89
12-8) DISPLAY Circuit
1) KEY SCAN
When Grid #6 is output, this signal goes through PCB resistance 10 ㏀ and provided to power frequency.
When the switch is pressed, R502(6.8 ㏀) and R501 (12 ㏀) decrease the signal and less than 5.1V peak to
peak signal is provided to MICOM, the MICOM recognizes the grid #6 is provided, and change the function
corresponding to switch key. [Refer the circuit diagram below]
CIRCUIT DESCRIPTION
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