Page 2 - CAUTION; WARNING TO SERVICE TECHNICIANS; PRECAUTIONS TO BE OBSERVED BEFORE; a. Do not operate or allow the oven to be operated with the door open.; information contained in this manual.
CAUTION WARNING TO SERVICE 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 activat...
Page 3 - TABLE OF CONTENTS; FOREWORD
-2- MODEL 721.62252 721.62259721.62253721.63263 MECHANICAL SERVICE INFORMATION TABLE OF CONTENTS 1. Adjustment Procedures - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - ...
Page 4 - ADJUSTMENT PROCEDURES; TEST THE MICROWAVE ENERGY LEAKAGE
1. ADJUSTMENT PROCEDURES To avoid possible exposure to microwave energyleakage, adjust the door latches and interlock switches,using the following procedure. ONLY AUTHORIZED SERVICE PERSONNELSHOULD MAKE THIS ADJUSTMENT. The Interlock Monitor and Primary Interlock Switch actsas the final safety switc...
Page 6 - PRECAUTIONS ON INSTALLATION; GENERAL PRECAUTIONS IN USE
2. PRECAUTIONS ON INSTALLATION (Figure 2) A. Plug the power supply cord into a 120 V AC, 60 Hz, single-phase power source with a capacity of at least 15amperes. B. Since the unit weights about 26 lbs, be sure to place it on a sturdy and flat surface. C. Avoid placing the unit in a location where the...
Page 7 - SWITCH CHART; SPECIFICATIONS
-6- Rated Power Consumption - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1450W maximumOutput - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1100W maximum (*IEC60705 Rating standard) Adjustable 110W thro...
Page 10 - B. MATRIX CIRCUIT FOR TOUCH KEY BOARD; Figure 4
Page 11 - Figure 5
-10- 7. OPERATING PROCEDURESA. OVEN CONTROL PANEL Figure 5 7 8 9 10 11 12 13 14 3 4 5 6 2 1 1. DISPLAY. The Display includes a clock and indicators that tell you time of day, cooking timesettings, and cooking functions selected. 2. QUICK TOUCH SENSOR. This pad allows you to cook most of your favorit...
Page 13 - EQUIPMENT
8. PROCEDURE FOR MEASURING MICROWAVE ENERGY LEAKAGE A. CAUTIONS (1) Be sure to check a microwave emission prior to servicing the oven if the oven is operative prior toservicing. (2) The service personnel should inform the manufacturer, importer, or assembler of any certified oven unit foundto have a...
Page 14 - SPECIAL TIP; • This oven used the button head screws.
D. MEASUREMENT WITH A FULLY ASSEMBLED OVEN (1) After all components, including the outer panels, are fully assembled, measure for microwave energyleakage around the door viewing window, the exhaustopening and air inlet openings. (2) Microwave energy leakage must not exceed the values prescribed belo...
Page 15 - Figure 8; Figures 9
9. DISASSEMBLY INSTRUCTIONS IMPORTANT NOTES: UNIT MUST BE DISCONNECTED FROM ELECTRICALOUTLET WHEN MAKING REPAIRS, RE-PLACEMENTS,ADJUSTMENTS AND CONTINUITY CHECKS. WAIT ATLEAST ONE MINUTE, UNTIL THE HIGH VOLTAGECAPACITOR IN THE HIGH VOLTAGE POWERSUPPLY HAS FULLY DISCHARGED. THE CAPACITORSHOULD BE DIS...
Page 16 - C. DOOR GROSS ASSEMBLY REMOVAL; CAUTION : Be careful not to damage door seal plate by
-15- C. DOOR GROSS ASSEMBLY REMOVAL (1) Open the door.(2) Remove the choke cover very carefully with a flat-blade screwdriver. CAUTION : Be careful not to damage door seal plate by screwdriver. (3) Lift up and push the door. NOTE: 1. After replacing the door, be sure to check that the primary switch...
Page 17 - E. SUCTION GUIDE MAIN ASSEMBLY
D. MAGNETRON REMOVAL 1) Disconnect the leadwire from the magnetron.2) Carefully remove the mounting screws holding the magnetron and the waveguide. 3) Remove the magnetron ASSEMBLY until the tube is clear from the waveguide. NOTE: 1. When removing the magnetron, make sure its dome does not hit any a...
