OKIFAX 5700/5900 4 - 154.3.12 Main Board1. Remove the shield plate by unscrewingsix screws.2. Unscrew four screws and disconnect twoconnector cables, then slide the mainboard for removal.4.3.13 Contact Assembly and High-/Low-voltage Power SupplyBoards1. Remove the high-/low-voltage powersupply boards by unscrewing sevenscrews.Caution: Remove both boards at thesame time. Unscrew oneground screw and remove theground cable from the AC inlet.2. Disconnect two connectors to separatetwo boards.3. Remove the contact assembly.Caution: Never touch the pattern on thelow-voltage board.Shield plateLow-voltage power supply boardContact assemblyHigh-voltagepower supply board
