Filter Capacitor

TM 11-6625-3023-14/ET904-AA-MMA-010/E154 TS3684/TO 33A1-12-1173-1

(6) Replace panel assembly as described in paragraph 6-8b.

6-19. Circuit Board Repair. Circuit board repair consists of removal and replacement procedures for the filter

capacitors, resistors and diode rectifiers. The following paragraphs describe the removal and replacement procedures for

these items. Refer to figure 6-2 for component location.

6-20. Filter Capacitor. Filter capacitors (C1 and C2) may be removed and replaced by performing the following

procedures.

a. Removal. Perform the following procedure to remove filter capacitor from the circuit board:

(1) Remove panel assembly as described in paragraph 6-8a.

CAUTION

Discharge capacitor before removing.

(2) Remove circuit board assembly as described in paragraph 6-11a.

(3) Remove nut, screw and lockwasher securing capacitor clamp to circuit board.

(4) Unsolder capacitor leads and remove capacitor.

CAUTION

Overheating may destroy thermal conductivity of copper pad bonding agent or loosen pad.

b. Replacement. Perform the following procedure to replace filter capacitor:

NOTE

Ensure leads are connected to correct polarity.

(1) Insert filter capacitor into clamp and secure clamp with screw, nut and lockwasher.

(2) Insert capacitor leads into holes in copper pad. DO NOT OVERHEAT COPPER PAD.

(3) Solder leads (clip off excess lead length).

(4) Install circuit board assembly as described in paragraph 6-11b.

(5) Replace panel assembly as described in paragraph 6-8b.

6-25