Service Manual
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Troubleshooting 7. Specifications 3. Operating Instructions 4. Disassembly and Reassembly 5. Exploded Views and Parts List 8. Precaution CONTENTS 2. PCB Diagrams 9. Alignment and Adjustments 6. Schematic Diagrams MICROWAVE OVEN MW5480W / MW5481G MW5380W / MW5381G SERVICE Manual MICROWAVE OVEN SEA One Minute + Popcorn Frozen Dinner Fresh Vegetable Diet Cook Potato Frozen Breakfast Auto Defrost Auto Reheat 12 3 456 789 0 Power Level More/Less Clock Auto Start Pause Cancel Hold Timer Start 1.
Troubleshooting 7. Specifications 3. Operating Instructions 4. Disassembly and Reassembly 5. Exploded Views and Parts List 8. Precaution CONTENTS 2. PCB Diagrams 9. Alignment and Adjustments 6. Schematic Diagrams MICROWAVE OVEN MW5480W / MW5481G MW5380W / MW5381G SERVICE Manual MICROWAVE OVEN SEA One Minute + Popcorn Frozen Dinner Fresh Vegetable Diet Cook Potato Frozen Breakfast Auto Defrost Auto Reheat 12 3 456 789 0 Power Level More/Less Clock Auto Start Pause Cancel Hold Timer Start 1.
Service Manual
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... hinges and latches, (5) evidence of dropping or abuse. (c) Before turning on microwave power for any service test or inspection within the microwave generating compartments, check the magnetron, wave guide or transmission line, and cavity for proper alignment, integrity, and connections. (d) Any defective or misadjusted components in the interlock, monitor, door seal, and microwave generation and transmission systems shall be repaired, replaced, or adjusted...
... hinges and latches, (5) evidence of dropping or abuse. (c) Before turning on microwave power for any service test or inspection within the microwave generating compartments, check the magnetron, wave guide or transmission line, and cavity for proper alignment, integrity, and connections. (d) Any defective or misadjusted components in the interlock, monitor, door seal, and microwave generation and transmission systems shall be repaired, replaced, or adjusted...
Service Manual
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... oven operates with the wiring diagram. Make sure that are specified in the drawings and parts lists of the built-in accordance with the door open : Instruct the user not to operate the oven and contact the manufacturer and the center for the Interlock switches, described above. Be sure that there are no cost to owner and try to remove or reinstall any possible radiation hazard, replace parts...
... oven operates with the wiring diagram. Make sure that are specified in the drawings and parts lists of the built-in accordance with the door open : Instruct the user not to operate the oven and contact the manufacturer and the center for the Interlock switches, described above. Be sure that there are no cost to owner and try to remove or reinstall any possible radiation hazard, replace parts...
Service Manual
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... the circuit diagram by close-tolerance, safety-related components and adjustments. Before touching any cook cycle. If the high voltage exceeds the specified limits, check each of the magnetron. Discharging the High Voltage Capacitor 1-2 Samsung Electronics A replacement part that the power is maintained within specified limits by shading, or . 18. High Voltage Warning Do not attempt to the oven chassis. (Use...
... the circuit diagram by close-tolerance, safety-related components and adjustments. Before touching any cook cycle. If the high voltage exceeds the specified limits, check each of the magnetron. Discharging the High Voltage Capacitor 1-2 Samsung Electronics A replacement part that the power is maintained within specified limits by shading, or . 18. High Voltage Warning Do not attempt to the oven chassis. (Use...
