Sanyo EM-G454EUK Service Manual

Microwave oven with grill

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SERVICE MANUAL

MICROWAVE OVEN WITH GRILL

Read this manual carefully, especially precaution on microwave energy, and follow the procedure

strictly. Careless servicing and testing may expose yourself to the microwave energy leakage.

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 if 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.

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.

ENG 030

EM-G454EUK

Product Code No.

EM-G454EUK

FOREWORD

PRECAUTIONS

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? ) X ? h e ? @

@ @ 5 ? h e 7 @ @ ? h e @ @ H ? h e @ @ H ? h e @ @

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O 2 @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ 6 K ?

? O 2 @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ 6 K ?

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O 2 @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ 6 K

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O 2 @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ 6 K ?

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Table of Contents

Summary of Contents for Sanyo EM-G454EUK

Page 1 ? J @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ ? FILE No. SERVICE MANUAL MICROWAVE OVEN WITH GRILL EM-G454EUK Ch ken D RECT ACCESS Chop...
Page 2: Table Of Contents
TABLE OF CONTENTS Adjustment Procedures........1 Circuit Diagram............ 4 Specifications............2 Test Procedures and Troubleshooting....5-12 Power Output Measurement........ 2 Disassembly Instructions........13-14 Precautions and Repair Service Tips....2 Exploded View and Parts list........15-19 Oven Control Panel..........3 Control Circuit Board..........20 Overall Circuit Diagrams........21 CAUTION MICROWAVE ENERGY PERSONNEL SHOULD NOT BE EXPOSED TO...
Page 3: Specifications
2. SPECIFICATIONS - EM-G454 4.PRECAUTIONS AND REPAIR SERVICE TIPS PRELIMINARY Rated Power Consumption..Microwave 1600W Grill 1300W A.SINCE NEARLY 4,000 VOLTS EXIST IN Microwave Output...... 900W Frequency........2,450MHz ± 50MHz SOME CIRCUITS OF THIS MICROWAVE Power Supply......230V,50Hz OVEN, REPAIRS SHOULD BE CARRIED Rated Current......6.3±10% Amps Micro OUT WITH GREAT CARE (After 15mins.)
Page 4: Oven Control Panel
5. OVEN CONTROL PANEL Def. Dual Grill Time Start Auto 100 150 400 650 750 900 Chicken Pizza Potato DIRECT ACCESS Steaks/ Fish Chops Reheat 1:MEAT 3:FISH 2:POULTRY 4:BREAD Auto Defrost Grill Dual Dual 150w 400w Power Delay Start Notes : Clear/Stop A "beep tone"...
Page 5: Circuit Diagram
6.CIRCUIT DIAGRAM EM-G454 - UK Model OVEN CONDITION 230V DOOR : OPEN 50Hz TOUCH KEY BOARD L1,L2 = 650µH C1 = 0.22µF S101 C2,C3 = 4700PF R = 1MΩ CONTROL CIRCUIT BOARD HIGH VOLTAGE TRANSFORMER HV FUSE MAGNETRON 2M-219H(B) 1.14uF HIGH VOLTAGE RECTIFIER HIGH VOLTAGE CONDENSER 2x500PF/2x1.5uH...
Page 6: Test Procedures And Troubleshooting
7. TEST PROCEDURES AND TROUBLESHOOTING Filament Windings CAUTION - DISCONNECT THE POWER SUPPLY CORD FROM THE WALL OUTLET WHENEVER REMOVING THE CABINET FROM THE UNIT. PROCEED WITH THE TESTS ONLY AFTER DISCHARGING Secondary Winding THE HIGH VOLTAGE CAPACITOR AND REMOVING THE LEAD WIRES FROM THE PRIMARY WINDING OF THE HIGH VOLTAGE TRANSFORMER.
