Samsung CLX-8540ND Service Manual page 46

2.3.2.8 Finisher Board
The finisher board controls an optional finisher in CLX-8540ND. The finisher board consists a controller
(S3F443FX), two motor drive ICs to control feeding timing, and a LPEC1 for expanding control I/Os. An
UART port is also used to communicate between the Main-Engine board and the finisher board.
# FIN_DETECT
# RxD
# TxD
# nFIN_RESET
N.C.
+5V
+3.3V
+24V
+24V
+24V
GND(3.3/5V Power)
GND(3.3/5V Power)
GND(24V Power)
GND(24V Power)
GND(24V Power)
# : TTL Level (3.3V )
Service Manual
Product Overview
Finisher Interface Cable
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Connector 3Ways
FG(Case)
D-Sub 15P. Male
2-35
Printer
1
FIN_DETECT #
2
TxD #
3
RxD #
4
nFIN_RESET #
5
N.C.
6
+5V
7
+3.3V
8
+24V
9
+24V
10
+24V
11
GND(3.3/5V Power)
12
GND(3.3/5V Power)
13
GND(24V Power)
14
GND(24V Power)
15
GND(24V Power)
FG(Case)
Connector 3Ways
D-Sub 15P. Female
Samsung Electronics