Epson EPL-N4000 - Page 81

EPSON EPL-N4000/EPL-N4000+ Chapter 2 Operating Principles
Rev.B 67

ROS Safe
g
uards
There are two safety interlocks built into the CRU cavity.
A molded tab located at the end of the EP Cartrid
g
e actuates
Interlock SW1
which, alon
g
with
SW2
(the Left Cover Interlock),
controls +24VDC out of the MCU PWB. When the Left Cover is
open or the EP Cartrid
g
e is removed, SW1 and SW2 cut +24VDC
out of the MCU PWB.
An electrical jack at the end of the EP Cartrid
g
e completes the
+5VDC circuit for
CRU Interlock
switches
SW1
and
SW2
. When the
EP Cartrid
g
e is removed, +5VDC to the Laser Diode is cut.
W ARNING
Never run the printer with the covers open or
removed, the Main Interlock Switch actuated, and the
CRU Interlock Switches bypassed. Direct eye
exposure to the laser beam may cause serious eye
injury or blindness.