31R2-2GRR-116WC-1.pdf

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DISTRIBUTION STATEMENT B - Distribution authorized to U.S. Government Agencies only (Administrative or Operational Use) (1 June 1982). Other requests for this document shall be referred to 406 SCMS/GUHA, Robins AFB, GA 31098. Questions concerning technical content shall be referred to 580 CBSS/GBLC.

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BASIC AND ALL CHANGES HAVE BEEN MERGED

TO MAKE THIS A COMPLETE PUBLICATION

TO 31R2-2GRR-116WC-1

LIST OF EFFECTIVE CARDS

INSERT LATEST CHANGE CARD. DESTROY SUPERSEDED CARDS.

Dates of Issue tor original and changed cards are:

Original................................ 0 ........................................................1 Jun 82 Change.................................8 ........................................................7 Nov 85 Change.................................! ......................................................10 Aug 82 Change.................................?....................................................... 15 Jul 89 Change.................................3, ........................................................3 Jan 83 Change..............................10 ......................................................28 -fun 90 Change.................................3......................................................... I Jul 83 Change............ ..................11 ......................................................26 Sap 91 Change.................................4 15 Dec 83 Change...............................12 ........................................................3 Aug 92 Change.................................5...................................................... 12 Jun 84 Change...............................13 ......................................................19 Nov 92 Change.................................6 15 Jan B5 Change...............................14 6 May 93 Change................................. 7................................................... 24 Jun 85 Change...............................16........................................................ 3 Jan 00

The total number of cards In this publication Is 13, consisting of the following:

PAGE NO. CHANGE NO. PAGE NO. CHANGE NO. PAGE NO. CHANGE NO.

Title................................................................15 1.002..............................................................15 1-006 A,....................................................................15 1-003............................................................... 9 1-007 Deleted 1-01................................................................. 10 1-004 13 1-008 Peleted 1-02 -1-03......................................................... 0 1-005 1-001................................................................ 0 1-006A Deleted 1-001A Added................................................ 10 1-006B

A Change 15

PUBLICATION NUMBER INSPECTION REQUIREMENTS FIGURE CHANGE NO. CARD NO.

