– 249 –CHAPTER 3 System Messages4-S: MUX Ready FailureThis message displays when the MUX (PH-PC36) card has a Ready Failure in one of the dual systems. Whenthe card is not ready for service because of the failure or because the card is not mounted properly, the systemcreates this message.Unit and MG number for MUX cardwith ready faultMG and system number for faultyMUX cardReference: See Unit Fault - ACT-Side MUX Card Is Faulty and System Has Changed Over for the repairprocedure.Default Alarm Default Grade Grade Modified Lamp ModifiedMN 31: XXXX 0000 0000 0000 2: 0000 0000 0000 0000 3: 0000 0000 0000 00004: 0000 0000 0000 0000 5: 0000 0000 0000 0000 6: 0000 0000 0000 00007: 0000 0000 0000 0000 8: 0000 0000 0000 0000 9: 0000 0000 0000 0000b7 b6 b5 b4 b3 b2 b1 b0b7 b2 b1 b01 2b0: 0/1 = -/MUX ready fault in even-numbered MG, Unit 0b1: 0/1 = -/MUX ready fault in even-numbered MG, Unit 1b2: 0/1 = -/MUX ready fault in even-numbered MG, Unit 2b3: 0/1 = -/MUX ready fault in even-numbered MG, Unit 3b4: 0/1 = -/MUX ready fault in odd-numbered MG, Unit 0b5: 0/1 = -/MUX ready fault in odd-numbered MG, Unit 1b6: 0/1 = -/MUX ready fault in odd-numbered MG, Unit 2b7: 0/1 = -/MUX ready fault in odd-numbered MG, Unit 31b0: MG number for faulty MUX card0/1 = Even number/Odd numberb1: 0/1 = Ready failure in MUX System 0/Ready failure in MUX System 1b2: ACT or STBY status of faulty MUX.0/1 = ACT/STBY2