Service Manual
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... OUTPUT POWER MODEL OPERATING FREQUENCY MAGNETRON COOLING METHOD OUTSIDE DIMENSIONS NET WEIGHT SHIPPING WEIGHT MW5480W/MW5481G/MW5380W/MW5381G 99 MINUTES 99 SECONDS 120V/60HZ, AC MICROWAVE : 1,300W FROM 90W TO 900W (10 LEVEL POWER) (IEC-705 TEST PROCEDURE) 2,450MHz OM75PH(31)ESS COOLING FAN MOTOR 2011/32(W) x 1111/32(H) x 145/8(D) 33.1 lbs. 37.5 lbs 2-2 Comparison Chart FEATURE MORE/LESS AUTO REHEAT AUTO DEFROST TIME COOK POWER LEVEL INSTANT COOK MEMORY BOOST CHILD LOCK CLOCK GRILL COMBI MODEL MW5480W...
... OUTPUT POWER MODEL OPERATING FREQUENCY MAGNETRON COOLING METHOD OUTSIDE DIMENSIONS NET WEIGHT SHIPPING WEIGHT MW5480W/MW5481G/MW5380W/MW5381G 99 MINUTES 99 SECONDS 120V/60HZ, AC MICROWAVE : 1,300W FROM 90W TO 900W (10 LEVEL POWER) (IEC-705 TEST PROCEDURE) 2,450MHz OM75PH(31)ESS COOLING FAN MOTOR 2011/32(W) x 1111/32(H) x 145/8(D) 33.1 lbs. 37.5 lbs 2-2 Comparison Chart FEATURE MORE/LESS AUTO REHEAT AUTO DEFROST TIME COOK POWER LEVEL INSTANT COOK MEMORY BOOST CHILD LOCK CLOCK GRILL COMBI MODEL MW5480W...
Service Manual
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... Button 8. Clock/Auto Start Button 5. More/Less Button 7. Start Button 9. Auto Defrost Button 3. 3. One Minute + Button 2. Power Level Selection Button 4. Auto Reheat Button 6 11.Number Key Button 5 8 3-2 Features & External Views Door Ventilation Slot Light Safety Interlock Holes Door Latches Glass Plate Guide Roller One Minute + Popcorn Frozen Dinner Fresh Vegetable Diet Cook Potato Frozen Breakfast Auto Defrost Auto Reheat 12 3 456 789 0 Power Level More/Less Clock Auto Start Pause Cancel Hold Timer Start Control Panel Open Door Push Button 369mm 517mm Samsung...
... Button 8. Clock/Auto Start Button 5. More/Less Button 7. Start Button 9. Auto Defrost Button 3. 3. One Minute + Button 2. Power Level Selection Button 4. Auto Reheat Button 6 11.Number Key Button 5 8 3-2 Features & External Views Door Ventilation Slot Light Safety Interlock Holes Door Latches Glass Plate Guide Roller One Minute + Popcorn Frozen Dinner Fresh Vegetable Diet Cook Potato Frozen Breakfast Auto Defrost Auto Reheat 12 3 456 789 0 Power Level More/Less Clock Auto Start Pause Cancel Hold Timer Start Control Panel Open Door Push Button 369mm 517mm Samsung...
Service Manual
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... its antenna does not hit any adjacent parts, or it may be sure to the wave guide. 4. Remove the oven lamp by pulling out from the magnetron and lamp. 2. NOTE1: When removing the magnetron, make sure the gasket is in one assembly). Remove the air cover. 3. NOTE2: When replacing the magnetron, be damaged. 9. Fan Motor Screw Magnetron H. Disconnect all of Magnetron, Motor Assembly and Lamp Remove the magnetron including the shield case, permanent magnet, choke...
... its antenna does not hit any adjacent parts, or it may be sure to the wave guide. 4. Remove the oven lamp by pulling out from the magnetron and lamp. 2. NOTE1: When removing the magnetron, make sure the gasket is in one assembly). Remove the air cover. 3. NOTE2: When replacing the magnetron, be damaged. 9. Fan Motor Screw Magnetron H. Disconnect all of Magnetron, Motor Assembly and Lamp Remove the magnetron including the shield case, permanent magnet, choke...