TO 31R2-2GRR-116WC-1 TABLE OF CONTENTS 10 1-01

TABLE OF CONTENTS 1.01

INTRODUCTION 1.02

INSPECTION REQUIREMENTS 1-001

336-DAY INSPECTION 1.001A

SERVICE AND LUBRICATION REQUIREMENTS N/A

SPECIAL INSPECTIONS N/A

TIME REPLACEMENT ITEMS N/A

REPAIR RESTRICTIONS N/A

Hm- |,o,K WOK UKIT INSPECTIOH ElECTBICAl POWE SEBVICE ROUBE MBD NO

"" "EA ~OT~"sug^T’________INTRODUCTION________ EQUIEMEHTS_________________ 1-02

GENERAL INTRODUCTION

1. THESE WORKCARDS CONTAIN ALL REQUIREMENTS FOR ACCOMPLISHING SCHEDULED MAINTENANCE ON GROUND ELECTRONIC (C.E) EQUIPMENT DURING ITS ENTIRE SERVICE LIFE. IT ESTABLISHES INSPECTION, ACCESSORY REPLACEMENT, DEPOT LEVEL, AND BASE LEVEL REPAIR REQUIREMENT/RESTRICTIONS. THESE REQUIREMENTS ARE PRIMARILY TECHNICAL IN NATURE AND THE CONDITIONS LISTED ARE INTENDED TO DIRECT ATTENTION TO KNOWN PROBLEM AREAS. THESE REQUIREMENTS ARE DEVELOPED FOR NEW C-E EQUIPMENT THROUGH MAINTENANCE ENGINEERING AND COMPARISON OF SIMILAR INSTALLATIONS, OR IN-SERVICE C-E EQUIPMENT. THE INTERVAL BETWEEN THE ACCOMPLISHMENT OF A REQUIREMENT IS INTENDED TO BE THE LONGEST PERIOD OF TIME THAT AN ITEM OR COMPONENT CAN SAFELY OPERATE WITHOUT AN INSPECTION OR OBSERVATION. WHEN THE C-E EQUIPMENT IS OPERATED IN OTHER THAN THE PRIMARY PURPOSE, OR MAJOR USE CLASS. THE NECESSARY REQUIREMENTS HAVE BEEN ADJUSTED ACCORDINGLY, AND THE REQUIREMENTS IDENTIFIED AS TO CLASS OF OPERATION. THESE REQUIREMENTS AND INSPECTION INTERVALS ARE THE MAXIMUM AND SHOULD NEVER BE EXCEEDED. LOCAL CONDITIONS, (TYPE OF MISSION, SPECIAL UTILIZATION, GEOGRAPHICAL LOCATION, ETC.) MAY DICTATE MORE FREQUENT INSPECTIONS, REPLACEMENT OR MORE THOROUGH INSPECTIONS, THEREFORE, COMMANDS, LOCAL COMMANDERS, AND THEIR MAINTENANCE OFFICERS HAVE THE PREROGATIVE TO INCREASE THE FREQUENCY OR SCOPE OF ANY REQUIREMENT, AND ARE EXPECTED TO EXERCISE THIS PREROGATIVE.

2. THE INSPECTIONS PRESCRIBED BY THESE WORKCARDS WILL BE ACCOMPLISHED AT SPECIFIED PERIODS BY AIR FORCE ORGANIZATIONAL ACTIVITIES WITH ASSISTANCE PROVIDED BY AIR FORCE INTERMEDIATE MAINTENANCE ACTIVITIES AND

SPECIALIZED REPAIR ACTIVITIES, WHEN REQUIRED. COMPLIANCE WITH THE PROVISIONS

(CONTINUED ON BACK)

MHO HO. WOBK *EA(5) TYPE NECH RQB MECH NO. --CARD TIME-- PUBLICATION NUMBER AND DATE CHANGE HO.

1-02 31R2-2GRR-116WC-1 01 JUN 82_________________

ELECTRICAL POWEB SERVICE FIGURE CARD NO.

MAN WOBK INSPECTION

MIN AREA SYS SUB-SK INTRODUCTION___________________REOUIREMEItTS______________________________ 1-02

OF THESE WORKCARDS IS REQUIRED TO ASSURE THAT LATENT DEFECTS ARE DISCOVERED AND CORRECTED BEFORE

MALFUNCTIONING OR SERIOUS TROUBLE RESULTS.

3. THE INSPECTION REQUIREMENTS ARE STATED IN SUCH A MANNER AS TO ESTABLISH WHAT EQUIPMENT IS TO BE INSPECTED, WHEN IT IS TO BE INSPECTED, AND WHAT CONDITIONS ARE TO BE SOUGHT. IN SCOPE, THE REQUIREMENTS ARE DESIGNED TO DIRECT THE ATTENTION OF MAINTENANCE PERSONNEL TO COMPONENTS AND AREAS WHERE DEFECTS MAY EXIST AS A RESULT OF USAGE UNDER NORMAL OPERATING CONDITIONS. THEY ARE NOT INTENDED TO PROVIDE COVERAGE FOR ROUTINE CLEANING, WASHING, ETC., NOR ARE THEY DESIGNED TO LEAD TO THE DETECTION OF ISOLATED DISCREPANCIES THAT MAY OCCUR ON A ONE-TIME BASIS, OR DISCREPANCIES THAT ARE THE RESULT OF CARELESSNESS, ABUSE OR POOR MAINTENANCE PRACTICES.

DURING ACCOMPLISHMENT OF THE SPECIFIC REQUIREMENTS DIRECTED BY THESE WORKCARDS, MAINTENANCE PERSONNEL SHOULD OBSERVE BOTH THE EQUIPMENT BEING INSPECTED AND THE COMPONENTS IN THE SURROUNDING AREA FOR DEFECTS OR IRREGULARITIES NOT WITHIN THE SCOPE OF THE REQUIREMENTS. REQUIREMENTS REQUIRING THE USE OF ELECTRICAL POWER FOR ACCOMPLISHMENT ARE IDENTIFIED BY A COMMERCIAL "@" SYMBOL PRECEDING THE PARAGRAPH NUMBER FOR THE

REQUIREMENTS.

