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PROPRIETARY AND CONFIDENTIAL DRAFT 28/Feb/03

                   2.26  No LEDs are Lit on the Local Alarm
                   Chapter 2: Troubleshooting Procedures

                   2.26 No LEDs are Lit on the Local Alarm



                                 SHOCK HAZARD:
                                 The potential for electric shock exists with electrical equipment. Use
                                 caution when troubleshooting any electrical device.

                                 1. The building supply breaker is in the ON position.
                                     Yes   No
                                      ↓     → Turn the building supply breaker to the ON position. If this
                                                solves the problem, go to “Final Actions” on page 2-7.
                                                Otherwise, go to step 2.


                                 2. The Local Alarm’s power supply switch is in the ON position.
                                     Yes   No
                                      ↓     → Turn the power supply switch to the ON position. If this solves
                                                the problem, go to “Final Actions” on page 2-7. Otherwise, go to
                                                step 3.

                                 3. The power supply’s fuse is intact.
                                     Yes   No
                                      ↓     → Replace the power supply’s fuse (refer to procedure 4.15 on page
                                                4-40). If this solves the problem, go to “Final Actions” on page
                                                2-7. Otherwise, go to step 4.

                                 4. The power supply cable is connected to the Local Alarm P.C. board.
                                     Yes   No
                                      ↓     → Connect the power supply cable to the Local Alarm P.C. board
                                                (refer to procedure 4.12 on page 4-34). If this solves the
                                                problem, go to “Final Actions” on page 2-7. Otherwise, go to
                                                step 5.

                                 5. The facility’s supply voltage is connected to the alarm’s terminal block.
                                     Yes   No
                                      ↓     → Connect the facility’s supply to the alarm’s terminal block. For
                                                the wiring diagram, refer to FO 3-1 at the rear of this document.
                                                If this solves the problem, go to “Final Actions” on page 2-7.
                                                Otherwise, go to step 6.















                   Page 2 - 34           MedPlus TotalAlert™ Alarm Network Operation and Maintenance Manual (man291ra)
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