ORDER NO. SIMMC 0001002C1 E1 Service Manual Microwave Oven MODELS APH USA CPH Canada NN-S560BF/WF NN-S550BF/WF NN-S540BF/WF NN-L530BF NN-L530WF NN-L520WF NN-S510WF * RPH Model refer to the last page. Specifications for APH : Specifications: NN-S560BF/WF Model: Power Source: NN-S550BF/WF NN-S540BF/WF NN-L530BF/WF 1370W 1370W 1100W 1000W *120V AC Single Phase, 60Hz 1370W 1370W Power Requirement: Output(IEC705-88): 1300W Microwave Frequency: 1300W *2450MHz *99min.
> WARNING This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. Products powered by electricity should be serviced or repaired only by experienced professional technicians.
DANGER OF HIGH VOLTAGE AND HIGH TEMPERATURE (HOT/LIVE) OF THE INVERTER POWER SUPPLY (U) INVERTER WARNING This Inverter board looks like a regular PCB. However, this PCB drives the magnetron tube with extremely high voltage NEW HV and high current. IT HAS: 1. Very high voltage and high current circuits. It functions the same as the high voltage transformer and high voltage capacitor in ordinary microwave ovens. 2. 3. Aluminum heat sink is energized with very high voltages and high heat energy.
FEATURE CHART MODEL FEATURE Three Stage Cooking Inverter Turbo Defrost Auto Reheat Inverter Auto Cook Sensor Reheat Sensor Cook Quick Min Popcorn Timer Digital Clock NN-S560WF NN-S550WF NN-S540WF NN-S510WF NN-S530WF NN-S520WF CONTROL PANEL NN-S560(CPH) NN-S560(APH) 1 2 3 5 NN-S550 oz 1 lb 1 4a 4a 2 3 5 2 k Inverter Turbo Defrost Popcorn (lb/k ) 3 (1 - 3 ) 8. 6 9 Lunch Dinner (4 -5 ) (6 -7 ) Froz. Entrées 9. 10. Potatoes FreshVeg. 11. 12. Froz.Veg.
CONTROL PANEL NN-S540 NN-L530 1 NN-L520 1 1 2 4b 2 3 3 4b 2 3 14 10 13 14 13 15 15 5 5 11 6 11 16 16 17 7 8 17 5 11 6 16 7 8 6 17 7 8 MN-S510 (1) (2) (3) (4a) (4b) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14) (15) (16) 1 2 4b 3 10 Display Windows Popcorn Pad Inverter Turbo Defrost Pad Sensor Reheat Pad Auto Reheat Pad Power Level Pad Number Pads Timer Pad Clock Pad Sensor Cook Pad Inverter Auto Cooking Pads Quick Min Pad More /Less Pad Cooking Guide Auto Cook Pad Serving/
OPERATION AND DIGITAL PROGRAMMER CIRCUIT TEST PROCEDURE When you pluge the power supply cord into the wall outlet, microwave oven automatically enter into the state of lb / oz. If you want to use g / kg state, please press Start pad after pluging the power source. 1. To Set Clock OPERATION SCROLL DISPLAY 1. Plug the power supply cord into wall outlet. OPERATION SCROLL DISPLAY 8. When 2nd stage cooking time has Time of day or colon if set appears in the display. elapsed, oven beeps 5 times and 88.
OPERATION 8. Auto Reheat SCROLL DISPLAY OPERATION 3. Press Serving / Weight pad. (Select 4. 6. 10. 14 slices) SCROLL DISPLAY 1. Press Auto Reheat pad twice 4 for two servings. 2 4. Press Start pad. 2. Press Start pad.Auto Reheat 4.10 When cooking time has elapsed, Times of day or colon if set appears Oven beeps 5 times and shuts off. in the display. cycle begins time counts down. 3.When cooking time has elapsed, Oven beeps 5 times and shuts off. 2.
SCHEMATIC DIAGRAM (APH) SCHEMATIC DIAGRAM (APH) -7-
SCHEMATIC DIAGRAM (CPH) SCHEMATIC DIAGRAM (CPH) -8-
DESCRIPTION OF OPERATING SEQUENCE 1. Variable power cooking control Variable Power Cooking The coil of power relay B (RY1) is energized intermittently by the digital programmer circuit, when the oven is set at any power selection except for High power position. The digital programmer circuit controls the ON-OFF time of power relay B contacts in order to vary the output power of the microwave oven from ”Low” to “High” power. One complete ON and OFF cycle of power relay B is 22 seconds.