4. THE REPLACEMENT SCHEDULE DIRECTS REPLACEMENT OF ITEMS AT A SPECIFIC TIME WHEN A FAILURE WOULD COMPROMISE SAFETY OR OPERATION BEYOND REASONABLE LIMITS OR DEFINITELY CAUSE A MISSION FAILURE, ALSO CONSIDERED ARE ANY HIGH COST ITEMS WHOSE FAILURE WOULD RESULT IN CONDEMNATION AND ANY SHORT LIFE ITEMS WHICH WOULD REQUIRE FREQUENT UNSCHEDULED MAINTENANCE. ITEMS NOT LISTED WILL BE KNOWN AS "CONDITION ITEMS" AND WILL BE REPLACED

ONLY WHEN NECESSARY.

MAN WORK WORK UNIT INSPECTION

ElECTHHX POWEl SEBVICE R6UE OARD NO.

m AHEA ~sis~ SUB-SVS INTRODUCTION REQUIREMENTS 1.03

(CONTINUED FROM PREVIOUS CARD)

5. BASE LEVEL REPAIR RESTRICTIONS, LISTS ITEMS (BY WORK UNIT CODE, NOMENCLATURE, FSC, AND PART NUMBER) FOR WHICH

BASE LEVEL REPAIR RESTRICTIONS HAVE BEEN ESTABLISHED, AND DESCRIBES THE REPAIRS WHICH ARE NOT AUTHORIZED.

6. THE TIME IN MAN-MINUTES FOR ACCOMPLISHMENT OF REQUIREMENTS REFLECTS ONLY THE TIME REQUIRED FOR INSPECTION OR REPLACEMENT. THIS TIME DOES NOT INCLUDE TIME REQUIRED TO GAIN ACCESS TO THE EQUIPMENT TO FACILITATE ACCOMPLISHMENT. THOSE FACTORS (PERSONNEL AND EQUIPMENT SHORTAGES, LACK OF PARTS, ADVERSE WORKING CONDITIONS, AND QUALIFICATIONS OF PERSONNEL) WHICH WILL DIRECTLY AFFECT THE LENGTH OF TIME OF ANY SCHEDULED MAINTENANCE

ARE NOT INCLUDED BECAUSE THEY CANNOT BE ACCURATELY PREDICTED.

7. THESE WORKCAROS DO NOT CONTAIN DETAILED INSTRUCTIONS FOR TROUBLESHOOTING TO FIND CAUSES FOR MALFUNCTIONING, NOR DO THEY CONTAIN INSTRUCTIONS FOR REPAIR, ADJUSTMENT, OR OTHER MEANS OF RECTIFYING DEFECTIVE CONDITIONS.

PROPER INSTALLATION OF A PIECE OF EQUIPMENT OR ACCESSORY IS NOT NECESSARILY WITHIN THE SCOPE OF THESE WORKCARDS AS ADEQUACY AND COMPLETENESS OF INSTALLATION WILL HAVE BEEN DETERMINED AT THE TIME OF INSTALLATION.

APPLICABLE PORTIONS OF THE APPROPRIATE MAINTENANCE MANUAL SHOULD BE CONSULTED TO OBTAIN "HOW TO"

MAINTENANCE INSTRUCTIONS AS THEY ARE BEYOND THE SCOPE OF THESE WORKCARDS.

8. FOR THE PURPOSE OF CLARIFICATION OF TERMS USED IN THESE WORKCARDS, THE FOLLOWING DEFINITIONS ARE GIVEN:

(CONTINUED ON BACK)

CARD NO. WOBK AREA(S) TYPE MECH RQR MECH NO. CARD TIME PUBLICATION NUMBER ANO OATE CHANCE NO.

