SOI 03.06 FV
22/38
599 36 78-45
TEST PROCEDURES
PROCEDURE
LETTER
COMPONENT TEST
H
BLOWN FUSE F8A (F2)
CARRY OUT 3D CHECKS
If the fuse F8A (F2) is blown when the door is opened, check the primary
latch switch, monitor switch and monitor resistor.
If the fuse F8A (F2) is blown by incorrect door switching replace the
defective switch(es) and the fuse F8A (F2).
CARRY OUT 4R CHECKS
CAUTION: Only replace fuse with the correct value replacement.
I
NOISE FILTER TEST
CARRY OUT 3D CHECKS
Disconnect the leads from the
terminals of the noise filter.
Using an ohmmeter, check between
the terminals as described in the
following table.
MEASURING POINTS
INDICATION OF OHMMETER
Between
N
and
L
Approx. 680 k
Ω
Between terminal N and WHITE
Short circuit
Between terminal L and RED
Short circuit
If Incorrect readings are obtained, replace the noise filter unit.
CARRY OUT 4R CHECKS
J
MOTOR WINDING TEST
CARRY OUT 3D CHECKS.
Disconnect the leads from the motor. Using an ohmmeter, check the
resistance between the two terminals as described in the table below.
Table: Resistance of Motor
Motors
Resistance
Fan
motor
Approximately
290
Ω
Turntable
motor
Approximately 12 - 15 k
Ω
If incorrect readings are obtained, replace the motor.
CARRY OUT 4R CHECKS.
LIVE TEST FOR MOTOR WINDING
CAUTION: The following procedure requires the oven to be connected
to the supply and should only be used if the relevant "cold"
checks for the motor under test are inconclusive.
1. CARRY OUT 3D CHECKS.
2. Disconnect the leads from the primary of the high voltage transformer. Make
sure that the leads remain isolated from other oven components and
chassis (Use insulation tape if necessary).
