Panasonic NN-SB636B RUH Service Manual
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Panasonic NN-SB636B RUH Service Manual

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Specifications
Power Requirement
Power Output
Microwave Frequency
Magnetron
Timer
Outside Dimensions
Cavity Dimensions
Net Weight
Shipping weight
1500 Watts (
Single phase, 3 wire grounded
1100 Watts full microwave power (IEC60705)
2,450 MHz
2M248J
0 ~ 99 min. and 50 sec.
13 ⁄
Specifications subject to change without notice.
1.3 cu.ft
120
Volts ~ AC 60 Hz
13.5 A)
20
7
⁄ " x 12
⁄
" x 16
1
⁄
"
3
1
8
8
6
13
13
3
" x 9
⁄
" x 15 ⁄
"
16
16
1
6
35.3 lbs
39.7 lbs
© Panasonic Corporation 2015 Unauthorized
copying and distribution is a violation of law
Order No.
Microwave Oven
Model No.
NN-SB636B RUH
Black
Mexico

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Summary of Contents for Panasonic NN-SB636B RUH

  • Page 1 Cavity Dimensions 13 ⁄ ” x 9 ⁄ ” x 15 ⁄ ” Net Weight 35.3 lbs Shipping weight 39.7 lbs Specifications subject to change without notice. © Panasonic Corporation 2015 Unauthorized copying and distribution is a violation of law...

  • Page 2: Safety Precautions

      WARNING     This product should be serviced only by trained qualified personnel.  This service manual covers products for following markets.  When troubleshooting or replacing parts, please refer to the country identifications shown below for your  applicable product specification.  ……For        SAFETY PRECAUTIONS This device is to be serviced only by properly qualified service personnel. Consult the service manual for proper service procedures to assure continued safety operation and for precautions to be taken to avoid possible exposure to excessive microwave energy.

  • Page 3: Table Of Contents

    CONTENTS (Page) SAFETY PRECAUTIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Inside front cover POWER LEVEL &...

  • Page 4: Power Level & Accessories

    POWER LEVEL & ACCESSORIES ITEM DESCRIPTION Control Complement Microwave Power for Variable Cooking Power level 1100 Watts High 750 Watts Medium 550 Watts 300 Watts Defrost 150 Watts Model/serial Number Location Inside Glass Accessories Tray This microwave oven is designed for household use only. It is not recommended for commercial purposes.

  • Page 5: Cautions

    CAUTIONS Unlike other appliances, the microwave oven is a MICROWAVE RADIATION high-voltage and high-current device. Personnel should not be exposed to the Though it is free from danger during ordingary use, microwave energy which may radiate from the extreme care should be taken while servcing the unit. magnetron or other microwave generating device if it is improperly used or connection.

  • Page 6: Installations

    INSTALLATION BEFORE YOU BEGIN, READ THE FOLLOWING INSTRUCTIONS COMPLETELY AND CAREFULLY. INSTALLING GROUNDING INSTRUCTIONS This microwave oven is designed to be used in a fully 1. Empty the microwave oven and clean the inside with a earthed condition. soft, damp cloth. Check for damage such as misaligned door, It is imperative, therefore, to make sure it is properly damage around the door or dents inside the cavity or on the grounded prior to servicing.

  • Page 7: Operating Instructions

    OPERATING INSTRUCTIONS CONTROL PANEL FEATURES Cocción Auto Palomitas Recalentar Automática (3 Opciones) (1- 4 porciones) (1-7) Auto Cocción Palomitas Recalentar Automática (3 Opciones) (1- 4 porciones) (1-7) Auto Auto Potencia Potencia Descongelar Porciones Porciones (10 Niveles) (lb/kg) /Peso Descongelar (10 Niveles) /Peso 30 Seg Automático...

  • Page 8: Operating Sequence

    OPERATING SEQUENCE 4. TURBO DEFROST The following is a description of component functions during oven operation. Select Stop/ 1. SETTING THE CLOCK the weight Start Reset of food 5. AUTO COOK Set the time Stop/ Timer/ Timer/ by pressing Reset Clock Clock time pads...

  • Page 9: Schematic Diagram

    SCHEMATIC DIAGRAM 0.95μF 120V20A 120V60Hz An electric charge will remain in the high voltage capacito for about 30 seconds after the oven stops operating. When checking or replacing components in the high voltage circuit, you must first discharge the high voltage capacitor by shorting across the two terminals with an insulated screwdriver.

  • Page 10: Circuit Description

    CIRCUIT DESCRIPTION power of microwave oven as POWER LEVEL. GENERAL DETAILS (refer to page 1-1) • The low voltage transformer supplies the necessary voltage to the micom controller when power cord is WHEN THE DOOR IS OPENED DURING plugged in. COOKING •...

