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TM 11-5820-477-30 - Liberated Manuals

1. a TM11 6625 366 15 Operator s Organizational Direct Support and General Support Maintenance Manual Signal Generator AN URM 127 NSN 6625 00 783 5965 TM 11 6625 683 14 1 TM 11 5820 477 30 Operators Manual Digital Readout Electronic Counter AN USM 207 NSN 6625 00 911 6368 TM 11 6625 700 10 Procedures for Destruction of Army Electronics Materiel to Prevent Enemy Use TM 750 244 2 A 2 TM 11 5820 477 30 APPENDIX B EXPENDABLE DURABLE SUPPLIES AND MATERIALS LIST Section INTRODUCTION 1 Scope This appendix lists expendable supplies and materials you will need to operate and maintain the AN GRA 39 These items are authorized to you by CTA 50 970 Expendable Items Except Medical Class V Repair Parts and Heraldic Items B 2 Explanation of Columns a Column 1 Item Number This number is assigned to the entry in the listing b Column 2 Level This column identifies the lowest level of maintenance that requires the listed item Direct Support c Column 3 National Stock Number This is the National stock number assigned to the item use it to request or requisition the item d Column 4 Description Indicates the Federal item name and if required a description to identify the item The last line for each item indicates the Federal Supply Code for Manufacturer FSC
2. 2 2 Section Ill Maintenance 2 19 OVERVIEW The maintenance procedures in this chapter provide information for direct support personnel to inspect troubleshoot or repair Radio Set Control Groups AN GRA 39 AN GRA 39A AN GRA 39B and AN GRA 39C This chapter also lists tools and test equipment required for direct support maintenance Troubleshooting procedures which begin with the operational and equipment performance checks in TM 11 5820 477 12 are carried to a higher category in this chapter The direct support maintenance procedures that follow supplement procedures described in the operator s and organizational maintenance manual 11 5820 477 12 Section 1 REPAIR PARTS SPECIAL TOOLS TMDE AND SUPPORT EQUIPMENT Para Page Tool and Test Equipment Requirements 2 1 Repair Parsi u 2 1 Tool and Test Equipment Requirements For authorized test and diagnostic equipment refer to the Maintenance Allocation Chart in the Operator s and Organizational Maintenance Manual TM 11 5820 477 12 No special tools or support equipment are required for direct support maintenance of the AN GRA 39 2 2 Repair Parts Designated repair parts are listed and illustrated TM 11 5820 477 23P Repair Parts and Special Tools List for Control Radio Set AN GRA 39 AN GRA 39
3. n li AMPL R227 4 Nu 6202 e ML is H i 0 l 5 1 1 eege EE 1 3 I 5 r Zu Peo 3 J TEST por oa Aen 204 H 1 9206 CINE enl Dor 803 T H E AUDIO 1 DRIVER i i BERE 920 I eo en KE NOTE 19 1 9207 126 f 1 iunii unt 4298 cele 3 201 NOTE B 140014 CALL GALL LAMP d LAMP CONTROL RELAY NOTE 9 zd NOTES 1 REFERENCE DESIGNATIONS ARE ABBREVIATED PREFIX TME DESIGNATION WITH UNIT NUMBER OR ASSEMBLY DESIGNATION OR BOTH B UNLESS OTHERWISE INDICATED RESISTANCES ARE ARE IN UF TRANSISTORS EQUIPMENT gt RECEPTACLE VIEWED FROM PIN OR RECEPTACLE END PCI 1 2 15002 SWITCH 8202 IS VIEWEO FROM KNOB ENO FRONT WAFER i8 SIDE TOWARD CONTROL KNOB WAFER NEAREST CONTROL KNOB 15 SECTION A 1 SWITCH 5202 IN TRAD POSITION TABLE OF CONTACTS MADE SWITCK SECTION SWITCH POSITION TEL RAD RAD SEKR RAD RAD SPKR CONTACTS Wr 2 7 16 5 6 12 2 87 0 4 6 1 2 9 10 5 6 ken B PART OF SEALED RADIO FREQUENCY FILTER ASSEMBLY 3 CALL LA
4. RF Filter Assembly Components C 2328B GRA 39 and C 2329B GRA 39 RF Filter Assembly Components C 2328C GRA 39 and 2329 39 Buzzer Assembly 05101 05201 Buzzer Adjustment DS1OT or 5201 Call Lamp and Control Relay Replacement A B and Remote Control Unit Chassis Component Local Control Unit Chassis Component Remote Control Unit Panel Assembly Component Replacement Local Control Unit Panel Assembly Component Replacement Battery Cable 2 45 Clamping Catch Replacement TEL REMOTE RADIO Switch S102A of C 2329 GRA 39 and C 2329A GRA 39 iae cerdo Un uie ad 2 48 Control Radio Set C 2328 GRA 39 Remote Control Unit Schematic Diagram Control Radio Set C 2328A GRA 39 Remote Control Unit Schematic Diagram Control Radio Set C 2328B GRA 39 Remote Control Unit Schematic Diagram Control Radio Set C 2328C GRA 39 Remote Control Unit Schematic Diagram Control Radio Set C 2329 GRA 39 Local Control Unit Schematic Diagram
5. Es CH 1 C EL SHA 4 sisseu 21 2 06 0666 WL TM 11 5820 477 30 BOTTOM VIEW PRINTED CIRCUIT BOARD 4859 013 2 Figure 2 12 Local Control Unit Chassis Component Replacement Sheet 2 of 2 TM 11 5820 477 30 2 14 Panel Parts Replacement This task covers Replacement INITIAL SETUP Tools Tool Kit Electronic Equipment TK 105 G NOTE Procedures described in this paragraph are typical for local control unit all models and remote control unit all models Replacement figures 2 13 and 2 1 4 Most of the panel components on the RA 39 are removed by unscrewing attaching hardware and or unsoldering wires The components are easily accessed directly from the front panel CAUTION Do not use a soldering gun damaging voltages can be induced in the components Use a pencil type soldering iron with a 25 watt maximum capacity Both control units are transistorized If only at operated irons are available use an isolating transformer NOTE When removing soldered leads tag each lead as it is unsoldered from its terminal 1 Release clamp on each side of control unit and slide chassis out of case 2 Unsolder wire s from component 3 Remove attaching hardware if applicable and remove component from front panel 4 Position replacement component on front panel Secure with attaching hardware i
6. 9 CALL LAMP CONTROL RELAY 18 SEALED UNIT TMB826 4 38 05 Tua FO 3 Control Radio Set C 2328B GRA 39 Remote Control Unit Schematic Diagram FP 5 FP 6 blank 8 CALL LAMP CONTROL IS SEALED UNIT ee CONNECTOR Gen e ua mer S 5 11 5820 477 30 l paro Aro H l pues ee LI E TIn E 1 7 PREAMPLIFIER R PF TEC i i eno MANDSET MIKE BRD mil 1 1 1 HANDSET NOTES 1 REFERENCE DESIGNATIONS ARE ABBREVIATED PREFIX THE DESIGNATION WITH UNIT NUMBER CR ASSEMBLY DESIGNATION OR BOTH 2 UNLESS OTHERWISE INDICATED RESISTANCES ARE IN OHMS CAPACITANCES ARE IN UT TRANSISTORS ARE 28526 INDICATES EQUIPMENT MARKING 4 RECEPTACLE VIEWED FROM PIN OR RECEPTACLE END 4704 W i T202 5 TRANSFORMER TERMINAL IMPEDANCES Test Cite a es mm c 9206 151 cons L W 1 1203 KROR NOTE 9 20 20 W 2 1 1 69 mn K i 6 SWITCH 202 13 VIEWED FROM KNOB END FRONT OF ceso 2203 1 WAFER 18 SIDE TOWARD CONTROL WAFER NEAREST B 5 CONTROL XNOB IS SECTION Wel x 9207 i 7 SWITCH 8202 SHOWN IN RAD POSITION
7. 1 2 1 1 Scope This manual covers direct support DS maintenance of Radio Set Control Group AN GRA 39 AN GRA 39A RA 39B and AN G RA 39C figure 1 1 It includes instructions and data relevant to direct support maintenance for troubleshooting component replacement and where applicable component adjustment Where information applies to all models covered by this manual the equipment shall be referred to as AN GRA 39 Where information applies to all component local control units the equipment shall be referred to as 2329 GRA 39 Where information applies to all component remote control units the equipment shall be referred to as C 2328 GRA 39 1 2 Consolidated Index of Army Publications and Blank Forms Refer to the latest issue of DA PAM 25 30 to determine whether there are new editions changes or additional publications pertaining to the equipment TM 11 5820 477 30 1 3 Maintenance Forms Records and Reports a Reports of Maintenance and Unsatisfactory Equipment Department of the Army forms and procedures used for equipment maintenance will be those prescribed by DA Pam 738 750 as contained in Maintenance Management Update b Reporting of item and Packaging Discrepancies Fill out and forward SF 364 Report of Discrepancy ROD as prescribed in AR735 11 2 DLAR 4140 55 SECNAVINST 4355 18 AFR 400 54 MCO 4430 3 c Transportation Discrepancy Report TDR SF 361 Fill out and forwa
8. 1 4 2 4 0 18 3 4 11 12 CALL COMP CONTROL RELAY SEALED UNIT TM 82O 477 35 C5 TM 2 FO 7 Control Radio Set C 2329B GRA 39 Local Control Unit Schematic Diagram 13 14 blank TM 11 5820 477 30 NOTES 1 REFERENCE DESIGNATIONS ARE ABBREVIATED PREFIX THE DESIGNATION WITH UNIT NUMBER OR ASSEMBLY DESICNATION BOTH 2 UNLESS OTHERWISE INDICATED RESISTANCES ARE IN OHMS CAPACITANCES ARE IN UT TRANSISTORS ARE 2F526 CONNECTOR IB LL INDICATES EDUIPMENT MARKING 6 RECEPTACLE VIEWED FROM PIN OR RECEPTACLE END HANDSET MIKE O 5 I 1 NOTE 5 I HANDSET e02 lt k HANDSET Gs BE 20 ano a S De l PHONE EMITTER MANOSET MIKE I FOLLOWERI 5 TRANSFORMER TERMINAL TMPEDANCES 16 Foe 1 r 1 HANDSET 1 t PUSM TO TALK T SWITCH 5202 IS VIEWED FROM KNOB END FRONT HE 1 i WAFER IS SIDE TOWARD CONTROL WAFER NEAREST eno L A CONTROL KNOB 18 SECTION La 2 7 SWITCE 8202 SEOWN IN REMOTE POSITION 1 E 5 d I e um ash Le sl St B 30 TO TDIG CONNECTED FOR i NOMINA MINE 9 1 VOLTS gt E A CALL LANP CONTROL IS SEALED UNIT 1 CALL LAMP CONTROL RELAT 13 SEALED UNIT di TM 5820 477 35 6 2 Control Radio S
9. HAND SET PLUG P 102 d 2104 J 101 4 1 DA A 1 PREAMPLIFIER m 7 a COILED CORD RADIO SET JACK PHONE RESONANT RELAY AMPLIFIER GROUND gt Oma NOTE 11101 4p FL 102 ES 2 10 TM 11 5820 477 30 WOTES REFERENCE CESIGNATIONE ARE ABBREVIATED PREFIX THE DESIGNATION WITH UNIT NUMBER OF ASSEMBLY DESIGNATION OR BOTH UNLESS OTHERWISE INDICATED RESISTANCES ARE IN OHMS EQUIPMENT MARKING CONNECTORS ARE VIEWED FROM THE END DU 8 EWIICHES ARE VIEWED THE KNOB END SWIC F REMOTE POSTION TABLE OF CONTACTS MADE Teo SECTION SIDA FRONT SWITCH POSTION TEL REMOTE RADIO CONTACTS 31 La t 534 MU 8 24 1012 14 112 GR 24 1012 34 4 SWITCH S10 SHOWN IN OFE POSTION SU 30 BATTERIES CONNECTED IN SERES 9 NOMINAL 9 YOLTS DC Control Radio Set C 2329 GRA 39 Local Control Unit Functional Block Diagram FP 19 FP 20 blank PIN 068233 000 This fine document Was brought to you by me Liberated Manuals free army and government manuals Why do I do it I am tired of sleazy CD ROM sellers who take publicly available information slap watermarks and other junk on it and sell it Those masters of search engine manipulation make sure that their sites that sell free information
10. 3 22 LS amm id d B m u m E tuu E22 Ri RP24 780 1890 sens 33 eo 4264 4 R2 220 i BE Puo ORIVE Get 03 AEE NOTE 8 gt Am e 2208 AND 0207 SELECTED FOR BETA RATING BETWEEN 38 AND 60 AFFECTS CUTPUT TM 11 5820 477 30 NOTES i REFERENCE DESIGNATIONS ARE ABBREVIATED PREFIX THE DESIGNATION WITH UNIT NUMBER OR ASSEMBLY DESIGNATION OR BOTH 2 UNLESS OTHERWISE INDICATED RESISTANCES ARE OMMS CAPACITANCES ARE IN UP TRANSISTORS ARE 28526 LL cares MARKING 4 RECEPTACLE VIEWED FROM PIN OR RECEPTACLE END P201 SWITCH 8202 18 VIEWED FROM KNOB END PRONT OF WAFER IS SIDE TOWARD CONTROL KNOB NEAREST CONTROL KNOB 48 SECTION A SWITCH 8200 SHOWN POSITION T OF CONTACTS MADE SWITCH SECTION TEL RAD RAO SPKR TM5825 477 35 3 Control Radio Set C 2328 GRA 39 Remote Control Unit Schematic Diagram 1 2 blank HANDSET NEE 5 GRO HANDSET PHONE SIX 30 BATTERIES CONNECTED FOR NOMINAL NINE 19 2 p ma uem mon nort P o 1204 PREAMPLIFIER
11. HANDSET H t38 U AUDIO LINE TRANSFORMER 3 T201 5 TONE GENERATOR i OSCILLATOR BUZZER MAGNETO Q204 P O 202 SOM ______ ca EARPIECE P O HANOSET 5 8700 P70 5202 P O 5202 AUDIO POWER AUDIO LOUDSPEAKER Sr TRANSFORMER AMPLIFIER TRANSFORMER CS 26i E T202 9206 9207 T203 BATTERY POWER SUPPLY 6 6 TO 9 0 vDC TM5820 477 35 2 06 8 1 wesbeig Y42019 yum 6 28262 2 DU 6 82 2 5 6 VHO v82EC O SHUN 10u09 p 1 PREAMPLIFIER g kapu q l l AUDIO AMPLIFIER Q20 AUDIO AMPLIFIER 202 TO FROM i LOCAL CONTROL UNIT MICROPHONE P O H 138 U AUDIO LINE TRANSFORMER 01 TONE GENERATOR OSCILLATOR BUZZER TO BATTERY 358 9205 P O 5202 05201 POWER SUPPLY J CALL LAMP BUZZER VOLUME 77 i EARPIECE P O HANDSET H 138 U 0 TEL RAD SPKR RAD SPKRI P O 5202 RELAY K201 Q P 0 5202 9 AUDIO AUDIO POWER AUDIO fone DRIVER TRANSFORMER AMPLIFIER TRANSFORMER 1 0203 9206 0207 T203 VOLUME R208 TO CALL LAMP CONTROL RE
