QB-RL78L1C In-Circuit Emulator

CHAPTER 2

SETUP PROCEDURE

R20UT2703EJ0200

Rev.2.00

Page 26 of 42

Jan 31, 2014

2.3.5

Precautions for mounting IC using NQ and 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 NQ contact pins 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 NQ.

Also fit the MA.

(4) Put the supplied M2 x 6 mm screws in the four accessory holes 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 MA screws, tighten them again.

(5) Depending on the use environment, when a device has been left for a long time, starting up may be late or not

do.

In this case, loosen the screws slightly and then retighten them.

(6) If starting up may be late or not do after (5) above, check (1) to (3) again.

(7) Tightening the screws 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 NQ, do not perform cleaning by flux immersion or vapor.