Panasonic SR-GA281 Service Manual page 9

SR-GA281 / SR-GA421 / SR-GA721
Symptom
• Earlier switching-off
• Poor cooking finish
Too hard
Too soft
Half-boiled
Keep warm function
• Warming fails
(Warm lamp not shown)
• Warming fails
(Warm lamp shown)
Diagnosis
Poor contact between pan and sheathed heater?
(Check with bubbling test)
NO
Center thermostat defective?
(Check with the evaporation test)
NO
Switch lever has been properly adjusted?
Usage correct?
• Too small or large in rice quantity.
• Too small or large in water quantity.
• Switched off once by hand in cooking process.
• Switched off by shocks given in cooking
process.
• Rice not untied.
Micro switch change contact to NO
(Warm mode) after cooking is done?
No continuity of warming heater?
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YES
YES
NO
YES
YES
NO
YES
Remedy
• Replace pan or
sheathed heater.
• Replace center
thermostat.
• Adjust switch lever.
• Explain correct usage.
• Adjust switch lever.
• Replace warming
heater.