12. 3 CALL LAMP DOES NOT LIGHT WHEN RINGER BUTTON ON REMOTE CONTROL UN A B AND C MODELS ONLY Step 1 Check for defective lamp If defective replace 2 14 Step 2 Check for defective call lamp control relay by checking relay windings out of the Resistance between terminals 1 and 2 should be 5 000 ohms resistance betwee and 4 should be infinite If defective replace paragraph 2 12 2 15 TM 11 5820 477 30 Table 2 4 Troubleshooting Local Control Unit cent Malfunction Test or Inspection Corrective Action NOTE In later units of the A B and C models ringing signals are applied through an RF filter assembly Check the continuity of the RF filter figures FO 6 through FO 8 if the call lamp or the buzzer of either control unit is not activated 4 NO OPERATION FOR ANY POSITION OF TEL REMOTE RADIO SWITCH Step 1 Check switch S101 by checking for battery voltage at contact 5 when switch is in ON position If defective replace paragraph 2 14 Step 2 Check capacitor C111 If defective replace paragraph 2 13 Step 3 Check switch S102 for continuity of switch contacts for each position If defective replace paragraph 2 14 5 TELEPHONE COMMUNICATIONS ARE RECEIVED BUT NOT SENT OUT TO REMOTE CONTROL UNIT Step 1 Check for defective preamplifier audio amplifiers Q101 and Q102 by checking for battery voltage at terminal 2 of component board A102 If defective replace 0101 an
13. Control Radio Set C 2329A GRA 39 Local Control Unit Schematic Diagram Control Radio Set C 2329B GRA 39 Local Control Unit Schematic Diagram Control Radio Set C 2329C GRA 39 Local Control Unit Schematic 1 FP 15 Control Radio Set C 2328 GRA 39 Remote Control Unit Functional Block Diagram FP 17 Control Radio Set C 2328 GRA 39 Local Central Unit Functional Block Diagram 18 TM 11 5820 477 30 LIST OF TABLES Title Page Remote Control Unit Dc 2 9 Local Control Unit Dc 2 5 Troubleshooting Remote Control 2 9 Troubleshooting Local Control Unit d 2 15 HOW TO USE THIS MANUAL This manual is designed to help you keep your control radio set in good operating condition The front cover index is provided for quick reference to important information There is also an index located in the final pages for use in locating specific items of information Warning pages are located in the front of this manual You should learn the warnings before performing any maintenance on the equipment Paragraphs in this manual are numbered by chapter and order of appearance within a chapter A subject index appears at the beginning of each chapter listing sections that are
14. 28183 l 1 gt 1 TABLE OF CONTACTS MADE eed PES e pae rosvon i 7220 11 1 l 9 GE tte 1 E jk AR 7 77 Ba SAT CONNECTED FOR 1 12 2 0 10 NOMINAL NIME 2 i VOLTS 5 a 3 CALL LAMP CONTROL RELAY I SEALED UNIT TM 5820 477 35 C6 TM 1 FO 4 Control Radio Set C 2328C GRA 39 Remote Control Unit Schematic Diagram FP 7 FP 8 blank HANDSET CONNECTOR 0616 HANDSET MIKE TCC T i 1 1 1 i map UBH TO TALK Ke MANOSET Baone T lt OAD Re PHONE T 1 1 HANDSET i 1 HANDSET D PUSH TO TALK TC C SWITCH T opp Siz 30 BATTERIES 5 CONNECTEO FOR NOMINAL NINE 19 VOLTS ba so Q y 5 note pue l D EMITTER FOLLOWERS FO 5 TM 11 5820 477 30 NOTES REFERENCE DESIGNATIONS ARE ABBREVIATED PREFIX THE OESIGNATION WITH UNIT NUMBER OR ASSEMBLY CESIGNATION OR BOTH 2 UNLESS OTHERWISE INDICATED RESISTANCES ARE IN Gen CAPACITANCES ARE IN UF TRANSISTORS ARE 2NS26 x TH weicares f viemENT MARKING 4 RECEPTACLE WEWED FROM PIN DR RECEPTACLE END EIU 04 8 SWITCH 5102 15 VIEWED FROM KNOB END FRONT WAFER 15 SIDE TOWARD CONTROL KNOB WAFER N
15. THEN JOT DOWN THE DOPE ABOUT IT ON THIS FORM CAREFULLY TEAR IT OUT FOLD IT AND PUBLICATION NUMBER PUBLICATION DATE PUBLICATION TITLE Control Radio Set Groups AN GRA 39 39A 39B 39C TM 11 5820 477 30 1 July 1991 BE EXACT PIN POINT WHERE IT 5 f N THIS SPACE TELL WHAT 15 WRONG PACE Gergen AND WHAT SHOULD BE DONE ABOUT IT NO GRAPH NO NO TH AR ALONG PERIORATED LINE PRINTED NAME GRADE OR TITLE AND TELEPHONE NUMBER SIGN HERE D A FORM 2028 2 PREVIOUS EDITIONS P S If YOUR OUTFIT WANTS TO KNOW ABOUT YOUR JUL 79 ARE OBSOLETE RECOMMENDATION MAKE A CARBON COPY OF THIS AND GIVE IT TO YOUR HEADQUARTERS ee FILL IN YOUR UNIT S ADDRESS DEPARTMENT OF THE ARMY FOLD BACK 3811031804198301 OFFICIAL BUSINESS Commander US Army Communications Electronics Command and Fort Monmouth ATTN AMSEL LC LM LT Fort Monmouth New Jersey 07703 9988 1 FOLD BACK RECOMMENDED CHANGES TO EQUIPMENT TECHNICAL PUBLICATIONS SOMETHING WRONG WiTH ruis PueLicATION 5 COMPLETE ADDRESS THEN JOT DOWN THE FROM PRINT YOUR UNIT S CO DOPE ABOUT IT ON THIS FORM CAREFULLY TEAR IT OUT FOLD IT AND DROP IT IN THE MAIL DATE SENT bx 4444 Val AR Ko p PUBLICATION NUMBER PUBLICATION DATE PUBLICATION TITLE Control Radio Set Groups TM 11 5820 477 30 1 July 1991 AN GRA
16. HIOOEN NOTES 1 SUPPLY VOLTAGE TO UNIT 15 9 VOLTS 2 ALL MEASUREMENTS MADE WITH NO SIGNAL APPLIED 3 LINE TERMINALS TO UNIT ARE OPEN 4 MEASUREMENTS MADE WITH HANDSET PUSHBUTTON OEPRESSED UNLESS NOTED BY ASTERISK 5 ALL MEASUREMENTS TO CHASSIS GROUND C 2328 GRA 39 4859 003 1 068 0099 WL TM 11 5820 477 30 79214 ASSY UNDER RF ASSY 620 1 1 See LINX M c216 Lc217 CONNECTED TO RF FILTER 557 7 B C 2328B GRA 39 c221 C214 201 C C 2328C GRA 39 4859 003 2 Figure 2 2 Remote Control Unit C 2328 GRA 39 Component Location and Voltages Sheet 2 of 3 TM 11 5820 477 30 o 0909000090000009000 CALL LAMP CALL LAMP CONTROL RELAY CALL LAMP CONTROL RELAY MOUNTING SCREW HOLES 2 D C 2328A GRA 39 C 2328B GRA 39 AND C 2328C GRA 39 4059 403 3 Figure 2 2 Remote Control Unit C 2328 GRA 39 Component Location and Voltages Sheet 3 of 3 2 8 TM 11 5820 477 30 Table 2 3 Troubleshooting Remote Control Unit Malfunction Test or Inspection Corrective Action 1 NO RINGER SIGNAL OUTPUT Step 1 Check magneto G201 for output voltage If output is inadequate replace magneto paragraph 2 9 Step 2 Check capacitor C214 If defective replace paragraph 2 13 Step 3 Check audio line transformer T201 by checking winding resistance between terminals 5
17. PAGE PARA FIGURE TABLE NO GRAPH NO NO AND WHAT SHOULD BE DONE ABOUT IT PRINTED NAME GRADE OR TITLE AND TELEPHONE NUMBER SIGN HERE DA 2098 29 PREVIOUS EDITIONS P S IF YOUR OUTFIT WANTS TO KNOW ABOUT YOUR gt 179 407 2 ARE OBSOLETE RECOMMENDATION MAKE A CARBON COPY OF THIS AND GIVE IT TO YOUR HEADQUARTERS FILL IN YOUR UNIT S ADDRESS FOLD BACK DEPARTMENT OF THE ARMY OFFICIAL BUSINESS Commander US Army Communications Electronics Command Fort Monmouth ATTN AMSEL LC LM 1LT Fort Monmouth New Jersey 07703 9988 FOLD BACK emm t EL E JNN 031 8039030 Neil By Order of the Secretary of the Army CARL E VUONO General United States Army Chief of Staff Official PATRICIA P HICKERSON Colonel United States Amy The Adjutmant General DISTRIBUTION be distributed in accordance with DA Form 12 51 block 2236 Direct Support General Support Maintenance requirements for TM 11 5820 477 30 U S GOVERNMENT PRINTING OFFICE 1994 0 300 421 01218 TE E n HANDSET PHONE 3 E Six BA BATTERIES CONNECTED FOR NOMINAL NINE 9 VOLTS 2 Iu eoe I nm PREAMPLIFIER a
18. 1 11 Safety Care and Handling Do not use ungrounded equipment Throughout this manual are warnings cautions and notes designed to protect personnel and equipment Learn the warnings on the warning page before attempting to install operate or perform maintenance on the equipment and observe all warnings and cautions as you come upon them in the text Learn the applicable warnings and cautions associated with each item of additional equipment used in the system as outlined in their respective technical manual Section Ill PRINCIPLES OF OPERATION Para Page 1 12 Functioning of Remote Control Unit 2328 39 1 5 Stage Analysis of Remote Control Unit 2328 39 1 9 1 14 Battery Voltage Distribution Remote Control Unit C 2328 GRA 39 4 1 11 Functioning of Local Control Unit 2329 39 1 13 1 16 Stage Analysis of Local Control Unit 2329 39 1 16 1 17 Battery Voltage Distribution Local Control Unit 2329 39 1 18 1 12 Functioning of Remote Control Unit C 2329 GRA 39 figures 1 3 1 4 NOTE The following discussion applies to all models of Control Radio Set C 2328 GRA 39 except where noted 1 5 TM 11 5820 477 30 a Telephone Operation Between Sites 1 Ringing The operator at the local site is signaled when t
19. 1 5 Equipment Data de e e Safety Care and Handling soo ehm 1 5 0 5 1 k The information in this section applies to all models of the radio set control group except where noted TM 11 5820 477 30 1 7 Equipment Characteristics Capabilities and Features The AN GRA 39 is used in conjunction with a radio receiver transmitter or a local battery switchboard to expand the interfacing capability of the radio or switchboard When connected with a radio the AN GRA 39 enables the operator to transmit and receive voice frequency communications through the radio for a distance of up to two miles 3 3 kilometers from the radio When connected with a switchboard the AN GRA 39 is used 10 accomplish net radio interface NRI by which voice communication is established between a field telephone switchboard subscriber and a radio In either application communication can be initiated by the remote control unit operator or by the local control unit operator Transmissions initiating at the local control unit do not involve the remote control unit However transmissions initiating at the remote unit require the presence of an appropriately set local unit in the system When a handset is connected to both the local control unit and the remote control unit two way communication is possible between the two units independent of any radio or switchboard
20. 11 TM 11 5820 477 30 1 Receive operation The battery voltage is connected to pin D of P201 and contact 10 of switch S202B Switch S202B contacts 10 and 8 and relay K201 terminals 4 and 3 connect the battery voltage to pin F of P201 2 Transmit operation The battery voltage is connected through switch S202B contacts 10 and 8 to terminal 1 of relay K201 When the handset push to talk switch is pressed a ground is applied through resistor R225 to terminal 5 of relay K201 and causes the relay to energize Relay K201 terminals 4 and 2 connects the voltage to terminal 4 of component board A201 to provide operating voltage for oscillator Q204 From terminals 4 and 2 of relay K201 voltage is applied through switch S202B contacts 2 and 12 to terminal 3 of component board A201 to provide operating voltage for audio amplifier Q205 and pin J of P201 to provide operating voltage to the preamplifier Q201 and Q202 b RAD SPKR Position With the TEL RAD RAD SPKR switch in the RAD SPKR position battery voltage is applied to audio driver Q203 and power amplifiers Q206 and Q207 during receive operation and to the preamplifier C1201 Q202 and the tone generator Q204 C1205 during transmit operation 1 Receive operation The battery voltage is connected to pin D of P201 to provide operating voltage to audio driver 0203 Battery voltage is connected to F of P201 through switch 52028 contacts 10 and 9 and relay K201 terminals 4 and
21. 3 to provide operating voltage to audio driver Q203 Battery voltage for power amplifiers 0206 Q207 is connected to terminal 16 of component board A201 through switch 5202 contacts 6 and 5 NOTE In this condition contacts 9 and 10 of switch S202B connect terminal 5 of transformer T203 to capacitor C215 to apply an ac ground 2 Transmit operation When the handset push to talk switch is pressed ground is applied through resistor R225 to terminal 5 of relay K201 and causes the relay to energize Battery voltage is connected through switch S202B contacts 10 and 9 and relay K201 terminals 4 and 2 to terminal 4 of component board A201 to provide operating voltage for oscillator Q204 Switch 5202 contacts 2 and 1 connects the battery voltage to terminal 3 of component board A201 to provide operating voltage for audio amplifier Q205 and to pin J of P201 to provide operating voltage for the preamplifier Q201 and Q202 TEL Position With the TEL RAD RAD SPKR switch in the TEL position battery voltage is applied to the preamplifier Q201 Q202 during both transmit and receive operation The voltage is connected from the battery through switch 5202 contacts 10 and 7 to pin J of P201 d Battery Supply The battery supply consists of six BA 30 D cells connected in series Capacitor C215 is used for ac decoupling of the battery supply NOTE in the A B and C models the call lamp circuit is connected directly to the ba
22. 39 39A 39B 39C BE EXACT PIN POINT WHERE ITIS iN THIS SPACE TELL WHAT IS WRONG FIGURE AND WHAT SHOULD BE DONE ABOUT IT NO TEAR ALONG PERIORATED LINE PRINTED NAME GRADE OR TITLE AND TELEPHONE NUMBER SIGN HERE 8 aim FORM ADD PREVIOUS EDITIONS P S IF YOUR OUTFIT WANTS TO KNOW ABOUT YOUR A 2028 2 asm ees emm a asm lt ws a 1 JUL 79 ARE OBSOLETE RECOMMENDATION MAKE A CARBON COPY OF THIS AND GIVE IT TO YOUR HEADQUARTERS e vm FILL IN YOUR UNIT S ADDRESS DEPARTMENT OF THE ARMY FOLD BACK 3NI1 031v W4Od3l dd HV31 OFFICIAL BUSINESS Commander US Army Communicatlons Electronics Command ond Fort Monmouth ATTN AMSEL LC LM 1LT Fort Monmouth New Jersey 07703 9988 I A m lis s a Y E FOLD BACK IL AR ALONG PERIEORATED LINE RECOMMENDED CHANGES TO EQUIPMENT TECHNICAL PUBLICATIONS SOMETHING WAONE PUBLICATION FROM PRINT YOUR UNIT S COMPLETE ADDRESS IT OUT FOLD IT AND PUBLICATION DATE PUBLICATION TITLE Control Radio Set Groups 1 July 1991 39 39 398 39 THEN JOT DOWN THE DOPE ABOUT IT ON THIS FORM CAREFULLY TEAR PUBLICATION NUMBER TM 11 5820 477 30 BE EXACT PIN POINT WHERE IT 15 iN THIS SPACE TELL WHAT 15 WRONG
