Epson EPL-N4000, Service Manual

Page: 205 / 306

EPSON EPL-N4000/EPL-N4000+ Chapter 4 Disassembly and Assembly
Rev.B 191
4.2.44 ROS Assembly
(See “ROS Assembly” on page -274)
4.2.44.1 Removal
1. Remove the Low Voltage Power Supply. (“Low Voltage Power
Supply(LVPS) Assembly” on page -215)
2. Disconnect the J106, J207, J407, and J430 from the ROS.
3. Remove the four screws that secure the ROS to the printer frame.
4. Lift the ROS Assembly off of the printer frame.
5. Place the ROS Assembly on a flat and stable surface.
4.2.44.2 Installation
1. Reinstall the ROS Assembly onto the printer frame.
2. Reposition the ROS Assembly until the two locating pins mounted
on the bottom of the ROS drop into locating holes that are cut into
the printer frame.
3. Make sure you have not trapped any wire harnesses under the ROS
Assembly.
4. Use four screws to secure the ROS Assembly to the printer frame.
5. Reconnect J106, J207, J407, and J430 to the ROS.
6. Reinstall the LVPS. (“Low Voltage Power Supply(LVPS) Assembly”
on page -215)
Figure 4-59. Removal of ROS Assembly
C A U T I O N
Do not remove covers of disassemble the ROS
Assembly. There are no replaceable parts of field
adjustable points located inside the ROS Assembly.
C H E C K
P O I N T
The small PWB mounted on the side of the ROS
Assembly should be near the HVPS and MCU
side of the printer frame.