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STEPSTEPSTEPSTEPSTEP
SEQUENCESEQUENCESEQUENCESEQUENCESEQUENCE
B. TROUBLESHOOTINGB. TROUBLESHOOTINGB. TROUBLESHOOTINGB. TROUBLESHOOTINGB. TROUBLESHOOTING
0
volt.
Check continuity of Fuse,
Ther
mal Protector for
Magnetr
on, Ther
mal Protector
for Cavity and AC Power Cor
d
.
If the Fuse is blown, see
“
E,
REMOVING FUSE
”
on page 13.
Replace it
if necessary.
Nor
mal Control
Cir
cuit Boar
d.
Corr
ect seating of
connector S101 or
replace Contr
ol
Cir
cuit Boar
d.
Each r
esistance
OK.
Resistance
incorr
ect
(ON or OFF).
Replace T
ouch
Key Boar
d.
Nor
mal T
ouch
Key Boar
d.
Nor
mal Control
Cir
cuit Boar
d.
Replace Contr
ol
Cir
cuit Boar
d.
V
oltage
incorr
ect.
Check power supply
voltage on Contr
ol Cir
cuit
Board. (See page 5)
Each voltage
OK.
Touch Key Boar
d.
Check r
esistance of
Touch Key Boar
d.
(See page 6)
120 volts.
Check 120V
A
C
power supply
of connector S1 between Pin
1 and Pin 3 after r
emoving
connector S1 fr
om Contr
o
l
Cir
cuit Boar
d.
(1) PROBLEM
No display or mis-display in
the display window by
touching the keys.
a
b
RESULRESULRESULRESULRESUL
TTTTT
PROBLEM
1-b
Runs
Runs
Runs
Runs
Contr
ol Circuit
Board
.