23. DA Pam 25 30 The Army Maintenance Management System 5 DA Pam 728 750 A 3 Field Manuals First Aid for Goldere FM 21 11 A 4 Technical Manuals Operator s Organizational Direct Support and General Support Maintenance Manual Spectrum Analyzers TS 723A U TS 723B U TS 723C U and FS 723B D iu cosi TM 11 6625 255 14 Operator s and Organizational Maintenance Manual for Radio Set Control Groups AN GRA 39 NSN 5820 00 889 3680 AN GRA 39A NSN 5820 00 949 9909 AN GRA 39B NSN 5820 00 949 9909 and AN GRA 39C 5820 01 196 0204 Organizational and Direct Support Maintenance Repair Parts and Special Tools List Radio Set Control Groups AN GRA 39 NSN 5820 00 889 3680 AN GRA 39A NSN 5820 00 949 9909 AN GRA 39B NSN 5820 00 949 9909 and AN GRA 39C NSN 5820 01 196 0204 Operator s Organizational DS GS and Depot Maintenance Manual Multimeters ME 26A U ME 26B U NSN 6625 00 360 2493 ME 26C U NSN 6625 00 646 9409 and ME 26D U NSN 6625 00 913 9781 TM 11 6625 200 15 Operator and Organizational Maintenance Manual Voltmeter Meter ME 30A U and Voltmeters Electronic ME 30B U ME 30C U ME 30E U TM 11 6625 320 12 Operator s Organizational DS GS and Depot Maintenance Manual Multimeter 6 352
24. GRA 39 and C 2329A GRA 39 comprising the AN GRA 39A have sealed RF filter assemblies consisting of unspecified components that cannot be replaced individually if a fault is detected the entire sealed unit must be replaced 1 Release clamp on each side of control unit and slide chassis out of case 2 Tag and unsolder wires connected to RF filter assembly components 1 and remove components from chassis 2 3 Position new RF filter assembly components 1 on chassis 2 and solder tagged wires to proper terminals on RF components 4 Slide chassis into case and secure with clamps TM 11 5820 477 30 1 1 C216 C217 A REMOTE CONTROL UNIT 1 1 R122 C113 B LOCAL CONTROL UNIT Figure 2 6 RF Filter Assembly Components C 2328B GRA 39 and C 2329BIGRA 39 2 24 TM 11 5820 477 30 2 10 RF Filter Assembly A B and C Models Only cont 1 1 C221 C214 TOP VIEW BOTTOM VIEW 1 1 1 C218 C219 L201 PRINTED CIRCUIT BOARD A202 A REMOTE CONTROL UNIT 1 1 C116 1102 BOTTOM VIEW PRINTED CIRCUIT BOARD A102 B LOCAL CONTROL UNIT 4859 008 Figure 2 7 RF Filter Assembly Components C 2328C GRA 39 and C 2329C GRA 39 2 25 TM 11 5820 477 30 2 11 Buzzer Assembly DS101 or DS201 This task covers Removal b Installation c Adjustment INITIAL SETUP Tools Personnel Required Tool Kit Electronic Equipment TK 105 G 2 Technicians Spanner Wrench NOTE Buzzer assem
25. TEL Make a resistance measurement between terminal B of AUDIO receptacle J101 and terminal B of RADIO receptacle P101 It should be 560 ohms R123 If itis O ohm the MWO was not applied or it was done incorrectly 2 Perform an operational test as follows a Connect field wire between the remote and local control units and set the control switches to TEL position b Using the handset connected to the AUDIO receptacles communicate between the two units If the local control unit operator has no sidetone and cannot hear the remote control unit operator the MWO was performed incorrectly d To repair equipment that fails the tests step c above proceed as follows Refer to figure 2 18 Inspect switch S102A rear to determine if the blue white wire from terminal B of J101 is connected to terminal 4 or 9 of 5102 rear A figure 2 18 1 If the wire is connected to terminal 4 of 102 rear do not disturb the blue white wire but cut the jumper from terminals 4 and 9 of the switch Connect a 560 ohm resistor NSN 5905 00 682 41 09 same as resistor R115 in 11 5820 477 35P between terminal B of J101 and terminal 9 of 5102 rear B figure 2 18 Put insulation sleeving on the resistor leads 2 If the blue white wire is connected to terminal 9 of the switch DO NOT REMOVE THE JUMPER FROM TERMINAL 4 OF THE SWITCH Instead remove both the blue white wire and the jumper from terminal 9 of the switch Strip 3 8 inch of
26. and 6 of transformer paragraph 2 5 If defective replace paragraph 2 13 Step 4 Check for proper mechanical functioning and continuity of microswitch 5203 If defective replace paragraph 2 13 2 BUZZER IS NOT ACTIVATED WHEN RINGER BUTTON ON LOCAL CONTROL UNIT IS PRESSED Step 1 Check capacitor C214 If defective replace paragraph 2 13 Step 2 Check for proper mechanical functioning and continuity of microswitch S203 If defective replace paragraph 2 13 3 CALL LAMP DOES NOT LIGHT WHEN RINGER BUTTON ON LOCAL CONTROL UNIT IS PRESSED A B AND C MODELS ONLY Step 1 Check for defective lamp If defective replace paragraph 2 14 Step 2 Check for defective call lamp control relay by checking relay windings out of the circuit Resistance between terminals 1 and 2 should be 5 000 ohms resistance between terminals 3 and 4 should be infinite If defective replace paragraph 2 12 NOTE In A B and C models ringing signals are applied through an RF filter assembly Check the continuity of the RF filter figures FO 2 through FO 4 if the call lamp or the buzzer of either control unit is not activated Step 3 Check for defective buzzer DS201 If defective replace paragraph 2 11 2 9 TM 11 5820 477 30 Table 2 3 Troubleshooting Remote Control Unit rent Malfunction Test or Inspection Corrective Action 4 NO OPERATION FOR ANY POSITION OF TEL RAD RAD SPKR SWITCH Step 1 Check switc
27. are the same for both control units on all three models specified a Removal figure 2 1 1 Release clamp on each side of control unit and slide chassis out of case 2 Remove six panhead screws securing front panel 1 to chassis 3 Pull out RINGER button 2 until it is disengaged from magneto connecting link freeing front panel 1 from chassis 3 4 Loosen call lamp control relay mounting screws 4 and lift call lamp control relay 5 from component board A101 or A201 6 CAUTION Do not use a soldering gun damaging voltages can be induced in the components Use a pencil type soldering iron with 25 watt maximum capacity Both control units are transistorized If only at operated iron is available use an isolating transformer NOTE When removing soldered leads tag each lead as it is unsoldered from its terminal to facilitate reconnection b Tag and unsolder wires connected to call lamp control relay 5 and remove relay b Installation CAUTION Do not use a soldering gun damaging voltages can be induced in the components Use a pencil type soldering iron with 25 watt maximum capacity Both control units are transistorized If only at operated iron is available use an isolating transformer TM 11 5820 477 30 1 Solder tagged wires to proper terminals on call lamp control relay 5 2 Secure relay to component board A101 or A201 6 by engaging mounting screws 4 in screw holes 7 and tightening 3
28. filter FL104 by checking resistance of filter paragraph 2 5 If defective replace paragraph 2 13 Step 7 Check for defective RADIO connector P101 by checking continuity of connector pin D If defective replace paragraph 2 14 TM 11 5820 477 30 Section Ill MAINTENANCE PROCEDURES Para Page dto dta iot 2 19 Magneto 6101 or G201 2 20 RF Filter _ 2 24 Buzzer Assembly DS101 or 05201 Call Lamp Control Relay A B and C 2 32 Chassis Components 2 34 Panel 1 ees Retractable Battery Cable 2 44 Front and Rear Clamping 2 46 2 17 Error in Applying MWO 11 5820 477 30 1 2 47 2 8 General Maintenance procedures described in this section apply to all four models of the Radio Set Control Group covered by this manual except where noted All procedures require tool kit TK 105 G This tool kit includes a soldering iron During procedures requiring soldering and unsoldering be sure to use the soldering iron in the kit Do not use a soldering
29. gun or a soldering iron with a capacity in excess of 25 watts since use of either of these can damage equipment components TM 11 5620 477 30 2 9 Magneto G101 or G201 This task covers a Removal b Installation INITIAL SETUP Tools Tool Kit Electronic Equipment TK 105 G NOTE Magneto G101 is located on local control unit Magneto G201 is located on remote control unit Removal inspection and installation procedures are the same for both a 2 4 2 5 1 Release clamp on each side of control unit and slide chassis out of case 2 Press RINGER button fully and hold cam so that if cannot move 3 Pull RINGER button forward until it is disengaged from connector link 1 4 Remove four panhead screws 2 and four lockwashers 3 attaching magneto 4 to chassis CAUTION Do not use a soldering gun damaging voltages can be induced in the components Use a pencil type soldering iron with 25 watt maximum capacity Both control units are transistorized If only at operated iron is available use an isolating transformer NOTE When removing soldered leads tag each lead as it is unsoldered from its terminal to facilitate reconnection 5 Tag and unsolder wires connected to magneto 4 6 Remove magneto 4 2 20 TM 11 5820 477 30 7 4859 005 48590 006 Figure 2 5 Magneto G101 Local Control Unit Replacement 2 21 TM 11 5820 477 30 2 9 Magneto G101 or
30. the LINE binding post From here the signals are coupled to the remote control unit over the connecting field wire Signals from the receiver are also applied through S102 to the local control unit operators earpiece d Sidetone During telephone communication 2 or transmission of voice signals through the radio set para 1 15 1 a sidetone signal developed in the H 138 U microphone is applied to the H 138 U earpiece 1 TEL position Voice signals developed in the H 138 U microphone are applied through the preamplifier Q101 and Q102 T101 and S102 to the H 138 U earpiece 2 RADIO position Voice signals developed in the H 138 U microphone are applied through S102 T102 and FL104 to the radio set Sidetone developed in the radio set is applied through S101 to the H 138 U earpiece e Power Supply The chart below lists the circuits energized when the TEL REMOTE RADIO switch is in the position indicated 5102 Position Circuit Energized REMOTE Preamplifier Q101 Q102 Resonant relay amplifier 0103 Q104 Q105 Relay 101 Preamplifier Q101 Q102 6 Stage Analysis of Local Control Unit C 2329 GRA 39 figures FO 5 through FO 8 NOTE The following discussion applies to all models of Control Radio Set C 2329 GRA 39 except where noted Refer to schematic diagrams FO 5 FO 6 FO 7 and FO 8 for minor differences between models The setting of the TEL REMOTE RADIO switch determines the distribution of ba
31. 00 Hz signal is amplified rectified filtered and provides a direct current de voltage output to energize relay K101 When relay K101 is energized it applies a ground circuit in the radio set which causes the transmitter to be keyed This condition allows voice signals from the remote control unit present at filter FL101 to be applied through relay K101 to the attenuator The attenuator reduces the strength of the voice signals approximately the same amount as they were amplified in the remote control unit preamplifier Signals present at the output of the attenuator are then coupled through switch 5102 transformer T102 and filter FL104 to the radio set transmitter Filter FL104 provides further rejection to the 3 900 Hz tone signal 1 13 6 VHO 6262 2 201 6 1 er 8102 2 x EARPIECE AADO ser P O HANDSET RECEIVER H 138 U TEL o MAGNETO TO AND FROM REMOTE T AUDIO LINE 3900 5 EMITTER EMIT TER RELAY ET CONTROL TRANSFORMER AMPLIFIER FOLLOWER FOLLOWER TRANSMITTER UNIT QIO5 0104 El LLL SS ae Sy PREAMPLIFIER MA RENE 1 H I38 U MICROPHONE POSO AUDIO N HANDSET usi AMPUFER e KILER RADIO SET H 138 U FENIS TRANSMITTER Y POWER BATTERY POWER SU
32. 1 FO 2 FO 3 and FO 4 for minor differences between models The setting of the TEL RAD RAD SPKR switch determines the distribution of battery voltage to the stages in a through e below This action is described in paragraph 1 14 a Preamplifier Q201 and Q202 Audio amplifiers Q201 and Q202 amplify the low level audio signals developed in the handset microphone by approximately 57 decibels dB 1 Audio amplifier Q201 When the handset push to talk switch is pressed audio signals developed by the handset microphone are applied to pin D of J201 and pin A of P201 The audio signals at pin A of J204 are coupled by capacitor C201 to the base of Q201 The amplifier audio output of Q201 is coupled by capacitor C204 to the base of audio amplifier Q202 Resistors R201 and R205 forma voltage divider to establish the base to emitter forward bias Battery voltage is applied to Q201 through emitter swamping resistor R202 bypassed by capacitor C202 Resistor R206 is the collector load resistor Capacitor C203 shapes the high frequency output response of 0201 TM 11 5820 477 30 2 Audio amplifier Q202 The input audio signals to Q202 are amplified by approximately 33 dB Capacitors C204 C205 and C206 and resistors R203 R204 and R207 are functionally the same as their respective components in the Q201 circu t para 1 13aJ 1 Resistor R227 acts as part of the emitter resistance and also provides degenerative feedback The preamplifier output is conn
