Arrow PA-28R-201 Pilot's Operating Handbook And Faa Approved Airplane Flight Manual page 290

SECTION 9
SUPPLEMENT 7
PIPER AIRCRAFT CORPORATION
PA-28R-201, ARROW
The airplane MASTER SWITCH function is unchanged and can be
used in an emergency to shut off electrical power to all flight control systems
while the problem is isolated. (
The AVIONICS MASTER switch supplies power to
the avionics bus bar of the radio circuit breakers and the autopilot circuit
breaker.
The following circuit breakers are used to protect the following elements
of the King 150 Series Autopilot:
AUTOPILOT - Supplies power to the KC 192 or the KC 191
Computer, the autopilot pitch and roll servos, and the Pitch Trim
Circuit Breaker.
PITCH TRIM - Supplies power to the autotrim and manual electric
pitch trim systems.
COMPASS SYSTEM - Supplies power to the optional KCS 55A
Compass System.
REPORT: VB-1365
ISSUED: SEPTEMBER IS, 1988
9-82, 28 of 28
(