RUNRACE : Service & Maintenance Manual - rev. 2.0
Page 6.8
Is the v oltage at the CN5 patch
connector correct?
Replace RN-3Q cable
NO
4
YES
A
Is the v oltage at the relay correct?
Check the CN5-CN6 patch
connector and/or replace
the RN-4Q cable
NO
5
YES
6
Is the relay contact close?
Replace the relay
NO
YES
7
Is the v oltage at the input of the
inv erter correct?
Replace the inv erter
NO
YES
Check the mains cables
going to the inv erter
Follow the procedure step by step to correctly diagnose the problem. Take particular care with the
checks highlighted by circled numbers, which are described in detail below:
(1)
Place the tester probes between pins 1 and 3 of the CPU board. The measured voltage should
be +12Vdc.
(2)
As for point (1) but on pin 1 and 4 of the emergency button.
(3)
As for point (1) but on patch connector CN9.
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