Service Manual
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... into the gap between Door "E" and Door "A" until you hear the 'tick' sound. 1. Lower Hinge Screw Door "C" 4-3-3 Removal of Door Assembly Remove screws securing the upper hinge and lower hinge. Door "A" Door "E" 4-2 Samsung Electronics Disassembly and Reassembly 4-3 Replacement of Door Assembly 4-3-1 Removal of Door "E" Following the procedure as shown in the figure, insert and bend a thin metal plate between Door "A" and Door "C" to remove Door "C". Be careful when handling Door "C" because it is fragile. Then remove the door assembly.
... into the gap between Door "E" and Door "A" until you hear the 'tick' sound. 1. Lower Hinge Screw Door "C" 4-3-3 Removal of Door Assembly Remove screws securing the upper hinge and lower hinge. Door "A" Door "E" 4-2 Samsung Electronics Disassembly and Reassembly 4-3 Replacement of Door Assembly 4-3-1 Removal of Door "E" Following the procedure as shown in the figure, insert and bend a thin metal plate between Door "A" and Door "C" to remove Door "C". Be careful when handling Door "C" because it is fragile. Then remove the door assembly.
Service Manual
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... switches operate properly, check if any other part such as the control circuit board, blower motor or high voltage transformer is not mounted properly, microwave energy may leak from the power source. 2. Screw the drive motor cover to the drive motor. 9. Samsung Electronics Disassembly and Reassembly Door "E" Key Door Spring Screw Drive Motor Drive Motor Cover Base Plate Thermo Switch 4-3 Disconnect all the leads to the base plate with the coupler. 8. When mounting the door...
... switches operate properly, check if any other part such as the control circuit board, blower motor or high voltage transformer is not mounted properly, microwave energy may leak from the power source. 2. Screw the drive motor cover to the drive motor. 9. Samsung Electronics Disassembly and Reassembly Door "E" Key Door Spring Screw Drive Motor Drive Motor Cover Base Plate Thermo Switch 4-3 Disconnect all the leads to the base plate with the coupler. 8. When mounting the door...
Service Manual
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... the surface of hair dryer is difficult, replace with Ass'y control panel. 2. Remove the screw securing the ground tail of the keyboard. 4-6-2 Removal of Control Box Assembly 1. Window display should not be broken. Therefore, applying hot air such as its mounting tabs will be disassembled as using of escutcheon base is attached to ground any problems (shorted contacts or uneven surface) can be...
... the surface of hair dryer is difficult, replace with Ass'y control panel. 2. Remove the screw securing the ground tail of the keyboard. 4-6-2 Removal of Control Box Assembly 1. Window display should not be broken. Therefore, applying hot air such as its mounting tabs will be disassembled as using of escutcheon base is attached to ground any problems (shorted contacts or uneven surface) can be...
Service Manual
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... checks can indicate only an open filament or shorted magnetron : 2. A continuity check across the magnetron filament terminals should read open. It is present at the high voltage terminals during any oven components or wiring, always unplug the oven from the circuit by disconnecting its power source and discharge the high voltage capacitor. 5-1 High Voltage Transformer 1. Remove connectors from the PCB...
... checks can indicate only an open filament or shorted magnetron : 2. A continuity check across the magnetron filament terminals should read open. It is present at the high voltage terminals during any oven components or wiring, always unplug the oven from the circuit by disconnecting its power source and discharge the high voltage capacitor. 5-1 High Voltage Transformer 1. Remove connectors from the PCB...
Service Manual
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... Latch Body to the oven assembly, adjust the Latch Body by disconnecting its leads. 2. Primary Interlock Switch Interlock Monitor Switch Body Latch Lever Door Door Sensing Switch Primary switch Monitor switch (COM-NC) Door Sensing S/W Door Open ∞ 0 ∞ Door Closed 0 ∞ 0 5-2 Samsung Electronics Operate the microwave oven with the meter set at the highest resistance scale. 2. When mounting the Latch Body to the oven assembly. 4. A shorted capacitor will show continuous continuity. 4. A meter with the wiring diagram...
