Epson EPL-5700 Service Manual page 113

EPL-5700
Table 7-9. Connector CN7 Pin
Pin Signal Name
1 HSKo
2 HSKi
3 TXD-
4 GND
5 RXD+
6 TXD+
7 GPi
8 RXD+
Rev. A
I/O Description
O Serial synchronizing clock
I Transmission permission signal
from host.
O Serial data output signal
-- Ground
I Serial data input signal
O Serial data output signal
O Signal to let the host know that
communication is available.
I Serial data input signal
Table 7-10 . Connector CN9 Pin
Pin Signal Name I/O
1 VCC ---
2 VCC ---
3 LCDX O
4 A1 O
5 LCDWRX O
6 DB3 O
7 DB2 O
8 DB1 O
9 DB0 O
10 SW5X I
11 SW6X I
12 SW7X I
13 SW8X I
14 LED4X O
15 LED5X O
16 LED6X O
17 GND ---
18 LCDCLK O
19 GND ---
20 SW3X I
21 SW2X I
22 SW1X I
23 SW0X I
24 LED3X O
25 LED2X O
26 LED1X O
Chapter7 Appendix
Description
+5V
+5V
LCD Controller enable signal
(not used)
Control/Data select signal of
LCD controller.
LCD controller writing signal
(not used)
Data bus to LCD (not used)
Data bus to LCD (not used)
Data bus to LCD (not used)
Data bus to LCD (not used)
Panel switch(not used)
Panel switch(not used)
Panel switch(not used)
Panel switch(not used)
LED light On signal
LED light On signal
LED light On signal
Ground
LCD Clock signal(not used)
Ground
Panel switch
Panel switch
Panel switch
Panel switch
LED light On signal
LED light On signal
LED light On signal
7-5