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B.
TROUBLESHOOTING
CTFP
SFnllFNCE
RESULT
s.?
.-.
-----
. ..—
(1) PROBLEM
I
No display
or mis-display
in
I
the display
window
by
I
I
,,,
touching
the keys.
@
I
I
@
a
o
volt
I
Check
continuity
of thermal
Replace
it
I
Runs
protector
for magnetron,
if necessary.
I
thermal
protector
for cavity
I
and AC Power
cord.
If the
;
fuse is blown,
see "F.
I
REMOVING
FUSE"
on page
I
Check
240v
AC power
13.
I
supply
of connector
S1
I
I
between
Pin 3
and Pin 6
('PROBLEM
after
removing
connector
I
1-b
S1 from control
circuit
1.
board.
I
240 volt
I
I
I
I
b
I
@
1
1.'".
I ' @
I
Touch key board
Each
resistance
Correct seating of
Normal
control
~
Runs
OK
connector
S101 or
circuit
board
000'
I
000
replace control
I
000
circuit board.
I
I
Each voltage
Check resistance of
Control
I
OK
touch key board.
I
circuit
board
(See page 6)
t
@
000
I
,,
'/<
000
000
I '(GJ
I
Check power supply voltage
Resistance
Replace touch
Normal
touch
I
Runs
key board
on co'ntrol circuit
board.
in correct
key board.
(See me
6)
(ON or OFF)
;
I
I
I
@
I
.'".
'@
1
Voltage
I
Replace control
Normal
control
~
Runs
incorrect
circuit board.
circuit
board.
I
I
I
I
(
\
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