ELECRAFT KRX3 Dokumentacja Pobierz pdf (Strona 12)

Remove both bottom covers from the K3 by removing the screws shown in Figure 10.

SEE NOTE

NOTE:

THESE THREE SCREWS

ARE 1/4" (6.4 mm) LONG

AND HAVE INSIDE TOOTH

LOCK WASHERS UNDER

THE SCREW HEADS.

ALL THE OTHER SCREWS

ARE 3/16" (4.8 mm) LONG

AND HAVE NO LOCK

WASHERS.

REMOVE ALL THE

SCREWS INDICATED

AND LIFT THE

BOTTOM COVERS

OFF.

ESD SENSITIVE!

WEAR A GROUNDED

WRIST STRAP OR TOUCH

AN UNPAINTED METAL GROUND

BEFORE HANDLING THE RF BOARD.

Figure 10. Removing K3 Bottom Cover.

Install two 1/2” (13 mm) standoffs on the RF board as shown Figure 11.Use the hardware exactly as shown.

The lock washer between the standoff and the pc board is very important to establish the correct height above

the board.

Figure 11. Installing KBFP3 Standoffs.

Replace both bottom covers using the 4-40 black pan head screws you removed earlier. Note that three

locations take the 4-40 1/4” (6.4 mm) black pan head screws with lock washers as shown in Figure 10 while the

remainder are 4-40 3/16” (4.8 mm) screws . Be sure these are in the correct locations!

CAUTION!

Failure to replace the three 1/4” (6.4 mm) bottom screws with their lock washers in

the locations shown in Figure 10 may destroy power transistors in your K3!

1 2 ... 7 8 9 10 11 12 13 14 15

Brak uwag

ELECRAFT KRX3 Dokumentacja Strona 12