Sanyo EM-G450 - Page 10

B. TROUBLESHOOTING
STEP
SEQUENCE
RESULT
+
-.—.
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(1) PROBLEM
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No display or mis-display in
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the display window by touching
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the keys.
@
@
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1
@
~1
o
volt Check continuity of FUSE,
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a
Replace it if
1
Thermal Protector
for cavity,
necessary
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Thermal Protector for
1
Runs
magnetron and AC Power
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@
Cord.
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If the fuse has blown see
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“D. REMOVING FUSE” on
Check 230V AC power
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page 13
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supply of connector S1
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between Pin3 and Pin 5
:
PROBLEM
after removing connector
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l-b
S1 from control circuit
230 Volt
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board.
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I
b
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@
@
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check ~;istance
Correct seating of
Qo
o
(pJ)
;0
connector S101 or
●
Normal control I
::’J
replace control circuit
Runs
Control
circuit board
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Circuit Board
00
board.
Each::ltage
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Q-J
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Check resistance of
o
0
touch keyboard
h
(See page 8 )
@
00
u
Resistance
Replace touch
*
is correct
keyboard
Normal touch ~ Runs
Check power supply voltage
ON or OFF
keyboard
on control circuit board.
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(See page 7 )
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@—
Voltage Replace control
incorrect
circuit board.
circuit board
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m
.