Page 6.3
NO
Do all DC voltages reach the
display?
Do all DC voltages reach the
alternator interface board?
Are all DC voltages present at
the output of the alternator
interface board?
Replace the CPU board
Replace cable BK-6
Replace the alternator
interface board
Replace cable BK-1
YES
NO
NO
YES
NO
YES
4
5
6
Are DC voltages output by the
power supply correct?
3
Replace the power
supply
YES
A
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) Disconnect connector CN1 from the power supply. Place the tester probes on pins 4 and 6 of
the connector. The measured voltage should be approximately 220 VAC or 110 VAC
depending on the mains electricity supply.
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