Tm 11-5805-650-12 to 31W2-2Tt-11 C2
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...* .,, ,. -n z zD c D ‘i- o >z 1- TM 11-5805-650-12 TO 31W2-2TT-11 C2 Change DEPARTMENTS OF THE ARMY AND THE AIR FORCE No. 2 Washington, DC, 1 May 1994 Operator's and Organizational Maintenance Manual TELEPHONE SET TA-838/TT (NSN 5805-00-124-8678) (EIC: HJR) AND TELEPHONE SET TA-838A/TT (NSN 5805-01-125-5976) (EIC: HOR) TM 11-5805-650-12/TO 31W2-2TT-11, 25 January 1985, is changed as follows: 1. Remove old pages and insert new pages as indicated below. New or changed material is indicated by a vertical bar in the margin of the page. Remove pages Insert pages B-3 through B-6 . .. B-3 through B-6 2. File this change sheet in front of the manual for reference purposes. Distribution authorized to the Department of Defense and DOD contractor only for official. use or for administrative or operational purposes. This determination was made on 15 April 1990. Other requests for this document.wll be referred to Commander, US Arm Communications-ElectronicsCommand and Fort Monmouth, ATTN: AMSEL-LC-LM-LT, Fort Monmouth, New Jersey 07703--5007. DESTRUCTION NOTICE - Destroy by any method that will prevent disclosure of contents or reconstruction of the document. By Order of the Secretary of the Army: GORDON R. SULLIVAN General, United States Army Official: Chief of Staff MILTON H. HAMILTON Administrative Assistant to the Secretary of the Army 06443 DISTRIBUTION: To be distributed in accordance with DA Form 12-36-E, block no. 6972, requirements for TM 11-5805-650-12. *U.S.GOVERNMENT PRINTING OFFICE: 1993-755-028/80121 By Order of the Secretaries of the Army and the Air Force: JOHN A WICKHAM, JR. General, United States Army Official: Chief of Staff R. L. DILWORTH Brigadier General, United States Army The Adjutant General Official: EARL T. O’LOUGHLIN CHARLES A. GABRIEL General, USAF, Commander, Air Force General, USAF Logistics Command Chief of Staff DISTRIBUTION: To be distributed in accordance with DA Form 12-36 literature requirements for TA-838/TT. TM 115805-650-12/TO 31W2-2TT-11 SAFETY STEPS TO FOLLOW IF SOMEONE IS THE VICTIM OF ELECTRI CAL SHOCK DO NOT TRY TO PULL OR GRAB THE INDIVIDUAL IF POSSIBLE, TURN OFF THE ELECTRICAL POWER IF YOU CANNOT TURN OFF THE ELECTRICAL POWER, PULL, PUSH, OR LIFT THE PERSON TO SAFETY USING A WOODEN POLE OR A ROPE OR SOME OTHER INSULATING MATERIAL SEND FOR HELP AS SOON AS POSSIBLE AFTER THE INJURED PERSON IS FREE OF CONTACT WITH THE SOURCE OF ELECTRICAL SHOCK, MOVE THE PERSON A SHORT DISTANCE AWAY AND IMMEDIATELY START ARTIFICIAL RESUSCITATION A TM 11-5805-650-12/TO 31W2-2TT-11 DO NOT LOCATE ANY TELEPHONE WIRES UNDER POWER LINES DO NOT HANDLE TELEPHONE EQUIPMENT OR TELE- PHONE WIRES IF A POWER LINE HAS FALLEN ACROSS THE TELEPHONE WIRES. COMPRESSED AIR IS DANGEROUS AND CAN CAUSE SERIOUS BODILY HARM. IT CAN ALSO CAUSE MECHANICAL DAMAGE TO THE EQUIPMENT. CAUTION DO NOT USE ANY SOLVENTS TO CLEAN ANY PART OF THE TELEPHONE SET. B * TM 11-5805-650-12/TO 31W2-2TT-11 TECHNICAL MANUAL HEADQUARTERS NO. 11-5805-650-12 DEPARTMENTS OF THE TECHNICALORDER ARMY AND THE AIR FORCE NO.31W2-21TT-11 Washington, DC, 25 January 1985 OPERATOR’S AND ORGANIZATIONAL MAINTENANCE MANUAL FOR TELEPHONE SET TA-838/TT (NSN 5805-00-124-8678) AND TELEPHONE SET TA-838A/TT (NSN 5805-01-125-5976) REPORTING ERRORS AND RECOMMENDING IMPROVEMENTS You can help improve this manual. If you find any mistakes or if you know of a way to improve the pro- cedures, please let us know. Mail your letter or DA Form 2028 (Recommended Changes to Publications and Blank Forms) to: Commander, US Army Communications- Electronics Command and Fort Monmouth,ATTN: AMSEL- ME-MP, Fort Monmouth, New Jersey 07703-5000. For Air Force, submit AFTO Form 22 (Technical Order System Publication Improvement Report and Reply) in accordance with paragraph 6-5, Section Vl, T.O. 00-5-1. Forward direct to prime ALC/MST. In either case, a reply will be furnished direct to you. Page CHAPTER 1. INTRODUCTION Section I. General Information . 1-1 II. Equipment Description . 1-7 III. Principles of Operation . 1-11 CHAPTER 2. OPERATING INSTRUCTIONS Section I. Description and Use of Operator’s Controls, indicators and Receptacles . 2-1 II. Preventive Maintenance Checks, and Services . 2-13 III. Operation Under Usual Conditions . 2-21 lV. Operation Under Unusual Conditions . 2-44 ● This manual supersedes TM 11-5805-650-12&P/TO 31W2-2TT-11, dated 12 April 1976, including all changes. The repair parts and special tools list is now con- tained in TM 11-5805-650-20P. Change 1 i TM 11-5805-650-12/TO 31W2-2TT-11 Page CHAPTER 3. OPERATOR/CREW MAINTENANCE Section I. Troubleshooting Procedures . 3-1 Il. Maintenance Procedures . 