REPLACE DATA ENCRYPTION MODULE. (Interior)

TM 5-6350-275-24&P

3-40. REPLACE DATA ENCRYPTION MODULE. (Interior) (Figure 3-38).

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

Screwdriver, Flat tip (Item 7, App B)

equipment.

Equipment Condition:

AC adapter disconnected

Wear ESD wriststrap while handling electronic

Materials/Parts:

assemblies.

RDES Data encryption module

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 enclosure.

(2) Remove the black wire slip-on terminal lug from negative terminal of 12 vdc battery (9).

(3) Remove input cable from DES module (7).

(4) Using a flat tip screwdriver, loosen captive screw (27) holding programmed DES module (7) to bottom DES

assembly.

(5) Pull out on DES module to remove it from lower module interface connector.

b. Installation

(1)

Encrypt the new DES module per (paragraph 3-133).

(2)

Press in on DES module (7) to connect it with lower module interface connector.

(3)

Using a flat tip screwdriver, tighten captive screw (27) to hold programmed DES module (7) to bottom DES

assembly.

(4)

Connect input cable to lower DES module.

(5)

Connect AC adapter to power source.

(6)

Connect the black wire slip-on terminal lug to negative terminal of 12 vdc battery (9).

(7)

Pull out on jumper wire to allow new DES module (7) to sync with RADC and B39 CPU.

(8)

Place front access cover on enclosure and secure it.

3-119