TM 9-4931-436-14&P
(2) Install PWB A1 (9) on front
(4) Remove preamp PWB assembly from
panel (34). Secure with 18 flat washers
connector on PWB A1.
n. Row Preamp PWB Assemblies Replace-
(2), 18 screws (62), and cable clamps
ment (fig. C-2).
Torque to 6-8 in--lb.
(70).
(1) Install preamp PWB in connector
(3) Connect connectors J1, J2, J3,
and J4 to PWB A1.
on PWB A1 (9).
(4) Install column preamp PWB
(2) Apply primer (MIL-S-22473,
assemblies (4) in connectors on PWB A1.
grade T) and locking compound (MIL-S-
(5) Apply primer (MIL-S-22473,
22473, grade C) to threads of all
grade T) and locking compound (MIL-S-
screws.
22473, grade C) to threads of all
(3) Install retainer bar assembly
(5) on PWB A1. Secure with two flat
screws.
(6) Install retainer bar assembly
washers (2) and two screws (1). Torque
(3) on FWB A1. Secure with two flat
to 6-8 in.-lb.
washers (2) and two screws (1). Torque
(4) Replace panel assembly (refer
to 6-8 in.-lb.
to paragraph 6-2 .b).
(7) Install AGC PWB (6) in connec-
o. Analog Motherboard Assembly (A1)
tor on PWB A1.
Removal (fig, C-2).
(8) Install row preamp PWB assem-
(1) Remove panel assembly (refer
blies (7) in connectors in PWB A1.
to paragraph 6-2 .a).
(9) Apply primer (MIL-S-22473,
(2) Remove two screws (1) and two
grade T) and locking compound (MIL-S-
flat washers (2) securing retainer bar
22473, grade C) to threads of all
assembly (3) to PWB A1 (9).
(3) Carefully fold retainer bar
screws.
(10) Install retainer bar assembly
assembly back ensuring that cables se-
(5) on PWB A1. Secure with two flat
cured to top of retaining bar are not
washers (2) and two screws (1). Torque
damaged.
to 6-8 in.-lb.
(4) Remove column preamp PWB
(11) Install screws on four cable
assemblies (4) from connectors on PWB
clamps (73) securing cables to PWB A1.
A1.
(5) Remove two screws (1) and two
9. Detector Removal (fig. C-2).
flat washers (2) securing retainer bar
(1) Remove panel assembly (refer
assembly (5) to PWB A1.
(6) Carefully fold back retaining
(2) Remove two screws (1) and two
bar assembly. Ensure that cables se-
flat washers (2) securing retainer bar
cured to top of retaining bar are not
assembly (3) to PWB A1 (9).
damaged.
(3) Carefully fold retainer bar
(7) Remove AGC PWB assembly (6)
assembly (3) back ensuring that cables
from connector on PWB A1. Remove row
secured to top of retaining bar are not
preamp PWB assemblies (7) from connec-
damaged.
tors on PWB A1.
(4) Remove column preamp PWB
assemblies (4) from connectors on PWB
(8) Disconnect connectors J1, J2,
J3, and J4 from PWB A1.
Al.
(5) Remove two screws (1) and two
(9) Remove 18 screws (62), 18
flat washers (2) securing retainer bar
flat washers (2), and cable clamps
assembly (5) to PWB A1.
(70) securing PWB A1 to front
(6) Carefully fold back retaining
Carefully remove PWB
panel (34).
bar assembly (5). Ensure that cables
A1.
secured to top of retaining bar are not
Analog Motherboard Assembly (A1)
damaged.
Replacement (fig. C-2)
(7) Remove AGC PWB assembly (6)
(1) Apply primer (MIL-S-22473,
from connector on PWB A1.
grade T) and locking compound (MIL-S-
(8) Remove row preamp PWB assem-
22473, grade C) to threads of all
blies (7) from connectors on PWB A1.
screws.
6-3
