Epson EPL-N4000, Service Manual

Page: 263 / 306

EPSON EPL-N4000/EPL-N4000+ Chapter 7 Appendix
Rev.B 249
Figure 7-21. Duplex PWB
↔
MCU PWB
Table 7-19. Signal Name
Signal Name Description
OPT$TX+ Status of Duplex Module sent to MCU. High=Mark.
Low=No mark
OPT#RX+ Status of MCU sent to the Duplex Module. High=Mark.
Low=No mark
DUP#DET Monitors presence of a Duplex Module. High=Duplex
Module installed. Low=Duplex Module not installed
DREGI Monitors paper at the Registration Sensor. High=Paper
present. Low=Paper not present
INV SW Monitors paper at the Fuser Exit Sensor. High=Paper
present. Low=Paper not present
CL$ICW Switches the Inverter CW Clutch. High=Off. Low=On
CL$ICCW Switches the Inverter CCW Clutch. High=Off. Low=On
INTLK#DUP Monitors the Duplex Cover Interlock Switch. High=Cover
open. Low=Cover closed.
SNR#DEXIT Monitors paper at the Duplex Exit Sensor. High=Paper
present. Low=Paper not present
SNR#DWAIT Monitors paper at the Duplex Wait Sensor. High=Paper
present. Low=Paper not present
SOL$DGATE Switches the Duplex Exit Gate Solenoid. High=Off.
Low=On
/A, A, /B, B Pulse signals sent by the Duplex PWB to rotate the
Duplex Motor