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CHAPTER 3 System Messages
4-T: Both MUX Ready Failure
This message displays when the MUX card has a Ready Failure in both of the dual systems. When the card is
not ready for service because of the failure or because the card is not mounted properly, the system creates this
system message.
Unit and MG number for MUX card
with the ready fault
MG and system number for faulty
MUX card
Note 1: Though this message indicates the Ready Failure in both systems, the information displayed here only
relates to the ACT-side MUX status. (Two messages are not displayed separately.)
Note 2: Fixed as 0 (=ACT) Note 1.
Reference: See Unit Fault - ACT-Side MUX Card Is Faulty and System Has Changed Over for the repair
procedure.
Default Alarm Default Grade Grade Modified Lamp Modified
MN 3
1: XXXX 0000 0000 0000 2: 0000 0000 0000 0000 3: 0000 0000 0000 0000
4: 0000 0000 0000 0000 5: 0000 0000 0000 0000 6: 0000 0000 0000 0000
7: 0000 0000 0000 0000 8: 0000 0000 0000 0000 9: 0000 0000 0000 0000
b7 b6 b5 b4 b3 b2 b1 b0
b7 b2 b1 b0
1 2
b0: 0/1 = -/MUX ready fault in even-numbered MG, Unit 0
b1: 0/1 = -/MUX ready fault in even-numbered MG, Unit 1
b2: 0/1 = -/MUX ready fault in even-numbered MG, Unit 2
b3: 0/1 = -/MUX ready fault in even-numbered MG, Unit 3
b4: 0/1 = -/MUX ready fault in odd-numbered MG, Unit 0
b5: 0/1 = -/MUX ready fault in odd-numbered MG, Unit 1
b6: 0/1 = -/MUX ready fault in odd-numbered MG, Unit 2
b7: 0/1 = -/MUX ready fault in odd-numbered MG, Unit 3
1
b0: MG number for faulty MUX card
0/1 = Even number/Odd number
b1: 0/1 = Ready failure in MUX System 0/Ready failure in MUX System
1 Note 1
b2: ACT or STBY status of the faulty MUX Note 2
0/1 = ACT/STBY
2
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