QB-V850ESFJ3 Preliminary User’s Manual ZUD-CD-05-0149 28/57
2.6 Mounting and Connecting Connectors (When Using T Type)
This section describes the methods for connecting the QB-V850ESFJ3 to the target system when using the T
Type.
Make connections with both the QB-V850ESFJ3 and target system powered off.
The following abbreviations are used in this section.
•
TC: Target connector
•
YQ: YQ connector
•
EA: Exchange adapter
•
MA: Mount adapter
•
CA: Check pin adapter
•
SA: Space adapter
2.6.1 Mounting TC onto target system
(1) Thinly apply a two-component epoxy adhesive (hardening time at least 30 minutes) to the ends of the four
projections on the base of the TC and adhere the TC to the user board (clean the surface of the user board
using alcohol or the like). If alignment of user board pads to TC leads is difficult, align them as in (2).
(2) Align by inserting the guide pins for alignment for the TC (NQGUIDE) through the pin holes on the top of the
TC. Accessory holes are
φ
1.0 mm non-through holes in two or three places.
(For hole positions, see the particular TC drawing.)
(3) Solder after fitting the MA to the TC. This is to prevent troubles such as flux or solder splatter and adhering
to the TC contact pins when soldering.
●
Soldering conditions
Solder reflow
At 240
°
C for a maximum of 20 seconds
Manual soldering
At 240
°
C for a maximum of 10 seconds (per pin)
Caution Do not perform cleaning by flux immersion or vapor.
(4) Remove the guide pins.
2.6.2 Connecting YQ on TC
(1) After confirming that there are no broken or bent YQ contact pins, fit the YQ in the TC and fasten the screw.
If repeatedly inserting and removing, be sure to inspect the YQ pins before fitting. If pins are bent, correct
them using something thin and flat such as the edge of a knife.
(2) Accessory holes are needed in prescribed positions in four places in the board for connecting the YQ.
Fasten the YQ to the TC on the user board using the supplied M2
×
10 mm screws. The thickness of a
board corresponding to these screws is 1.0 to 2.0 mm. Fasten the screws equally in the four corners using
a #0 or #1 Phillips precision screwdriver or torque driver. The tightening torque of the screws is 0.054 Nm
(MAX.). Too great tightening causes bad connections.
Screws for fitting to the TC (M2
×
10 mm/4) are included with the YQ.
