FLIGHT COMPARTMENT
INSTRUMENT PANEL LIGHTS
The instrument panel lights are controlled by transistorized dimmer control unit and protected by a 5 amp
circuit breaker located on the right center instrument panel. There are two control knobs. One is for panel
lights and the other for radio lights.
DIMMER CONTROL ASSEMBLY
REMOVAL OF DIMMER CONTROL ASSEMBLY
1. Remove two screws holding switch panel to face of instrument panel.
2. Gain access to area behind instrument panel and immediately above switch panel.
3. Remove four screws attaching upper part of switch panel to instrument panel.
4. Remove electrical plug from switch panel.
5. Remove switch panel.
—NOTE—
Mark all wires before disconnecting to facilitate reinstallation.
6. Remove wires from back of dimmer switch.
7. Loosen jam nut holding dimmer switch to dimmer switch clip.
8. Slide dimmer switch out.
9. Remove dimmer switch control knob.
INSTALLATION OF DIMMER CONTROL ASSEMBLY
1. Attach dimmer switch control knob to dimmer switch.
2. Place dimmer switch on dimmer switch clip and tighten jam nut.
3. Solder wires to back of dimmer switch.
4. Place switch panel in instrument panel.
S. Attach electrical plug.
6. Install six retaining screws in switch panel.
ANNUNCIATOR PANEL
DESCRIPTION AND OPERATION
The annunciator panel is a small cluster of lights that warn of malfunctions. A malfunction is identified by
illumination of an individual warning light. There are three amber warning lights and a pushbutton test switch.
Power is supplied from the bus bar through a 5 amp fuse to the lights.
The VAC warning light is controlled by a vacuum sensor switch located on the firewall and is attached to
the vacuum regulator. The sensor switch will activate when vacuum pressure is below 3.5 in. Hg.
33 - 13 - 00
Page 33 - 04
Reissued: August 1, 1986
2D1
PIPER AIRCRAFT
PA-28-236
MAINTENANCE MANUAL
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