XZAC4074 Service Manual 1-25
1.11.2 Power supply control
FAULT ANALYSIS:
• No power
• Sudden power off
FLOWCHART:
To make the following checks, raise and lock the rear cover as described in Chapter 3.
• Check that there is a difference in potential of +5Vsbc between the terminals of the purple and black
wires, as shown in the figure below:
Figure 1-21
System power-on
Power supply on
Power supply OK
See procedure
NO
YES
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