33. 25 watt maximum capacity Both control units are transistorized If only at operated irons are available use an isolating transformer 4 Unsolder battery cable 3 from feed through terminals 5 b Remove screw 6 and cable clamp 7 and remove battery cable 3 from case 8 b Installation figure 2 16 1 Wrap cable clamp 7 around cable 3 and mount clamp to case 8 with screw 6 CAUTION Do not use a soldering gun damaging voltages can be induced in the components Use a pencil type soldering iron with a 25 watt maximum capacity Both control units are transistorized If only at operated irons are available use an isolating transformer 2 Solder battery cable 3 to feed through terminals 5 3 Attach battery cable 3 to terminal 4 with three roundhead screws 1 and three lockwashers 2 2 40 4 Replace batteries in box 5 Slide chasis into case and secure with clamps g ys CAR LH e COMMIT LLM A 4 SNSSSS Hl CA i Figure 2 15 Battery Cable Replacement TM 11 5820 477 30 2 41 TM 11 5820 477 30 2 16 Front and Rear Clamping Catch This task covers Replacement INITIAL SETUP Tools Screwdriver Replacement figure 2 1 6 1 Release clamp hooks 2 Remove two flathead screws 1 and remove front clamping catch 2 or rear clamping catch 3 from case 4 3 Align clamping catch 2 or 3 with screw holes in cas
34. 5 Solder tagged wire s to proper component terminal s Slide control unit into case and secure with clamps 2 31 27 Jo 1995 jueuoduio sisseu 1 11 2 anbi 1 210 6587 201 T203 R219 C23 R224 2 can 20 R222 5201 R206 S20 ri LS SCH M EX 1 420 15 c215 16 R225 CR20 J203 J202 CR202 14 2328 39 P201 J204 Q204 SN Y C212 5 pum 8 1 CN R226 6 N28 R218 T e R209 6201 HIDDEN red 203 HIDDEN 6208 Te 9203 0206 E304 R214 Q207 R215 R216 02 227 0289 11 NL TM 11 5820 477 30 2 13 Chassis Parts Replacement cont MAGNE TO 2214 ASSY UNDER RF ASSY CONNECTING LINK cuis C216 c217 NNECTED TO N RF FILTER ASST BUTTON B C 2328B GRA 39 Figure 2 11 Re mote Control Unit Chassis Component Replacement Sheet 2 of 3 485888 42 2 33 TM 11 5820 477 30 PRINTED CIRCUIT BOARD C C 2328C GRA 39 4659412 3 Figure 2 11 Remote Control Unit Chassis Component Replacement Sheet 3 of 3 2 34 S c 2 JO 19945 2 sisseu2 5 8201 21 2 7 ac mum FLIO3 FLIO4 FLIO2 6 5 ons 3 e RIS E ua RNS 1 m
35. A AN GRA 39B and AN GRA 39C 2 1 TM 11 5820 477 30 Section DIRECT SUPPORT TROUBLESHOOTING Para Page 6808191 7 gt Preliminary 2 3 Dc Resistance of Transformers and 2 3 Remote Control Unit Troubleshooting 2 5 Local Control Unit Troubleshooting 2 12 2 3 General The first step in troubleshooting is to trace the fault to a specific system or subsystem The next step is to localize the fault to a particular assembly such as a printed circuit card The final step is to isolate the fault by tracing it to a defective component such as a resistor transformer or switch Fault isolation is limited to those items which may be repaired or replaced at direct support level This primarily includes replacement or repair by component replacement of the chassis assembly and panel assembly on each of the control units that make up the AN GRA 39 Some faults such as burned out resistors arcing and shorted relay coils and transformer windings can often be identified by sight smell or hearing Visual inspection is used to locate faults without testing or measuring circuits Most faults however must be isolated by checking voltages and resistances Dc resistance of transformers and coils will isolate a malfunction to a defective component on the chass
36. DIO SET GROUPS AN GRA 39 NSN 5820 00 889 3860 AN GRA 39A NSN 5820 00 082 3998 AN GRA 39B NSN 5820 00 949 9909 AN GRA 39C NSN 5820 01 196 0204 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 procedures please let us know Mail your letter DA Form 2028 Recommended Changes to Publications and Blank Forms or DA Form 2028 2 located in the back of this manual direct to Commander US Army Communications Electronics Command and Fort Monmouth ATTN AMSEL LC LM LT Fort Monmouth New Jersey 07703 5000 In either case a reply will be furnished direct to you CHAPTER 1 Section l Section ll Section 11 CHAPTER 2 Section l Section ll Section lll APPENDIX A APPENDIX B TABLE OF CONTENTS Page How to Use This INTRODUCTION 255 u General Equipment Description and 1 2 Principals of DIRECT SUPPORT MAINTENANCE 0 680 189 97 opea tari ee eb date Repair Parts Special Tools TMDE and Support Equipment Direct Support Troubleshooting 2 2 Ma
37. EAREST CONTROL KNOB 18 SECTION T SWITCH 102 SHOWN IN REMOTE POSITION CONTACTS MADE SWITCH SECTION SWITCH POSITION CONTACTS sick A TEL FRONT REMOTE RADIO 5 TEL AEMOT m D 3 4 1 42 TEL REMOTE RADIO TEL 5 Ima REMOTE 6 RESISTOR 25 INSTALLED PER MWO 11 5820 477 30 1 EL 5820 477 35 C TW Control Radio Set C 2329 GRA 39 Local Control Unit Schematic Diagram FP 9 FP 10 blank MANDSET CONNECTO HANDSET MIKE 5 nanoa f US H TO TALK SWITCH K i NRI DE 4 RADIO SET CONNECTOL PHON 1 1 HANOSET 0 PCR USH TO TALK H SWiTCH H A 30 CONNECTEL FOR NOMINAL 9 VOTE 86 47 AT TENJATOR EE 430 wi TM 11 5820 477 30 NOTES REFERENCE DESIGNATIONS ARE ABBREVIATED PRCF IX THE DESIQNATION WITH UNIT NUMBER OR ASSEMBLY DESKNATION OR BOTH 2 UNLESS OTHERWISE INDICATED RESISTANCES ARE IN oui CAPACITANCES ARE IN UF TRANSIBTORS ANE 21528 EQUIPMENT HARKINS 4 RECEPTACLE ViEWEO FROM PIN O RECEPTACLE END 4 6 SWITCH 02 18 VIEWED FROM KNOB FRONT OF WAFER IS SIDE TOWARD CONTROL WAFER NEAREST CONTROL KNOB 1 SECTION 7 SWITCH 102 SHOWN IN REMOTE POSITION TABLE OF CONTACTS MADE ECH 102
38. G201 cont b Installation figures 2 4 and 2 5 1 Position magneto 4 in chassis CALITION Do not use a soldering gun damaging voltages can be induced in the components Use a pencil type soldering iron with a 25 watt maximum capacity If only at operated iron is available use an isolating transformer 2 Solder tagged wires to proper terminals on magneto 4 3 Fasten magneto 4 to unit with four panhead screws 2 and four lockwashers 3 4 Pull RINGER button forward and engage slot in connecting link 1 in baron ringer button 5 Slide control unit chassis into case and secure with clamps 2 22 TM 11 5820 477 30 2 10 RF Filter Assembly A B and C Models Only This task covers Replacement INITIAL SETUP Tools Tool Kit Electronic Equipment TK 105 G Replacement figures 2 6 and 2 7 CAUTION Do not use a soldering gun Damaging voltages can be induced in the components Use a pencil type soldering iron with 25 watt maximum capacity Both control units are transistorized If only an at operated iron is available use an isolating transformer NOTE When removing soldered leads tag each lead for identification as it is unsoldered from its terminal to facilitate reconnection The specific components that comprise the RF filter assembly vary depending on the particular control unit local or remote and model The procedures described in this paragraph are typical for all units and models The C 2328A
39. LAY OFF BATTERY 6 6 TO 9 0 vDC NOTE POWER SUPPLY PART OF RFI FILTER ASSEMBLY 5201 INSTALLED LATER UNITS 5820 477 35 1 1 02 227 0285 1 E NL TM 11 5820 477 30 c Power Supply The chart below lists the circuits energized when TEL RAD RAD SPKR switch S202 is in the position indicated 5202 Position Circuit Energized TEL Audio amplifiers Q201 and Q202 RAD Audio amplifiers Q201 and Q202 oscillator Q204 and audio amplifier Q205 RAD SPKR Audio amplifiers Q201 and Q202 oscillator Q204 and audio amplifier Q205 Audio driver Q203 Power amplifier 0206 d Sidetone During telephone communication or transmission of voice signals through the radio set a sidetone signal developed in the H 138 U microphone is applied to the H 138 U earpiece 1 TEL position Voice signals developed in the H 138 U microphone are applied through audio line transformer T201 switch 5202 to the H 138 U earpiece 2 RAD or RAD SPKR position Voice signals developed in the H 138 U microphone are applied through audio line transformer T201 switch S202 filter FL201 VOLUME control R208 audio driver Q203 audio transformer T202 relay K201 deenergized and switch S202 to the H 138 U earpiece 1 1 3 Stage Analysis of Remote Control Unit C 2328 GRA 39 figures FO 1 through FO 4 NOTE The following discussion applies to all models of Control Radio Set C 2328 GRA 39 except where noted Refer to schematic diagrams FO
40. M in parentheses followed by the part number e Column 5 Unit of Measure U M Indicates the measure used in performing the actual maintenance function This measure is expressed by a two character alphabetical abbreviation e g ea in pr If the unit of measure differs from the unit of issue requisition the lowest unit of issue that will satisfy your requirements Section EXPENDABLE DURABLE SUPPLIES AND MATERIALS 3 4 National Stock Number Description 3439 00 922 4555 Solder SNEOWRMAP3 B 1 B 2 blank RECOMMENDED CHANGES TO EQUIPMENT TECHNICAL PUBLICATIONS WRONG wm THis FROM PRINT YOUR UNIT S COMPLETE ADDRESS Wn KO RETI Commander DOM HE Stateside Army Depot DOPE ABOUT IT ON THIS ATTN AMSTA US FORM CAREFULLY TEAR IT COP UR Stateside N J 07703 5007 IN THE DATE SENT 10 July 1975 PUBLICATION NUMBER PUBLICATION DATE PUBLICATION TITLE TM 11 5840 540 12 23 Jan 74 Radar Set AN PRC 76 IN THIS SPACE TELL WHAT IS WRONG PAGE PARA FIGURE TABLE AND WHAT SHOULD BE DONE ABOUT IT NO GRAPH NO NO 25 2 28 Recommend that the installation antenna alignment procedure be changed throughout to specify a 29 IFF antenna lag rather than 1 REASON Experience has shown that wiWy only a 1 lag the antenna servo system is too sensitive to wind gusting in excess of 25 knogs and has a tendency to rapidly accelerate and dec as i
41. MP CONTROL RELAY 1 SEALED UNIT 10 0206 AND 0207 SELECTED FOR BETA RATING BETWEEN SO AND 60 L AFP ECTS Ou T PUT DISTORTION 85 820 477 35 8 FO 2 Control Radio Set C 2328 GRA 39 Remote Control Unit Schematic Diagram FP 3 FP 4 blank TM 11 5820 477 30 HANDSET 1 9 oem s d Hd 6 i IMPTO T a DON NAE I 4204 HANDSET MIKE Tr e GRO K i wont NOTES 4 REFERENCE DESIGNATIONS ARE ABBREVIATED PREFIX THE DESIGNATION WITH UNIT NUMBER ASSEMBLY 0 55 82 5 OR BOTH 2 UNLESS OTHERWISE INDICATEO RESISTANCES ARE Se wg PACITANCES ARE IN TRANSISTORS 3 C INDICATES EQUIPMENT MARKING 4 RECEPTACLE VIEWED FROM RECEPTACLE END RE 5291 H 5 TRANSFORMER TERMINAL IMPEDANCES C Yu ww Lie ____ CALL LAMP 1 1500 1 2 18007 1 3 2682 CT L P 6 RELAY 3 5 3 4 1000 4 5 ar Te HA 5 6 BOOE 5 7 40002 9 SWITCH 5202 iS VIEWED FROM KNOB END FRONT OF WAFER IS SIDE TOWARD KNOB WAFER NEAREST CONTROL KNOB 14 SECTION Z SWITCH 5202 SHOWN IN POSITION TABLE OF CONTACTS MADE SWITCH SECTION SWITCH POSITION CONTACTS Six 30 BATTERIES CONNECTED FOR NOMINAL NINE 9 VATS eg
42. PPLY TM5820 477 35 5 0 2 217 0285 1 NL 91 1 20 8 6 VHD DEZEZ D PUE 6E VHO g62EZ O 6 62 2 2 SHUN jo3u02 16907 9 1 P O 5102 AUDIO FROM 5 7 EARPIECE RAD O SET P O HANDSET RECEIVER H 138 U 9 T L BUZZER 7 __ Buzzer VOLUME 05101 FILTER CALL LAMP CALL LAMP CONTROL NOTE TO BATTERY RELAY POWER SUPPLY sios X RINGER GIO RESONANT RELAY AMPLIFIER RELAY FROM REMOTE 9 AUDIO LINE ELTER 3 900 CPS EMITTER EMITTER ODIO SET CONTROL TRANSFORMER FLIO2 AMPLIFIER FOLLOWER FOLLOWER TRANSMITTER UNIT 0105 0104 003 PREAMPLIFIER Ma REMOTE MICROPHONE Prosioe AUDIO AUDIO REMOTE TER AUDIO TO P O HANDSET AMPLIFIER AMPLIFIER ATTENUATOR TRANS d RADIO SET H 138 U DIDI Q 02 io TRANSMITTER Rano SADIO RADIO NOTE PART OF FILTER ASSEMBLY INSTALLED N LATER UNITS TO CALL LAMP POWER CONTROL RELAY Ean BATTERY 293 POWER 6 6 TO 90 6 SUPPLY EN 813 TM5820 477 35 Ci 2 0 22 0c8S LL WL TM 11 5820 477 30 2 Receiving Signals from the radio set receiver are applied through switch S102 relay K101 filter FL101 and audio line transformer T101 to
