ARMY TM 5-6675-308-34
MARINE CORPS TM 08837A-34/2
downward until the bottom wedges be-
4. Remove + 20V converter-regulator cir-
come loose.
cuit card assembly A2 (50) from chassis
(22).
5. Remove 28V converter-regulator circuit
card assembly A3 (63) from chassis (22).
(b) Replacement.
(b) Replacement.
1.
Insert + 20V converter-regulator circuit
card assembly A2 (50) into slot in chassis
1. Insert 28V converter-regulator circuit
(22) and carefully guide it into place.
card assembly A3 (63) into slot in chassis
(22) and carefully guide it into place.
2. Just before the connectors mate, check
that the + 20V converter- regulator cir-
2. Just before the connectors mate, check
cuit card assembly A2 (50) is free in its
that the 28V converter-regulator circuit
guides and its top edge is parallel to the
card assembly A3 is free in its guides and
chassis (22) top surface.
its top edge is parallel to the chassis (22)
top surface.
3. Seat + 20V converter-regulator circuit
card assembly A2 (50) by applying moder-
3. Seat 28V converter-regulator circuit card
ate, even pressure at both corners. If card
assembly A3 (63) by applying moderate,
does not readily seat, pull the card out
even pressure at both corners. If card
and inspect for bent or broken connector
does not readily seat, pull the card out
pins.
and inspect for bent or broken connector
pins.
4. Tighten four captive screws (49) securing
card (50) to chassis (22).
4. Tighten four captive screws (62) securing
card (63) to chassis (22).
5. Ti hten four screws (48) in wedgelocks
(47) until wedges are tight against edge of
5. Tighten four screws (66) in wedgelocks
slots.
(67) until wedges are tight against edge of
slots.
6.
Secure bottom cover (45) and gasket (46)
to chassis (22) with 25 screw; (43) and
6. Reinstall two terminal lugs (55 and 57) to
washers (44). Torque screws to 9 inch-
filter circuit card assembly A4 (68) with
pounds using procedures described in par-
screws (56 and 58).
7. Secure bottom cover (45) and gasket (46)
(3) 28V converter-regulator circuit card assembly
to chassis (22) with 25 captive screws (43)
A3. Remove and replace 28V converter-regulator cir-
and washers (44). Torque screws to 9
inch-pounds using procedures described
follows:
(a) Removal.
(4) Filter circuit card assemblv A4. Remove and
1. Loosen 25 captive screws (43) and wash-
sheet 3) as follows:
ers (44) securing bottom cover (45) and
gasket (46) to chassis (22); remove cover
(a) Removal.
and gasket.
1. Loosen 25 captive screws (43) and wash-
2. Remove two screws (56 and 58) securing
ers (44) securing bottom cover (45) and
terminal lugs (55 and 57) to filter circuit
gasket (46) to chassis (22); remove cover
card assembly A4 (68); tag and remove
and gasket.
terminal lugs.
2. Remove two screws (56 and 58) securing
3. Loosen four captive screws (62) securing
terminal lugs (55 and 57) to filter circuit
28V converter-regulator circuit card as-
card assembly A4 (68); tag and remove
sembly A3 (63) to chassis (22).
terminal lugs.
4. Loosen four screws (66) securing wedge-
3. Loosen four screws (64) securing wedge-
locks (67) until 28V converter-regulator
locks (65) until filter circuit card assembly
A4 (68) is free.
circuit card assembly A3 (63) is free.
NOTE
NOTE
It may be necessary to loosen the wedges
It maybe necessary to loosen the wedges
if they become frozen. This can be done
if they become frozen. This can be done
by simply tapping the wedge screws
by simply tapping the wedge screws
*U.S. GOVERNMENT PRINTING OFFICE: 1994- 555-028/00048