LG MG-5355D Service Manual ▷ View online
6-5
4. LATCH BOARD PARTS
W030
4001
4002
4003
4004
4006
4005
4000
6-6
5. INTERIOR PARTS
W067
W074
5015
5003
5013
5020
W030
W067
5019
5012
5021
5011
5024
5022
5025
W101
W101
W074
5017
5009
W143
5010
W112
5005
W067
W106
5004
5000
5007
5002
5001
W143
5006
5022
5023
W143
W081
6-7
6. BASE PLATE PARTS
6001
6005
6003
W106
W049
W067
W101
6004
6002
W108
W143
5-1
NECESSARY TOOLS
Tools normally used for TV servicing are sufficient.
Standard tools are listed below.
Standard tools are listed below.
●
Diagonal pliers
●
Long nose pliers
●
Cross head screwdriver
●
Wrench (size 5 mm)
●
Nutdriver (size 5 mm)
●
Adjustable wrench
●
Soldering iron
●
Solder
●
Vinyl insulation tape
●
Polishing cloth
NECESSARY MEASURING INSTRUMENTS
●
TESTER (VOLTS-DC, AC, Ohmmeter)
●
Microwave survey meter
— Holaday HI-1500, HI-1501
— Narda 8100, 8200
— Narda 8100, 8200
●
Inch scale
●
600 cc non conductive material beaker (glass or
plastic), inside diameter: approx. 8.5cm (3
1/2
in.)
●
Cylindrical and made of borosilicate glass vessel
max.
thickness: 3mm
outside diameter: approx. 190mm
height: approx. 90mm
thickness: 3mm
outside diameter: approx. 190mm
height: approx. 90mm
●
Glass thermometer: 100°C or 212°F (1 deg scale)
SERVICE INFORMATION
Tools and Measuring Instruments
CAUTIONS
●
Be sure to check a microwave emission prior to ser-
vicing the oven if the oven is operative prior to ser-
vicing.
vicing.
●
If the oven operates with door open, the service
personnel should;
— Tell the user not to operate the oven
— Tell the user not to operate the oven
●
The service personnel should check all surface and
vent openings for microwave emission testing.
●
Check for microwave energy leakage after every
servicing. The power density of the microwave radi-
ation leakage emitted by the microwave oven
should not exceed 4 mW/cm
ation leakage emitted by the microwave oven
should not exceed 4 mW/cm
2
.
And always start measuring of an unknown field to
assure safety for operating personnel from radia-
tion leakage.
assure safety for operating personnel from radia-
tion leakage.
NOTE: The standard is 5 mW/cm
2
while in the cus-
tomer's home. 4 mW/cm
2
stated here is manufac-
turer's own voluntary standard for units in cus-
tomer's home.
tomer's home.
EQUIPMENT
●
Microwave Survey Meter
●
600cc glass beaker
●
Glass thermometer 100°C
MEASURING MICROWAVE ENERGY
LEAKAGE
LEAKAGE
●
Pour 275
±
15cc of 20°C
±
5°C water in a beaker
which is graduated to 600 cc, and place the beaker
on the center of the turntable.
on the center of the turntable.
●
Set the energy leakage monitor to 2,450 MHz and
use it following the manufacturer's recommended
test procedure to assure correct result.
test procedure to assure correct result.
●
When measuring the leakage, always use the 2
inch (5cm) spacer supplied with the probe.
●
Operate the oven at its maximum output.
●
Measure the microwave radiation using and electro-
magnetic radiation monitor by holding the probe
perpendicular to the surface being measured.
perpendicular to the surface being measured.
Microwave Leakage Test
Move probe along shaded area.
Probe scanning speed;
Less than 2.5 cm/sec
Less than 2.5 cm/sec
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