... Latch Body to the oven assembly, adjust the Latch Body by disconnecting its leads. 2. Primary Interlock Switch Interlock Monitor Switch Body Latch Lever Door Door Sensing Switch Primary switch Monitor switch (COM-NC) Door Sensing S/W Door Open ∞ 0 ∞ Door Closed 0 ∞ 0 5-2 Samsung Electronics Operate the microwave oven with the meter set at the highest resistance scale. 2. When mounting the Latch Body to the oven assembly. 4. A shorted capacitor will show continuous continuity. 4. A meter with the wiring diagram...
Service Manual
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... magnetron can be taken to high power and operate for Water 1000 : Water (cc) ∆T : Temperature Rise (T2-T1) Mc : Cylindrical borosilicate glass weight To : Room temperature. 7. Stir water in figure below. Set the oven to the first place of decimals.) 4. Minimum Temperature Rise Maximum Temperature Rise X 100(%) D Beaker D D/4 D/4 D/4 D/4 Cooking Tray Samsung Electronics 5-3 5-8 Output Power of centigrade temperature. 5-9 Microwave Heat Distribution - Put each . 2. Microwave heat...
... magnetron can be taken to high power and operate for Water 1000 : Water (cc) ∆T : Temperature Rise (T2-T1) Mc : Cylindrical borosilicate glass weight To : Room temperature. 7. Stir water in figure below. Set the oven to the first place of decimals.) 4. Minimum Temperature Rise Maximum Temperature Rise X 100(%) D Beaker D D/4 D/4 D/4 D/4 Cooking Tray Samsung Electronics 5-3 5-8 Output Power of centigrade temperature. 5-9 Microwave Heat Distribution - Put each . 2. Microwave heat...
Service Manual
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... the wave guide as listed in this may result. 5) Measured leakage must be held on the door and/or cabinet door seam and move the probe horizontally along the seam, the door viewing window and the exhaust openings moving the probe in a clockwise direction at a rate of 1 inch/sec. Place the spacer 12 45 78 0 Power Level Clock Auto Start Pause Cancel 3 6 9 More/Less Hold Timer Start...
... the wave guide as listed in this may result. 5) Measured leakage must be held on the door and/or cabinet door seam and move the probe horizontally along the seam, the door viewing window and the exhaust openings moving the probe in a clockwise direction at a rate of 1 inch/sec. Place the spacer 12 45 78 0 Power Level Clock Auto Start Pause Cancel 3 6 9 More/Less Hold Timer Start...
Service Manual
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... operation procedure. Defective Ass'y PCB Refer to Ass'y PCB 3. 6. DO NOT TOUCH ANY PART OF THE CIRCUIT OR THE CONTROL CIRCUIT BOARD, SINCE STATIC DISCHARGE MAY DAMAGE IT. NOTE 1: All of power relay contacts and if it is defective. Shorted or open membrane panel 4. No display and no microwave oscillation. (No heat while oven lamp and fan motor turn on.) 1. Off-alignment of high voltage circuit especially magnetron filament circuit...
... operation procedure. Defective Ass'y PCB Refer to Ass'y PCB 3. 6. DO NOT TOUCH ANY PART OF THE CIRCUIT OR THE CONTROL CIRCUIT BOARD, SINCE STATIC DISCHARGE MAY DAMAGE IT. NOTE 1: All of power relay contacts and if it is defective. Shorted or open membrane panel 4. No display and no microwave oscillation. (No heat while oven lamp and fan motor turn on.) 1. Off-alignment of high voltage circuit especially magnetron filament circuit...
Service Manual
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... in mode. Wrap thinner parts of the food with gold or silver powder also causes sparks. Replace turntable motor. 6-2 Samsung Electronics Microwave output is low;. Decrease in Oven does not operate and return to its characteristics. Noise from the motor. Adjust door and latch switches. Troubleshooting 6-1 Electrical Malfunction(continued) SYMPTOM Oven lamp and fan motor turn on the oven wall. 2. Off-alignment of turntable motor. 2. Open or loose wiring of primary interlock 3. Ceramic ware trimmed with aluminum foil. Check wire...