43. Secure front panel 1 to chassis 3 by installing six panhead screws 4 Pull RINGER button 2 forward and engage connecting link to RINGER button bar 5 Slide chassis into case and secure with clamps 4859 011 Figure 2 10 Call Lamp Control Relay Replacement A B and C Models Typical TM 11 5820 477 30 2 13 Chassis Parts Replacement This task covers Replacement INITIAL SETUP Tools Tool Kit Electronic Equipment TK 105 G NOTE Procedures described in this paragraph are typical for local control unit all models and remote control unit all models Replacement figures 2 1 and 2 12 Most of the chassis components in the RA 39 are removed by unscrewing attaching hardware and or unsoldering wires The components are easily reached with the chassis removed from the case CAUTION Do not use a soldering gun damaging voltages can be induced in components Use a pencil type soldering iron with a 25 watt maximum capacity Both control units are transistorized If only at operated irons are available use an isolating transformer NOTE When removing soldered leads tag each lead as it is unsoldered from its terminal Release clamp on each side of control unit and slide chassis out of case 2 Unsolder wire s from component Remove attaching hardware if applicable and remove component from chassis Position replacement component on chassis Secured with attaching hardware if applicable
44. T202 by making resistance measurements of transformer paragraph 2 5 If defective replace paragraph 2 13 Step 9 Check for defective relay K201 by checking continuity of relay terminals 7 and 8 If defective replace paragraph 2 13 8 RADIO SET SIGNALS ARE NOT RECEIVED BY REMOTE CONTROL UNIT INTERNAL LOUDSPEAKER Step 1 Perform all tests inspections listed in malfunction 6 Step 2 Check for defective transformer T202 by making resistance measurements between terminals 5 6 and 7 of transformer paragraph 2 5 If defective replace paragraph 2 13 TM 11 5820 477 30 Table 2 3 Hemote Control Unit Troubleshooting cont Malfunction Test or Inspection Corrective Action 8 RADIO SET SIGNALS ARE NOT RECEIVED BY REMOTE CONTROL UNIT INTERNAL LOUDSPEAKER cont Step 3 Check for defective power amplifiers Q206 and Q207 by checking for presence of operating voltage at terminal 16 of component board A201 If defective replace 0206 and or Q207 paragraph 2 13 Step 4 Check for defective transformer T203 by checking resistance of transformer windings paragraph 2 5 If defective replace paragraph 2 13 Step 5 Check for defective loudspeaker by checking continuity of loudspeaker voice coil If defective replace loudspeaker 2 14 Step 6 Check for defective switch S202 by checking continuity of switch section B contacts 10 and 8 If defective replace 2 14 S
45. TECHNICAL MANUAL DIRECT SUPPORT MAINTENANCE MANUAL FOR CONTROL RADIO SET GROUPS AN GRA 39 NSN 5820 00 889 3860 AN GRA 39A NSN 5820 00 082 3998 AN GRA 39B NSN 5820 00 949 9909 AN GRA 39C NSN 5820 01 196 0204 TM 11 5820 477 30 INTROD ON PAGE 1 1 PRINCIPALS OF OPERATION PAGE 1 5 DIRECT SUPPORT TROUBLESHOOTIN OCEDUR PAGE 2 19 HEADQUARTERS DEPARTMENT OF THE ARMY 1 JULY 1991 Approved for public release distribution is unlimited DESTRUCTION NOTICE Destroy by any method that will prevent disclosure of contents or reconstruction of the document TM 11 5820 477 30 SAFETY SIEPS TO FOLLOW IF SOMEONE IS THE VICTIM OF ELECTRICAL 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 SAFETY USING A DRY WOODEN POLE OR A DRY ROPE OR SOME OTHER INSULATING MATERIAL SEND FOR HELP AS SOON AS POSSIBLE AFTER THE INJ URED PERSON IS FREE OF CONTACT WITH THE SOURCE OF ELECTRICAL SHOCK MOVE THE PERSON A SHORT DISTANCE AWAY AND IMMEDIATELY START ARTIFICIAL RESUSCITATION TM 11 5820 477 30 WARNING ELECTRICAL SHOCK HAZARD Do not press the RINGER button when touching the line binding posts TM 11 5820 477 30 TECHNICAL MANUAL HEADQUARTERS DEPARTMENT OF THE ARMY No 11 5820 477 30 Washington DC 1 July 1991 Direct Support Maintenance Manual for CONTROL RA
46. TEL FRONT REMOTE RADIO 9 L REMOTE RADIO TEL REMOTE Radio TEL REMOT RADIO GALL LAMP CONTROL RELAY S SEALED UNIT 8 WIZE INSTALLED PER MWO 1 5420 477 30 7 LS820 amp 77 C5 Tu FO 6 Control Radio Set C 2329A GRA 39 Local Control Unit Schematic Diagram FP 11 FP 12 blank HANDSET CONNECTOR HANDSET MIKE 1 I 1 l 1 IH TO TALK ET Ke H 006 RADIO SET CONNECTOR MANDSET PHONE d 1 1 HANDSET wie o FUB TO TALW SWITCH t aol A ere C een IK BA 30 BATTERIES CONNECTED NOMINAL NINE SI VOLTS a 8 so 562 SECT I 1 I 1 I I TM 11 5820 477 30 NOTES REFERENCE DESIGNATIONS ARE AGEREVIATED PREFIX TRE D SIGNATION WITH UNIT NUMBER OR ASSEMBLY OF BOTH 2 UNLESS OTHERWISE INDICATED RESISTANCES ARE CAPACITANCE ARE IN UP TANSUETORS a UH mocares EQUIPMENT MARKING 4 RECEPTACLE VIEWED FROM PIN CR AECEPTACLE END I04 4 SWITCH 302 VIEWED FROM KNOW END FRONT OF WAFER SIDE TOWARD CONTROL KNOB WAFER NEAREST CONTROL KNOB S SECTION SWITCH 8102 SHOWN IN POSITION TABLE OF CONTACTS E awcfenseetion awitex per Geen
47. TS MADE WITH HANDSET PUSHBUTTON DEPRESSED UNLESS NOTED WITH ASTERISK 5 ALL MEASUREMENTS MADE CHASSIS GROUND COMPONENT BOARO 2 VOLTAGE MEASUREMENTS 9 3 2 O 4 mos Es aios 0 229 028S LL NL TM 11 5820 477 30 4859 004 2 Figure 2 3 Local Control Unit C 2329 GRA 39 Component Location and Voltages Sheet 2 of 2 TM 11 5820 477 30 NOTE The information table 2 4 applies to all models of the local control unit 6 noted Table 2 4 Troubleshooting Local Control Unit Malfunction Test or Inspection Corrective Action 1 NO RINGER SIGNAL OUTPUT Step 1 Check magneto 3101 for output voltage If output is inadequate replace magneto paragraph 2 9 Step 2 Check capacitor C112 If defective replace paragraph 2 13 Step 3 Check audio line transformer T101 by checking winding resistance between terminals 5 and 6 of transformer paragraph 2 5 If defective replace 2 13 Step 4 Check for proper mechanical functioning and continuity of microswitch 5103 If defective replace paragraph 2 13 2 BUZZER 15 ACTIVATED WHEN RINGER BUTTON ON REMOTE CONTROL UNIT Step 1 Check capacitor C112 If defective replace paragraph 2 13 Step 2 Check for proper mechanical functioning and continuity of microswitch S103 If defective replace paragraph 2 13
48. bly DS101 is located on local control unit Buzzer assembly DS201 is located on remote control unit Removal installation and adjustment procedures are the same for both a Removal figure 2 8 CAUTION Do not use a soldering gun damaging voltages can be induced in the components Use a pencil type soldering iron with 25 watt maximum capacity Both control units are transistorized If only at operated iron is available use an isolating transformer NOTE When removing soldered leads tag each lead as it is unsoldered from its terminal to facilitate reconnection 1 Release clamp on each side of control unit and slide chassis out of case 2 Tag and unsolder three wires connected to buzzer assembly 1 3 Remove four flathead screws 2 securing cover assembly 3 to front panel Remove cover assembly 4 Using spanner wrench unscrew ring nut 4 which secures buzzer assembly 1 to front panel b Remove O ring retainer 5 O ring 6 diaphragm assembly 7 and spacer ring 8 and remove buzzer assembly 1 b Installation figure 2 8 1 Insert buzzer assembly 1 into front panel opening 2 Install spacer ring 8 diaphragm 7 O ring 6 O ring retainer 5 and ring nut 4 on buzzer unit 1 3 Tighten ring nut 4 using spanner wrench TM 11 5820 477 30 4 Position cover assembly 3 on front panel over ring nut 4 and secure with four flathead screws 2 CAUTION Do not use a soldering gun damagi
49. come up first in search engines They did not create it They did not even scan it Why should they get your money Why are not letting you give those free manuals to your friends I am setting this document FREE This document was made by the US Government and is NOT protected by Copyright Feel free to share republish sell and so on I am not asking you for donations fees or handouts If you can please provide a link to liberatedmanuals com so that free manuals come up first in search engines A HREF http www liberatedmanuals com gt Free Military and Government Manuals lt A gt Sincerely Igor Chudov http igor chudov com
50. crophone output 1 The voice and 3 900 Hz signals present at the LINE binding posts are coupled through the secondary of T101 terminals 3 and 4 to filter FL101 terminal 2 Filter FL101 is a parallel tuned filter which attenuates the 3 900 Hz signal When relay K101 has been energized the voice and attenuated 3 900 Hz signals at the output of FL101 terminal 1 are applied through K101 terminals 4 and 2 to the attenuator 2 Output signals of the attenuator terminal 7 are applied through switch S102 section B rear contacts 2 and 4 to the primary terminals 1 and 2 of transformer T102 Transformer T102 provides ground isolation between the local control unit and the radio set Signals induced in the secondary winding terminals 3 and 4 of transformer T102 are applied through filter FL104 terminals 2 and 1 and connector P101 pin D to the radio set Filter FL104 further attenuates the 3 900 Hz signal d Ringing Circuits Magneto G101 buzzer DS101 microswitch S103 and the call lamp circuit are functionally the same as their respective components in the remote control unit Refer to para 1 13e for explanation of these components in the remote control unit TM 11 5820 477 30 1 17 Battery Voltage Distribution Local Control Unit C 2329 GRA 39 figures FO 5 through FO 8 NOTE The following discussion applies to all models of Control Radio Set C 2329 GRA 39 except where noted In the A B and C models the call
51. ctive replace paragraph 2 13 Step 2 Check for defective switch S202 by checking continuity of switch section A contacts 4 1 9 12 If defective replace paragraph 2 14 TM 11 5820 477 30 Table 2 3 Troubleshooting Remote Control Unit cont Malfunction Test or Inspection Corrective Action 7 RADIO SET SIGNALS ARE NOT RECEIVED BY REMOTE CONTROL UNIT HANDSET EARPIECE Step 1 Check for defective audio line transformer T201 by checking resistance of all transformer windings paragraph 2 5 If defective replace transformer T201 paragraph 2 13 Step 2 Check for defective capacitor C214 If defective replace paragraph 2 13 Step 3 Check for defective switch S202 by checking continuity of switch section A contacts 4 2 3 and 12 10 11 defective replace paragraph 2 14 Step 4 Check for defective filter FL201 by checking resistance of filter paragraph 2 5 If defective replace paragraph 2 13 Step 5 Check for defective VOLUME control potentiometer to determine if it is open If defective replace paragraph 2 14 Step 6 Check for defective connector P201 or J204 by checking continuity between connectors pins B D F E Replace defective connector paragraph 2 13 Step 7 Check for defective audio driver Q203 by checking for presence of operating voltage at terminals 6 and 4 of component board A202 If defective replace paragraph 2 13 Step 8 Check for defective transformer
52. d or Q102 paragraph 2 13 Step 2 Check connectors P102 and J104 for continuity pins A C H J Replace defective connector s paragraph 2 13 Step 3 Check for defective switch S102 Check continuity of switch section A front contacts 3 and 11 section B front contacts 8 and 5 If defective replace paragraph 2 14 Step 4 Check audio line transformer T101 by checking winding resistance between terminals 1 and 2 of transformer paragraph 2 5 If defective replace paragraph 2 13 Step 5 Check for defective AUDIO connector J101 by checking continuity of connector pins A C D If defective replace paragraph 2 14 6 TELEPHONE COMMUNICATIONS ARE SENT OUT BUT NOT RECEIVED BY LOCAL CONTROL UNIT Step 1 Check audio line transformer T101 by checking winding resistance between terminals 3 and 4 of transformer paragraph 2 5 If defective replace 2 13 TM 11 5820 477 30 Table 2 4 Troubleshooting Local Control Unit cent Malfunction Test or Inspection Corrective Action 6 TELEPHONE COMMUNICATIONS ARE SENT OUT BUT NOT RECEIVED BY LOCAL CONTROL UNIT cent Step 2 Check for defective switch 5102 by checking continuity of switch section A rear contacts 4 and 1 If defective replace paragraph 2 14 7 RADIO SET TRANSMITTER IS NOT ENERGIZED BY LOCAL CONTROL UNIT Step 1 Check for defective relay K101 by checking for presence of battery voltage at contact 1 a If battery volta
53. e 4 4 Install two flathead screws 1 4859 017 Figure 2 16 Clamping Catch Replacement 2 42 TM 11 5820 477 30 2 17 Error in Applying MWO 11 5820 477 30 1 a Instructions in MWO 11 5820 477 30 1 Modification of Radio Set Control Groups AN GRA 39 and AN G RA 39A to Improve Communications When Used With Radio Set AN PRC 25 in Squelch Mode 11 April 1967 which was rescinded by DA Cir 310 25 6 Oct 71 assumed a wiring condition on TEL REMOTE RADIO switch 5102 of the C 2329 GRA 39 and C 2329A GRA 39 that did not exist on all units After performing the MWO on some units the operator could not communicate with the other control unit when switch S102 was in TEL position b There is a jumper between terminals 4 and 9 of S102A rear in some units and not in others A blue white wire is connected between terminal B of AUDIO receptacle J101 and terminal 4 of 5102 A in some units and to terminal 9 of S102A rear in other units The MWO removed the jumper wire and connected a 560 ohm resistor RI 23 between terminal B of J101 and terminal 9 of S102A rear In units where the blue white wire ran to terminal 4 of S102A the equipment performed correctly in units where the wire ran to terminal 9 of 1024 telephone communication between operators of control units could not occur To determine whether units C 2329 GRA 39 and C 2329A GRA 39 were modified correctly make either of the following tests 1 Set the control switch to
