MC-7682W — LG Microwave Oven Service Manual (repair manual)

Model
MC-7682W
Pages
35
Size
1.89 MB
Type
PDF
Document
Service Manual
Brand
Device
Microwave Oven
File
mc-7682w.zip
Date

View LG MC-7682W Service Manual online

This microwave oven is designed for household use only.
It is not recommended for commercial purposes.
DESCRIPTION
MC-7682W/WS
230 Volts AC 50 Hz
Single phase, 3 wire grounded
Microwave
1,300W 
Grill
1,250W 
Combination
2,650W 
Convection
1,350W (Max. 2550W)
900 Watts full microwave power (IEC60705)
2,450 MHz
2M214 - 39F
0 ~ 99 min. 
530 (W) x 322 (H) x 500 (D) mm
348 (W) x 235 (H) x 366 (D) mm
20.5 kg   
23 kg
Microwave Power for Variable Cooking
Power level
MAX (900W)  ...................................... Full power throughout the cooking time
MED.-HIGH (720W) ............................ approx. 80% of Full power
MEDIUM (540W) ................................ approx. 60% of Full power
DEFROST (360W) .............................. approx. 40% of Full power
LOW/WARM (180W)........................... approx. 20% of Full power
• CONVECTION ..................................Max 250˚C
• GRILL
• COMBINATION
Owner's manual & Cook book
Glass turntable 
Rotating ring
Grill rack, Convection rack 
Metal tray
1-1
ITEM
MODEL
Power Requirement
Power Output
Microwave Frequency
Magnetron
Timer
Outside Dimensions
Cavity Dimensions
Net Weight
Shipping weight
Control Complement
Nameplate Location
Accessories
SPECIFICATIONS
Back side
• DO NOT operate on a 2-wire extension cord during
repair and use.
• NEVER TOUCH any oven components or wiring during
operation.
• BEFORE TOUCHING any parts of the oven, always
remove the power plug from the outlet.
• For about 30 seconds after the oven stops, an electric
charge remains in the high voltage capacitor. When
replacing or checking, you must discharge the high
voltage capacitor by shorting across the two terminals
with an insulated screwdriver.
• Remove your watches whenever working close to or
replacing the Magnetron.
• NEVERoperate the oven with no load.
• NEVERinjure the door seal and front plate of the oven
cavity.
• NEVERput iron tools on the magnetron.
• NEVERput anything into the latch hole and the
interlock switches area.
• Proper operation of the microwave oven requires that
the magnetron be assembled to the waveguide and
cavity. Never operate the magnetron unless it is
properly installed.
• Be sure that the magnetron gasket is properly
installed around the dome of the tube whenever
installing the magnetron.
2-1
CAUTIONS
Unlike other appliances, the microwave oven is
high-voltage and high-current equipment.
Though it is free from danger in ordinary use,
extreme care should be taken during repair.
THE OVEN IS TO BE SERVICED ONLY
BY PROPERLY QUALIFIED SERVICE
PERSONNEL.
MICROWAVE RADIATION
Personnel should not be exposed to the
microwave energy which may radiate from the
magnetron or other microwave generating
device if it is improperly used or connection.
All input and output microwave connections,
waveguide, flange and gasket must be secure
never operate the device without a microwave
energy absorbing load attached.
Never look into an open waveguide or antenna
while the device is energized.
Gasket
ANTENNA
COOLING FIN
MAGNETRON
CHASSIS GROUND
FILAMENT
TERMINALS
MAGNETRON
INSTALLATIONS
3-1
INSTALLING
1. Empty the microwave oven and clean inside it with
a soft, damp cloth. Check for damage such as
misaligned door, damage around the door or dents
inside the cavity or on the exterior.
2. Put the oven on a counter, table, or shelf that is
strong enough to hold the oven and the food and
utensils you put in it. (The control panel side of the
oven is the heavy side. Use care when handling.)
3. Do not block the vent and the air intake openings.
Blocking vent or air intake openings can cause
damage to the oven and poor cooking results.
Make sure the microwave oven legs are in place to
ensure proper air flow.
4. The oven should not be installed in any area where
heat and steam are generated, because they may
damage the electronic or mechanical parts of the
unit.
Do not install the oven next to a conventional
surface unit or above a conventional wall oven.
5. Use microwave  oven in an ambient temperature
less than 104°F(40°C).
6. Place the microwave  oven on a sturdy and flat
surface at least 10 cm(4 inches) from the wall.
7. Place the microwave oven as far away as possible
from TV, RADIO, COMPUTER, etc., to prevent
interference.
8. Do not touch the front glass during or after cooking
of the Grill and Combination mode.
This  glass is very hot during heater operating.
9. Do not operate the oven at microwave and
combination mode with Grill rack placed in the
cavity when the oven is empty.
EARTHING INSTRUCTIONS
This microwave oven is designed to be used in a fully
earthed condition.
It is imperative, therefore, to make sure it is properly
earthed before servicing
WARNING-
THIS APPLIANCE
MUST BE EARTHED
IMPORTANT
As the colors of the wires in the mains lead of this
appliance may not correspond with the colored
markings identifying the terminals in your plug,
proceed as follows.
The wire which is colored green-and-yellow must be
connected to the terminal in the plug which is marked
with the letter or by the earth symbol (    ) or
colored green or green-and-yellow.
The wire which is colored blue must be connected to
the terminal in the plug which is marked with the letter
or colored black.
The wire which is colored brown must be connected
to the terminal in the plug which is marked with the
letter or colored red.
BEFORE YOU BEGIN, READ THE FOLLOWING INSTRUCTIONS COMPLETELY AND CAREFULLY.
10cm
The  wires  in  this  mains  lead  are  colored  in
accordance with the following code:
Green-and-yellow:
Earth
Blue:
Neutral
Brown:
Live
4-1
OPERATING INSTRUCTIONS
FEATURES
CONTROL PANEL
1. KNOB: Used to select the cooking mode.
2. AUTO COOK: Used to select the auto cook.
3. DISPLAY WINDOW: Used to show time of day,
cooking of power level, cooking category.
4. CLOCK: Used to set the time of day.
5. AUTO ROAST: 
6. AUTO WEIGHT DEFROST: Used to select the
auto weight defrost.
7. START/Q-START: To quickly set the cooking time
directly.
8. STOP/CLEAR: Used to stop oven and clear all
entries except time of day.
9. DIAL: To select convection temperature, change
cooking time, and weight.
Turntable
Rotating Ring
Oven Front Plate
Window Door Screen
Safety Door Lock System
Metal Tray
High Rack
Low Rack
Door Seal
Control Panel
180
540
720
1
2
1
2
5.
4.
3
5
6
8
2
1
4
7
9
Page of 35
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Download LG MC-7682W Service Manual (Repair Manual)

Here you can view online or download LG MC-7682W Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair LG MC-7682W Microwave Oven. Information contained in LG MC-7682W service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).