PREPARATION FOR MAINTENANCE
TEST EQUIPMENT AND SPECIAL TOOLS
31. TEST EQUIPMENT REQUIRED.
35. TEST WIRING.
32. The following test equipment is required for mainten-
36. Test wiring to facilitate measurements between con-
ance of Control, Transponder Set C-6280(P)/APX, C-6280A
tact pins of the electrical connector on the transponder set
control may be fabricated by connecting a short length of
(P)/APX, C-6717/APX, and C-7483/APX:
wire to each contact of the MS24266R22B55S connector.
(Air Force, Navy) Multimeter AN/PSM-6, or equiva-
These wires should be identified with the contact designa-
lent, for making continuity checks.
tion and attached to a bank of terminals suitable for making
(Army) Multirneter ME-26/U, or equivalent, for making
Connector MS24266R22B55S, to facilitate checks.
37. POWER SOURCE.
33. TOOLS REQUIRED.
38. Other than voltage for checking the TEST and REPLY
indicator lights and for lighting the panel lamps, the trans-
3-4. Except for the special tools listed in this paragraph,
ponder set control requires no input power. A 28-volt DC
only common types of tools are required for maintenance
source is required for checking the indicator lights. Depend-
ing on the particular transponder set sontrol, a 5-volt, 6-volt,
Maintenance Allocation and Tools and Equipment List. The
or 28-volt DC source is required for panel lighting. The
following tools, or their equivalent, are required for extract-
C-6280(P)/APX and the C-6280A(P)/APX require either the
ing and replacing contact pins in the electrical connector:
6-volt or 28-volt DC source, depending on the voltage rating
Extraction Tool MS24256R20, or equivalent; Insertion Tool
MS24256A20, or equivalent; and Crimping Tool M1700A
of the panel lamps installed. The C-6717/APX and C-7483/
APX require the 5-volt DC source.
with MS3190 Head, or equivalent. In addition, the tool as
shown in Figure 3-1 may be fabricated and used for holding
the momentary test switches depressed, when necessary,