TM 11-5895-1096-40
b. Toggle Switch S4, S5, S6, S7 Replacement.
(3) Disengage connector J 1 (26) and remove
printed circuit card (27).
Refer to figure 3-8, and replace the defective switch as
(4) Install circuit card (27) by engaging connector
follows:
J 1 (26) and aligning with holding brackets
(1) Disassemble test set (para 3-16).
(25).
(2) Tag and unsolder all leads.
(5) Install two screws (24), flat washers (23),
(3) Remove nut (8), then remove defective
lockwashers (22), nuts (21), and tighten.
switch (9) from panel (7).
(6) Reassemble test set (para 3-20).
(4) Install new switch (9) into panel.
h. Connector P1 Replacement. Refer to figure 3-8
(5) Install nut (8) and tighten.
(6) Solder all leads to new switch.
and replace the defective connector as follows:
(7) Reassemble test set (para 3-20).
(1) Remove encode generator circuit card (para
c. Indicator Assembly Replacement.
Refer to
(2) Remove two screws (28).
(3) Remove two screws (29), flat washers (30),
as follows:
and spacers (31) from defective connector
(1) Disassemble test set (para 3-16).
(32).
(2) Tag and solder all leads.
(4) Tag and unsolder all leads to defective
(3) Remove nut (10) and defective indicator
connector.
assembly (11).
(5) Solder all wires to new connector (32).
(4) Install new indicator assembly (11) into panel
(6) Install two spacers (31), flat washers (30),
(7).
screws (29), and tighten.
(5) Install nut (10) and tighten.
(7) Aline connector, install two screws (28), and
(6) Solder all leads to new indicator assembly.
tighten.
(7) Reassemble test set (para 3-20).
d. Fuse Assembly Replacement. Refer to figure 3-
(8) Replace encode generator circuit card (para
8 and replace the defective fuse assembly as follows:
i. Probe Amplifier Circuit Card Replacement. Refer
(1) Disassemble test set (para 3-16).
(2) Tag and unsolder all leads.
to figure 3-9 and replace the probe amplifier circuit card
(3) Remove nut (12), and lift fuse assembly (13)
as follows:
from panel (7).
(1) Remove four screws (1), and top cover (2)
(4) Install new fuse assembly (13) into panel (7).
from case (3).
(5) Install nut (12) and tighten.
(2) Remove four nuts (4), lockwashers (5), flat
(6) Solder all leads to new fuse assembly.
washers (6), screws (7), and allow spacers
(7) Reassemble test set (para 3-20).
(8) to fall loose.
e. Connector J2, J3, J4, J5 Replacement. Refer to
(3) Tag and unsolder leads to connector (9).
(4) Lift circuit card (10) out of case (3).
(5) Install two screws (7) into case (3).
(1) Disassemble test set (para 3-16).
(6) Install two spacers (8) over screws (7).
(2) Unsolder leads.
(7) Install circuit card (10) over screws (7).
(3) Remove nut (14) and lift defective connector
(8) Install two flat washers (6), lockwashers (5),
(15) from panel (7).
nuts (4), and tighten.
(4) Install new connector (15) into panel (7).
(9) Solder leads from connector (9).
(5) Install nut (14) and tighten.
(10) Onto case (3), install top cover (2), four
(6) Solder all leads to connector.
screws (1), and tighten.
(7) Reassemble test set (para 3-20).
f. Transformer TI Replacement. Refer to figure 3-8
3-18. Circuit Card Repairs.
a. Remove defective part by cutting leads as close
and replace the defective transformer as follows:
(1) Disassemble test set (para 3-16).
as possible between part and circuit card mounting
(2) Tag and unsolder all leads.
holes.
b. Remove conformal coating around lead
(3) Remove four nuts (16), lockwashers (17),
flat washers (18), screws (19), and defective
connections on the cards printed wiring side.
c. Heat printed side wiring at mounting holes with
transformer (20).
(4) Aline new transformer (20) on panel (7).
iron until solder melts.
d. Remove excess solder and remaining pieces of
(5) Install four screws (19), flat washers (18),
lockwashers (17), nuts (16), and tighten.
leads.
e. Insure lead mounting holes are free of solder.
(6) Solder all leads to transformer.
f. Bend the leads of replacement part to fit
(7) Reassemble test set (para 3-20).
g. Encode Generator Circuit Card Replacement.
mounting holes.
g. Insert leads through mounting holes from parts
Refer to figure 3-8 and replace the encode generator
circuit card as follows:
side of circuit card.
h. Press part firmly against card.
(1) Disassemble test set (para 3-16).
(2) Remove two nuts (21), lockwashers (22), flat
washers (23), and screws (24 securing
circuit card to holding bracket (25).
3-20
