Page 2 - IMPORTANT SAFETY NOTICE; Technical Service Guide; WARNING
2 IMPORTANT SAFETY NOTICE The service guide is for service men with adequate backgrounds ofelectrical, electronic, and mechanical experience. Any attempt to repaira major appliance may result in personal injury and property damage.The manufacturer or dealer cannot be responsible for the interpretati...
Page 3 - Contents
3 Contents 1. Safety instruction on services ······························ 4 2. Warranty information ··································· 9 3. Mechanical Disassembly ································ 14 4. Circuit Diagram ······································ 15 5. Operation Principles By Parts Of C...
Page 4 - Safety Instructions on Service
1. Safety Instructions on Service ● Unplug the refrigerator before making any repair or any replacement. Avoid the electric shock. ● Use the rated components on the replacement. Check the correct model number, rated voltage, rated current, operating temperature and so on. ● On repair, be sure that t...
Page 5 - Warranty information; LIMITED WARRANTY TO ORIGINAL PURCHASER; SAMSUNG REFRIGERATOR
5 2. Warranty information LIMITED WARRANTY TO ORIGINAL PURCHASER SAMSUNG REFRIGERATOR This SAMSUNG brand product, as supplied and distributed by Samsung Electronics America, Inc. (SAMSUNG) and delivered new, in the original carton to the original consumer purchaser, is warranted by SAMSUNG against m...
Page 6 - Mechanical Disassembly
6 3-1) Refrigerator Disassembly 3-2) Freezer Disassembly 3-3) Machine Compartment Disassembly 3. Mechanical Disassembly Control Panel ········································ 7 Door Handle ········································· 7 Door Gasket ········································· 7 Refrigerato...
Page 7 - Control Panel
7 3. Mechanical Disassembly 1. Insert a flat-blade screwdriver on the slot as shown, and unlock the tabs. 2. Disconnect the wire connector. The door handles allow access into the refrigerator and freezer. They are front mounted with Phillipshead screws. 1. With a small flat-blade screwdriver, press ...
Page 8 - Mechanical Disassembly; Gallon Door Bin
8 Mechanical Disassembly The refrigerator light is located in the upper portion of refrigerator. 1. Pull the tip on the cover. These shelves allow the storage of larger items and pull out for easy access. 1. Pull the shelf out as far as it goes.2. Lift it up and remove it. Drawers are designed for s...
Page 9 - Damper in the Refrigerator; and pulling the cover down.; Twin cool in the Refrigerator
9 Mechanical Disassembly Damper in the Refrigerator 1. Pull out the screw cap and remove the screw.2. Remove the lamp cover by unlocking the tabs and pulling the cover down. 3. Remove the screw at the cover damper.4. Take off sensor and lamp wire connector located on the upper liner. 6. Remove the d...
Page 10 - Door Bin in Freezer; Freezer Shelf
10 The door bins allow storage of perishable items.1. Push the bin up and slide it out. This switch is located in the left-hand portion of the freezer and sends a signal to the processor. 1. With a small flat-blade screwdriver, unlock the locking tabs and pull the switch out until the wire connector...
Page 11 - Auger Motor Case
11 Mechanical Disassembly The ice dispenser is located in the upper portion of the freezer. This assembly stores ice made by theicemaker and dispenses ice. 1. Lift the ice bucket up ① and slide out the ice dispenser assembly ② . The ice maker is located inside of the ice dispenser assembly. 1. Remov...
Page 12 - Evaporator Fan Motor
12 The freezer light is located in the bottom of the auger motor case. The light is covered by an opaquecover. 1. Remove the screw and the light cover. The evaporator fan is located in the middle rear of refrigerator. This fan circulates cold air in therefrigerator. 1. Remove the fan spring, and tha...
Page 13 - Evaporator in Freezer; Freezer Thermistor
13 Evaporator is located in the bottom of freezer to produce cold air driven across the evaporator coils. 1. Take off the ductwork in Freezer.2. Disconnect the wire connector (Heater, Bimental, and Thermistor). 3. Desolder the inlet and outlet tubes.4. Remove the evaporator.5. Take the same steps to...
Page 14 - Water Solenoids
14 1. Disconnect the power cord of the refrigerator.2. Remove the fixed screws (6) of compressor cover. 3. Slide up and take off the compressor cover to see the machine compartment. 4. Remove screw (2) on the cover. When the solenoids receive a signal from the micro- processor, they supply water to ...