Page 18 - F. FAN MOTOR ASSEMBLY REMOVAL; G. HIGH VOLTAGE TRANSFORMER REMOVAL
F. FAN MOTOR ASSEMBLY REMOVAL NOTE: To repair any of them, the Suction Guide Main ASS’Y should be removed first.1) Disconnect the wire lead from fan motor.2) Remove the fan.3) Remove the two screws holding the fan motor assembly to the suction guide ass’y. G. HIGH VOLTAGE TRANSFORMER REMOVAL 1) Disc...
Page 19 - • Check for play in the door by pushing the door
I. HIGH VOLTAGE CAPACITOR AND DIODE REMOVAL 1) Discharge the high voltage capacitor.2) Disconnect the wire lead from the high voltage capacitor.3) Remove the screw holding the high voltage capacitor bracket. J. REMOVING THE TURNTABLE MOTOR 1) Remove the glass turntable & the rotating ring ASS’Y ...
Page 20 - INTERLOCK CONTINUITY TEST
-19- NO COM NC COM NO COM A. PRIMARY INTERLOCK SWITCH TEST When the door release button is depressed slowly withthe door closed, an audible click should be heard at the same time or successively at intervals. When thebutton is released slowly, the latches should activatethe switches with an audible ...
Page 21 - TEST AND CHECKOUT PROCEDURES, AND TROUBLESHOOTING; CAUTIONS; COMPONENTS TEST
-20- 11. TEST AND CHECKOUT PROCEDURES, AND TROUBLESHOOTING A. TEST PROCEDURES 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 CAPACITORAND REMOVING THE WIRE LEADS FROM THE PRIMA...
Page 24 - B. CHECKOUT PROCEDURES; PROBLEMS
B. CHECKOUT PROCEDURES (1) CHECKOUT PROCEDURES FOR FUSE BLOWING CAUTION: REPLACE BLOWN FUSE WITH 20 AMPERE FUSE. NOTES: - If the fuse is blown by an improper switch operation, replace the defective switches and the fuse at the same time. After replacing the defective switches with new ones, make sur...
Page 26 - (3) CHECKOUT PROCEDURES FOR CIRCUIT BOARD
(3) CHECKOUT PROCEDURES FOR CIRCUIT BOARD The following symptoms indicate a defective circuitboard.(1) The start function fails to operate but the high voltage Systems, the interlock switches, the doorsensing and the relay check good. (2) The unit with a normal relay continuously operates.(3) The bu...
Page 27 - CONDITION; CAUSE
-26- CONDITION Microwave oven does not work. Inserting many plugs into oneoutlet and using them at thesame time (blown fuse or breaker) Microwave oven plug is notinserted tightly. Output power is too low. Low AC input voltage. Food temperature is too low. Using metallic ware andallowing it to touch ...
Page 32 - SENSOR PARTS; EXPLODED VIEW; INTRODUCTION
-31- DOOR PARTS CONTROL PANEL PARTS BASE PLATE PARTS OVEN CAVITY PARTS LATCH BOARD PARTS INTERIOR PARTS SENSOR PARTS #EV# EXPLODED VIEW INTRODUCTION Model: 721.62252200 / 721.62252201 721.62259200 / 721.62259201721.62253200 / 721.62253201721.63263300 / 721.63263301
Page 33 - DOOR PARTS
-32- 1004 1000 1001 1005 1003 1007 1006 1013 1002 1381 For Model 721.62253 721.63263 #EV# DOOR PARTS
Page 34 - CONTROL PANEL PARTS
-33- 2000 2002 2001 2006 2004 2381 W106 #EV# CONTROL PANEL PARTS MODEL: 721.62259 721.62252
Page 36 - OVEN CAVITY PARTS
-35- 3009 3034 3003 W105 3002 W118 For Model 721.62252 721.63263 W107 W103 3001 3008 For Model 721.62259 721.62253 #EV# OVEN CAVITY PARTS
Page 37 - LATCH BOARD PARTS
-36- W102 4002 4000 4003 4002 4004 #EV# LATCH BOARD PARTS MODEL: 721.62259 721.62252
Page 39 - Model
-38- * Check the Model No. * Check the Model No. * Check the Model No. * Check the Model No. 5014 W101 W101 9002 W101 W101 W208 W208 W109 W109 5010 5016 5012 5003 W110 5007 5009 5002 5000 5018 5015 5006 3006 9000 5040 W101 3007 5001 5005 #EV# INTERIOR PARTS (I) Model: 721.62252200 721.62259200721.62...
Page 41 - BASE PLATE PARTS
-40- 5008 6000 6001 W108 W101 W109 6002 9001 #EV# BASE PLATE PARTS
Page 43 - Printed in Korea