Troubleshooting 7 - 22 OKIFAX 5300/5600Service Manual, P/N 592783017.2.17 Power Supply UnitStartSee ACTION 1.NoYesPrimary Circuit Protection.F2 blows when SW isturned ON?Turn on AC power.See ACTION 2.NoYesSecondary Circuit Protection.F3 blows when SW isturned ON?See ACTION 3.NoYesLow-voltage Selection.Is 30V output voltagelower or higher than thespecified value?NoYesNo 30V output is provided.See ACTION 3.YesAre +/-8 V output voltageshigher or lower thanthe specified values?See ACTION 4.1