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Hello everybody,
Time to time There are two diagnostic alarms on Mark V TMR control panel:
C 3784 Voter mismatch, <S> SVL
C 4045 Voter mismatch, <T> SVL
C 3523 Voter mismatch, <R> SVL
C 3783 Voter mismatch, <S> DV
C 3522 Voter mismatch, <R> DV
C 4044 Voter mismatch, <T> DV
For example, SVL can appears for <S> and then disappears. Then it can appears for <T> and then disappears. Never it comes simultaneously for two or three controllers at the same time.
The same situation for DV.
I suppose that there are not any problem with PTBA, TCEB or <X>, <Y> and <Z> TCEA cards as all three controllers <R>, <S> and <T> have the same behaviour. Also, TCEB and one TCEA card were replaced few weeks ago due their failure. The same alarms were present before cards replacement as well.
All ribbon cables are ok and their contact/connection as well.
I didn't find any description for these Diagnostic alarms numbers in the HELP_QD file (what I have).
I have misgivings about the 125 VDC power supply quality only.
With oscilloscope I can see that there are some needle-shaped spikes with amplitude 5-9 Volts and frequency 100 Hz on 125 VDC (measured between positive and negative).
If someone have any ideas on it please advise.
With the best regards,
Ivan.
Time to time There are two diagnostic alarms on Mark V TMR control panel:
C 3784 Voter mismatch, <S> SVL
C 4045 Voter mismatch, <T> SVL
C 3523 Voter mismatch, <R> SVL
C 3783 Voter mismatch, <S> DV
C 3522 Voter mismatch, <R> DV
C 4044 Voter mismatch, <T> DV
For example, SVL can appears for <S> and then disappears. Then it can appears for <T> and then disappears. Never it comes simultaneously for two or three controllers at the same time.
The same situation for DV.
I suppose that there are not any problem with PTBA, TCEB or <X>, <Y> and <Z> TCEA cards as all three controllers <R>, <S> and <T> have the same behaviour. Also, TCEB and one TCEA card were replaced few weeks ago due their failure. The same alarms were present before cards replacement as well.
All ribbon cables are ok and their contact/connection as well.
I didn't find any description for these Diagnostic alarms numbers in the HELP_QD file (what I have).
I have misgivings about the 125 VDC power supply quality only.
With oscilloscope I can see that there are some needle-shaped spikes with amplitude 5-9 Volts and frequency 100 Hz on 125 VDC (measured between positive and negative).
If someone have any ideas on it please advise.
With the best regards,
Ivan.