1-03______________________ 31R2-2GRR-116WC-1 01 JUN 82__________________

MAN ^ __""__ SECTION

ELKracAL rotvE" ""’"" Flauffi MR1) "-

MW SYS SU8-SYS INTRODUCTION liEQUIPEMENTS 1.03 SPECIFIED- REFERS TO A DEFINITE AMOUNT, OPERATION, OR LIMITATION WHICH HAS BEEN ESTABLISHED AND IS CONTAINED IN

APPLICABLE DIRECTIVES.

EVIDENCE- IS PROOF OF A SUSPECTED OR EXISTING UNSATISFACTORY CONDITION.

SECURE- MEANS THE COMPONENT IS PROPERLY MOUNTED OR ATTACHED TO RELATED EQUIPMENT, INCLUDING APPLICABLE

SAFETYING.

ACCESSIBLE- IS THE TERM APPLIED TO EQUIPMENT THAT NAY BE INSPECTED WITHOUT FURTHER DISASSEMBLY OR REMOVAL OF COVERS, CLOSURES, PANELS, ETC., OTHER THAN THOSE REQUIRED TO ACCOMPLISH THE MORE SPECIFIC REQUIREMENTS

APPLICABLE TO THE PARTICULAR INSPECTIONS.

9. CHANGES AND REVISIONS TO THESE WORKCARDS WILL BE PUBLISHED WHEN NECESSARY TO ADO, DELETE, OR CHANGE FREQUENCY OR SCOPE OF REQUIREMENTS. SUCH CHANGES WILL BE BASED ON FACTUAL DATA ACCUMULATED AS A RESULT OF MAINTENANCE EXPERIENCE WITH THE EQUIPMENT, RECOMMENDATIONS PROPOSING CHANGES TO THESE WORKCARDS SHOULD BE SUBMITTED ON AFTO FORM 22 IN ACCORDANCE WITH TO 00-5-1 TO THE USING COMMAND HEADQUARTERS.

NOTE

ALL CORROSION WILL BE TREATED IN ACCORDANCE WITH TO 1-1-689.

, ^_TORUNT__ ,^^

ElECTOAL POWER SE.V.CE Fl CARD NO.

MM AREA SYS SUB-iM INTRODUCTION ItEQtIIREtlENTS 1-001

INSPECTION REQUIREMENTS

I. THESE INSPECTION WORKCARDS PROVIDE THE REQUIREMENTS FOR INSPECTION AND WILL BE USED AS A GUIDE IN PERFORMING THE INSPECTION TO INSURE THAT NO ITEM IS OVERLOOKED. THE CARD SIZE AFFORDS CONVENIENT HANOIING BY MAINTENANCE PERSONNEL WHILE PERFORMING AN INSPECTION. WORK ASSIGNMENT INFORMATION IS PROVIDED AT THE BOTTOM OF EACH CARD TO PERMIT ESTABLISHMENT OF A CONVENIENT FILING SYSTEM FOR THE SET OF CARDS AND IN MAKING WORK ASSIGNMENTS TO

MAINTENANCE PERSONNEL

Z. DETAILED INSTRUCTIONS FOR THE USE OF THESE CARDS AND THE DESCRIPTION AND APPLICATION OF OTHER FORMS AND CHARTS TO BE USED IN CONJUNCTION WITH THESE CARDS ARE CONTAINED IN 00-20 SERIES TECHNICAL ORDERS.

CARD NO. WORK ARH(S) TYPE MECH BOB MECH NO. CMC TIME PUBLICATION NUMBEIi AND DATE CHANCE NO.

1-001______________________ 31R2-2GRR-116WC-1 01 JUN 82_________________

ronr ELECTRICAL POWER SERVICE FIGURE CARD NO.

MAN WORK -Jm u""CODC INSPECTION

MIN AREA SYS SUB 336-DAY REQUIREMENTS OFF OUT 1-001 A

RECEIVER RADIO AN/GRR-23(V) AND AN/GRR-24(V).