Page 7 COMPONENT CHECKOUT PROCEDURE RESULTS 1) Measure the resistance : Normal readings : With an ohmeter on Rx1 scale. a. Primary Winding ; Approximately 1.7 ohms. b. Filament Winding ; Less than 1 ohm. c. Secondary Winding ; Approximately 92 ohms. 2) Measure the resistance : Normal readings : With an ohm-meter on highest scale.
Page 8 COMPONENT CHECKOUT PROCEDURE RESULTS Measure the resistance : Across two terminals with an ohm-meter on its highest scale. Normal reading : Indicates continuity. HV FUSE Abnormal reading : Indicates infinite ohms. Figure 10 Test TP-1 TP-2 TP-3 TP-4 Measure the voltage : Between test points TP-1,TP-2,TP-3, point CONTROL TP-4 and ground or between TP-5, and TP-6.
Page 9 CHECKOUT PROCEDURE FOR SWITCHES Disconnect the lead wires from the switches and check the continuity of the switches, connecting an ohm-meter to its terminals. SWITCH CHECKOUT PROCEDURES DOOR OPEN DOOR CLOSE Primary Interlock Connect an ohm-meters leads to terminals "COM" and "NO"...
Page 11 -10-...
Page 12 -11-...
Page 13 -12-...
Page 14: Disassembly Instructions
8.DISASSEMBLY INSTRUCTIONS C. REMOVING MAGNETRON (See exploded view on page 16 ) - OVEN MUST BE DISCONNECTED FROM ELECTRI- (1) Remove the antenna complete according to CAL OUTLET WHEN MAKING REPLACEMENTS, B. REMOVING THE ANTENNA. REPAIRS, ADJUSTMENTS, AND CONTINUITY (2) Disconnect the 2 lead wires from the magnetron. CHECKS BEFORE PROCEEDING WITH ANY REPAIR (3) Remove 1 screw securing the duct to the WORK AFTER DISCONNECTING.
Page 15 E. REMOVING DOOR H. REMOVING TURNTABLE MOTOR COVER (Refer to Figures 13 and 14 below ) (1) Remove the 2 screws securing the upper hinge. (1) Turn the unit and cut the 6 joints of the bottom (2) Tilt the top of the door toward you. (3) Lift up the door to remove it.
Page 16: Exploded View And Parts List
9. EXPLODED VIEW AND PARTS LIST CAVITY PARTS ? W 2 @ 6 K ? 7 @ @ @ @ 6 X ? @ @ @ @ @ @ ) K ? ? @ @ @ @ @ @ @ @ 6 K ? ? @ @ @ @ @ @ @ @ @ @ 6 K ? ? @ @ @ @ ? I 4 @ @ @ @ @ 6 X ? ? @ @ @ @ ? e ? I ' @ @ @ ) K...
Page 17 SWITCHES AND MICROWAVE PARTS O 2 @ @ @ @ @ @ @ @ @ @ @ @ @ 6 X ? O 2 @ @ @ @ @ @ @ @ @ 6 K ? ? O 2 @ @ 6 K ? ? W 2 @ @ @ @ @ @ 0 M ? h ? I 4 @ @ @ @ @ @ @ ) K ? O &...
Page 18 MICROWAVE PARTS EM-G454 Part No. Description Q'ty 617 196 9320 Transformer 617 156 3658 Special Screw 617 167 1438 Bottom Plate ------------------ Gear Motor Cover 617 144 5435 Foot Cushion Assembly 617 166 7493 Bottom Hinge 411 156 5601 SCR S-TPG PAN+F+S 4x10 3 -17-...
Page 19 DOOR PARTS Inner Door Pane a ways O 2 @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ 6 K O 2 @ @ @ @ @ @ @ @ @ @ @ @ @ 6 K ? O 2 @ @ @ @ @ 6 K ? W 2 @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ 6 K ? ? W &...
Page 20 CONTROL PANEL PARTS A u t D e f. D u a l G r il l T im S t a r 1 5 0 3 0 0 4 5 0 7 0 0 8 0 0 L i q u i d i l l e d R i c...
Page 21: Control Circuit Board
10.CONTROL CIRCUIT BOARD EM-G454 Model Version Spares No. M.Processor EM-G454 617 206 9357 LC8799A -20-...
Page 22: Overall Circuit Diagrams
11. OVERALL CIRCUIT DIAGRAM EM-G454 - UK Model. R104 1MΩ IC 11 LC8799A -21-...
Page 23 Please Note All the information that appears in this service manual was correct at the time of production. SANYO Electric Manufacturing reserves the right to make changes to parts or processes in order to maintain their policy of continuing improvement.

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