... in mode. Wrap thinner parts of the food with gold or silver powder also causes sparks. Replace turntable motor. 6-2 Samsung Electronics Microwave output is low;. Decrease in Oven does not operate and return to its characteristics. Noise from the motor. Adjust door and latch switches. Troubleshooting 6-1 Electrical Malfunction(continued) SYMPTOM Oven lamp and fan motor turn on the oven wall. 2. Off-alignment of turntable motor. 2. Open or loose wiring of primary interlock 3. Ceramic ware trimmed with aluminum foil. Check wire...
Service Manual
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...FUSE;NORMAL BLO 3AB-314015 FUSE-HOLDER;125V/250V,15A/7.5A,50mohm MOTOR-FAN;SMF-557UC 120/60 2600 MW5574W WIRE HARNESS-A;120V60HZ MW5574W THERMOSTAT;CS-7SA(160/60)187Y 250V7.5A 1 MAGNETRON;OM75PH(31)ESS LAMP-INCANDESCENT;130V,-,40W,ORG,B/L,-,2 COVER-AIR;PP 2 WHT M945/MB45 ASSY BODY LATCH;2ND-W1 M97G45/M9745 LEVER-DOOR...-12 TRAY-COOKING;GLASS T6.0 PI318 1050G MW56 ASSY-GUIDE ROLLER;D19 STD COUPLER;PTFE 12G WHT MB245 FOOT;PP(A353) BLK MW5630T BASE-PLATE;SGCC T0.8 345 565 MOTOR-DRIVE;M2HJ49ZR02,ST-16 21V 5/6 COVER-MGT;PP T2.0 WHT M745 ASSY CONTROL-BOX;120V60HZ MW5480W /XAA WHT ASSY CONTROL-BOX;...
...FUSE;NORMAL BLO 3AB-314015 FUSE-HOLDER;125V/250V,15A/7.5A,50mohm MOTOR-FAN;SMF-557UC 120/60 2600 MW5574W WIRE HARNESS-A;120V60HZ MW5574W THERMOSTAT;CS-7SA(160/60)187Y 250V7.5A 1 MAGNETRON;OM75PH(31)ESS LAMP-INCANDESCENT;130V,-,40W,ORG,B/L,-,2 COVER-AIR;PP 2 WHT M945/MB45 ASSY BODY LATCH;2ND-W1 M97G45/M9745 LEVER-DOOR...-12 TRAY-COOKING;GLASS T6.0 PI318 1050G MW56 ASSY-GUIDE ROLLER;D19 STD COUPLER;PTFE 12G WHT MB245 FOOT;PP(A353) BLK MW5630T BASE-PLATE;SGCC T0.8 345 565 MOTOR-DRIVE;M2HJ49ZR02,ST-16 21V 5/6 COVER-MGT;PP T2.0 WHT M745 ASSY CONTROL-BOX;120V60HZ MW5480W /XAA WHT ASSY CONTROL-BOX;...
Service Manual
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... V.F.D N/HEL 1 ASSY CONTROL-PANEL;120V60HZ NEWGARD MW5470W 1 Remarks MW5480W/MW5380W MW5481G/MW5381G MW5480W MW5380W MW5481G MW5381G MW5480W/MW5380W MW5481G/MW5381G 7-5 Body Latch Parts List Ref. Description/Specification B 1 DE66-40001A LATCH-BODY;POM(F20-02) 40GR NTR B 2 3405-000178 SWITCH-MICRO;250V,15A,200gf,SPST-NO B 3 3405-000175 SWITCH-MICRO;250V,15A,200gf,SPST-NO B 4 DE66-90001A LEVER-SWITCH;P.O.M(F20-02) 2 6 NTR 2ND-W Samsung Electronics Q'ty Remarks...
