when servicing or inspecting
v e ndor equipment installed in Piper aircraft, to refer to the
applicable vendor publication.
Do not use a substitute trim system component part for an
original design part. The fail-safe characteristics of the system
will be compromised. A trim system running the wrong
d i r e ction is the same as a run-away. Such conditions will
cause excessive pilot yoke force in only 3 to 4 seconds.
Due to the wide variety of Automated Flight Control System (AFCS) options, it is mandatory to fol-
low service literature published by the individual manufacturer of the AFCS equipment installed in any air-
plane. This includes mechanical service such as; adjusting bridle cable tension, servo removal and installation,
servo clutch adjustments, etc.
12-24. NON-PIPER AFCS EQUIPMENT MANUFACTURERS
Refer to following list of AutoPilot/ Flight Director manufacturers for service direction, parts support,
and service literature:
Revised: February 28, 1995
WARNING
WARNING
2K2
Island Enterprises
ELECTRONICS