‑ 11 ‑
Check resistance of each winding after removing lead wires. (See page 6)
Check H.V capacitor,H.V diode or Fuse Diode with an ohm‑meter after removing the lead wires. (See page 6)
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(4)PROBLEM(4)PROBLEM(4)PROBLEM(4)PROBLEM(4)PROBLEM
Low microwave power output.
Replace H.V Magnetron.
STEPSTEPSTEPSTEPSTEP
RESULTRESULTRESULTRESULTRESULT
SEQUENCESEQUENCESEQUENCESEQUENCESEQUENCE
PROBLEMPROBLEMPROBLEMPROBLEMPROBLEM 3b 3b 3b 3b 3b
Runs
Runs
Runs
Replace H.V Transformer
Normal
H.V
Transformer
Normal H.V capaci tor,H.V diode or Fuse Diode
Normal H.V capacitor, diode or fuse diode
Defective H.V capacitor,H.V diode or fuse diode
Normal Magnetron
Check operation of blower motor when START key is touched.
Runs
Runs
Runs
Replace H.V capaci tor,H.V diode or fuse diode
Normal Operation
No Operation
Temporarily short across terminals of thermal protec‑ tor for magnetron or thermal protec tor for cavity by using jumper lead.
Normal Operation
No Operation
Replace thermal protector for magnetron or thermal protec‑ tor for cavity.
Normal thermal protector for magnetron or thermal protector for cavity.
Measure
resistance
of blower motor.
Normal Resistance
Replace
control
circuit board.
Resistance Incorrect
Replace Blower motor
Normal Blower motor
Normal Control circuit board
bbbbb
Resistance OK
Resistance incorrect
Содержание 437 644 00
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