REPLACE MOD II MODEM PWA. (Exterior)

TM 5-6350-275-24&P

3-50. REPLACE MOD II MODEM PWA. (Exterior) (Figure 3-39 and FO-6 sheet 2).

This task consists of:

a. Remove

b. Install

INITIAL SETUP

Tools:

General Safety Instructions:

Screwdriver, Flat tip (Item 6, App B)

Remove all jewelry while working on equipment.

Equipment Condition:

Wear ESD wriststrap while handling electronic assemblies.

AC adapter disconnected

Materials/Parts:

Mod II Modem PWA

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) Open and remove front access cover from NEMA 4 enclosure.

(2) Remove black wire slip-on lug from 12 vdc battery (6).

(3) Tag and remove wires from J1 and J2 (FO-6, sheet 2) on Mod II Modem PWA (9).

(4) Press out on side of snap track PWA holder (*) and remove Mod II Modem PWA (9) from snap track

alignment slots.

b. Installation

(1) Set the link settings and/or switch settings exactly the same as removed PWA or refer to Appendix E, page

E-52, for PWA settings.

(2) Press out on sides of snap track PWA holder and install Mod II Modem PWA (9) into snap track alignment

slots.

(3) Connect tagged wires to J1 and J2 (FO-6, sheet 2).

(4) Connect black wire slip-on terminal lug to 12 vdc battery (6).

(5) Connect AC adapter to power source.

(6) Place front access cover on NEMA 4 enclosure and secure it.

3-130