Figure 9-3. Checkout Test Connections

T.O. 12P4-2APX-192

NAVAIR 16-35TS1843-1

TM 11-6625-1646-25

tested are identified throughout the checkout procedure. Refer

9-10. REPAIR AND REPLACEMENT. Repair consists of

to section IV for test equipment required for checkout and

removal and replacement of faulty components isolated by

section VIII for test point locations and instructions to gain

routine troubleshooting procedures. No special repair

access to test points. Checkout the transponder set test set

instructions are required other than those used by experienced

electronics technicians. Following component removal and

replacement, replace potting compound, where required, using

General Electric RTV 118 or equivalent. Following repair

9-14. TROUBLESHOOTING. Troubleshooting procedures are

perform checkout procedures per paragraph 9-13 to ensure

used to isolate a fault to a replaceable component. Checkout

the transponder set test set is operating properly.

procedures may be used as an aid to isolate a fault to a circuit.

Refer to section V for theory of operation data to determine

circuit dependencies when troubleshooting using checkout

9-11. ASSEMBLY. Assembly of the transponder set test set

procedure results. Refer to section IV for test equipment

is the reverse of disassembly procedures.

required for troubleshooting.

component locations on modules A2 through A4. See figures

9-12. TESTING.

9-6 through 9-9 for component locations on modules AlA1A2

through AlAlA5 respectively. Troubleshoot the transponder set

9-13. CHECKOUT. Transponder set test set simulator

test set per table 9-2.

checkout is used as an aid to troubleshooting and to ensure

the unit is operating properly following repair. Circuit functions

Figure 9-3. Checkout Test Connections

9-3