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VT18X UPGRADE KIT INSTALLATION
IF NECESSARY REMOVE KEY PLUG FROM DC POWER HARNESS
When installing the VT18X into an early VT100, you must remove the key plug from connector P1
of the dc power harness or it will not fit on the edge of the new expansion backplane. Use needle-
nose pliers to pull the key plug out of the connector. See Figure 2-11.
P3
Pl
o
REMOVE
KEY PLUG
22
o
_
--I
I
DC POWER HARNESS
(70 14978)
o
1- --
18
MR-7873
Figure 2-11
Remove Key Plug from DC Power Harness
(on Early VT100 Terminals)
INSTALL VT100 EXPANSION BACKPLANE ON CARD CAGE
Install the VT100 expansion backplane (54-13384-01) on the front, right chassis on the terminal as
follows.
1. Find four 4-40
X 1/2 inch screws, two round fiber spacers, and four kep nuts in the small
parts box.
2. Install two screws from the inside of the chassis so they line up with the top and bottom holes
of connector J6 on the expansion backplane. See Figure 2-12.
3. Fasten the backplane to the card cage with kep nuts.
4. Install the other two screws at location J4 of the backplane using a spacer between the card
cage and the backplane. Secure these screws with kep nuts.
FASTEN DC POWER HARNESS TO BACKPLANE
Bend the dc power harness around the card cage wire frame and fasten this harness to the expan-
sion backplane module fingers. To do this, you may have to remove the shorter wires from the
plastic clip on the chassis and replace them later.
NOTE:
The dc power cable must be flat against the chassis or the RF shield will not fit on it.
14
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