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File No : File No : File No : File No : File No :
SER SER SERVICE MANUAL VICE MANUAL VICE MANUAL Micr Micr Microwave Oven owave Oven owave Oven EM-F3400SW EM-F3400SW EM-F3400SW (U.S.A.) (U.S.A.) (U.S.A.)
SER SERVICE MANUAL VICE MANUAL Micr Microwave Oven owave Oven EM-F3400SW EM-F3400SW (U.S.A.) (U.S.A.)
P P P P Pr r r r roduct Code No. oduct Code No. oduct Code No. oduct Code No. oduct Code No. 437 450 57 437 450 57 437 450 57 437 450 57 437 450 57
CAUTION CAUTION
CA
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In the area emitting the highest reading, switch the meter CAUTION CAUTION CAUTION CAUTION CAUTION to SLOW RESPONSE, and take a reading for minimum of three (3) seconds. We recommended the pattern outline For micr For micr For micr For micr For microwave ener owave ener owave ener owave ener owave energy emission gy emission gy emission gy emission gy emission shown below when the door surface is surveyed. On every service calls, check for microwave energy NOTE NOTE NOTE NOTE NOTE : Periodical
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- TABLE OF CONTENTS - Adjustment Procedures ................................................... 1 Test Procedures and Troubleshooting.................... 4 10 ~ Specifications .................................................................. 2 Disassembly Instructions ....................................... 11 14 ~ Power Output Measurement ........................................... 2 Exploded View and Parts List ................................ 15 20 ~ Precautions and Repair Service Tips ..
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2. 2. 2. SPECIFICA SPECIFICA SPECIFICATIONS TIONS TIONS 4. 4. 4. 4. 4.PRECAUTIONS AND REP PRECAUTIONS AND REP PRECAUTIONS AND REP PRECAUTIONS AND REP PRECAUTIONS AND REPAIR SER AIR SER AIR SER AIR SER AIR SERVICE TIPS VICE TIPS VICE TIPS VICE TIPS VICE TIPS 2. 2. SPECIFICA SPECIFICATIONS TIONS PRELIMINAR PRELIMINAR PRELIMINAR PRELIMINAR PRELIMINARY Y Y Y Y Rated Power Consumption ..1480W. A. A. A. A. A. SINCE NEARL SINCE NEARL SINCE NEARL SINCE NEARL SINCE NEARLY 2,000 VOL Y 2,000 VOL Y 2,000 VO
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5. CIRCUIT DIAGRAM Figure 2 Figure 2 Figure 2 Figure 2 Figure 2 SECONDARY INTERLOCK PRIMARY INTERLOCK DOOR INTERLOCK MONITOR SENSING RELAY 2 SWITCH MADE • SWITCH SWITCH SWITCH CM OM CM O CM O CO CT ONDIN IO NC O NONO N DOOR OPEN • DOOR CLOSE ••• - 3 -
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Filament Windings 6. TEST PROCEDURES AND TROUBLESHOOTING 6. TEST PROCEDURES AND TROUBLESHOOTING 6. TEST PROCEDURES AND TROUBLESHOOTING 6. TEST PROCEDURES AND TROUBLESHOOTING 6. TEST PROCEDURES AND TROUBLESHOOTING CAUTION CAUTION CAUTION CAUTION CAUTION - DISCONNECT THE POWER SUPPL - DISCONNECT THE POWER SUPPL - DISCONNECT THE POWER SUPPL - DISCONNECT THE POWER SUPPL - DISCONNECT THE POWER SUPPLY CORD FROM Y CORD FROM Y CORD FROM Y CORD FROM Y CORD FROM THE W THE W THE W THE W THE WALL OUTLE
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COMPONENT COMPONENT CHECKOUT PROCEDURE CHECKOUT PROCEDURE RESUL RESULT T COMPONENT COMPONENT COMPONENT CHECKOUT PROCEDURE CHECKOUT PROCEDURE CHECKOUT PROCEDURE RESUL RESUL RESULT T T Measure the resistance : Across two terminals Normal reading : with an Ohm-Meter on highest scale. Momentarily indicates several Ohms, HIGH-VOLTAGE and gradually returns to 10 Meg-Ohms. CAPACITOR incl
