REPLACE PMC LINE INTERFACE UNIT (LIU) PWA

TM 5-6350-275-24&P

3-31. REPLACE PMC LINE INTERFACE UNIT (LIU) PWA. (See Figure 3-36)

This task consists of:

a. Remove

b. Install

INITIAL SETUP:

Equipment Condition:

General Safety Instructions:

Cabinet rear door opened

Remove all jewelry while working on

Tools:

equipment.

Screwdriver, flat tip, (Item 6, App B)

Materials/Parts:

Wear ESD wriststrap while working on

Line Interface Unit PWA

equipment.

WARNING

Shut off power source before attempting to disconnect, service, or connect wires or cables. Failure to do

so may result in serious injury or death.

a. Removal

(1)

Remove ribbon cable from connector P1 (8).

(2)

Remove the slip-on terminal block strips from TB-1 (7) and TB-2 (9).

(3)

Press out on side of snap track PWA holder (6*) and remove the Line Interface Unit (LIU) PWA (10).

(4)

Place the removed PWA into an ESD protective bag.

b. Installation

(1)

Press out on side of smap track PWA holder (6*) and install LIU PWA (10) in snap track alignment slots and

release.

(2)

Connect ribbon cable to connector P1 (8).

(3)

Connect slip-on terminal strip to TB-1 (7) and TB-2 (9).

(4)

Close Cabinet rear door and secure.

3-108