1. INSPECT FACILITY GROUND AND EQUIPMENT GROUNDING CONNECTIONS TO ENSURE EQUIPMENT IS PROPERLY CONNECTED TO THE

FACILITY GROUND. ENSURE THAT ALL CONNECTIONS ARE TIGHT AND FREE OF CORROSION PRIOR TO EVALUATING EQUIPMENT PARAMETERS FOR PROPER OPERATION. REFERENCE T.O. 31-10-24, CHAPTERS 3, AND 10 AS APPLICABLE.

CARD NO. WORK AREA(S) TYPE MECH ROR MECH NO CARD TIME PUBLICATION NUMBER CHANGE NO.

1-001A :10 TO 31R2-2GRR-116WC-1 10

ELECTRICAL POWER SERVICE FIGURE CARD NO.

^m WORK WORK U IT COPE INSPECTION

MIN ARE* SYS SUB 336-DAY REQUIREMENTS ON OUT 1-002

RECEIVER RADIO AN/QRR-23(V) AND AN/QRR -24(V) MINIMUM PERFORMANCE.

1. TEST EQUIPMENT REQUIRED (OR EQUIVALENT):

A. HEWLETT-PACKARD 608C/D SIGNAL GENERATOR.

B. HEWLETT-PACKARD 427A VOLTMETER.

C. FLUKE 8300A DIGITAL VOLTMETER.

D. 600 OHM HEADPHONE.

E. HEWLETT-PACKARD 333A DISTORTION ANALYZER

2. TURN SIGNAL GENERATOR ON AND SET THE FREQUENCY TO SAME FREQUENCY AS RECEIVER OPERATING FREQUENCY. ALLOW

30 MINUTES FOR SIGNAL GENERATOR TO STABILIZE

3. TURN RECEIVER ON. VERIFY THE RECEIVER Bt IS NORMAL CHECK UNREGULATED B+ (27 VDC TO 40 VDC) AND REGULATED Bt(18>/-.4VDC) TEST POINTS.

(CONTINUED ON BACK)

CARD NO. WORN AREA<S) TYPE MECH RQR MECH NO CARD TIME PUBLICATION NUMBER CHANCE NO.

1-002 :45 TO 31R2-2GRR-116WC-1 15

ELECTRICAL POWER SERVICE FIGURE CARD NO.

MAN WORK WORK U IT CODE INSPECTION

MIN AREA SY5 SUB 336-DAY REQUIREMENTS ON OUT 1-002

NOTE

IF THE REGULATED B+ IS ADJUSTED, TOTAL REALIGNMENT OF THE RECEIVER IS

REQUIRED.

4. REMOVE COAXIAL JUMPER BETWEEN ANTENNA AND RECEIVER INPUT CONNECTORS ON RECEIVER FRONT PANEL.

NOTE

IF THE RECEIVER IS USED IN A SYSTEM ENVIRONMENT, REMOVE FROM THE SYSTEM

FOR THE DURATION OF THE PERFORMANCE CHECK.

5. DELETED

6. CONNECT SIGNAL GENERATOR TO RECEIVER INPUT CONNECTOR.

7. PLACE RECEIVER SQUELCH ON-OFF SWITCH TO OFF.

8. SET SIGNAL GENERATOR TO -97.5 (3.0 MICROVOLTS) +/- 0.5 DBM, 30% +/- 1% MODULATION AT KHZ +/- 10%.

NOTE

IF YOU ARE USING THE 608 C/D TYPE GENERATOR, THEN CAREFULLY ADJUST SIGNAL

GENERATOR FREQUENCY USING BOTH COARSE AND FINE CONTROLS TO OBTAIN MAXI-

MUM AGC VOLTAGE AS OBSERVED ON MULTIMETER. IF SIGNAL GENERATOR HAS NOT

STABILIZED AND CONTINUES TO DRIFT IN FREQUENCY, THEN REPEAT THE COARSE

AND FINE CONTROL ADJUSTMENT FOR MAXIMUM AGC VOLTAGE AT INTERVALS TO

ENSURE SIGNAL GENERATOR IS ON FREQUENCY.

