Panasonic KX-FLM551 Service Manual page 228

PF sensor
DOCUMENT sensor
Refer to DOCUMENT SENSOR...."CHECK DOCUMENT"
SENSOR...."REMOVE DOCUMENT"
7.11. LCD SECTION
The Gate Array (IC101) works only for writing the ASCII code from the data bus (D4~D7). V0 is
supplied for the crystal drive.
R130 and R134 are density control resistors.
Consequently, in this unit, the timing (positive clock) is generated by the LCD interface circuitry
in the gate array (IC101).
Density
XLD15 (IC101-21pin)
LED ON/OFF port
LED1 (IC101-22)
LED4 (IC101-38)
().
Normal Dark
H L
228
Input port
XLD10 (IC101-9)
XLD10 (IC101-9)
() and PAPER FEED