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COMPONENT COMPONENT COMPONENT COMPONENT COMPONENT CHECKOUT PROCEDURE CHECKOUT PROCEDURE CHECKOUT PROCEDURE CHECKOUT PROCEDURE CHECKOUT PROCEDURE RESUL RESUL RESUL RESUL RESULT T T T T When When not Measure the resistance between terminals of touched touched Resistance FPC connector after removing it from S101. value Less than More than (Figure 9). 1K Ohms 1 MEG Ohms
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- 7 - B. TROUBLESHOOTING B. TROUBLESHOOTING B. TROUBLESHOOTING B. TROUBLESHOOTING B. TROUBLESHOOTING STEP STEP SEQUENCE SEQUENCE SEQUENCE RESUL RESUL RESULT T T STEP STEP STEP SEQUENCE SEQUENCE RESUL RESULT T (1) PROBLEM No display or mis-display in the display window by touching the keys. a Runs 0 volt. Check continuity of Fuse, Replace it if necessary. Thermal Protector for Magnetron, Thermal Protector for Cavity and AC Power Cord. If the Fuse is blown, see “E, Check 120VAC power supply
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- 8 - SEQUENCE SEQUENCE RESUL RESULT T STEP STEP STEP STEP STEP SEQUENCE SEQUENCE SEQUENCE RESUL RESUL RESULT T T (2) PROBLEM Cooking operation will not start. CHECK : 1. Power Supply to Oven. a 2 . Primary Interlock Switch. 3 . Thermal Protector for Magnetron and PROBLEM Thermal Protector for Cavity. 3-a Contact OK. Continuity Check contact Door Sensing Switch. OK. of Connector S102. Correct Runs Poor Normal Check continuity of connector seating. contact. contact. S102 between Pins (O and BL)
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- 9 - STEP STEP STEP STEP STEP SEQUENCE SEQUENCE SEQUENCE SEQUENCE SEQUENCE RESUL RESUL RESUL RESUL RESULT T T T T b Runs Normal H.V. Replace Normal Capacitor or Magnetron. Magnetron. H.V. Diode. H.V. Transformer. Check H.V. Capacitor or H.V. Resistance Diode with an Ohm-Meter after OK. removing lead wires. Normal H.V. (See page 5) Defective Runs Replace H.V. Capacitor or H.V. Capacitor H.V. Diode. Capacitor or Check resistance of each or H.V. Diode. H.V. Diode. winding after removing lead wires
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- 10 - STEP STEP STEP STEP STEP SEQUENCE SEQUENCE SEQUENCE SEQUENCE SEQUENCE RESUL RESUL RESUL RESUL RESULT T T T T (5) PROBLEM The Magnetron operates on high level when a lower cook power is selected. No problem. a Measure water temperature rise exactly. H.V. Transformer. Voltage cycles on and off. Touch “START” key and measure voltage between Set power level white wire lead and black wire at “50”. lead for primary winding of 120V H.V. Transformer after Replace Control Normal Control Runs remo
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7. 7. 7. 7. 7. DISASSEMBL DISASSEMBL DISASSEMBL DISASSEMBL DISASSEMBLY INSTRUCTIONS Y INSTRUCTIONS Y INSTRUCTIONS Y INSTRUCTIONS Y INSTRUCTIONS • OVEN MUST BE DISCONNECTED FROM ELECTRICAL OVEN MUST BE DISCONNECTED FROM ELECTRICAL OVEN MUST BE DISCONNECTED FROM ELECTRICAL OVEN MUST BE DISCONNECTED FROM ELECTRICAL OVEN MUST BE DISCONNECTED FROM ELECTRICAL B. B. B. B. B. REMOVING PRIMAR REMOVING PRIMAR REMOVING PRIMAR REMOVING PRIMAR REMOVING PRIMARY INTERLOCK SWITCH AND Y INTERLOCK SWITCH
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C. C. C. REMOVING BLOWER MOTOR REMOVING BLOWER MOTOR REMOVING BLOWER MOTOR C. C. REMOVING BLOWER MOTOR REMOVING BLOWER MOTOR (Figures 11 (Top View) and 12). Duct (mag. exhaust) Blower Base (1) Remove screw securing the stay. (2) Disconnect all lead wires from the blower motor and H.V. capacitor. Thermal Protector (3) Remove 3 screws securing the blower base and Screw disengage 3 hooks from the rear plate of cavity (Figure 12). (4) Remove 1 screw securing the blower motor with the blower base. D.
