Honeywell TA3840, Руководство по обслуживанию

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Doc No: MM5008E – Revision 6 – ENG Data Processing Racks
TA3840 Maintenance Manual
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TA3840S CPU board (optional)
3. TROUBLESHOOTING GUIDE
In case of system failure, the first rule to be applied consists in eliminating any possible cause
originating outside the system itself. For this, the following preliminary checks must be carried out.
●
Check the condition of the system electrical protection.
●
Check the presence of the 24 Vdc power supply on the terminal block of the TA3840C.
●
Check the presence of the main supply on the terminal block of the TA3840S.
●
Check the connection of the cables and their condition.
Where the preliminary checks did not provide a solution to the problem, each of the system racks
will need to be checked following the instructions in the table below.
When the cause of an incident is a blown out fuse, it is necessary to search the
reason of the possible short circuit.
The voltage marked next to the terminal block must be the same as that of the
mains system.
EPROM even EPROM odd