54. e 3 900 Hz amplifier Q105 is selectively tuned by filter FL103 Filter FL103 peaks the 3 900 Hz signal 3 Emitter follower Q104 is directly coupled to emitter follower Q103 The base of Q103 is biased at the battery voltage through the low dc resistance of filter FL103 Battery voltage is applied to the emitter of Q104 through emitter swamping resistor R120 Capacitor 09 integrates the output present at the emitter of Q103 and applies this dc voltage to pin E of J104 The dc voltage present at pin E of P102 is applied through switch S102 section A rear contacts 6 and 8 to terminal 5 of relay K101 4 Battery voltage is applied to relay K101 terminal 1 through switch 5102 section B rear contacts 12 and 10 With a 3 900 Hz signal present at the LINE binding posts the negative going dc output of the resonant relay amplifier tends to cause the voltage on terminal 5 of relay K101 to approach zero The difference in potential on the coil of K101 causes it to energize When K101 energizes ground is applied throughK101 contacts 8 and 6 and P101 pin C to a circuit in the radio set which keys the transmitter 5 Operating voltage for the resonant relay amplifier is applied through pins D and F of P102 and J104 c Attenuator The attenuator is a pad consisting of three L sections Resistors R114 through R119 make up the attenuator and provide approximately 50 dB attenuation of the signal which reduces it to the approximate level of a mi
55. ected through pin H on J204 and P201 to the primary terminals 1 and 2 of audio line transformer T201 Terminal 2 of T201 is grounded through CR201 and the push to talk switch of the handset The induced voltage into the secondary of T201 terminals 5 and 6 is applied to LINE binding posts J202 and J203 Battery voltage is applied to the preamplifier through pin J of J204 b Tone Generator Q204 and Q205 The tone generator consists of oscillator Q204 and audio amplifier Q205 Oscillator Q204 a modified shunt fed Hartley oscillator produces the 3 900 Hz signal tone which activates circuits in the local control unit to key the transmitter portion of the radio set Audio amplifier Q205 amplifies the 3 900 Hz output oscillator of Q204 1 Oscillator Q204 Oscillator circuit Q204 begins generating noise when battery voltage is applied Tuned tank circuit filter FL202 allows only the frequency to which it is tuned 3 900 Hz to pass to the transistor base Capacitor C212 couples the 3 900 Hz output to the base of audio amplifier Q205 a Capacitor C211 is the coupling capacitor for the feedback loop Resistor R219 reduces the amplitude of the feedback signal Resistors R217 and R218 form a voltage divider t hat establishes the forward and reverse bias levels Capacitor C210 bypasses resistor R218 Resistor R220 is the emitter swamping resistor b When the handset push to talk switch is pressed battery voltage is applied through terminal 4 of co
56. er T201 to the LINE binding posts Oscillator Q204 produces a 3 900 hertz Hz signal tone which is applied to audio amplifier Q205 Output signals of Q205 are coupled by T201 to the LINE binding posts The voice signals and the 3 900 Hz signal are transmitted over the field wire to the local control unit The 3 900 Hz signal tone activates circuits in the local control unit which keys the transmitter portion of the radio set 2 Receiving Audio signals from the radio set receiver are returned to the remote control unit through the local control unit and field wire a Audio signals appearing at the LINE binding posts are coupled by audio line transformer T201 switch S202 RAD position filter FL201 VOLUME control R208 to audio driver Q203 Output signals of audio driver Q203 are coupled by audio transformer T202 through relay K201 deenergized and switch S202 to the handset earpiece b When the TEL RAD RAD SPKR switch is set to RAD SPKR battery voltage is applied to power amplifiers Q206 and Q207 The audio signals are coupled from audio driver Q203 to power amplifiers Q206 and Q207 by audio transformer T202 The output of power amplifiers Q206 and Q207 is coupled to loudspeaker LS201 by audio transformer T203 1 6 9019 6e vHEVezez 2 HUN j03u02 1 anbi PREAMPLIFIER I AUDIO AMPLIFIER Q20t AUDIO AMPLIFIER Q202 TO ANO FROM LOCAL CONTROL UNIT MICROPHONE
57. et C 2329C GRA 39 Local Control Unit Schematic Diagram FO 8 FP 15 FP 17 blank TM 11 5820 477 30 PHONE ELEMENT HANDSET PLUG 2201 A201 Kee __ 179 PREAMPLIFIER PUSH TO TALK RELEASE TO LISTEN NOTES REFERENCE DESIGNATIONS ARE ABBREVIATED PREHX THE DESIGNATION WITH UNIT NUMBER DR ASSEMBLY 3 9KHZ DESIGNATION DR BOTH GENERATOR UNLESS OTHERWISE INDICATED RESISTANCES ARE IN OHMS NOICATES EQUIPMENT MARKING CONNECTORS ARE VIEWED FROM THE PIN END p HANOSET AUOD PWE amp SWITCHES ARE VIEWED FROM KNOB END amp SWITCH 5202 SHOWN WEI SWITCH 6 0110 SWITCH POSITION TEL RAD A057 82028 114 210 122 10 46 EXE 2 SWITCH 520 IS SHOWN IN THE POSITION E SU 30 BATTERIES CONNECTED IN SERIES FOR NOMINA t VOLTS VC MICROPHONE ELEMENT Set Ze gt S ALL CALL CONTROL TO 18 201 1203 AUDID DRIVER AMPLIFIER 9 ES TB 201 LOUD SPEAKER 20 SEE NOTE 8 X VOLUME Le Y Ken ee ve r 1 1 I I i Q 15 FO 9 Control Radio Set C 2328 GRA 39 Remote Control Unit Functional Block Diagram FP 17 FP 18 blank PHONE nea num T
58. f applicable 5 Solder tagged wire s to proper component terminal s 6 Slide control unit into case and secure with clamps 2 37 TM 11 5820 477 30 ROTARY FEEDTHRU SWITCH RESISTOR TERMINAL LAMP LOUDSPEAKER See OTE HOUSING SEE NOTE RINGER LOUDSPEAKER BINDING CALL CONNECTOR BUZZER POST LAMP ASSEMBLY SEE NOTE NOTE A B AND C MODELS ONLY 4859414 Figure 2 13 Remote Control Unit Panel Assembly Component Replacement 2 38 TM 11 5820 477 30 ROTARY ROTAR SWITCH SWITCH KNOB x HOUSING NOTE SEE NOTE RINGER BUTTON BINDING CALL CONNECTOR BUZZER POST LAMP ASSEMBLY See OTE NOTE A B AND C MODELS ONLY 4859415 Figure 2 14 Local Control Unit Panel Assembly Component Replacement 2 39 TM 11 5820 477 30 2 15 Retractable Battery Cable This task covers a Removal b Installation INITIAL SETUP Tools Tool Kit Electronic Equipment TK 105 G NOTE Procedures described in this paragraph are typical for local control unit all models and remote control unit all models a Hemoval figure 2 15 1 Release clamps on each side of control unit and slide chassis out of case 2 Remove batteries from battery box 3 Remove three roundhead screws and three lockwashers 2 and remove battery cable 3 from terminal board 4 CAUTION Do not use a soldering gun damaging voltages can be induced in the components Use a pencil type soldering iron with a
59. ge is present set TEL REMOTE RADIO switch to RADIO b Press handset push to talk switch and check for continuity between pin C of RADIO connector P101 and ground Step 2 Check for defective switch 5102 by checking continuity of switch section A rear contacts 6 and 8 and section B rear contacts 10 and 12 If defective replace paragraph 2 14 Step 3 Check for defective RADIO connector P101 by checking continuity of all pins If defective replace paragraph 2 14 8 RADIO SET TRANSMITTER IS NOT ENERGIZED BY REMOTE CONTROL UNIT Step 1 Check for defective relay K101 using procedure in malfunction 7 step 1 If defective replace Step 2 Check for defective resonant relay amplifier by checking for presence of operating voltage at terminals 3 4 and 5 of component board A102 If defective replace amplifier paragraph 2 13 Step 3 Check for defective connectors P102 and J104 by checking continuity of connectors pins A D E or F Replace defective connector s paragraph 2 13 9 RADIO SET TRANSMITTER IS ENERGIZED BY LOCAL CONTROL UNIT BUT SIGNALS ARE NOT TRANSMITTED Step 1 Check for defective filter FL101 by hecking resistance of filte If defective replace paragraph 2 13 Step 2 Check for defective switch 5102 by checking continuity of switch 5102 section front contacts 11 and 5 and section B rear contacts 3 and 4 If defective replace paragraph 2 14 TM 11 5820 477 30 Table 2 4 Tro
60. h 5201 by checking for battery voltage at terminal 11 of component board A201 when switch S201 is in ON position If defective replace switch paragraph 2 13 Step 2 Check for defective capacitor C215 If defective replace paragraph 2 13 Step 3 Check switch S202 for continuity of switch contacts for each position If defective replace paragraph 2 14 5 TELEPHONE COMMUNICATION SIGNALS ARE RECEIVED BUT CANNOT BE TRANSMITTED TO LOCAL CONTROL UNIT Step 1 Check for defective preamplifier audio amplifier Q201 and Q202 by checking for signal voltage at terminal 2 of component board A202 If defective replace Q201 and or 0202 paragraph 2 13 Step 2 Check connectors P201 and J204 for continuity pins A C H J Replace defective connector s paragraph 2 1 3 Step 3 Check for defective switch S202 Check continuity of switch contacts 7 and 10 If defective replace paragraph 2 14 Step 4 Check audio line transformer T201 by checking winding resistance between terminals 1 and 2 of transformer paragraph 2 5 If defective replace paragraph 2 13 Step 5 Check for defective AUDIO connector J201 by checking continuity of connector all pins If defective replace 2 14 6 TELEPHONE COMMUNICATIONS ARE SENT OUT BUT NOT RECEIVED BY REMOTE CONTROL UNIT Step 1 Check audio line transformer T201 by checking winding resistance between terminals 3 and 4 of transformer paragraph 2 5 defe
61. he RINGER button is pressed and released rapidly several times This action activates magneto G201 to generate a ringing signal When the RINGER button is pressed switch 5203 which normally connects buzzer 05201 and a call lamp circuit in models A B and C to audio line transformer T201 is actuated to connect the magneto to T201 The ringing signal is coupled through T201 through the line to the local site Incoming ringing signals are coupled through T201 to activate buzzer DS201 In A B and C models incoming ringing signals are also applied to the call lamp control relay to activate the call lamp visual signal For operation of 05201 TEL RAD RAD SPKR switch S202 may be in any position However it must be set at TEL for the operator at the remote site to hear the local operator s voice 2 Telephone communication Transmitted voice signals generated in the microphone of Handset H 138 U are amplified by audio amplifiers Q201 and Q202 in the preamplifier and are coupled through T201 through the line to the local site Incoming voice signals from the local site are coupled by T201 to the H 138 U earpiece through S202 b Operation of Radio Set From Remote Control Unit 1 Transmitting For this type of operation the TEL RAD RAD SPKR switch is in either the RAD or RAD SPKR position Voice signals developed in the handset microphone are applied to audio amplifiers Q201 and Q202 The amplified output signals are coupled by audio line transform
62. in the system The local and remote control units are battery powered The two units have identical battery requirements Each control unit has a waterproof case and each has two D rings for attachment of a sling which allows the unit to be carried or hung on an appropriate object All operating controls on each unit are located in the front panel Identification of the components of each radio set control group covered by this manual can be found in TM 11 5820 477 12 1 8 Description of Major components Item Description 1 Local Control Unit Has a control cable for direct connection to a receiver transmitter and a 5 pin AUDIO connector for attachment of a handset when required Two LINE binding posts on front panel permit connection to remote control unit for radio operation or to remote and switchboard for NRI operation A B and C models have a call lamp to signal incoming calls and filtering capability 2 Remote Control Unit Has a 5 pin AUDIO connector for attachment of a handset radio operation or connector for jumper wires to switchboard NRI operation A built in loudspeaker allows operator to monitor calls in progress Two LINE binding posts on front panel permit connection to local control unit for radio operation or to local and switchboard for NRI operation A B and C models have a call lamp to signal incoming calls and filtering capability 3 Handset Allows operator to communicate with other parties i
