E2 (Zero Crossing Detec�On Error Diagnosis And Solu�On) - Roland FAVORITE ON-OFF Series Service Manual

5.4 E2 (Zero crossing detec�on error diagnosis and solu�on)
Descrip�on: When PCB does not receive zero crossing signal feedback for 4 minutes or the zero crossing signal �me
interval is abnormal.
Recommended parts to prepare:
• Connec�on mistake
• PCB faulty
Troubleshoo�ng and repair:
Check the connec�ons and
Indoor main PCB is defec�ve. Replace
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power supply.
Is it normal? NO
YES
indoor main PCB.
Correct the connec�ons. Turn on the
unit when the power supply is good.