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File name RNU20IB001.pdf

S/M No: RNU20IB001 Refrigerator FRN-U20IB* FRS-U20IB* FRN-U20DB* FRN-U20EB* FRS-U20DB* FRS-U20EB* FRN-U20FB* FRN-U20GB* FRS-U20FB* FRS-U20GB* FRU-577I~ FRU-547D/E~ FRU-547F/G~ Caution : In this Manual, some parts can be changed for improving, their performance without notice in the parts list. So, if you need the latest parts information,please refer to PPL(Parts Price List) in Service Information Center - May, 2006 CONTENTS 1. WARNINGS AND PRECAUTIONS FOR SAFETY ----------------------------2 2. EXTERNAL VIEW 2-1. External Size ---------------------------------------------------3 2-2. Name of Each Parts ------------------------------------------6 2-3. Cold Air Circulation ----------------------------------------------8 3. SPECIFICATION --------------------------------------------------9 4. OPERATION AND FUNCTIONS --------------------------------------11 5. CIRCUIT OPERATION 5-1. Power Circuit Diagram --------------------------------------------31 5-2. Function of Each Sensor ------------------------------------------32 5-3. Relay Function --------------------------------------------------34 5-4. Fan Function ---------------------------------------------------36 6. DIAGRAM 6-1. Wiring Diagram --------------------------------------------------37 6-2. Circuit Diagram of Main PCB ---------------------------------------39 7. COMPONENT LOCATE VIEW -----------------------------------------43 8. HOW TO CHECK EACH PARTS 8-1. Hose Ice Maker Tube ---------------------------------------------45 8-2. Bracket Geared Motor ---------------------------------------------46 8-3. Dispenser Micro Switch --------------------------------------------47 8-4. Dispenser Solenoid Valve ------------------------------------------48 8-5. Main PCB ------------------------------------------------------49 8-6. Ice Maker ------------------------------------------------------51 9. TROUBLE DIAGNOSIS 9-1. Power Failure ----------------------------------------------------53 9-2. Freezer Compartment ---------------------------------------------54 9-3. Refrigerator Compartment ------------------------------------------60 9-4. Operation Noise of Refrigerator --------------------------------------65 9-5. Door -----------------------------------------------------------71 10. COOLING CYCLE HEAVY REPAIR 10-1. Summary of Heavy Repair ------------------------------------------72 10-2. Precaution during Heavy Repair --------------------------------------73 10-3. Practical Work for Heavy Repair --------------------------------------74 10-4. Standard Regulations for Heavy Repair --------------------------------76 10-5. Brazing Reference Drawing -----------------------------------------77 11. INSTALLATION GUIDE 11-1. Installation Preparation -------------------------------------------- 78 11-2. If the Refrigerator can not enter the Door ------------------------------ 79 11-3. Refrigerator Leveling & Door Adjustment -------------------------------80 11-4. Water Line Installation -------