JVC GM-P420E Operating Instructions Manual page 20

GM-P420PCE
GM-P421PCE
GM-P420E
If self-diagnostic lamp 1 (upper) flashes, lamp 2 (middle)
lights, and lamp 3 (lower) flashes
If "TEMP. OVER" flashes in yellow
If "TEMP. OVER" lights in red
1-20
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No.51953
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