Page 16 - OPERATION PRINCIPLES BY PARTS OF CIRCUIT; Terminal; and
16 5. OPERATION PRINCIPLES BY PARTS OF CIRCUIT 5-1) POWER 5-2) OSCILLATION CIRCUIT Terminal Oscillation Frequency ● Vcc(DC 5V) << BLDC +12V(DC 12V) MICOM POWER AND SENSORS BLDC MOTOR POWER(NOT USE) RELAY,PANEL POWER ● When turned on, rectified AC voltage which is stepped down on 2nd transforme...
Page 17 - OPERATION PRINCIPLES BY PARTS OF CIRCUIT; compared to Vcc
17 OPERATION PRINCIPLES BY PARTS OF CIRCUIT 5-3) RESET CIRCUIT 5-4) EEPROM DETECTION CIRCUIT ● RESET Circuit allows the whole program to go back to the initial setting by initializing parts such as the RAM in MICOM with the power supply into MICOM or with an instant power failure. Upon the power sup...
Page 20 - Temp to Resistance of Sensor & MICOM PORT Voltage
20 OPERATION PRINCIPLES BY PARTS OF CIRCUIT Temp to Resistance of Sensor & MICOM PORT Voltage Sensor CHIP : PX41C Standard Temp. -50 °F/-45.6 °C -49 °F/-45.0 °C -48 °F/-44.4 °C -47°F/-43.9 °C -46 °F/-43.3 °C -45 °F/-42.8 °C -44 °F/-42.2 °C -43°F/-41.7 °C -42°F/-41.1 °C -41°F/-40.6 °C -40°F/-40.0...
Page 21 - When Grid #6 is output, this signal goes through PCB resistance 10
21 OPERATION PRINCIPLES BY PARTS OF CIRCUIT 5-7) DAMPER CIRCUIT 5-8) DISPLAY Circuit 1) The temperature of R-room is controlled by opening and closing of damper with stepping motor, supplying & blocking cold air. 2) TA7774P (IC07) operates the damper. TA7774P is the driver IC only for step motor...
Page 22 - ) DISPLAY OPERATION
22 OPERATION PRINCIPLES BY PARTS OF CIRCUIT 2) DISPLAY OPERATION Like the signal diagram below, Micom sends “ high ” signal through MICOM 6 terminals of NO #1 → 2 → 3 → 4 → 5 → 6 for 2ms every 12ms. This signal goes to output terminal via input terminal of IC5 (KID65783AP or TD62783AP). Output wave ...
Page 23 - * Q710 is connected to the F door switch to
23 OPERATION PRINCIPLES BY PARTS OF CIRCUIT 5-9) Load Control Circuit 1) Main PCB processes most of the load control for electronic refrigerators.2) Compressor, F-Room, defrost heater, and other functions are controlled with relay.3) For example, to operate compressor, MICOM 29 pin outputs high (5V)...
Page 27 - Illustrated Parts Catalog.
2 7 Illustrated Parts Catalog. 6-2) Refrigerator 1 8 17 13 14 15 11 12 9 10 8-1 8-3 8-4 8-5 8-7 8-2 8-6 2 2-1 2-2 3 4 5 6 7 16 3-2 4-2 3-1 4-1 11-1 11-2 12-1 12-2 6-1 7-1 6-3 7-3 6-2 7-2
Page 31 - Appendix; LOAD
3 1 Appendix Ⅰ Ⅰ (Reference for circuit diagnostics) Ref.1) Measure Load Terminals LOAD TERMINALS PCB CASE VALUE DEFECTS OTHERS DISPENSER HEATER 1) DEFROST HEATER2) ICE PIPE HEATER CN72 ① & ③ CN71 ⑪ & ③ 0 Ω ∞Ω 0 Ω ∞Ω THERMAL FUSE, HEATER, WIRE SHORT THERMAL BIMETAL, HEATER, WIRE CUT HEATER, ...
Page 33 - ELECTRONICS
272, Oseon-Dong, Kwangsan-Gu,Kwangju-City, Korea, 506-253 TEL : 82-62-950-6810, 6811FAX : 82-62-950-6829 ELECTRONICS © Samsung Electronics Co., Ltd. Refrigerator Division 2004. 2Printed in Korea Code : DA82-00 - This Service Manual is a property of Samsung Electronics Co., Ltd. Any unauthorized use ...