3-3 CHAPTER 4. ORGANIZATIONAL MAINTENANCE Section I. Repair Part, Special TooIs, TDME . and Support Equipment . 4-1 Il. Organizational Preventive Maintenance Checks and Services . 4-1 III. Troubleshooting . 4-3 IV. Maintenance Procedures . 4-3 APPENDIX A. References . A-1 B. Maintenance Allocation Chart Section I. Introduction . B-1 Il. Maintenance Allocation Chart... B-4 III. Tool and Test Equipment . B-5 IV. Remarks . B-6 C. Components of End Item List (Not Applicable) D. Expendable Supplies and Materials List (Not applicable) E. Technical Data . E-1 INDEX . INDEX 1 ii TM 11-5805-650-12/TO 31W2-2TT-11 CHAPTER I INTRODUCTION Section I. GENERAL INFORMATION 1-1. SCOPE This technical manual covers Telephone Set TA-838/TT and later model TA-838A/TT. Instructions are given for: ● installation. ● operation. ● preventive maintenance. ● troubleshooting. ● operator/crew maintenance. ● organizational maintenance. 1-1 TM 11-5805-650-12/TO 31W2-2TT-11 1-2. MAINTENANCE FORMS, RECORDS AND REPORTS Reports of Maintenance and Unsatisfactory Equipment ● Department of Army forms and procedures used for equipment maintenance will be those prescribed by DA Pam 738-750 as contained in Maintenance Manage- ment Update. Air Force personnel will use AFT 66-1 for maintenance reporting and TO-00-35D4 for unsatisfactory equipment reporting. Reporting of Packaging and Handling Deficiencies ● Fill out and forward SF 364 (Report of Discrepancy (ROD)) as prescribed in AR 735-11-2/DLAR 4140.55 /NAVMATlNST 4355.73B/AFR 400-54/MCO 4430.3H. Discrepancy to Shipment Report (DISREP) (SF 361) : ● Fill out and forward Discrepancy in Shipment Report (DISREP) (SF 361) as prescribed in AR 55-38/NAVSUPINST 4610.33C/AFR 75-18/MCO P4610.19D/DLAR 4500.15. 1-3. CONSOLIDATED INDEX OF ARMY PUBLICATIONS AND BLANK FORMS Refer to latest issue of DA Pam 310-1 to determine whether there are new editions, changes or additional publications pertaining to the equipment. 1-4. DESTRUCTION OF ARMY ELECTRONICS MATERIEL Destruction of Army electronics materiel to prevent enemy use shall be in accord- ance with TM 750-244-2. 1-2 Change 1 TM 11-5805-650-12/TO 31W2-2TT-11 1-5. ADMINISTRATIVE STORAGE Ž Equipment issued to and used by Army activities will have preventive maintenance performed in accordance with PMCS chart prior to administrative storage. Ž When removing the equipment from administrative storage, the PMCS should be performed to assure operational readiness. 1-6. REPORTING EQUIPMENT IMPROVEMENT RECOMMENDATIONS (EIR) If your TA-836/TT needs improvement, let US know. Send us an EIR, You, the user, are the only one who can tell us what you don’t like the design. PUt it on an SF 368 (Quality Deficiency Report). Mail it to Commander, US Army Communications- Electronics Command and Fort Monmouth, ATTN: AMSEL-PA-MA-D, Fort Monmouth, New Jersey 07703-5000. We’ll send you a reply. 1-7. WARRANTY INFORMATION Certain items of equipment are covered under a special warranty. Your C-E organizational maintenance chief should have the necessary information for identi- fying which items are protected and the procedures for getting warranty repair and/or replacement. Change 1 1-3 TM 11-5805-650-12/TO 31W2-2TT-11 1-8. NOMENCLATURE CROSS-REFERENCE COMMON NAME USED TO DESCRIBE IN THIS MANUAL TELEPHONE SET Telephone Set TA-838/TT and TA-838A/TT. HANDSET Handset assembly. RETRACTILE CORD Cord assembly, electrical handset. CASE Shell, telephone base. BINDING POSTS Post, binding electrical. MODE SELECT SWITCH Switch, rotary. RING VOLUME CONTROL Resistor, variable. KEYSET Switch, push, telephone. CARRYING SLING Sling assembly, carrying. TIEDOWN STRAP Strap assembly, tiedown, handset. TONE RINGER Horn, loudspeaker. STATION CARD Plate, marking, blank. LED RING INDICATOR Diode, light emitting. ON-OFF SWITCH Switch, toggle, sealed. PRESSURE EQUALIZER VALVE Equalizer assembly, air pressure. 1 -4 TM 11-5805-650-12/TO 31W2-2TT-11 1-5 TM 11-5805-650-12/TO 31W2-2TT-11 1-9. LIST OF ABBREVIATIONS AND GLOSSARY AC/CB Switchboard provides AC supervision and common bat- tery power for telephone set. AC/LB Switchboard provides AC supervision. Telephone set gets power from its own LB. CB Common battery. DC/CB Switchboard provides DC supervision and common bat- tery power for telephone set. DC/LB Switchboard provides DC supervision. Telephone set gets power from its LB. DTMF Dual-tone-multi-frequency signaling. Each key on the keyset produces a different tone. EXTENSION A telephone set connected to the subscriber’s telephome set. The conference key. Flash priority. Flash overide priority. Immediate priority. Priority. The operator recall key during a call or the line release key during a conference call when used with an AN/TTC-38(V). When used with an SB-3614(V)/TT it has the same function as key . LB Local battery.