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CAUTION

CAUTION

CAUTION

CAUTION

CAUTION

W

W

W

W

WARNING TO SER

ARNING TO SER

ARNING TO SER

ARNING TO SER

ARNING TO SERVICE TECHNICIANS

VICE TECHNICIANS

VICE TECHNICIANS

VICE TECHNICIANS

VICE TECHNICIANS

PRECAUTIONS TO BE OBSERVED BEFORE AND DURING

SERVICING TO AVOID POSSIBLE EXPOSURE TO

EXCESSIVE MICROWAVE ENERGY

(a)

Do not operate or allow the oven to be operated with the door open.

(b)

Make the following safety checks on all ovens to be serviced before activating the magnetron or other
microwave source, and make repairs as necessary  :
(1)  Interlock operation, (2) proper door closing,  (3) seal and sealing surfaces (arcing, wear, and other damage),
(4) damage to or loosening of 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 by procedures described in this manual before
the oven is released to the owner.

(e)

A microwave leakage check to verify compliance with the Federal performance standard should be performed
on each oven prior to release to the owner.

REFERENCE NO. SM-860304

 SER

 SER

 SER

 SER

 SERVICE MANUAL

VICE MANUAL

VICE MANUAL

VICE MANUAL

VICE MANUAL

    Micr

    Micr

    Micr

    Micr

    Microwave Oven

owave Oven

owave Oven

owave Oven

owave Oven

EM-F3400SW 

EM-F3400SW 

EM-F3400SW 

EM-F3400SW 

EM-F3400SW 

(U.S.A.)

(U.S.A.)

(U.S.A.)

(U.S.A.)

(U.S.A.)

  Pr

  Pr

  Pr

  Pr

  Product 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

File No :

File No :

File No :

File No :

File No :

Summary of Contents for EM-A5200SW

Page 1: ...ion within the microwave generating compartments check the magnetron wave guide or transmission line and cavity for proper alignment integrity andconnections d Any defective or misadjusted components in the interlock monitor door seal and microwave generation and transmission systems shall be repaired replaced or adjusted by procedures described in this manual before the oven is released to the ow...

Page 2: ...ener owave ener owave ener owave energy emission gy emission gy emission gy emission gy emission On every service calls check for microwave energy emission must be made according to the following manner Measur Measur Measur Measur Measurement of ener ement of ener ement of ener ement of ener ement of energy emission gy emission gy emission gy emission gy emission Measurement must be made with the ...

Page 3: ...gy leakage after the repair or adjustment NOTE NOTE NOTE NOTE NOTE Detector to be used at the service center is NARDA 8100 8200 or the equivalent PRIMAR PRIMAR PRIMAR PRIMAR PRIMARY INTERLOCK SWITCH INTERLOCK Y INTERLOCK SWITCH INTERLOCK Y INTERLOCK SWITCH INTERLOCK Y INTERLOCK SWITCH INTERLOCK Y INTERLOCK SWITCH INTERLOCK MONITOR SWITCH AND DOOR SENSING SWITCH MONITOR SWITCH AND DOOR SENSING SWIT...

Page 4: ...D AIRS SHOULD BE CARRIED OUT WITH GREA BE CARRIED OUT WITH GREA BE CARRIED OUT WITH GREA BE CARRIED OUT WITH GREA BE CARRIED OUT WITH GREAT CARE T CARE T CARE T CARE T CARE B B B B B TO A TO A TO A TO A TO AVOID POSSIBLE EXPOSURE TO MICROW VOID POSSIBLE EXPOSURE TO MICROW VOID POSSIBLE EXPOSURE TO MICROW VOID POSSIBLE EXPOSURE TO MICROW VOID POSSIBLE EXPOSURE TO MICROWA A A A AVE VE VE VE VE ENERG...

Page 5: ... R E T N I Y R A D N O C E S E D A M H C T I W S Y R A M I R P K C O L R E T N I H C T I W S K C O L R E T N I R O T I N O M H C T I W S R O O D G N I S N E S H C T I W S 2 Y A L E R D N O C T I N O I M O C M O C M O C M O C O N C N O N O N N E P O R O O D E S O L C R O O D ...

