Sharp VL-C780S Serviceanleitung Seite 187

~C7B0S/H/X
-C7400E
-C6S0S/H/X
-C6400E
in
P121. | EEPROM CS
P120 |HSCTL
49 |P133 |DACSTB3
50 |P132 | DACSTB2
51 | P131 DAC STB 1
FUNCTION eee REMARK
ERIAL EEPROM SELECTION NchOD
3
KEY OUT3
KEY OUT 2
KEY OUT 1
KEY IN2
KEY IN 1
KEY INO
3-4. Matrix key input and output action
@ 8 @ ®
KEY KEY KEY KEY
OUTO OUT1 OUT2 OUT3
KEYIN3 69
KEYIN2 €0
KEYIN1 63)
KEYINO €2
Figure 5-4 (a). Matrix Key Input Circuit
26