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ORDER NO. SIMMC 0001002C1
E1
Service Manual
Microwave Oven
MODELS APH CPH
USA 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.
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Specifications for APH :
Model: NN-S560BF/WF NN-S550BF/WF NN-S540BF/WF NN-L530BF/WF
Specifications:
Power Source:
120V AC Single Phase, 60Hz
*
Power Requirement: 1370W 1370W 1370W
1370W
Output(IEC705-88):
1300W 1300W 1100W 1000W
Microwave Frequency: 2450MHz
*
Timer:
99min.99sec
*
O O
Outside
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> 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. Any attempt to service or repair the product or products dealt with in this service information by anyone else could
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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. Aluminum heat sink is energized with very high voltages and high heat energy. 3.
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FEATURE CHART NN-S560WF NN-S550WF NN-S540WF NN-S510WF MODEL FEATURE NN-S530WF NN-S520WF Three Stage Cooking Inverter Turbo Defrost Auto Reheat Inverter Auto Cook Sensor Reheat Sensor Cook Quick Min Popcorn Timer Digital Clock CONTROL PANEL NN-S560(CPH) NN-S550 NN-S560(APH) oz lb 1 1 1 k Inverter Auto 2 4aaa 4aaaaa aa 2 Turbo Popcorn Reheat 2 4bbb Defrost bb (1-4servings) (lb/k ) 3 3 3 Inverter Auto Cooking 5 5 Breakfast Lunch Dinner (-) (-) (-) 13 45 67 8. 9. 10. Froz. Potatoes FreshVeg. Entrées
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CONTROL PANEL NN-S540 NN-L530 NN-L520 1 1 1 2 4b 2 2 4b 4b 3 3 3 14 14 10 13 13 15 15 5 11 5 5 6 16 11 11 6 6 7 17 16 16 8 7 7 17 17 8 8 MN-S510 (1) Display Windows (2) Popcorn Pad (3) Inverter Turbo Defrost Pad 1 (4a) Sensor Reheat Pad (4b) Auto Reheat Pad (5) Power Level Pad (6) Number Pads (7) Timer Pad 2 4b (8) Clock Pad 3 (9) Sensor Cook Pad (10) Inverter Auto Cooking Pads (11) Quick Min Pad (12) More /Less Pad (13) Cooking Guide 10 (14) Auto Co
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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 OPERATION SCROLL DISPLAY 1. Plug the power supply cord into 8. When 2nd stage cooking time has Time of day or colon if set appears in the display. wall outlet. elapsed, oven beeps 5 times and
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8. Auto Reheat OPERATION SCROLL DISPLAY 3. Press Serving / Weight pad. OPERATION SCROLL DISPLAY (Select 4. 6. 10. 14 slices) 1. Press Auto Reheat pad twice 4 for two servings. 2 4. Press Start pad. 2. Press Start pad.Auto Reheat 4.10 cycle begins time counts down. 2.00 Times of day or colon if set appears When cooking time has elapsed, Oven beeps 5 times and shuts off. in the display. Time of day or colon if set appears in 3.When cooking time has elapsed, Oven beeps 5 times and shuts off
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SCHEMATIC DIAGRAM (APH) SCHEMATIC DIAGRAM (APH) - 7 -
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SCHEMATIC DIAGRAM (CPH) SCHEMATIC DIAGRAM (CPH) - 8 -
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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 ON-OFF TIME OF OUTPUT programmer circuit, when the oven is set at any power selection except POWER RELAY B (RY1) POWER SETTING POWER(%) for High power position. The digital programmer circuit controls the APPROX. ON (SEC) OFF (SEC) ON-OFF time of power relay B contacts in order to vary the output HIGH 100% 22 0 power of the microwav
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4. Sensor Cooking (NN-S560BFAPH/CPH NN- AUTO SENSOR COOKING/REHEAT PROCESS S560WFAPH/CPH) 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. In Auto Sensor Cooking, a carefu
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CAUTIONS TO BE OBSERVED WHEN TROUBLESHOOTING Unlike many other appliances, the microwave oven is high-voltage, high WARNING current equipment. Though it is free from danger in ordinary use, extreme Never touch any circuit wiring with your hand nor with an care should be taken during repair. insulated tool during operation. CAUTION Servicemen should remove their watches whenever 3. When parts must be replaced, remove the power working close to or replacing the magnetron. plug from the outlet. 1.
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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.) CAUTION MICROWAVE RADIATION DO NOT BECOME EXPOSED TO RADIATION FROM THE MICROWAVE GENERATOR OR
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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. CAU
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5. Door assembly DOOR (A) Remove door C from door E by carefully pulling outward starting from CCREEN B DOOR A upper right hand corner using a flat blade screwdriver. DOOR (B) Separate door E from tabs on door A and remove door A. KEY (C) Open Door E at the opening angle of approximately 10° (Note: The door DOOR cannot be removed if the opening angle is greater than 10°). KEY SPRING (D) Remove the door from its hinges by pushing the door’s lower hinge pin upward and out. (E) Remove door screen
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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 ou
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COMPONENT TEST PROCEDURE 5. Inverter Power Supply (U)for USA only CAUTION NEW. H.V. DO NOT try to REPAIR this H.V. Inverter power supply 1. High voltage is present at the high voltage terminal of (U).Replace as whole H.V. Inverter(U) Unit. the High Voltage Inverter (U) including aluminum heat sink during any cook cycle. 2. It is neither necessary nor advisable to attempt mea- surement of the high voltage. 3. Before touching any oven components, or wiring, DO NOT T
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6. Steam Sensor and Digital Programmer Circuit In order to determine if the steam sensor function of the digital programmer circuit is in working order or not, do the following test. 1) Place a water load (150 cc) in the oven. 2) Tap Sensor Reheat pad. 3) Tap Start Pad. 4) Steam Sensor detects steam about 1.5 to 4 minutes after the Start Pad is tapped. 5) T1 time cooking automatically switches to remaining time cooking (T2). 6) The remaining cooking time (T2) appears in display window. If
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MEASUREMENTS AND ADJUSTMENTS WARNING For continued protection against radiation hazard, * SWITCH 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 GAP SHOULD BE <0.7MM. switch; Part No. A61785180AP, Type No. L-2C2-2 for ACTUATOR LEVER short switch and Part. No. AEG5J1EG12B/AEG5J1EG18B, Type No. G5J-1-TP for power relay B(RY1)) When the 18 Amp. fuse is blow
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PROCEDURE FOR MEASURING MICROWAVE ENERGY LEAKAGE 2 (B) Should the radiation leakage be more than 2 mW/cm (1mW/cm WARNING for Canada) after determining that all parts are in good Check for radiation leakage after every servicing. Should condition, functioning properly, and genuine replacement 2 2 parts as listed in this manual have been used, immediately the leakage be more than 2 mW/cm (1mW/cm for notify PASC, PSC or PCI. Canada) inform PASC, PSC, or PCI immediately. After repairing or replac
