Troubleshooting Procedures

TM 5-6350-264-14&P-10 NAVELEX EE 181-AA-OMI-110/E121 C-9412 T.O. 31S9-2FSS9-1-10 Table 5-2. Troubleshooting Procedures - Continued Trouble Probable cause Corrective action 3. Alarm Improper adjust- If alarm sounds after entry and before mode sounds ment of switch can be turned to ACCESS, or if during entry/exit alarm sounds after mode switch is turned entry/exit time delay to SECURE and before exit from secure time delay area, refer to TM5-6350-264-14/1, System Manual, for adjustment of entry or exit time delay. NOTE If Data Transmitter is installed, it must be removed to reach TB8-F through TB13-E. Remove screws that secure transmitter and carefully move it aside. Reinstall transmitter after tests. 4. No alarms a. Bad duress a. Set multimeter to dc volts and connect nega- intrusion tive lead to chassis. Connect positive or tamper lead to TP1 (brown) on PC board Al. switch Disconnect and then reconnect wire on circuitry. TB8-F-1. Repeat these steps for PC board A2 and TB9-A-1 through PC board A6 and TB13-E-1. Meter should indicate 0 volts with wire connected and 18.5 to 21 vdc with wire discon- nected. b. If meter indications are incorrect for any steps, replace the PC board(s) being tested. c. Connect positive meter lead to TP2 (red) on PC board A1. Disconnect and then reconnect wire on TB8-F-3. Repeat these steps for PC board A2 and TB9-A-3 through PC board A6 and TB13-E-3. Meter should indicate 0 volts with wire connected and 18.5 to 21 vdc with wire disconnected. d. If meter indications are incorrect for any steps, replace the PC board(s) being tested. (1) To remove PC board, turn off switch S1 on top of power supply. Place thumb or finger under board 5-52