  • Page 11: Service Information

    SERVICE INFORMATION TOOLS AND MEASURING INSTRUMENTS NECESSARY TOOLS NECESSARY MEASURING INSTRUMENTS Tools normally used for TV servicing are sufficient. • TESTER(VOLTS-DC, AC., Ohmmeter) Standard tools are listed below. • Microwave survey meter • Diagonal pliers - Holaday HI-1500 • Long nose pliers HI-1501 •...
  • Page 12 Record keeping and Procedure for measuring notification after measurement radiation leakage • After any adjustment or repair to a microwave oven, a Note before measuring: leakage reading must be taken. Record this leakage • Do not exceed meter full scale deflection. Leakage monitor reading on the repair ticket even if it is zero.
  • Page 13 MEASUREMENT WITH OUTER CASE NOTES WHEN MEASURING REMOVED • Do not exceed meter full scale deflection. • The test probe must be removed no faster than • When you replace the magnetron, measure for 1 inch/sec (2.5 cm/sec) along the shaded area, microwave energy leakage before the outer case is otherwise a false reading may result.

  • Page 14: Measurement Of Microwave Power Output

    MEASUREMENT OF MICROWAVE POWER OUTPUT The output power of the magnetron can be determined by performing IEC standard test procedures. However, due to the complexity of IEC test procedures, it is recommended to test the magnetron using the simple method outlined below. Necessary Equipment: *1 liter beaker *Glass thermometer *Wrist watch or stopwatch...
  • Page 15 D. DOOR ASSEMBLY REMOVAL E. HIGH VOLTAGE TRANSFORMER REMOVAL 1) Open the door. 2) Remove two screws holding the Hinge to the Cavity Ass'y. CAUTION : Be careful not to damage Door C by screwdriver. 3) Lift up and pull the door. 1) Discharge the high voltage capacitor.
  • Page 16 H. AIR GUIDE ASSEMBLY REMOVAL J. REMOVING THE TURNTABLE MOTOR 1) Disconnect the leadwire from lamp, A.C Relay and 1) Remove the glass tray monitor resistor and magnetron. 2) Remove the pully shaft VERY CAREFULLY 3) Lay the unit down on its back. 2) Remove the screw to the cavity.
  • Page 17 K. PCB ASSEMBLY REMOVAL L. INTERLOCK SYSTEM 1) Remove the control panel assembly from the 1) INTERLOCK MECHANISM cavity. The door lock mechanism is a device which has been specially designed to eliminate completely 2) Remove screws which hold the PCB to microwave activity when the door is opened during control panel.

  • Page 18: Interlock Continuity Test

    INTERLOCK CONTINUITY TEST WARNING : FOR CONTINUED PROTECTION AGAINST EXCESSIVE RADIATION EMISSION, REPLACE ONLY WITH IDENTICAL REPLACEMENT PARTS. TYPE NO. KW3A FOR SWITCHS B. SECONDARY INTERLOCK SWITCH TEST A. PRIMARY INTERLOCK SWITCH TEST Disconnect the wire lead from the secondary When the door release button is depressed slowly switch.

  • Page 19: Component Test Procedure

    COMPONENT TEST PROCEDURE CAUTIONS 1. DISCONNECT THE POWER SUPPLY CORD FROM THE OUTLET WHENEVER REMOVING THE OUTER CASE FROM THE UNIT. PROCEED WITH THE TEST ONLY AFTER DISCHARGING THE HIGH VOLTAGE CAPACITOR AND REMOVING THE WIRE LEADS FROM THE PRIMARY WINDING OF THE HIGH VOLTAGE TRANSFORMER.
  • Page 20 COMPONENTS TEST PROCEDURE RESULTS Antenna Gasket Chassis Filament NOTE: When testing the magnetron, be sure to install the magnetron gasket in the correct position and be sure that the gasket is in good condition. HIGH VOLTAGE Measure the resistance. Normal: Momentarily indicates CAPACITOR (Ohm-meter scale: Rx1000) several ohms, and then...
  • Page 21 COMPONENTS TEST PROCEDURE RESULTS FUSE Check for continuity of the fuse with an Normal Abnormal multi-meter. NOTE: If the fuse is blown, check the primary, the secondary, and the monitor switches, H.V.D. and H.V.C. before replacing the fuse. If the fuse is blown by improper switch operation replace the defective switch and the fuse at the same time.
  • Page 22 COMPONENTS TEST PROCEDURE RESULTS Ω FAN MOTOR Measure the resistance. Normal: 00~500 Abnormal: ∞ or several Ω (Wire leads removed) (Ohm-meter scale: R x 100) Ω Measure the resistance. TURNTABLE Normal: Approx. 100~200K Abnormal: ∞ or several Ω (Ohm-meter scale: R x 1000) MOTOR (Wire leads removed) NOTE : •...