9. CONNECT VOLTMETER, SET ON 300 MV AC SCALE, BETWEEN IF AND GROUND TEST POINTS ON RECEIVER.

MAN >,OK__WE__ INSPECTION

ElKTRICAL POWER SERVICE FIGURE CARD NO.

Ml" 1BEA SYS SUB-SYS 336-DAY REQUIREMENTS ON OUT 1-003

(CONTINUED FROM PREVIOUS CARD)

10. OBSERVE READING OF 120-180 MV ON THE METER.

11. SET THE VOLTMETER ON THE 10 VDC SCALE AND CONNECT VOLTMETER BETWEEN AGC AND GROUND TEST POINTS. REDUCE THE

SIGNAL GENERATOR LEVEL TO -120 DBM (0.224 MICROVOLTS) +/- DBM.

12. OBSERVE THAT THE AGC VOLTAGE, AS READ ON VOLTMETER, DROPS TO ITS QUIESCENT VALUE OF FROM +2.6 VDC TO +3.2 VDC.

IF VOLTAGE DOES NOT DROP ADJUST THROUGH TOP COVER UNTIL AGC VOLTAGE JUST DROPS TO +2.6 VDC TO +3.2 VDC.

13. SET SIGNAL GENERATOR TO -102 (1,78 MICROVOLTS) +/- 0.5 DBM.

14. OBSERVE AGC VOLTAGE, AS READ ON VOLTMETER, TO BE 5.0 VDC OR GREATER.

15. SET SIGNAL GENERATOR TO -97.5 (3.0 MICROVOLTS) +/- 0.5 DBM, 30 +/-1% MODULATION AT KHZ +/- 10%.

(CONTINUED ON BACK)

CARD NO, WORK AREA(S) TYPE MECH ROB HECH NO. CARD TIME PUBLICATION NUMBER ANO DATE CHANGE NO.

1-003 31R2-2GRR-116WC-1 15 JUL 89 9

MAN WORK ^W" INSPECTION

ELECTRICAL POWER SERVICE HCURE CARD HO.

UK AREA SYS SUB-SYS 336-DAY REQUIREMEHTS ON OUT 1-003

16. CONNECT VOLTMETER SET TO MEASURE 300 MV AC FULL SCALE, BETWEEN IF AND CROUND TEST POINTS ON RECEIVES.

17. THE READING OBTAINED IH STEP 10 SHOULD REMAIN BETWEEN 120-180 MV.

18. SET VOLTMETER TO VAC SCALE, BETWEEN MAIN AF AND GROUND TEST POINTS.

19. ADJUST AUDIO MAIN ADJ CONTROL ON RECEIVER FRONT PANEL MAXIMUM CLOCKWISE.

ELECTRICAL POWER SERVICE RflURE CARD NO.

MAN WORK WORK UNIT CODE

INSPECTION

MIN AREA STS SUB 336-DAY REQUIREMENTS ON OUT 1-004

(CONTINUED FROM PREVIOUS CARD)

20. REMOVE RECEIVER TOP COVER. ADJUST COMPRESSIOM LEVEL (R41) ON A6C/SQUELCH MODULE MAX CLOCKWISE.

21. OBSERVE VOLTMETER READING OF 2.0 VAC +/- 25 MILLIVOLTS. IF STANDARD IS NOT MET, ADJUST AF PREAMP ADJ (R32) ON AGC/

SQUELCH MODULE.

22. ADJUST AUDIO MAIN ADJ LEVEL CONTROL ON FRONT PANEL OF RECEIVER TO 1.6 VAC +/- 25 MILLIVOLTS.

23. READJUST AF PREAMP ADJ (R32) TO 2.0 VAC +/- 25 MILLIVOLTS.

24. ADJUST COMPRESSION LEVEL CONTROL (R41) ON A5C MODULE TO 1.95 VAC +/- 10 MILLIVOLTS.

25. INCREASE SIGNAL GENERATOR PERCENT MODULATION FROM 30% TO 90%. VOLTAGE AT MAIN AF TEST POINT SHALL REMAIN

WITHIN 1.75 TO 2.45 VOLTS.

