Sanyo EM-SL30NEUK - Low Microwave Power Output

STEP
SEQUENCE
RESULT
b
Resistance
OK
Replace control circuit board.
(4) PROBLEM Low microwave power output.
a
Normal control circuit board
Replace Blower motor
∞ 0
Resistance incorrect
∞
274
Normal Resistance
Replace thermal protector for magnetron or thermal protector for cavity.
∞
0
∞
0
Defective H.V capacitor,
H.V diode or H.V. fuse.
Replace HV capacitor, H.V diode or H.V. fuse.
Replace HV Magnetron.
Runs
Runs
Runs
Runs
Runs
Runs
∞
0
∞
0
Resistance
Incorrect
-12-
Normal Blower
Motor
Measure resistance
of blower motor
(Approx 300 ohms)
No
Operation
Normal thermal protector for
magnetron or thermal
protector for cavity.
Normal
Operation
Temporarily
short across
terminals of
thermal protector
for magnetron
or thermal
protector for
cavity by using
jumper lead.
No
Operation
Normal
Operation
PROBLEM
3-b
Check operation
of blower motor
when START key
is touched.
Check resistance of
each winding after
removing lead wires.
(See page 6 )
Normal HV Transformer
Check H.V capacitor , H.V.
diode or H.V fuse with an
ohm-meter after removing
the lead wires.( See page 6 )
Normal H.V capacitor,
H.V diode or H.V. fuse.
Replace HV Transformer
Normal
Magnetron
Normal H.V
capacitor ,
diode or fuse.