2013-10-08
PRODUCT MANUAL PPC3-G-6.5-359
7
MOUNTING AND PROTECTING THE SINGLE BOARD COMPUTER (continued)
Plug or Unplug Connectors Only on Fully Mounted Boards
Never plug or unplug connectors on a board that is not fully mounted. Many
of the connectors fi t rather tightly and the force needed to plug or unplug them
could cause the single board computer to be fl exed.
Avoid cutting of the SBC
Never use star washers or any fastening hardware that will cut into the single
board computer.
Avoid Overtightening of Mounting Hardware
Causing the area around the mounting holes to compress could damage
interlayer traces around the mouting holes.
Use Appropriate Tools
Always use tools that are appropriate for working with small hardware. Large
tools can damage components around the mounting holes.
Placing the SBC on Mounting Standoffs
Be careful when placing the single board computer on the mounting standoffs.
Sliding the board around until the standoffs are visible from the top can cause
component damage on the bottom of the single board computer.
Avoid Conductive Surfaces
Never allow the single board computer to be placed on a conductive surface.
Almost all single board computers use a battery to backup the clock-calendar
and CMOS memory. A conductive surface such as a metal bench can short
the battery causing premature failure.
ADDING PC/104 BOARDS TO YOUR STACK
Be careful when adding PC/104 boards to your stack.
Never allow the power to be turned on when a PC/104 board has been
improperly plugged onto the stack. It is possible to misalign the PC/104 card
and leave a row of pins on the end or down the long side hanging out of the
connector. If power is applied with these pins misaligned, it will cause the I/O
board to be damaged beyond repair.
