Specifications

CM-X300 CoM
50 CM-X300 Reference Guide Rev 1.31 30-Dec-2010
In order to avoid possible sources of disturbance, it is strongly recommended to start with
minimal system and then add/activate off-board devices one by one.
Check for existence of soldering shorts between pins of mating connectors. Even if signals
are not used on the baseboard, shorting them on the connectors can disable module's
operation. Initial check can be performed using microscope. However, if microscope
inspection finds nothing, it is advised to check using X-ray, because often solder bridges
are deeply beneath the connector's body. Note that solder shorts are the most frequent factor
disabling module's start.
Check possible signals shorting due to errors of baseboard PCB design or assembling.
Improper function of customer baseboard can accidentally delete bootup code from CM-
X300, or even damage module's hardware permanently. Before every new attempt of
activation, check that your module is still functional with CompuLab's SB-X300 baseboard.
It is recommended to assemble more that one baseboard for prototyping, in order to allow
quick sorting out of problems related to specific board assembly.