【正文】 rials and Consumables:Not applicable.Essential Replacement Parts:Not applicable.Illustrations:Not applicable.Reference Drawings:OD4/361/00752/0002(ED20639000) Electronic Destination Display (EDD). PISReference Manuals:Not applicable.Reference Forms:Not applicable.SAFETY PRECAUTIONS:ENSURE THAT ALL NECESSARY ELECTRICAL SAFETY PRECAUTIONS HAVE BEEN TAKEN WHEN CARRYING OUT THIS MAINTENANCE TASK AND ENSURE THAT THE DATA AND POWER CONNECTORS HAVE BEEN DISCONNECTED PRIOR TO REMOVING EQUIPMENT.Down Time: hourTeam Size: 1 personProcedure:Unfasten fixed bolt on electronic destination display panel casing by rotating a quarter of a turn.Check that the 110 V DC output from the surge protector board (121793022A) is being inputted to the power unit (VIMT0CU).Check that power unit output is exactly 5 V DC.If power status is normal, check that CPU board (121793001C) LED indicators D1 and D8 show power on status. If the LED indicates power off, or is constantly flashing, its status is abnormal.Check that LED indicators D2 and D3 keep flashing in munication with TMS.Check that the cable fastening to the LED power supplying busbar is secureFunction Test1 Power on the unit2 Select the test mode on the TMS display3 Check the LED scrolling line by line in red, green and amberMAINTENANCE WORK INSTRUCTIONTitle: Electronic Destination Display CPU Board Removal and ReplacementWork Instruction No.MWI3C1B220002Car Applicability:ABB1B2CC1XReason for Task: ReplacementSystem/Equipment Title: Electronic Destination DisplayManufacturer: Samik Electronics Ind. Co., Ltd.Type/Model No: EDD CPU BOARD (121793001C)Equipment Location: Above drivers seat on front right hand side of A carSpecial Tools and Facilities:Not applicable.Materials and Consumables:Not applicable.Essential Replacement Parts:EDD CPU Board (121793001C)Illustrations:Not applicable.Reference Drawings:OD4/36/00752/0008OD4/36/00752/0017Reference Manuals:Not applicable.Reference Forms:Not applicable.SAFETY PRECAUTIONS:ENSURE THAT ALL NECESSARY ELECTRICAL SAFETY PRECAUTIONS HAVE BEEN TAKEN WHEN CARRYING OUT THIS MAINTENANCE TASK AND ENSURE THAT THE DATA AND POWER CONNECTORS HAVE BEEN DISCONNECTED PRIOR TO REMOVING EQUIPMENT.Procedure:RemovalUnfasten fixed bolt on electronic destination display panel casing by rotating a quarter of a turn.Disconnect the CN1 connector to isolate the surge protector board from its 110 V DC input supply.Disconnect the CPU board power supply and data connectors.Remove the bolts securing the CPU board and remove the board.RefittingFasten the CPU board by inserting lockwashers and screwing in the fixing bolts.Reconnect the CPU board connectors according to the number indicated on each cable.Note:Assemble the connectors J11, J12 and J13 with care to ensure that they are facing in the correct direction.Reconnect connector CN1.Fasten fixed bolt on electronic destination display panel casing by rotating a quarter of a turn.MAINTENANCE WORK INSTRUCTIONTitle: Electronic Destination Display Surge Protector Board Removal and ReplacementWork Instruction No.MWI3C1B220003Car Applicability:ABB1B2CC1XReason for Task: ReplacementSystem/Equipment Title: Electronic Destination DisplayManufacturer: Samik Electronics Ind. Co., Ltd.Type/Model No: Surge Protector Board (121793022A)Equipment Location: Above drivers seat on front right hand side of A carSpecial Tools and Facilities:Not applicable.Materials and Consumables:Not applicable.Essential Replacement Parts:Surge Protector Board (121793022A)Illustrations:Not applicable.Reference Drawings:OD4/361/00752/0014OD4/361/00752/0023Reference Manuals:Not applicable.Reference Forms:Not applicable.SAFETY PRECAUTIONS:ENSURE THAT ALL NECESSARY ELECTRICAL SAFETY PRECAUTIONS HAVE BEEN TAKEN WHEN CARRYING OUT THIS MAINTENANCE TASK AND ENSURE THAT THE DATA AND POWER CONNECTORS HAVE BEEN DISCONNECTED PRIOR TO REMOVING EQUIPMENT.Procedure :Removal1 Unfasten fixed bolt on electronic destination display panel casing by rotating a quarter of a turn.2 Disconnect the CN1 connector to isolate the surge protector board from its 110 V DC input supply.3 Disconnect the surge protector board (121793022A) output CN2 and CN3 connectors.4 Remove the bolts securing the surge protector board and remove the board.RefittingFasten the surge protector board (121793022A) by inserting lockwashers and screwing in the fixing bolts.Connect the female connector to the male connector.Fasten fixed bolt on electronic destination display panel casing by rotating a quarter of a turn.Note:Take care when reconnecting the connectors not to damage the connector pins by forcing the connectors together. The connectors are as follows:Female 5 pin for 110 V DC input.Female 3 pin 110 V DC output (output to surge protector circuit).Female 2 pin 5 V DC output.MAINTENANCE WORK INSTRUCTIONTitle: Electronic Destination Display Inch Indicator Board Removal and ReplacementWork Instruction No.MWI3C1B220004Car Applicability:ABB1B2CC1XReason for Task: ReplacementSystem/Equipment Title: Electronic Destination DisplayManufacturer: Samik Electronics Ind. Co., Ltd.Type/Model No: Inch Indicator BoardEquipment Location: Above drivers seat on front right hand side of A carSpecial Tools and Facilities:Not applicable.Materials and Consumables:Not applicable.Essential Replacement Parts: Inch Indicate Board (121792993)Illustrations:Not applicable.Reference Drawings:OD4/361/00752/0006OD4/361/00752/0015Reference Manuals:Not applicable.Reference Forms:Not applicable.SAFETY PRECAUTIONS:ENSURE THAT ALL NECESSARY ELECTRICAL SAFETY PRECAUTIONS HAVE BEEN TAKEN WHEN CARRYING OUT THIS