NEC POWERMATE ES 5200 - SERVICE, Service Manual

Page: 153 / 306

3-70 Disassembly and Reassembly
USB Board Removal
The following sections describe how to remove the USB board from small
desktop, desktop, and minitower systems.
Removing the USB Board — Small Desktop or Desktop
Remove the USB board from a small desktop or desktop system by following
these steps.
1.
Turn off the system and disconnect the system power cord.
2.
Ensure that all external cables are disconnected from the front and rear of
the system.
3.
Remove the system unit cover (see “Removing the Small Desktop or
Desktop Cover”).
4. Remove the front panel (see “Removing the Front Panel — Small Desktop”
or “Removing the Front Panel — Desktop”).
5. Label and disconnect the USB cable connector from the riser board. For the
location of the connector see one of these figures.
„
“Riser Board Auxiliary Cable Connectors — Small Desktop
„
“Riser Board Auxiliary Cable Connectors — Desktop”
In the small desktop system it may be helpful to remove the hard drive for
easier access to the USB connector on the riser board (see “Removing a
3 1/2-Inch Hard Drive — Small Desktop”).
6.
Remove the two screws securing the USB board to the chassis (see one of
the following figures).
Locating the Front USB Board Screws — Small Desktop