63. included in that chapter A more specific subject index is located at the beginning of each section to help you find the exact paragraph you are looking for TM 11 5820 477 30 4859 019 Figure 1 1 Radio Set Control Group AN GRA 39 Typical Section Section Il Section Ill OVERVIEW TM 11 5820 477 30 CHAPTER 1 INTRODUCTION Page General a stands cae asa eed ee ede uqa Equipment Description and 1 2 Principles of Operation eere CIR 1 5 The general information description and principles of operation contained in this chapter provide data for direct support personnel to use and maintain Radio Set Control Groups AN GRA 39 AN GRA 39A AN GRA 39B and AN GRA 39C This chapter lists reporting procedures equipment improvement recommendations and storage procedures Equipment description and data include particular model differences Principles of operation explains functioning of each model Section L GENERAL INFORMATION Para Page SCOPE Ehe 1 1 Consolidated Index of Army Publications and Blank 5 1 1 Maintenance Forms Records and 1 2 Reporting Equipment Improvement Recommendations EIR 1 2 Administrative Storage 12 Destruction of Army Electronics
64. insulation from each wire splice the two wires together solder them and insulate the splice with electrical tape C figure 2 1 8 Connect the 560 ohm resistor NSN 5905 00 682 4109 between terminal B of J101 and terminal 9 of the switch 2 43 TM 11 5820 477 30 JUMPER NOT IN SOME UNITS TO 4 IN SOME UNITS BLACK WHITE TO 9 OTHER UNITS 2 wiRES SIO2A REAR WIRING BEFORE MODIFICATION JUMPERS 2 WIRES RESISTOR 60 OHMS B 51024 REAR WIRING AFTER MODIFICATION WHEN BLUE WHITE WIRE IS CONNECTED TO TERMINAL 4 JUMPERS BLACK WHITE RESISTOR 560 OHMS 2 WIRES C SIO2A REAR WIRING AFTER MODIFICATION WHEN BLUE conn 433 are Figure 2 17 TEL REMOTE RADIO Switch S102A of C 2329 GRA 39 and C 2329A GRA 39 Wiring Diagram 2 44 TM 11 5820 477 30 3 If the blue white wire is missing and the jumper wire has been removed remove switch 102 to gain access to terminal 4 on the same wafer as terminal 9 B figure 2 18 Connect a blue white wire between B of J101 and terminal 4 of S102A rear Connect the 560 ohm resistor between terminal B of J101 and terminal 9 of the switch 2 46 2 46 blank TM 11 5820 477 30 APPENDIX A REFERENCES A 1 Scope This appendix lists all forms field manuals technical manuals and miscellaneous publications referenced in this manual A 2 Forms Consolidated Index of Army Publications and Blank Forms
65. intenance 5 2 19 REFERENCES ox EXPENDABLE DURABLE SUPPLIES AND MATERIALS This manual supersedes TM 11 5820 477 35 9 January 1963 including all changes TM 11 5820 477 30 Number Figure ER e orolololeloelioloo tlc lalalo EI fie nol LIST OF ILLUSTRATIONS Title Page Radio Set Control Group 39 sees hen Major s Remote Control Unit C 2328 GRA 39 Block Diagram Remote Control Units C 2328A GRA 39 C 2328B GRA 39 and C 2328C GRA 39 with Call Lamp Block Diagram 1 8 Local Control Unit C 2329 GRA 39 Block Diagram Local Control Units C 2329A GRA 39 C 2329B GRA 39 and C 2329C GRA 39 with Call Lamp Block 1 15 Component Remote Control Unit C2328 GRA 39 Component Location and Voltages 2 6 Local Control Unit C 2329 GRA 39 Component Location and Vottages 2 13 Magneto G201 Remote Control Unit 2 21 Magneto 6101 Local Control Unit Replacement
66. is The voltage measurements given in tables 2 1 and 2 2 provide the data needed to check operating voltages of specific major circuits The troubleshooting tables are designed to supplement the operational checks detailed in the equipment performance checklist in TM 11 5820 477 12 If previous operational checks have resulted in reference to particular item on the troubleshooting table go directly to the referenced item This section has two troubleshooting tables Table 2 3 pertains to the remote control unit Table 2 4 pertains to the local control unit Each table lists the common malfunctions that may occur during operation and maintenance of the AN GRA 39 and after unit maintenance has been performed Each malfunction is followed by a list of tests or inspections and corrective actions These test or inspections and corrective actions should be performed in the order listed This manual cannot list all malfunctions that may occur If you encounter a problem that is not listed or cannot be corrected by the listed corrective action notify your supervisor Refer to the Maintenance Allocation Chart in the operators and unit maintenance manual TM 11 5820 477 12 for a list of equipment required for direct support troubleshooting WARNING Do not press RINGER button of either the local or the remote unit when touching line binding posts Electrical shock may result CALITION When a corrective action entails component replacement refe
67. lamp circuit is connected directly to the battery supply side of switch S101 Refer to FO 6 FO 7 and FO 8 respectively The distribution of the battery voltage depends on the position of the TEL REMOTE RADIO switch The application for each function is traced in the following paragraphs a through c POWER switch 5101 is considered to be at ON throughout this discussion NOTE The application of the battery voltage is traced to a pin of connector P102 The application from these pins is discussed paragraph 1 16 a REMOTE Position With the TEL REMOTE RADIO switch in REMOTE position battery voltage is applied through switch S102 section B rear contacts 12 and 10 to terminal 1 of relay K101 Battery voltage is also applied to the resonant relay amplifier through contacts 8 and 6 of S102 section B rear to P102 pin F and through filter FL103 to P102 pin D b TEL Position With the TEL REMOTE RADIO switch in TEL position battery voltage is applied to the preamplifier through switch S102 section B rear contacts 8 and 5 to PI 02 pin J c RADIO Position With the TEL REMOTE RADIO switch in RADIO position battery voltage is applied through switch S102 section B rear contacts 12 and 11 to terminal 1 of relay K101 TM 11 5820 477 30 CHAPTER 2 DIRECT SUPPORT MAINTENANCE Page Section Repair Parts Special Tools TMDE and Support Equipment 2 1 Section Direct Support
68. ls Ohms 80 10 60 10 70 10 125 2096 100 20 75 20 82 20 50 20 5 25 6 25 0 9 25 2 75 10 2 75 10 480 10 2 3 TM 11 5820 477 30 P201 J104 OR OR P102 J204 s 5 nl f s 00 T C Os 6 po CAPTIVE SCREW 4859 02 Figure 2 1 Component Checks TM 11 5820 477 30 Table 2 2 Local Control Unit DC Resistance Transformer or Coil Terminals Ohms 80 10 60 10 70 10 25 10 56 10 500 25 2 75 10 2 75 10 2 75 10 480 10 2 6 Remote Control Unit Troubleshooting Table 2 3 lists troubleshooting procedure for remote control unit C 2328 GRA 39 Refer tb figure 2 4 for the locations of components identified in table 2 3 CAUTION This equipment is transistorized Observe all cautions given to prevent transistor damage NOTE The information in table 2 3 applies to all models of the remote control unit except where noted 9 610 19245 pue jueuoduo 62 9222 2 HUN 104000 72 2 anbi COMPONENT BOARD A20 VOLTAGE MEASUREMENTS TERMINAL NO TEL RAD RAD SPKR R219 c2i3 R224 2 C2 R222 P20 J204 FL202 1205 T202 C212 R226 R218 6201 HIDDEN 203 HIDDEN Q206 05201 9 1 65 16 5 E203 LS 201 R208 S201 5202 CR201 4203 4202 CR202 14 13 202 206
69. mponent board A201 The TEL RAD RAD SPKR switch must be in RAD or RAD SPKR position 2 Audio amplifier Q205 Audio amplifier Q205 provides the output of the oscillator with a gain of approximately 35 dB All parts of audio amplifier Q205 except R226 are functionally the same as their respective parts in audio amplifier 0202 1 13 2 Resistors R226 and R221 forma signal voltage divider to reduce signal amplitude at the base of Q205 The 3 900 Hz output signal is connected to the primary terminals 1 and 2 of T201 through terminal 1 of component board A201 The 3 900 Hz tone and audio signals are coupled to the secondary of T201 terminals 5 and 6 to the LINE binding posts Battery voltage is applied through terminal 3 of component board A201 c Audio Driver Q203 Audio driver Q203 amplifies the signals from the receiver section of the associated radio set by approximately 25 dB 1 Signals present at pin B of J204 are coupled by capacitor C208 to the base of audio driver Q203 Resistors R209 R210 and R213 establish the bias voltage for Q203 Capacitor C207 and resistor R209 provide alternating current ac decoupling for the battery voltage Resistor R211 is the emitter swapping resistor bypassed by capacitor C209 Resistor R212 provides degenerative feedback 2 Output signals of audio driver Q203 are applied through pin E of J204 and P201 to terminals 1 and 2 of transformer T202 Battery voltage is applied to Q203 through pi
70. n the RINGER button is pressed microswitch 5203 disconnects buzzer DS201 and in A B and C models the visual signal call lamp circuit and places magneto G201 on the line Continued travel of the RINGER button shaft cranks the magneto to produce the 20 Hz voltage which causes a response in the local unit buzzer and in A B and C models the call lamp The BUZZER VOLUME control mechanically controls the loudness of the buzzer NOTE In the later A B and C models a radio frequency RF filter assembly is connected in series with terminals of switch S203 1 14 Battery Voltage Distribution Remote Control Unit C 2328 GRA 39 figures FO 1 through FO 4 The distribution of battery voltage depends on the position of the TEL RAD RAD SPKR switch The application for each function is traced in the following paragraphs a through d OFF ON switch 5201 is considered to be at ON throughout this discussion NOTE The following discussion applies to all models of Control Radio Set C 2328 GRA 39 except where noted The application of the battery voltage is traced to a terminal of component board A201 or a pin of connector P201 The application from these points is covered in paragraph 1 13 a RAD Position With the TEL RAD RAD SPKR switch in RAD position battery voltage is applied to audio driver Q203 during receive operation and to the preamplifier 2201 Q202 and the tone generator Q204 Q205 during transmit operation 1
71. n the system TM 11 5820 477 30 4859 001 Figure 1 2 Major Components TM 11 5820 477 30 1 9 Differences Between Models Local control units C 2329A GRA 39 C 2329B GRA 39 and C 2329C GRA 39 and remote control units C 2328A GRA 39 C 2328B GRA 39 and C 2328C GRA 39 each have call lamp on the front panel with an associated control relay inside the housing and radio frequency interference filtering capability The C 2328A GRA 39 and C 2329A GRA 39 comprising AN GRA 39A and the C 2328C GRA 39 and C 2329C GRA 39 comprising AN GRA 39C each have a sealed RFI filter assembly consisting of capacitors and inductors The C 2328B GRA 39 and C 2329B GRA 39 comprising AN GRA 39B each have a sealed filter assembly consisting of capacitors and resistors The basic model AN GRA 39 has no call lamp or filtering b The basic and A models have identical wiring The B model component boards 02 and A201 have different printed wiring layout resulting in different wire routing from P102 and P201 to the circuit boards The C model is identical to the B model c The basic and A models have been modified to add a 560 ohm resistor R123 to improve monitoring when Radio Set AN PRC 25 is operated in the SQUELCH mode This resistor was already a component of the B and C models 1 10 Equipment Data Refer to TM 11 5820 477 12 jor a description of the equipment and a listing of additional equipment required
72. ng voltages can be induced in the components Use a pencil type soldering iron with a 25 watt maximum capacity If only at operated iron is available use an isolating transformer 5 Solder tagged wires to proper terminals buzzer assembly 1 6 Slide chassis into case and secure with clamps Figure 2 8 Buzzer Assembly 05101 or DS201 Replacement TM 11 5820 477 30 2 11 Buzzer Assembly DS101 or DS201 cont c Adjustment NOTE Two persons are required for buzzer assembly adjustment 1 Release clamp on each side of control unit and slide chassis out of case Set BUZZER VOLUME control 1 to midrange position 3 Connect control unit to another control unit using field wire 4 Press RINGER button on second control unit 5 Insert screwdriver into BUZZER ADJUSTMENT hole on rear of chassis 6 Adjust buzzer adjustment screw 2 until buzzer can be heard at a distance of 15 feet 7 Set BUZZER VOLUME control 1 to OFF 8 Press RINGER button on second control unit No sound should be heard from buzzer assembly 9 Slide chassis into case and secure with clamps 4859 010 Figure 2 9 Buzzer Adjustment DS101 or 05201 TM 11 5820 477 30 2 12 Call Lamp Control Relay A B and C Models Only This task covers a Removal b Installation INITIAL SETUP Tools Tool Kit Electronic Equipment TK 105 G NOTE Both local control unit and remote control unit are equipped with call lamps Replacement procedures
