Specifications

b. Replacement of Chassis Bottom Plate
(fig. 12 and 14).
(1) Place the chassis bottom plate in
position so that the two studs on
switch S7902 extend through the
holes prodded and secure
them:
use the two nuts (a(3) above).
(2) Replace and tighten the two 6-32
screws (a(2) above).
(3) Replace and tighten the four 4-40
screws (a(l) above).
c. Removal of Connector J7902 (fig. 12
and 14) .
(1) Remove the chassis bottom plate
(a above).
(2) Remove the red lead from J7902
at the upper contact of switch
S7901, and the black lead from
J7902 at the ground lug at connector
S7907.
(3) Remove the nut on the front panel
side of connector J7902 and re-
move connector J7902 from the
rear of the panel.
d. Replacement of Connector J7902 (fig.
12 and 14).
(1) Insert the connector from the rear
of the front panel and secure it in
place; use the nut (c(3) above).
(2) Connect the red lead to the upper
contact of switch S7901, and the
black lead to the ground lug at con-
nector J7907.
(3) Replace the chassis bottom plate
(b above).
e. Removal at Lamp Sockets XDS7901
and XDS7902 (fig. 14).
(1) Remove the chassis bottom plate
(a above).
(2) Remove and tag the three leads
from each socket.
(3) Remove the nut from the front
panel rear side of each socket, and
remove each socket from the front
side of the front panel.
f. Replacement of Lamp Sockets
XDS7901 and XDS7902 (fig. 14).
(l) Insert each socket through the front
side of the front panel and secure
each; use the nut (e(3) above).
(2) Reconnect the wires (e(2) above).
(3) Replace the chassis bottom plate
(b above).
g. Removal of Fuseholder XF7901 (fig.
14) .
(1) Remove the chassis bottom plate
-
(a above).
(2) Remove two wires from the fuse-
holder.
(3) Remove the nut and lookwasher
from the front panel rear side of
the fuseholder,
-
and remove the
fuseholder from the front side of
the front panel.
h. Replacement of Fuseholder XF7901
(fig. 14).
(1) Insert the fuseholder through the
front side of the front panel and
secure it; use the nut and lock-
washer (g(3) above).
(2) Reconnect the two wires (g(2)
above).
(3) Replace the chassis bottom plate
(b above).
i. Removal of Test Jack A (fig. 14).
(1) Remove the chassis bottom plate
(a above).
(2) Remove one wire from the test
jack.
(3) Remove the nut from the front panel
rear side of the test jack, and re-
move the test jack from the front
side of the front panel.
j. Replacement of Test Jack A (fig. 14).
(1) Insert the test jack through the
front side of the front panel and
secure it; use the nut (i(3) above).
(2) Reconnect the Wire (i(2) above).
(3) Replace the chassis bottom cover
(b above).
k. Removal of Switch S7901 (fig. 12 and
14) .
(1) Remove the chassis bottom cover
(a above).
(2) Remove two wires from the switch.
(3) Remove the nut and lockwasher
from the front panel front side
of the switch and remove the
switch from the rear of the front
panel.
1. Replacement of Switch S7901 (fig. 12
and 14).
(1) Insert switch S7901 from the rear
side of the front panel; be careful
to seat the locating lug in the hole
provided.
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