2-306.16Change 4TM 9-2350-267-20cWARNINGTurn crew AFES T/A panel Maintenance switch tovertical position before disconnecting any electrical wiringharnesses. Failure to comply may result in discharge ofextinguisher cylinders and injury to personnel.Disconnect harness 12352353 connectors from OFSAs. Place red lead ofmultimeter in socket A (wire 783A, 783B, 783C, or 783D) of the fourconnectors and ground black lead. With the aid of an assistant, turnMASTER switch ON (TM 9-2350-267-10), and turn crew AFES T/A panelMaintenance switch to horizontal position. Check for 24 ± 3 vdc. TurnMASTER switch OFF (TM 9-2350-287-10), and turn crew AFES T/A panelMaintenance switch to vertical position. If voltage is indicated at theOFSA's, replace defective OFSA(s) (p 14-34). If voltage is not indicated, goto step D.D. Disconnect harness 12352353 connector from the standard control electronicamplifier (SCEA). Check for continuity between:1.2.3.4.Socket A of OFSA connector W1P2 and pin A of SCEAconnector (wire 783A).Socket A of OFSA connector W1p2 and pin A of SCEAconnector (wire 783A).Socket A of OFSA connector W1P4 and pin T of SCEAconnector (wire 783C).Socket A of OFSA connector W1P5 and pin B of SCEAconnector (wire 783 D).If continuity is indicated on all four wires, replace standard control electronicamplifier (SCEA) (p 14-40). Verify problem is solved. If continuity is notindicated, replace wire harness 12352353 (p 14-40.2). Verify problem issolved.
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