Epson LQ-570e - C293 PNL Board Circuit; Switch Port; LED Port

EPSON LQ-580 Revision C
O
perating Principles
C
ircuit Operation
5
6
2.3.4 C293 PNL Board Circuit
2.3.4.1 Switch Port
o Switch Numbers: 6
o Logic
n SW On: Low
n SW Off: High
n CPU Terminal
PZ0: Font SW
PZ1: Pitch SW
PZ2: TearOff / Bin SW
PZ3: LF / FF SW
PZ4: Load / Ejects SW
PZ5: Pause SW
o Functions: Refer to Chapter 1.
2.3.4.2 LED Port
o LED Numbers: 9
o Logic
n Register Setting H: LED Off
L: LED On
n G/A Terminal
LED1: FONT3L
LED2: FONT2L
LED3: FONT1L
LED4: PITC2L
LED5: PITC1L
LED6: TBIN2L
LED7: TBIN1L
LED8: POUTL
LED9: PAUSEL
o Current control resistance: 330 Ω