Page 6: ...ROM Y CORD FROM Y CORD FROM Y CORD FROM Y CORD FROM THE W THE W THE W THE W THE WALL OUTLET WHENEVER REMOVING THE ALL OUTLET WHENEVER REMOVING THE ALL OUTLET WHENEVER REMOVING THE ALL OUTLET WHENEVER REMOVING THE ALL OUTLET WHENEVER REMOVING THE CABINET FROM THE UNIT CABINET FROM THE UNIT CABINET FROM THE UNIT CABINET FROM THE UNIT CABINET FROM THE UNIT PROCEED WITH THE PROCEED WITH THE PROCEED WI...

Page 7: ... a 9 volt battery NOTE NOTE NOTE NOTE NOTE Some digital meter may show over even in a forward direction because low measuring voltage of meter does not allow the meter current to pass through the High Voltage Diode Abnormalreading Indicates continuity or infinite Ohms in both directions Measure the voltage Between test point TP 1 TP 2 and Ground See Control Circuit Board on page 19 NOTE NOTE NOTE ...

Page 8: ...ure 9 Figure 9 Figure 9 Ohm Meter Ohm Meter Ohm Meter Ohm Meter Ohm Meter 6 TERMINALS OF FPC CONNECTOR TERMINALS OF FPC CONNECTOR TERMINALS OF FPC CONNECTOR TERMINALS OF FPC CONNECTOR TERMINALS OF FPC CONNECTOR CHECKOUT PROCEDURE FOR SWITCHES CHECKOUT PROCEDURE FOR SWITCHES CHECKOUT PROCEDURE FOR SWITCHES CHECKOUT PROCEDURE FOR SWITCHES CHECKOUT PROCEDURE FOR SWITCHES Disconnect the lead wires fro...

Page 9: ...uit Board Each resistance OK Resistance incorrect ON or OFF Replace Touch Key Board Normal Touch Key Board Normal Control Circuit Board Replace Control Circuit Board Voltage incorrect Check power supply voltage on Control Circuit Board See page 5 Each voltage OK Touch Key Board Check resistance of Touch Key Board See page 6 120 volts Check 120VAC power supply of connector S1 between Pin 1 and Pin ...

Page 10: ...emoving the wire leads from terminals of H V Transformer AC 120 Volts No continuity Runs Runs Check continuity of connector S102 between Pins O and BL with the door closed after removing connector S102 from Control Circuit Board 2 PROBLEM Cooking operation will not start Door Sensing Switch Poor contact Contact OK Correct seating Normal contact Adjust or replace Door Sensing Switch See page 1 PROB...

Page 11: ...tput b a Replace Magnetron Normal Magnetron Defective H V Capacitor or H V Diode Replace H V Capacitor or H V Diode Normal H V Capacitor or H V Diode Normal operation Replace Thermal Protector for Magnetron or Thermal Protector for Cavity Normal thermal protector for Magnetron or Thermal Protector for Cavity Temporarily short across terminals of Thermal Protector for Magnetron or Thermal Protector...

Page 12: ...asure voltage between white wire lead and black wire lead for primary winding of H V Transformer after removing the wire leads from terminals of H V Transformer Runs 6 PROBLEM No buzzing by touching keys and at the end of cooking 120V Replace Control Circuit Board Normal Control Circuit Board Runs Check normal operation of Control Circuit Board Replace Control Circuit Board Normal Control Circuit ...

Page 13: ...AFTER AIR WORK AFTER AIR WORK AFTER AIR WORK AFTER DISCONNECTING W DISCONNECTING W DISCONNECTING W DISCONNECTING W DISCONNECTING WAIT A AIT A AIT A AIT A AIT AT LEAST 1 MINUTE UNTIL T LEAST 1 MINUTE UNTIL T LEAST 1 MINUTE UNTIL T LEAST 1 MINUTE UNTIL T LEAST 1 MINUTE UNTIL THE CAP THE CAP THE CAP THE CAP THE CAPACITOR IN THE HIGH VOL ACITOR IN THE HIGH VOL ACITOR IN THE HIGH VOL ACITOR IN THE HIGH...

Page 14: ...rom the cavity or wave guide use a proper care so that the dome of the magnetron does not hit any adjacent parts of microwave oven 2 Make sure that the contact face of the magnetron gasket is free from any damage or deformation 3 Adjust the position of the magnetron properly so that it correctly sits in place and the magnetron gasket is in contact with the mounting rim evenly 4 While holding the m...

