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Service Manual - Page 1
Website: http://biz.lgservice.com
MICROWAVE OVEN SERVICE MANUAL
MODEL: MB-387W
CAUTION
BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. P/NO : 3828W5S2280
June, 2002 Printed in Korea
Service Manual - Page 2
... and other damage), (4) damage to be repaired, replaced, or adjusted by properly qualified service personnel. E) A microwave leakage check to verify compliance with the door open. CAUTION
MICROWAVE RADIATION
DO NOT BECOME EXPOSED TO RADIATION FROM THE MICROWAVE GENERATOR OR OTHER PARTS CONDUCTING MICROWAVE ENERGY.
C) Before turning on all ovens to be serviced before the oven is to or...
Service Manual - Page 3
PARTS LIST 9-1 CONTENTS
(Page)
SAFETY PRECAUTIONS Inside front cover SPECIFICATIONS 1-1 CAUTIONS 2-1 INSTALLATIONS 3-1 OPERATING INSTRUCTIONS 4-1
FEATURES 4-1 CONTROL PANEL 4-1 OPERATING SEQUENCE 4-2 SCHEMATIC DIAGRAM 4-3 CIRCUIT DESCRIPTION 4-4 SERVICE INFORMATION 5-1 TOOLS AND MEASURING INSTRUMENTS 5-1 MICROWAVE LEAKAGE TEST 5-1 MEASUREMENT OF MICROWAVE POWER OUTPUT 5-3 ...
Service Manual - Page 4
SPECIFICATIONS
ITEM
MODEL Power Requirement
Power Output Microwave Frequency Magnetron Timer Outside Dimensions Cavity Dimensions Net Weight Shipping weight Control Complement
DESCRIPTION
MB-387W
230 Volts AC 50 Hz
Single phase, 3 wire grounded
Microwave
1,200W
Gril
1,000W
Combination
2,150W
800 Watts full microwave power (IEC60705)
2,450 MHz
2M214 - 240GP
0 ~ 90 min.
455 (W) x 281...
Service Manual - Page 11
... radiation using and
electromagnetic radiation monitor by the microwave oven should repair any certified oven unit found to have a microwave emission level in .) • Cylindrical and made of the microwave radiation leakage emitted by holding the probe perpendicular to assure safety for microwave leakage after every servicing. Narda 8100 8200
• Inch scale • 600 cc...
Service Manual - Page 12
...• After adjustment and repair of the door, keep ... than
1 inch/sec (2.5 cm/sec) along the oven surface, this manual have been used.
• At least once a year, have the electromagnetic...replace the magnetron, measure for microwave energy leakage before the outer case is installed and after determining that all parts are in good condition, functioning properly and genuine replacement parts...
Service Manual - Page 13
... ∆T is the temperature rise. CAUTION: DISCHARGE THE HIGH VOLTAGE CAPACITOR BEFORE SERVICING (refer to the vessel.
B.
The initial and final water temperatures are selected...5-3 MEASUREMENT OF MICROWAVE POWER OUTPUT
• Microwave power output measurement is made with the microwave oven supplied at its rated voltage and operated at its maximum microwave power setting with a load ...
Service Manual - Page 25
... connection.
Defective magnetron.
Check oven lamp.
Measure the output power. REMEDY
Replace secondary switch. Defective fan motor. Replace fan motor.
(TROUBLE 4) Oven seems to be operation but oven does not start cooking while desired program times are set and START pad is low. Normal. Replace magnetron.
5-15 No continuity. CAUSE
Decrease in oven load. Check...
Service Manual - Page 28
#EV#
EXPLODED VIEW
INTRODUCTION
MODEL : MB-387W
OVEN CAVITY PARTS
DOOR PARTS
INTERIOR PARTS BASE PLATE PARTS
LATCH BOARD PARTS CONTROL PANEL PARTS
6-1
Owners Manual - Page 1
MB-387W
P/No: 3828W5A3331
MICROWAVE/GRILL/COMBINATION OVEN
OWNER'S MANUAL
PLEASE READ THIS OWNER'S MANUAL THOROUGHLY BEFORE OPERATING.
Owners Manual - Page 6
... Bread
clock
unplug and plug it back in and reset the clock.
6
Manual Cook
Defrost
clock 1 Meat 2 Poultry
3 Fish
You can set the time for 14:35 when using the 24 clock.
If the clock ... ".
Setting the Clock
When your oven is plugged in for the first time or when power resumes after setting clock, you how to set either 12 hour clock or 24 hour clock. you have correctly installed your...
Owners Manual - Page 7
... STOP/CLEAR until "L" disappears. "L" remains on the display and BEEP sounds.
The CHILD LOCK is set, you will be unable to let you have set .
Once the child lock is now set the clock. Press STOP/CLEAR. clock
Defrost Manual Coo1kMeat 2 Poultry
Child 3 Fish 4 Bread
Quick Defrost
Lock
clock
Dweefigrohts/ ttime
1 Meat 2 Poultry 3 Fish...
Owners Manual - Page 12
... a
cooking time of micro power level(20%, 40% and 60%) in combi mode.
You can set two kinds of 25 minutes. Turn DIAL until display shows "25:00".
Auto Cook
clock
Defrost
480W...Your oven has a combination cooking feature which allows you how to programme your oven with heater and microwave at the same time or alternately. weight / time
12 This generally means it takes less time ...
Owners Manual - Page 15
... show you are about to help slow down thawing.
each defrost category has different power settings. Pay particular attention to defrost 1.4 Kg of meat and chicken, some foods should not...1 Meat 2 Poultry
Auto Cook
Auto Manual Cook 3 Fish 4 Bread QAuuictko CDoeofrkost Defrost weight / time
Your oven has four microwave defrost settings:- then place the food in your oven will select ...
Owners Manual - Page 27
Technical Specification
Power Input Output Microwave Frequency Outside Dimension Power Consumption Microwave Grill Combination
MB-387W 220 V AC / 50Hz 800 W (IEC60705 rating standard)
2450 MHz 455 mm(W) X 281 mm(H) X 325 mm(D)
1150 Watts 950 Watts 2050 Watts
27 The wire which ...
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