与irs没关系
CT_MAR_21
Explanation:
During initialisation the Control Board DMS supervises
the +/-10V supply for the analog parts of the DMS
If a power error is detected the Control Board DMS sends this
message to the MAR
Possible cause:
- DMS-PCU D523, DMS-Control-Board D522,
DMS-Backplane, DMS-Converter-Boards, W515
Action:
1. Check LED on Control Board DMS D522
2. Check the supply voltage on connector W515 XP3 to DMS
Backplane:
+ 10 V Pin 4 & 5
+ 10 V RTN Pin 14 & 15
- 10 V Pin 7 & 8
- 10 V RTN Pin 12 & 13
3. Check DMS Converter boards for short cut
4. Replace DMS
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