Samsung Electronics
7-6
Troubleshooting
7-3-2 When operating (Continued)
Problem
Inspecting location
Cause
Measures
Fuse blows out
a. Resistance between high voltage
The nesistmce should be
. Exchange
condenser terminals
about 10
§
(Measure it after cutting the
power and pulling the terminal)
b. High voltage transformer
Fuse is blown if
(See precautions)
secondary winding is
open
c. High voltage transformer
Resistance neadings
(Cut the power)
should be:
A=about 96
§
B=about 0.0
§
C=about 1.58
§
D=
¡˜
but ween c
Sparks occvr durins
a. Quality of the "cooker"
Misuse of metallic
Explanation
cooking
being used
material
Explanation /
b. Left-over food
Carbonization of food
and cleaning
left over
Explanation/
c. Piacement of the bupporter
Poor placement of
and adjustment
rotating shaft
Microwdve leakage
a. Condition of the door Assembly
Not enough contact
Adjust the door
puring operation
b. The surface contacting the
in the front side of the
hinge .
front of the cooking room and
cooking room and the
Check the operating
the door
door
condition of the
Deformation
safety switch.
Adjustment
or exchange
Food does
a. Continuity between
Disconnection
Exchange
not heat
magnetron terminals
b. High voltage transformer 1st coil
Disconnection
continuity (Measure it after cutting
the power lead).
c. Continuity of high voltage diode
Forward direction
(Measure it after cutting the
=about 0
§
power leads).
d. Continuity between the magnetron
Reverse direction =500
§
e. High frequency emissions
Bad continuity
Bad magnetron
f. Power relay operation
Bad contact points
g. Continuity of high voltage fuse
Disconnection
