TROUBLE SHOOTING GUIDE
Following the procedure below to check if the oven is defective or not.
1) Check grounding before trouble checking.
2) Be careful of the high voltage circuit.
3) Discharge the high voltage capacitor.
4) W hen checking the continuity of the switches, fuse or high voltage transform er, disconnect one lead wire from these parts
and check continuity with the AC plug removed. To do otherwise m ay result in a false reading or dam age to your meter.
(TROUBLE 1)
O ven does not operate at all : any inputs can not be accepted.
NOTE
W hen electric parts are checked, be sure the pow er cord is not inserted the w all outlet.
C heck w ire harness, w iring and connected of the term inals and power cord before check the parts listed below.
CHECK
RESULT
CAUSE
REM EDY
F use blow s.
C ontinuity
N o C ontinuity
C ontinuity
0
i
nfinite
Ω
or
A pprox.
150~310
(norm al)
R eplace
N O T E 1
R eplace
N O T E 1
R eplace
R eplace
C heck continuity of
prim ary w inding of low
voltage transform er
M alfunction
of interlock
m onitor
sw itch
D efective low
voltage
transform er
C heck continuity of
interlock m onitor sw itch
w ith door closed
R eplace fuse
C heck continuity of prim ary
interlock sw itch contact
w ith door partially open
until interlock m onitor s witch
contact close
S horted contacts
of prim ary
interlock sw itch.
F use aga in
blows
D isconnec t one side of the
lead w ire connected form
high voltage transformer
to the high voltage capacitor
and operate the unit
D
Normal
efective high
voltage capacitor
D efective high
voltage transform er
R eplace
C O N D IT IO N
17