TM-9-2350-273-BD

M48/M60 SERIES TANK, COMBAT FULL-TRACKED 105-MM GUN

TECHNICAL MANUAL; OPERATORS, ORGANIZATIONAL, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE; BATTLEFIELD DAMAGE ASSESSMENT AND REPAIR

  TM-9-2350-273-BD - Page 169 of 288

TM 9-2350-273-BD
COMMUNICATIONS SYSTEM
Detailed Assessment Steps (Cont'd)
4.
Check cables for damaged or torn insulation.
NOTE
Do not attempt to repair any cables. Repair might breach security.
a. If a defective cable is found, follow the procedures listed below:
(1) Replace the defective cable in accordance with standard repair
procedures.
(2) Replace the defective cable with an acceptable replacement cable
listed in para 11-34.
b.
If the problem still exists, go to step 5.
5.
Replace KY-57 (KY-38) with a known operational KY-57 (KY-38).
a.
If the problem no longer exists, repair the KY-57 (KY-38) using standard
maintenance procedures.
b. If the problem still exists, refer to the troubleshooting procedures in
TM 11-5810-256-OP-4.
11-14. OBSERVABLE SYMPTOM: UNABLE TO
Detailed Assessment Steps:
1.
Check the KY-57 (KY-38) system by
(plain text) mode with a distant station.
COMMUNICATE USING THE KY-57
attempting to communicate in the PT
a.
If PT communication is not possible, refer to paragraph 11-5.
b.
If PT communication is possible, go to step 2.
2.
Make sure the proper code is being used by zeroing the KY-57 (KY-38) and
then resetting it with the ‘proper
Operating Instruction (CEOI)).
3.
Attempt to communicate
proper code settings are being used.
11-14
code.
(See applicable Communication Electronic
with a different distant station to make sure the


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