Cessna T303 Installation, Service & Parts Manual page 147

Avionic Installations Service/Parts Manual
INCANDESCENT LIGHTED AUDIO CONTROL PANEL INSTALLATIONS
VIEW LOOKING AT BOTTOM
SIDE OF PRINTED CIRCUIT BOARD
Detail C
(REQUIRED WITH 200A AND 300A
AUTOPILOT ONLY)
Detail B (VIEW
LOOKING AT
BOTTOM SIDE
OF P/C BOARD)
MODI
F
I
C
ATION
NOTES:
1 Potentiometers to be adjtusted to middle of adjustment range.
2. CAUTION Note diode direction onprinted circuit board. Damage to components or electrical
system may result if improperly installed.
3. Solder connections
to be made with SN83 solder using soldering iron with maximum tip tempe
rature
4. Clean solder connections immediately after soldering with stiff bristle (non-metallic) brush and
small amounts of trichlorathans 1,1,1, 1 or Methyl Ethyl keytone, using care to avoid removal
of markings on com ponents.
5 If an
autopilot
iS to be installed, items 40, 41, 42 & 43 must be installed as shown in order to
complete autopilot system.
NOTE
After
item
41 has been
installed
and
circuit
board assembly is
cleaned, punch out indented hole on the surface of CLARE
RELAYS.
6 Add 22 G A jumper
wire
to solder
Pads
between pins 7& 8 only when a 200A or 300A ( T ypes
AF-295B or AF-395A) autopilot is installed (See Detail C).
7 If the second XMTR is to be a SUNAIR (ASB-125) SSB HF XCVR, a GA jumper wire must be
added to the XMTR SELECTOR SWITCHas shown.
8 Ifa DME is to be installed, item 44 (SPKR/PHN SELECTOR SWITCH) must be added to the
P/C board.
INSTALLATION A
AUDIO CONTROL PANEL WITH INCANDESCENT LIGHTING AND WITHOUT 400 MARKER
BEACON AND WITHOUT INTERPHONE INTERCOM - ALL 1982 MODELS AND SOME EARLY 1983 EXPORTED
MODELS NOT EQUIPPED WITH 1983 RECTILINEAR CD INDICATORS (SHEET 2 OF 2)
Figure 4-1. Incandescent Lighted Audio Control Panel Installations For Use With One or Two Radio Transmitters
Only - All 1982 Models and Some Early 1983 Exported Models Not Equipped With 1983 Rectilinear CD
Indicators (Sheet 3 of 12)
4-4
F)