Simplex No Audio when Loss of AC Power

Goal No Audio when Loss of AC Power on the 2001 Audio Power Amplifier 2001 2120 Audio 2001 6001 Audio Power Amplifier 635 140 2001 6002 Audio Power Amplifier 635 139 2001 6003 Audio Power Amplifier 635 102 2001 6004 Audio Power Amplifier 635 119 2001 6014 Audio Power Amplifier 635 231 2001 6062 Single Audio Power Amplifier 635 352 2001 6063 Dual Audio Power Amplifier 635 353 2001 6066 Single with 4 Place Card Rack Audio Power Amplifier 635 355 562 125 Amplifier Monitor Board 562 159 Amplifier Board 562 546 Amplifier Board 562 137 Power Supply Board Battery Backup No Battery Backup Audio System has No Power No Signal Power No AC Power Input There are 2001 series amplifiers also used in 2120 system configurations The 2001 2120 Audio Amplifier is normally powered off AC to the 562 137 Power Supply If the Supply is not connected to battery backup then the amplifier will not work when the AC power is Check 562 137 Power Supply board terminal TB1 2 on the for the battery positive and TB1 7 2001 2120 Amplifier Battery Backup configuration was designed conserve battery power during AC loss A relay was connected between the battery positive and the amplifier power supply TB1 2 relay would pick in alarm condition allowing power to the audio amplifier