Lcd Section - Panasonic KX-FT937LA-B Service Manual

KX-FT937LA-B

6.11. LCD Section

The Gate Array IC(IC1) works only for writing the ASCII code from the data bus (D4~D7). V0 is supplied for the crystal drive.
R25, R24, R15 and R17 are density control resistors.
Consequently, in this unit, the timing (positive clock) is generated by the LCD interface circuitry in the gate array (IC1).
DIsplay mode
English font LED1 (IC1-22pin)
(Global)
LED15 (IC1-21pin)
2 lines
LED14 (IC1-20pin)
Chinese font LED1
2 lines
LED15
LED14
Density Normal
Hi-Z
Hi-Z
Hi-Z
44
Dark
H L
L L
L
L H
H
H