Page 15: ...agnetron F F F F F REMOVING CONTROL CIRCUIT BOARD REMOVING CONTROL CIRCUIT BOARD REMOVING CONTROL CIRCUIT BOARD REMOVING CONTROL CIRCUIT BOARD REMOVING CONTROL CIRCUIT BOARD See exploded view on page 18 and Figure 13 1 Remove the connector S1 S102 and the connector for the relay 2 from the control circuit board 2 Remove 1 screw securing the control panel complete to theovencavity 3 Remove the FPC ...

Page 16: ...the door check for microwave energy leakagewithaleakagedetector Microwaveenergy leakage must be below the limit of 4mW cm2 to allow for measurement uncertainty I I I I I DISASSEMBLING DOOR DISASSEMBLING DOOR DISASSEMBLING DOOR DISASSEMBLING DOOR DISASSEMBLING DOOR Figure 15 1 Insert a thin flat blade screwdriver between the choke dielectric and the door main frame and lift up the choke dielectric ...

Page 17: ... 4 x 10 Z1 1 6 617 228 8345 Oven Cavity Not Service Part 1 7 617 221 3590 GearMotor 1 8 411 010 5808 SCR EVR PAN 4 x 10 Z1 2 9 617 138 5601 Bottom Plate Not Service Part 1 1 0 617 221 6089 Plastic Foot with Canoe Clip 4 1 1 411 011 0802 Bolt Hex SW W5 x 14 Z1 2 1 2 617 180 6137 Hinge Lower 1 1 3 411 089 2500 Washer F 5 x 10 x 0 8 1 Key Part No Description Q ty No 1 4 617 120 8481 Insulation Sheet ...

Page 18: ...Z1 9 2 617 229 9020 H V Transformer N6T P410 1 3 617 199 8283 Stay Cavity Magnetron 1 4 411 006 6604 SCR TPG PAN 3 x 6 Z1 1 5 617 129 1001 Thermostat Magnetron 135o C 1 6 415 002 9508 Magnetron 2M253H M N 1 7 423 020 3408 Fuse 125V 20A 1 8 617 233 0006 Fuse Holder 1 9 617 221 3606 Lead Wire Ass y including Diode 1 10 617 162 1990 Blower Base 1 11 617 197 6670 H V Capacitor including Resistor 1 0 9...

Page 19: ...ch 1 Key Part No Description Q ty No 1 617 229 2403 Door Cover 1 2 617 181 4170 Door Panel 1 3 617 229 2007 Door Main Frame Also 1 order Door Sheet when replacing Door Main Frame 4 617 124 0948 Choke Dielectric 1 17 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 T...

Page 20: ...PLACE PARTS IDENTIFIED BY A TRIPLE ASTERISK Key Part No Description Q ty No 4 617 151 4377 Control Base 1 5 411 160 6205 SCR TPG TRS SRT 4 x 10 Z1 1 6 617 230 2324 Power Control Circuit Board 1 7 411 129 5805 SCR TPG BIN 3 x 10 Z1 1 8 617 080 9559 Spring Door Release Lever 1 9 617 229 3691 Door Release Lever 1 Key Part No Description Q ty No 1 617 230 7787 Control Sheet Also order 1 Touch Key Boar...

Page 21: ...IT BOARD CONTROL CIRCUIT BOARD CONTROL CIRCUIT BOARD CONTROL CIRCUIT BOARD CONTROL CIRCUIT BOARD Part No 617 230 2324 617 230 2324 617 230 2324 617 230 2324 617 230 2324 4 0 8 0 0 4 0 8 0 0 4 0 8 0 0 4 0 8 0 0 4 0 8 0 0 ...

Page 22: ... 0549 Relay DU12D1 1PR 1 RS1 617 128 3372 CeramicOscillator 1 S 1 617 169 4109 Connector 1 S101 617 126 8959 Connector 1 S102 617 111 1392 Connector 1 PT1 617 230 4984 Step DownTransformer 1 P6K P410 2 617 178 4268 PartBase 1 JB1 2 617 132 5744 Noise Filter 2 J9 13 617 079 4299 Jumper 7 16 17 J101 103 617 079 4237 Jumper 3 CONTROL CIRCUIT BOARD CONTROL CIRCUIT BOARD CONTROL CIRCUIT BOARD CONTROL C...

Page 23: ... 21 9 9 9 9 9 OVERALL CIRCUIT DIAGRAM OVERALL CIRCUIT DIAGRAM OVERALL CIRCUIT DIAGRAM OVERALL CIRCUIT DIAGRAM OVERALL CIRCUIT DIAGRAM ...

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