4. Sensor Cooking (NN-S560BFAPH/CPH NNS560WFAPH/CPH) AUTO SENSOR COOKING/REHEAT PROCESS Auto sensor cooking is a revolutionary way to cook by microwave without setting a power level or selecting a time. All that is necessary is to select an Auto Sensor Program before starting to cook. Understanding Auto Sensor Cooking As the food cooks, a certain amount of steam is produced. If the food is covered, this steam builds up and eventually escapes from the container.
CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING Unlike many other appliances, the microwave oven is high-voltage, high current equipment. Though it is free from danger in ordinary use, extreme care should be taken during repair. CAUTION Servicemen should remove their watches whenever working close to or replacing the magnetron. WARNING Never touch any circuit wiring with your hand nor with an insulated tool during operation. 3. When parts must be replaced, remove the power plug from the outlet. 1.
6.Confirm after repair (A) After repair or replacement of parts, make sure that the screws of the oven, etc. are neither loose nor missing. Microwaves might leak if screws are not properly tightened. (B) Make sure that all electrical connections are tight before inserting the plug into the wall outlet. (C) Check for microwave energy leakage. (Refer to procedure for measuring microwave energy leakage.
DISASSEMBLY AND PARTS REPLACEMENT PROCEDURE 1. Magnetron (A) Discharge the high voltage capacitors, as mentioned and shown on page 11. (B) Remove 1 screw holding air guide c to magnetron. (C) Disconnect 2 high voltage lead wires from magnetron filament terminals. (D) Remove 4 screws holding the magnetron. NOTE: After replacement of the magnetron, tighten mounting screws in an X pattern, properly making sure there is no gap between the waveguide and the magnetron to prevent microwave leakage.
5. Door assembly (A) Remove door C from door E by carefully pulling outward starting from upper right hand corner using a flat blade screwdriver. (B) Separate door E from tabs on door A and remove door A. (C) Open Door E at the opening angle of approximately 10° (Note: The door cannot be removed if the opening angle is greater than 10°). (D) Remove the door from its hinges by pushing the door’s lower hinge pin upward and out. (E) Remove door screen B from door A. (F) Remove door key and door key spring.
8. Inverter Power Supply (U) CAUTIONS WHILE REPLACING INVERTER POWER SUPPLY (U) 1. Make sure to leave the grounding plate in its place. 2. Make sure to securely tighten grounding screw from the bottom of chasis (base). 3. Securely connect 3 lead wire connectors. 4. Make sure the heat sink has enough space (gap) from the oven. Take special care not to touch any lead wire to the aluminum heat sink because it is hot. 5. Remove screw and slide oriffice toward you, then lift up and out. 1.
COMPONENT TEST PROCEDURE 5. Inverter Power Supply (U)for USA only DO NOT try to REPAIR this H.V. Inverter power supply (U).Replace as whole H.V. Inverter(U) Unit. CAUTION NEW. H.V. 1. High voltage is present at the high voltage terminal of the High Voltage Inverter (U) including aluminum heat sink during any cook cycle. 2. It is neither necessary nor advisable to attempt measurement of the high voltage. 3.
6. Steam Sensor and Digital Programmer Circuit 1) 2) 3) 4) 5) 6) In order to determine if the steam sensor function of the digital programmer circuit is in working order or not, do the following test. Place a water load (150 cc) in the oven. Tap Sensor Reheat pad. Tap Start Pad. Steam Sensor detects steam about 1.5 to 4 minutes after the Start Pad is tapped. T1 time cooking automatically switches to remaining time cooking (T2). The remaining cooking time (T2) appears in display window.
MEASUREMENTS AND ADJUSTMENTS WARNING * For continued protection against radiation hazard, replace only with identical replacement parts(For touch models Part No. ANE6142-1450,Type No. V-16G-3C26-M for Primary latch switch; Part No. A61425180AP, Type No. L-3C2-2 for Secondary latch switch; Part No. A61785180AP, Type No. L-2C2-2 for short switch and Part. No. AEG5J1EG12B/AEG5J1EG18B, Type No. G5J-1-TP for power relay B(RY1)) * When the 18 Amp.
PROCEDURE FOR MEASURING MICROWAVE ENERGY LEAKAGE (B) Should the radiation leakage be more than 2 mW/cm2 (1mW/cm for Canada) after determining that all parts are in good condition, functioning properly, and genuine replacement parts as listed in this manual have been used, immediately notify PASC, PSC or PCI. WARNING Check for radiation leakage after every servicing. Should the leakage be more than 2 mW/cm 2 (1mW/cm 2 for Canada) inform PASC, PSC, or PCI immediately.
