Chapter 3 Test Mode
AC-4000 Service Manual No. 0181B
3-4
I
KEY CHECK [Membrane key check mode]
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The input membrane key data other than the RESET key is displayed.
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Press the RESET key to return to the hardware test menu screen.
I
DISPLAY CHECK [Multiple tube display check mode]
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Each segment of all digits lights up.
(This display flashes in one second interval.)
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Press the END key to return to the hardware test menu screen.