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CHAPTER 3 System Messages
23-Y: MUX Clock Failure
This message displays when the MUX card has a clock failure in one of the dual systems.
Unit, MG, system number for MUX
card with a clock failure
Scan Data
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 b4 b3 b2 b1 b0
b7 b3 b2 b1 b0
1
2
b0-b1: Unit number where a clock failure occurred
b2: MG number where a clock failure occurred
b3: 0/1 = Clock failure in MUX System 0/
Clock failure in MUX System 1
b4: 0/1 = Faulty MUX is in ACT/
Faulty MUX is in STBY
1
Scan Data:Clock alarm information on the faulty MUX card
b1: 0/1 = -/FH failure for 2M PCM Highway
b2: 0/1 = -/CLK failure for 2M PCM Highway
b3: 0/1 = -/4M CLK failure for PM
2
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