TROUBLESHOOTING GUIDE CAUTION 1. Check grounding before checking for trouble. 2. Be careful of high voltage circuit. 3. Discharge high voltage capacitor. 4. When checking the continuity of the switches or the high voltage transformer,disconnect one lead wire from these parts and then check continuity with the AC plug removed. To do otherwise may result in a false reading or damage to your meter.
7. Oven does not operate and return to plugged in mode as soon as start pad is pressed. 1. Defective DPC 8. Loud buzzing noise can be heard. 1. Loose fan and fan motor 9. Turntable motor does not rotate. 1. Open or loose wiring of turntable motor 2. Defective turntable motor 10. Oven stops operation during cooking. 1. Open or loose wiring of primary and secondary latch switch 2.Operation of thermal cutout 11.
Troubleshooting of Inverter Circuit (U) and Magnetron NEW H.V. This oven is programmed with a self diagnostics failure code system which will help for troubleshooting. H97, H98, and H99 are the provided failure codes to indicate magnetron and inverter circuit problem areas. This section explains failure codes of H97, H98, and H99. First, you must program the DPC by pressing Clock , Time , Start , Power Level . Program unit for operation.
Trouble Related to Digital Programmer Circuit SYMPTOM No display when oven is first plugged in. Oven is dead. STEP 1 CHECK Fuse pattern of DPC RESULT Normal Open (NOTE) CAUSE/CORRECTIONS STEP 2 Shorted Circuit of ZNR, L.V.T., Oven Lamp etc.
42 40 38 42 - 24 - 10 7 5 9 42 8 42 2 34 1 20 37 21 11 12 26 22 13 28 4 24 27 3 14 15 5 23 6 17 35 18 19 29 33 36 32 39 31 30 16 EXPLODED VIEW AND PARTS LIST
PARTS LIST NOTE 1: When ordering replacement part(s), please use part number(s) shown in this part list. Do not use description of the part. 2: Important safety notice: Components identified by mark have special characteristics important for safety. When replacing any of these components, use only manufacture’s specified parts. Ref.No. Part No.
Ref.No. Part No.
DOOR ASSEMBLY D8 D1 D4 D2 D5 D7 D6 D3 (S-4T0) Ref.No. Part No.
ESCUTHEON BASE ASSEMBLY E5 E6 E7 E4 E1 E3 E2 (S-4T0) Ref.No. Part No.
PACKING AND ACCESORIES OVEN WALL TRAY PAD Cut into three parts when packing. P3 FRONT VIEW 2 Put in P5 P6 n dia the ove gonaily. Put in the o ven 1 ROLLER RING(U) P4 P1 P2 Cut into two parts when packing. (S-4T0) Part name & Description Pcs/ set Ref.No. Part No.
WIRING MATERIAL AND (S-4T0) Ref.No. Part No. Part name & Description Pcs/ set Remarks W1 F030A4T20AP LEAD WIRE HARNESS 1 ******APH W1 F030A4T00CP LEAD WIRE HARNESS 1 ******CPH W2 F030E4T00AP H.V. LEAD WIRE 1 ******APH W2 F030E4T00CP H.V.
DIGITAL PROGRAMMER CIRCUIT (NN-S560BFAPH/CPH,S560WFAPH/CPH) PARTS LIST Ref.No. BZ310 Part name & Description Part No. Pcs/ Set Remarks AEFB22EP20TL BUZZER 1 2.0KHz C12,C290,C291,C300,C301 AECUB2F104ZK CAPACITOR 5 0.1µF/25V C330 AECUB5C102KK CAPACITOR 1 0.1µF/50V C340 AECUB5F103ZK CAPACITOR 1 0.
DIGITAL PROGRAMMER CIRCUIT PARTS LIST Ref.No. (NN-S530BFAPH/CPH,S540BFAPH/CPH,S540WFAPH/CPH,L530BFAPH/CPH, L530WFAPH/CPH,L520WFAPH/CPH,L510WFAPH/CPH) Part No. Part name & Description Pcs/ Set Remarks BZ310 AEFB22EP20TL BUZZER 1 2.0KHz C12,C290,C291,C300,C301 AECUB2F104ZK CAPACITOR 5 0.1MF/25V C330 AECUB5C102KK CAPACITOR 1 0.1MF/50V C340 AECUB5F103ZK CAPACITOR 1 0.
-33-
-34-
Model for Latin America & Mexico RPH MODELS Mexico Latin America NN-S540BF/WF NN-540BF/WF * This product is based on NN-S540BF/WF APH model, the different parts are listed as followings: * Any serviceman who has any quiries or order service parts, please contact own area’s service company Ref.No. Part No.