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E. E. E. REMOVING FUSE REMOVING FUSE REMOVING FUSE E. E. REMOVING FUSE REMOVING FUSE Remove the 20A fuse with a screwdriver. NOTE NOTE NOTE NOTE NOTE -- When replacing the 20A fuse, be sure to use an exact repair part. Control Base -- If the 20A fuse blows immediately, check the primary interlock switch, the relay 2 (on the control circuit board) and the interlock monitor switch according to, “CHECKOUT PROCEDURE “CHECKOUT PROCEDURE FOR SWITCHES” FOR SWITCHES” “CHECKOUT PR
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H. H. H. H. H. REMOVING DOOR REMOVING DOOR REMOVING DOOR REMOVING DOOR REMOVING DOOR J. J. J. J. J. REMOVING CA REMOVING CA REMOVING CA REMOVING CA REMOVING CAVITY COVER VITY COVER VITY COVER VITY COVER VITY COVER (Figure 16) (1) Remove 2 hex nuts securing the upper hinge. (1) Remove a screw from the cavity compartment. (2) Tilt the top of the door toward you. (3) Lift up the door to remove it. NOTE NOTE NOTE NOTE NOTE - After replacing the door, be sure to check
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8. 8. 8.EXPLODED VIEW AND P EXPLODED VIEW AND P EXPLODED VIEW AND PAR AR ARTS LIST TS LIST TS LIST 8. 8.EXPLODED VIEW AND P EXPLODED VIEW AND PAR ARTS LIST TS LIST CAVITY PARTS * * * ALL SERVICE ON MICROWAVE OVENS SHOULD BE PERFORMED BY A QUALIFIED TECHNICIAN USING APPROVED TESTING EQUIPMENT. CUSTOMERS SHOULD NOT ATTEMPT TO REPLACE PARTS IDENTIFIED BY A TRIPLE ASTERISK (***). Key Key Part No. Description Q’ty Part No. Description Q’ty No. No. 1 617 228 8321 Cabinet 1 14 617 120 8481 Insul
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SWITCHES AND MICROWAVE PARTS *** ALL SERVICE ON MICROWAVE OVENS SHOULD BE PERFORMED BY A QUALIFIED TECHNICIAN USING APPROVED TESTING EQUIPMENT. CUSTOMERS SHOULD NOT ATTEMPT TO REPLACE PARTS IDENTIFIED BY A TRIPLE ASTERISK (***). Key Key Part No. Description Q’ty Part No. Description Q’ty No. No. 1 411 082 5201 SCR TPG TRS 4 x 10 Z1 9 17 617 197 7417 Blower Motor 1 2 617 229 9020 H.V Transformer,*** N6T-P410 1 18 411 082 5201 SCR TPG TRS 4 x 10 Z1 2 3 617 199 8283 Stay, Cavity & Magnetron
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DOOR PARTS * * * ALL SERVICE ON MICROWAVE OVENS SHOULD BE PERFORMED BY A QUALIFIED TECHNICIAN USING APPROVED TESTING EQUIPMENT. CUSTOMERS SHOULD NOT ATTEMPT TO REPLACE PARTS IDENTIFIED BY A TRIPLE ASTERISK (***). Key Key Part No. Description Q’ty Part No. Description Q’ty No. No. 1 617 229 2403 Door Cover*** 1 5 617 222 0123 Door Sheet 1 2 617 181 4170 Door Panel*** 1 6 411 054 1903 Nut Hex + Flg W / SRT 5*** 2 3 617 229 2007 Door Main Frame*** (Also 1 7 617 180 6151 Hinge, Upper*** 1 ord
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CONTROL PANEL PARTS * * * ALL SERVICE ON MICROWAVE OVENS SHOULD BE PERFORMED BY A QUALIFIED TECHNICIAN USING APPROVED TESTING EQUIPMENT. CUSTOMERS SHOULD NOT ATTEMPT TO REPLACE PARTS IDENTIFIED BY A TRIPLE ASTERISK (***). Key Key Part No. Description Q’ty Part No. Description Q’ty No. No. 1 617 230 7787 Control Sheet*** (Also order 1 4 617 151 4377 Control Base*** 1 Touch Key Board when replacing 5 411 160 6205 SCR TPG TRS+SRT 4 x 10 Z1 1 Control Sheet) 6 617 230 2324 Power & Control Circ
