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.
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