2.2.2 Inserting Cable Head
7
UTIONCA
Check the location of pin 1 before inserting.
Align pin 1 on the IC socket for a TFP-100G package on the user system with pin 1 on the user
system interface cable head, and insert the user system interface cable head into the IC socket on the
user system, as shown in figure 4.
2.2.3 Fastening Cable Head
CAUTION 1. Check the location of pin 1 before inserting.
2. Use the screwdriver provided for tightening screws.
3. The tightening torque must be 0.054 N•m or less.
If the applied torque cannot be accurately measured,
stop tightening when the force required to turn the screw
becomes significantly greater than that needed when first
tightening. If a screw is tightened too much, the screw
head may break or an IC socket contact error may be caused
by a crack in the IC socket solder.
4. If the MCU does not operate correctly, cracks might have
occurred in the solder. Check conduction with a tester
and re-solder the IC socket if necessary.