-86-IC1801 2 I K11 Key Input 13 I K12 Key Input 2TC74LCX541 4 I K13 Key Input 35 I POWER_FAIL Power Fail Input Power Fail: Low6 I P-KEY_PW Power key Input7 I LAMP_ERR Lamp Error Input Lamp Error: High8 I OPTION Option Input9 I HDMI_SWIC1821 12 O HOT_PLUG HDMI13 O READY_LEDTC74LCX574 14 O POWER_LED15 O TEMP_LED16 O LAMP_LED17 O K03 Key Scan Output18 O K02 Key Scan Output19 O K01 Key Scan OutputIC Ref. No Pin I/O Signal Name Function Note● Parallel Bus I/O ExpanderControl Port Functions
