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QB-V850ESFJ3 Preliminary User’s Manual ZUD-CD-05-0149 27/57
(4) Check pin adapter QB-xxx-CA-01S
When using the check pin adapter QB-xxx-CA-01S, the separately available extension probe QB-144-EP-
01S must be connected.
(5) Check pin adapter QB-144-CA-01
The check pin adapter QB-144-CA-01 is an optional product for IECUBE, and can be used to measure the
waveform between IECUBE and the target system.
Since the pins on the QB-144-CA-01 do not correspond to the pin layout in each device, the pin header
cover must be mounted according to the device to be used.
For mounting methods of the pin header cover, refer to
[Related Information]
on the following webpage.
URL: http://www.necel.com/micro/english/iecube/index.html
2.5.4 Precautions for mounting IC using MA
(1) Confirm that there is no weld flash in the resin (sealant part) of the IC. If there is weld flash, remove it using
a knife or the like.
(2) Confirm that there is no weld flash breaking or bending of IC leads. In particular, confirm the planarity of IC
leads. If there is abnormality in the planarity, correct that portion.
(3) Viewing the contact pins on the bottom of the MA (IC mounting part) from the top, if there are foreign bodies
on them, remove them using a brush or the like.
After confirming (1) to (3), fit the IC to the bottom of the MA. Also fit the top (cover) of the MA.
(4) Put the supplied M2
×
6 mm screws in the four accessory holes on the top (cover) of the MA and fasten the
screws in opposite corners. At that time, use either the dedicated screwdriver that is supplied or a torque
driver to fasten them equally in turn with a tightening torque of 0.054 Nm (MAX.). Since the contact is poor if
tightening is too great, once you have lightly fastened the screws on the top of the MA, tighten them again.
(5) Depending on the use environment, when starting up a device that has been left for a long time, starting it
may be difficult. In this case, loosen the screws slightly and then retighten them.
(6) If startup still is difficult after (5) above, check (1) to (3) again.
(7) Tightening the screws on the top of the MA too much may give rise to cracks in the molded part of the MA
(plastic part) and bend the mold into a bowed shape, making contact poor.
(8) After soldering the MA, do not perform cleaning by flux immersion or vapor.