  • Page 23: Trouble Shooting

    TROUBLE SHOOTING COMPLAINT WHEN YOU RECEIVE A COMPLAINT FROM YOUR CUSTOMER, PLEASE EVALUAT E THE CAREFULLY. IF THE FOLLOWING SYMPTOMS APPLY, PLEASE INSTRUCT THE CUSTOMER IN PROPER USE OF THE MICROWAVE OVEN. THIS MAY ELIMINATE AN UNNECESSARY SERVICE CALL. CAUTIONS 1.
  • Page 24 (Symptoms 1) The following visual conditions indicate a probable defective control circuit. 1. Incomplete segments. • Segment missing. • Partial segment missing. • Digit flickering (NOTE: Slight flickering is normal.) 2. Colon does not turn on or blink. 3. A distinct change in the brightness of one or more numbers in display. 4.
  • Page 25 (Symptoms 2) Oven does not operate at all ; Display window does not display any figures and no input is accepted. CONDITION CHECK RESULT CAUSE REMEDY Replace primary Malfunction of the Check continuity 1. Fuse blows. Continuity. and monitor monitor switch. of monitor switches.
  • Page 26 (Symptoms 3) Display shows all figures set, but oven does not start cooking while desired program times are set and START pad is touched. CONDITION CHECK RESULT CAUSE REMEDY Defective Replace Check continuity 1.Setting time does No continuity. secondary switch. secondary switch.
  • Page 27 (Sy mptoms 4) Oven seems to be operation but output power is low. CONDITION CHECK RESULT CAUSE REMEDY Lower than 90% of Check the Decrease in power Suggest customer Output is low. rating voltage. power source source voltage contact local voltage.
  • Page 28 (Symptoms 5) No microwave oscillation even though oven lamp and fan motor run (Display operates properly) CONDITION CHECK RESULT CAUSE REMEDY Defective P.C.B No microwave Disconnect the Replace P.C.B No continuity. assembly oscillation. wire leads from assembly relay 2 and check continuity Continuity.
  • Page 29 (Symptoms 6) Oven does not cook properly when programmed for the set power level (Operates properly on HIGH) CONDITION CHECK RESULT CAUSE REMEDY Output is full when Defective P.C.B. Replace P.C.B. Disconnect the Abnormal. you set lower assembly. assembly. wire leads from power level.

  • Page 30: Exploded View

    EXPLODED VIEW INTRODUCTION PLATFORM PARTS DOOR PARTS CONTROL PANEL PARTS...
  • Page 31 CONTROL PANEL PARTS...
  • Page 32 DOOR PARTS...
  • Page 33 PLATFORM EXPLODED VIEW...

  • Page 34: Replacement Parts 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. NN-SB636B RUH For Model: Part Safety Ref.No. Midea part No.
  • Page 35 REPLACEMENT PARTS LIST NN-SB636B RUH For Model: Part Safety Ref.No. Midea part No. Pcs/Set Remarks Name&Description AN17470000000811 MAGNETRON AN17470000005503 H.V.TRANSFORMER AN17470000000696 H.V.CAPACITOR AN17470000001007 H.V.DIODE AN17170000004625 NOISE FILTER AN17470000001540 FUSE AN17470000000631 LAMP AN17470000000115 POWER CORD AN12270000008244 THERMOSTAT BRKT. AN17470000001488 THERMOSTAT 120/80℃ *H 120/80℃...

  • Page 36: Schematic Diagram Of P.c.b

    SCHEMATIC DIAGRAM OF P.C.B COM1/SWA INRUSH P54/EINT10 MICRO GRILL P52/EINT8 P51/XIN XOUT P50/XOUT DSDA P00/DSDA DSCL P01/DSCL DOOR P02/AN0/EINT0 SEG7 LAMP P31/COM6/SEG4 P03/SEG26/AN1/EINT1 SEG6 P30/COM7/SEG5 HT_CON SEG5 P27/SEG6 SEG4 P26/SEG7 SEG3 P25/SEG8 SEG2 P24/SEG9 SEG1 P23/SEG10 HUM_O P22/SEG11 HUM_A P21/SEG12/AN15 KEY_IN_4 P20/SEG13/AN14 KEY_IN_3...

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