IBM 3270 Manual page 42

Dual Cable:
2. Insert the silver thumbscrews provided in the customer envelope by pushing them in
the reverse direction of the arrows until the end of each thumbscrew appears outside of
the hood.
Note: You should keep the removed thumbscrews in the customer envelope for later
use; the modem may be changed or the terminal may be relocated.
D
To External Modem
or
3704/3705
Thumbscrew
0
Connect the cable plug
0
(on the long section of the communication cable) to the
socket
fJ
on the short section of the communication cable. Tighten the thumb-
screws of the cable plug Osecurely with your fingers.
0
Set the TEST /OPE R switch
EJ
to
OPE
R.
D
Connect the cable plug
a
to the modem or to the 3704/3705 Line Set 1 F Inter-
face Cable connector (for 3276 direct attachment to a 3704/3705). Tighten the
thumbscrews of the cable plug
9
securely with your fingers.
31