73. ns F and D of P201 which mate with pins F and D of J204 1 10 TM 11 5820 477 30 d Power Amplifiers Q206 and Q207 Power amplifiers Q206 and Q207 are a push pull amplifiers which provide sufficient power gain to drive loudspeaker LS201 The amplifiers operate only when the TEL RAD RAD SPKR switch is in RAD SPKR position When the TEL RAD RAD SPKR switch is in either the TEL or RAD position battery voltage is removed from terminal 16 of component board A202 and a short circuit is placed across the voice coil of loudspeaker LS201 1 Output signals of audio driver Q203 para 1 13cl 1 are devebped across the primary terminals 1 and 2 of T202 and are induced into the secondary of T202 terminals 5 6 and 7 The output of Q206 is applied across one half the primary of transformer T203 terminals 1 and 2 The output of Q207 is applied across the other half of the primary of T203 terminals 3 and 2 Output signals devebped across the full primary of T203 terminals 1 and 3 are induced into its secondary terminals 4 and 5 driving loudspeaker LS201 2 Battery voltage is applied to Q206 and 0207 through emitter swamping resistors R215 and R216 Diode CR202 and resistor R214 forma voltage divider which supplies small forward bias Diode CR202 also provides improved temperature stabilization e Ringing Circuits Buzzer 05201 is normally in the circuit to reproduce the 20 Hz voltage generated by the magneto in the local control unit Whe
74. r to the applicable maintenance paragraph paying particular attention to all pertinent cautions and notes before attempting replacement TM 11 5820 477 30 2 4 preliminary Procedures figure 2 1 Before troubleshooting can be performed the control unit must be installed in a bench test setup Refer to the operator s and unit maintenance manual TM 11 5820 477 12 tor bench test setup data For component checks perform the following Release the two front clamps and slide the remote or local control unit chassis out of its case b Loosen four captive screws and remove component board A202 remote control unit or 02 local control unit from chassis c Place on bench without disconnecting connector P201 from J204 remote control unit or P102 from J104 local control unit cf Upon completion of tests replace component board and secure with four captive screws e Slide chassis into its case close the two front clamps 2 5 Dc Resistance of Transformers and Coils Dc resistance readings are made with components disconnected Determine resistance between terminals as indicated in tables 2 1 and 2 2 CAUTION Do not make any resistance measurements on control units except as specified Current in multimeter battery can destroy transistors some cases 0 1 volt applied between base and emitter in reverse direction can destroy the transistor Table 2 1 Remote Control Unit Dc Resistance Transformer or Coil Termina
75. rd Transportation Discrepancy Report TDR SF 361 as prescribed in AR 55 38 NAVSUPINST 461 0 33C AFR 75 18 MCO P4610 19D DLAR 4500 15 1 4 Reporting Equipment Improvement Recommendations EIR If your equipment 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 about the equipment Let us know why you dont like the design or performance Put it on an SF 368 Product Quality Deficiency Report Mail it to Commander US Army Communications Electronics Command and Fort Monmouth ATTN AMSEL ED PH Fort Monmouth New Jersey 07703 5000 We ll send you a reply 1 5 Administrative Storage Equipment issued to and used by Army activities will have preventive maintenance performed in accordance with the PMCS charts before storing When removing the equipment from administrative storage the PMCS should be performed to assure operational readiness Disassembly and repacking of equipment for shipment or for limited storage is covered in manua TM 11 5820 477 12 1 6 Destruction of Army Electronics Materiel Destruction of Army electronics materiel to prevent enemy use shall be in accordance with TM 750 244 2 Section EQUIPMENT DESCRIPTION AND DATA Equipment Characteristics Capabilities and Features 1 3 Description of Major Components Re 1 3 Differences Between
76. t hunts causing strain to the drive train ing is minimized by adjusting the lag to 29 without degradation of A Operation 3 10 15 5 3 1 Item 5 Function colum Change 2 db to REASON Th amp edjustment procedure for the TRANS POWER FAULT in alls for a 3 db 500 watts adjust ment to li e TRANS POWER FAULT indicator Ld Add new step 1 to read Replace cover plate removed step 1 above 5 8 REASON replace the cover plate rr one C 3 On Ji 2 change 24 VDC to 5 VDC N REASON This is the output line of the 5 VDC power supply 24 VDC is the input voltage JHAR ONC PERFORATED LINE l PRINTEO GRADE OR TITLE AND TELEPHONE NUMBER SSG I M DeSpiritof 999 1776 w lt DA FORM 2028 2 PREVIOUS EDITIONS YT 1 JUL 79 ARE OBSOLETE RECOMMENDATION MAKE A CARBON COPY THIS AND GIVE TO YOUR HEADQUARTERS FiLL IN YOUR UNIT S ADDRESS FOLD BACK DEPARTMENT OF THE ARMY 38 0311 80830 OFFICIAL BUSINESS Commander US Army Communications Electronics Command and Fort Monmouth ATTN AMSEL LC LM LT Fort Monmouth New Jersey 07703 9988 go FOLD BACK RECOMMENDED CHANGES TO EQUIPMENT TECHNICAL PUBLICATIONS SOMETHING WRONG with THis PusLicaTion FROM PRINT YOUR UNIT S COMPLETE ADDRESS
77. tep 7 Check for defective relay K201 by checking continuity of relay contacts 1 4 and 2 If defective replace paragraph 2 13 9 RADIO SET TRANSMITTER IS NOT ENERGIZED BY REMOTE CONTROL UNIT Step 1 Check for defective oscillator Q204 by checking for presence of operating voltage at terminal 4 of component board A201 If defective replace oscillator paragraph 2 13 Step 2 Check for defective audio amplifier Q205 by checking for presence of operating voltage at terminal 3 of component board A201 If defective replace audio amplifier paragraph 2 13 Step 3 Check for defective audio line transformer T201 by checking resistance of transformer windings paragraph 2 5 If defective replace paragraph 2 13 Step 4 Check for defective capacitor C214 If defective replace paragraph 2 13 2 7 Local Control Unit Troubleshooting Table 2 4 lists troubleshooting procedures for local control unit C 2329 GRA 39 Refer tb figure 2 3 for the locations of components identified in table 2 41 t c 2 Jo 1 1894S 5 pue 6E VHON 6ZEZ 0 HUN joruoo e501 6 2 6 i voo 6587 2 KIO FLIO3 04 102 6 a RnS But IOI HIDDEN SIO3 MIOOE ef 2 E NOTES I SUPPLY VOLTAGE TO UNIT 15 90 VOLTS 2 ALL MEASUREMENTS MAOE WITH NO SIGNAL APPLIED 3 TERMINALS ON UNIT ARE OPEN 4 MEASUREMEN
78. ttery voltage to the stages in paragraphs a through c below This action is described in paragraph 1 17 a 0101 and 0102 The local control unit prearnplifier is functionally the same as the Q202 in the remote control unit For explanation of the circuit and component functions see b Resonant Relay Arnplifier Q103 Q104 and Q105 The resonant relay amplifier consists of 3 900 Hz amplifier Q105 and two emitter followers Q103 and 0104 Emitter followers 0103 and 0104 rectify the output of 3 900 Hz amplifier Q105 1 16 TM 11 5820 477 30 1 Signals present at the LINE binding posts when the TEL REMOTE RADIO switch is in the REMOTE position are coupled through the secondary of T101 terminals 3 and 4 to terminal of filter FL102 Filter FL102 passes only the 3 900 Hz signal and rejects all other signals From terminal 2 of filter FL102 the 3 900 Hz signal is applied to pins B of P102 and J104 2 The 3 900 Hz signal is coupled by capacitor 10 to the base of 3 900 Hz amplifier Q105 Capacitor 07 couples the output of 0105 to emitter follower 0104 Resistor R111 provides a termination for filter FL102 Resistors R108 and R110 form a voltage divider to establish the base to emitter forward bias for Q105 Battery voltage is applied to the emitter of Q105 through voltage dropping resistor R112 and emitter swamping resistor R109 Capacitor 08 bypasses resistor R112 Inductor 1101 is the collector load for 0105 Th
79. ttery supply side of switch 5201 Refer to FO 2 FO 3 and FO 4 respectively TM 11 5820 477 30 1 15 Functioning of Local Control Unit C 2329 GRA 39 and 1 6 The following discussion applies to all models of Control Radio Set C 2329 GRA 39 except where noted a Telephone Operation Between Sites 1 Ringing Signaling the operator at the remote site requires that the RINGER button be pressed and released rapidly several times this action activates magneto G101 to generate a ringing signal When the RINGER button is pressed switch 5103 which normally connects buzzer 05101 and in and C models call lamp signal to audio line transformer T101 is actuated to connect the magneto to T101 The ringing signal is coupled through T101 through the line to the remote site Incoming ringing signals are coupled through T101 to activate buzzer DS101 In A B and C models incoming ringing signals are also applied to the call lamp control relay to activate the call lamp visual signal For operation of D8101 TEL REMOTE RADIO switch S102 may be in any position however it must be held at the TEL position for the operator at the remote site to hear the local operators voice 2 Telephone communication With the TEL REMOTE RADIO switch held in the TEL position transmitted voice signals generated in the microphone of the H 138 U are amplified by audio amplifiers Q101 and Q102 in the preamplifier and are coupled thro
80. ubleshooting Local Control Unit cent Malfunction Test or Inspection Corrective Action 9 RADIO SET TRANSMITTER IS ENERGIZED BY LOCAL CONTROL UNIT BUT SIGNALS ARE NOT TRANSMITTED cent Step 3 Check for defective transformer T102 by checking resistance of all transformer windings paragraph 2 5 If defective replace paragraph 2 13 Step 4 Check for defective filter FL104 by checking resistance of filter paragraph 2 5 If defective replace paragraph 2 13 Step 5 Check for defective connector 01 by checking continuity of connector pin D If defective replace paragraph 2 14 10 RADIO SET TRANSMITTER IS ENERGIZED BY REMOTE CONTROL UNIT BUT SIGNALS ARE NOT TRANSMITTED Step 1 Check for defective filter FL101 by checking resistance of filter paragraph 2 5 If defective replace paragraph 2 13 Step 2 Check for defective relay K101 by checking continuity of relay terminals 4 and 2 If defective replace paragraph 2 13 Step 3 Check for defective attenuator by checking for open resistor R114 R115 R116 R117 R118 or 119 Replace defective resistor s paragraph 2 13 Step 4 Check for defective switch 102 by checking continuity of switch section B rear contacts 2 and 4 If defective replace paragraph 2 14 Step 5 Check for defective Transformer T102 by checking resistance of all transformer windings paragraph 2 5 If defective replace paragraph 2 13 Step 6 Check for defective
81. ugh T101 through the line to the remote site Incoming voice signals from the remote site are coupled by T101 to the H 138 U earpiece through switch S102 b Operation of Radio Set From Local Control Unit 1 Transmitting With the TEL REMOTE RADIO switch held in the spring loaded RADIO position with the handset push to talk switch pressed voice signals developed in the handset microphone are connected through switch 5102 transformer T102 and filter FL104 to the radio set transmitter Relay K101 is energized and in turn keys the radio set transmitter 2 Receiving With the TEL REMOTE RADIO switch in REMOTE or held in the RADIO position signals from the radio set are applied directly through switch S102 to the handset earpiece c Operation of Radio Set From Remote Control Unit With the TEL REMOTE RADIO switch in the REMOTE position the local control unit couples the signals from the remote control unit to the radio set transmitter and the signals from the radio set receiver to the remote control unit 1 Transmitting Voice and 3 900 Hz signals present at the LINE binding pests are coupled through T101 to filters FL101 and FL102 respectively Filter FL102 is a series tuned filter which passes only a 3 900 Hz signal Filter FL101 is a parallel tuned filter which provides rejection to the 3 900 Hz signal and allows voice signals to pass Filter FL102 applies the 3 900 Hz signal to resonant relay amplifier Q103 Q104 and Q105 The 3 9

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