Cirrus SR22 Pilot Operating Handbook page 286

Section 7 Cirrus Design
Systems Description SR22
Cell Phone Input Jack
One 2.5 mm cell phone jack is located on the front of the audio panel
and is distributed by selecting the Entertainment button (shown as a
phone and music-note symbol) on the audio panel. Volume is
controlled by the volume selector on the audio panel
Avionics Cooling Fans
Electric fans provide forced ambient-air cooling for the Integrated
Avionics System. A fan located forward of the instrument panel
provides ambient air cooling directly to the Integrated Avionics Units.
Two additional fans blow air directly onto the heat sinks located on the
forward sides of the PFD and MFD.
28 VDC for MFD and Transponder Fan operation is supplied through
the 5-amp AVIONICS FAN 1 circuit breaker on NON-ESSENTIAL
BUS. 28 VDC for PFD and Integrated Avionics Unit Fan operation is
supplied through the 5-amp AVIONICS FAN 2 circuit breaker on MAIN
BUS 2.
7-100 P/N 13772-004
Revision 1