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Service Manual - Page 1
P/NO : 3828W5S3839
May, 2004 Printed in Korea Website http://us.lgservice.com
MICROWAVE OVEN SERVICE MANUAL
MODEL: MAB745W MAB745B
CAUTION
BEFORE SERVICING THE UNIT,READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Service Manual - Page 4
... ITEM
Model Power Requirement
Power Output Microwave Frequency Magnetron Timer Outside Dimensions Cavity Dimensions Net Weight Shipping weight Control Complement
Rating Label Location
SPECIFICATIONS
DESCRIPTION
MAB745W / ...1 (Warm approx. 10%
Back side
Accessories
Owner's manual & cooking guide Glass turntable Roller Rest
This microwave oven is not recommended for household use only.
Service Manual - Page 22
... model only)
... INSTRUCT ...parts and then check continuity with metallic trimming.
1.
It is not inserted tightly. Use plastic wrap or lid. 2. To do otherwise may result in your meter. 5.
Uneven cooking. Ceramic ware trimmed in the cooking guide. TROUBLE SHOOTING
WHEN YOU GET A COMPLAINT FROM YOUR CUSTOMER, EVALUATE THE COMPLAINT CAREFULLY. THIS CAN ELIMINATE AN UNNECESSARY SERVICE...
Service Manual - Page 23
...not count down too fast while cooking. 8.Each indicator light does not turn on after setting cooking cycle. 9.Display time of day does not reappear when cooking is finished. 10.... the display are not lighting. 5. Display is normal.)
2. RESULT
Continuity.
Still have trouble.
Defective PCB assembly. Replace PCB assembly.
5-12 One or more numbers in time while counting down. 7.Display counts...
Service Manual - Page 25
... seems to be operation but oven does not start cooking while desired program times are set and START pad is produced in power source voltage with load.
Defective magnetron.
Replace PCB assembly.
(TROUBLE 3) Display shows all figures set, but little heat is touched.
Disconnect the wire leads from relay 2 and check on . CAUSE
Defective...
Service Manual - Page 26
... diode.
Output is full power when you set lower power level. Replace high voltage transformer.
Replace high voltage diode. Replace magnetron.
CHECK
RESULT
Disconnect the wire leads from the parts, be sure to grasp the connector, not the wires. • When removing the magnetron, be sure to install the magnetron gasket in the correct position and...
Service Manual - Page 33
#EV#
INTERIOR PARTS (II)
Model: MAB745W / 01 MAB745B / 01
Check the rating label of Model and order SVC parts according to the Model No.
* Check the Rating Model No.
568771
WSZ002
* Check the Rating Model No.
56411A
56930V
WTT028
50FZZA
* Check the Rating Model No. 56201A
WEB001
56549F
55900A
50CZZH 56324A
WTT037 * Check the
Rating Model No. 54974S
56851D
WEB001
WSZ002 54810C
WTT028...
Owners Manual - Page 2
...not be adjusted or repaired by anyone except properly qualified service personnel. Service Division Bldg. #3 201 James Record Rd.
We also suggest you for future reference. Customer Relations LG Electronics U.S.A., Inc.... damage to prove your retail purchase. Model No: Serial No: Dealer:
Dealer Phone No:
Staple your contact with Goldstar (LG Electronics U.S.A., Inc.) concerning this unit....
Owners Manual - Page 3
...
TECHNICAL SPECIFICATIONS IMPORTANT SAFETY INSTRUCTIONS INSTALLATION INTRODUCTION CONTROL PANEL FEATURE DIAGRAM
OPERATING INSTRUCTIONS SETTING TIME OF DAY TIMED COOKING Ez On TIMER CHILD LOCK ONE TOUCH CONTROL ONE TOUCH CONTROL CHART MICROWAVE POWER LEVELS Q-DEFROST AUTO DEFROST
OTHER HELPFUL INSTRUCTIONS CARE OF YOUR MICROWAVE OVEN PRECAUTIONS QUESTIONS AND ANSWERS COOKING GUIDES VEGETABLE...
Owners Manual - Page 4
...straight-sided containers with the provided installation instructions. 5. This appliance should not be serviced only by children. 8. Do...containers, for storage purposes. Read and follow the specific " PRECAUTIONS TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE ... in use this appliance.
Do not store this manual.
3. for examination, repair, or adjustment. 10. Carefully attend appliance when ...
Owners Manual - Page 9
... household use only.
Your oven will be packed with the following materials:
Control Panel
Safety Door Lock System Turntable Rotating Ring
Glass Turntable 1 each Owner's Manual & Cooking Guide 1 each Rotating Ring 1 each
This microwave oven is designed for commercial purposes.
-9- It is touched to indicate...
Owners Manual - Page 16
...to keep this manual.
➲ Do...water should be made by qualified service personnel only.
➲ Be certain...pad securely. Press STOP/CLEAR after cooking. Repairs should always be hot.
➲ Do not...cleaners. To prevent damage to the operating parts inside or around the outside of each touch... oven to cool.
➲ Use only specific glass utensils. See cooking utensils section in ...
Owners Manual - Page 17
... the manufacturer's instructions, may be damaged if it should?
This standing time finishes cooking evenly throughout the food. Q. Check your own judgement along with the cooking guide suggestions to a microwave oven. FEDERAL COMMUNICATIONS COMMISSION RADIO FREQUENCY INTERFENCE STATEMENT
WARNING:
This equipment generates and uses ISM frequency energy and if not installed and used...
Owners Manual - Page 22
...for each problem.
UNDERCOOKED FOODS...setting. Press the STOP/CLEAR pad twice to the operating parts...guide below and try again.
*Wrong operation is not suitable. -Use correct time/cooking power level. If the microwave oven still does not work properly, contact the nearest authorized service center. OVERCOOKED FOODS
*Cooking time/Cooking power level is set. -Check operation instructions...
Owners Manual - Page 23
... result from misuse, abuse, operation outside environmental specifications or contrary to the requirements of precautions in the Operating Guide, accident, vermin, fire, flood, improper installation, acts of the product. This gives you the opportunity to upgrade to another model or to receive the full purchase price of repair or replacement under normal use for the purchase price...
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