Sanyo EM-P672WS Service Manual Download Page 23 | Manualshive

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9 . OVERALL CIRCUIT DIAGRAM

OVERALL CIRCUIT DIAGRAM

OVERALL CIRCUIT DIAGRAM

OVERALL CIRCUIT DIAGRAM

OVERALL CIRCUIT DIAGRAM

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Summary of Contents for EM-P672WS

Page 1: ...ction 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 ...

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: ... 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 SWITCH...

Page 4: ...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 ENERGY ...

Page 5: ... 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 Figure 2 Figure 2 Figure 2 Figure 2 Figure 2 WIRING COLOR BK BLACK O ORANGE BL BLUE W WHITE Y YELLOW R RED ...

Page 6: ... 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 WITH ...

Page 7: ...OTE 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 TP 3 or TP 4 and Ground between TP 5 and TP 6 See Control Circuit Board on page 19 NOTE NOTE NOTE NOTE...

Page 8: ...E FOR SWITCHES CHECKOUT PROCEDURE FOR SWITCHES CHECKOUT PROCEDURE FOR SWITCHES CHECKOUT PROCEDURE FOR SWITCHES CHECKOUT PROCEDURE FOR SWITCHES Disconnect the lead wires from the switches and check for the continuity of the switches connecting an Ohm Meter to its terminals SWITCHES SWITCHES SWITCHES SWITCHES SWITCHES CHECKOUT PROCEDURES CHECKOUT PROCEDURES CHECKOUT PROCEDURES CHECKOUT PROCEDURES CH...

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: ...ntrol Circuit Board Normal Control Circuit Board 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 PROBLEM 3 a ...

Page 11: ...ut 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 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 for Cavity by usin...

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: ...or 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 to rel...

Page 17: ...08 SCR EVR PAN 4 x 10 Z1 2 9 617 181 5986 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 1 1 5 617 144 4476 Turn Table Shaft 1 1 6 617 199 1314 Roller Base Assy 1 1 7 617 201 2704 Rotatin...

Page 18: ...4 x 10 Z1 9 2 617 213 6936 H V Transformer N6T P691 1 3 617 162 1945 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 3308 Magnetron 2M247H B 1 7 423 021 3704 Fuse 250V 20A 1 8 617 137 8269 Fuse Holder 1 9 617 201 6382 Lead Wire Ass y including Diode 1 10 617 162 1990 Space Partition Blower 1 11 617 205 1840 H V Capacitor includin...

Page 19: ...ch 1 Key Part No Description Q ty No 1 617 207 0322 Door Cover 1 2 617 207 0360 Door Panel 1 3 617 201 2421 Door Main Frame Also 1 order Door Sheet when replacing Door Main Frame 4 617 124 6490 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 4 617 207 0377 Control Base 1 5 411 160 6205 SCR TPG TRS SRT 4 x 10 Z1 1 6 617 220 2952 Power Control Circuit Board 1 7 411 129 5805 SCR TPG BIN 3 x 10 Z1 2 8 617 080 9559 Spring Door Release Lever 1 9 617 207 0353 Door Release Lever 1 Key Part No Description Q ty No 1 617 221 5235 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 617 220 2952 617 220 2952 617 220 2952 617 220 2952 617 220 2952 3 2 9 0 0 3 2 9 0 0 3 2 9 0 0 3 2 9 0 0 3 2 9 0 0 ...

Page 22: ...1 617 169 4109 Connector 1 S101 617 126 8959 Connector 11P 1 S102 617 111 1392 Connector 2 3P Male 1 PT1 617 178 3933 Step Down Transformer 1 P6TK N101 2 617 079 4107 Part Base 1 J1 6 617 079 4299 Jumper 6 J101 109 617 079 4237 Jumper 9 Key No Order Part No Description Q ty INTEGRATED CIRCUIT IC11 409 452 0901 IC LM8846 124FP 1 TRANSISTORS Q104 405 035 4809 2SC1685 Q TP 1 Q101 105 405 082 4609 DTA...

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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