... V.F.D N/HEL 1 ASSY CONTROL-PANEL;120V60HZ NEWGARD MW5470W 1 Remarks MW5480W/MW5380W MW5481G/MW5381G MW5480W MW5380W MW5481G MW5381G MW5480W/MW5380W MW5481G/MW5381G 7-5 Body Latch Parts List Ref. Description/Specification B 1 DE66-40001A LATCH-BODY;POM(F20-02) 40GR NTR B 2 3405-000178 SWITCH-MICRO;250V,15A,200gf,SPST-NO B 3 3405-000175 SWITCH-MICRO;250V,15A,200gf,SPST-NO B 4 DE66-90001A LEVER-SWITCH;P.O.M(F20-02) 2 6 NTR 2ND-W Samsung Electronics Q'ty Remarks...
Service Manual
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... M4X8 SWRCH18A Z SCREW-ASSY TAPTITE;PH TC M4X8 SWRCH18A Z SCREW-TAP PH;2S-4X12 FE ZPC3 SCREW-ASSY TAP;2S-4X8 MSW3ZPC YEL WS Q'ty Remarks 2 BASE 2 PCB 2 B-LATC 2 C-PANE 5 O-PANEL 1 P/EART 4 HVT 4 MGT 2 HI-LOW 2 C-BLOW 2 HI-UPP 2 MGT-TC 1 MEM-PN 1 CV-TCO 2 M/GEAR 1 FUSE-H Q1 B/HVC 7-4 Samsung Electronics Exploded Views and Parts List 7-6 Standard Parts List Parts No.
... M4X8 SWRCH18A Z SCREW-ASSY TAPTITE;PH TC M4X8 SWRCH18A Z SCREW-TAP PH;2S-4X12 FE ZPC3 SCREW-ASSY TAP;2S-4X8 MSW3ZPC YEL WS Q'ty Remarks 2 BASE 2 PCB 2 B-LATC 2 C-PANE 5 O-PANEL 1 P/EART 4 HVT 4 MGT 2 HI-LOW 2 C-BLOW 2 HI-UPP 2 MGT-TC 1 MEM-PN 1 CV-TCO 2 M/GEAR 1 FUSE-H Q1 B/HVC 7-4 Samsung Electronics Exploded Views and Parts List 7-6 Standard Parts List Parts No.
Service Manual
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... ORG WHT WHT POWER RELAY (SECONDARY INTERLOCK) 0V F FA MAGNETRON NOTE: CIRCUIT SHOWN WITH DOOR IS OPENED POSITION. 9. DOOR : OPEN 3. V. INPUT : 120V 60HZ 2. NOTE: FOR SERVICE REPLACEMENT USE 16 GA 105 C THERMOPLASTIC COVERED WIRE EXCEPT FOR HIGH VOLTAGE LEADS OR AS NOTED ON SPECIAL LEADS. 1. Schematic Diagrams 9-1 Schematic Diagrams WARNING POWER MUST BE DISCONNECTED BEFORE SERVICING THIS APPLINACE CAVITY FUSE BLK TCO 125V15A PRIMARY S/W BLK BLK LAMP BLK L 130V 40W...
... ORG WHT WHT POWER RELAY (SECONDARY INTERLOCK) 0V F FA MAGNETRON NOTE: CIRCUIT SHOWN WITH DOOR IS OPENED POSITION. 9. DOOR : OPEN 3. V. INPUT : 120V 60HZ 2. NOTE: FOR SERVICE REPLACEMENT USE 16 GA 105 C THERMOPLASTIC COVERED WIRE EXCEPT FOR HIGH VOLTAGE LEADS OR AS NOTED ON SPECIAL LEADS. 1. Schematic Diagrams 9-1 Schematic Diagrams WARNING POWER MUST BE DISCONNECTED BEFORE SERVICING THIS APPLINACE CAVITY FUSE BLK TCO 125V15A PRIMARY S/W BLK BLK LAMP BLK L 130V 40W...