26. RESET SIGNAL GENERATOR TO -97.5 DBM (3.0 MICROVOLTS) +/- 0.5 DBM; 30% +/- 1% MODULATION AT KHZ +/- 10 %. ADJUST

RECEIVER AUDIO MAIN ADJ CONTROL FOR 1.0 VAC AT THE MAIN AF TEST POINT.

27. SET VOLTMETER 427A TO VAC SCALE.

28. SWITCH SIGNAL GENERATOR TO CW MODE -97.5 DBM (3.0 MICROVOLTS) +/- 0.5 DBM. OBSERVE THAT VOLTMETER READING

DROPS TO 0.316 VAC OR LESS (-10 DBM, HP 427A).

29. SET VOLTMETER TO 3 VAC SCALE.

30. SET SIGNAL GENERATOR TO -97.5 DBM (3.0 MICROVOLTS) +/- 0.5 DBM, 30 +/-1% MODULATION AT KHZ +/- 10%.

CARD NO. WORKAREA(S) TYPE MECH RQR MECH NO CARD TIME PUBLICATION NUMBER CHANCE NO.

1-004 T.O. 31R2-2GRR-116WC-1 19 NOV 92 13

MAN WORK WOffi UNIT CODE

INSPECTION

ELECTRICAL POWER SERVICE H6URE CARONO.

MIN A11E* SYS SUB 336-DAY REQUIREMENTS ON OUT 1-004

31. VERIFY MAIN AF IS STILL 1.0 VAC +/- 0.5 VAC.

32. CONNECT HEADPHONES TO AUDIO OUTPUT JACK ON RECEIVER FRONT PANEL. CONNECT DISTORTION ANALYZER TO MAIN AF

TEST POINT (J15).

33. ADJUST AUDIO PHONE ADJ CONTROL ON FRONT PANEL OF RECEIVER FOR COMFORTABLE LISTENING LEVEL.

34. WHILE MAINTAINING MODULATION LEVEL AT 30%, SLOWLY ADJUST POWER LEVEL Of SISNAL GENERATOR FROM -97.5 DBM (3.0

MICROVOLTS) +/- 0.5 DBM TO +13 DBM (999 MV) +/- 10 MV.

35. AGC TEST: WHILE CHANGING POWER OBSERVE THAT HIGHEST AND LOWEST EXCURSION OF VOLTAGE ON DB SCALE OF METER DOES NOT DIFFER MORE THAN 3 DB (IN TERMS OF VOLTAGE V MIN/V MAX SHOULD BE 0.7 OR GREATER).

36. DISTORTION TEST: WHILE MAINTAINING A +13 dBM LEVEL OUT OF THE SIGNAL GENERATOR, MODULATED 1000 HZ AT 30%, OBSERVE THAT THE TONE IN THE HEADPHONES DOES NOT EXHIBIT DISTORTION; 10% OR LESS AS MEASURED ON THE DISTOR-

TION ANALYZER.

37. SET SIGNAL GENERATOR TO -97.5 DBM (S.Q MICROVOLTS) +/- 0.5 DBM MODULATED 30% +/- 10% AT KHZ +/- 10%.

38. SET RECEIVER AUDIO SQUELCH ADJ CONTROL ON RECEIVER FRONT PANEL MAXIMUM COUNTER CLOCKWISE, PLACE RECEIVER

SQUELCH ON-OFF SWITCH TO ON.

39. OBSERVE AUDIO SHOULD REMAIN FULLY AUDIBLE AND UNCHANGED IN HEADPHONES (RECEIVER SHOULD NOT BE SQUELCHED).

40. SET RECEIVER AUDIO SQUELCH ADJ CONTROL ON RECEIVER FRONT PANEL MAXIMUM CW. RECEIVER SHOULD BE SQUELCHED

(QUIETED).

41. RAISE SIGNAL GENERATOR POWER LEVEL TO -73 DBM (50.1 MICROVOLTS) +/- 0.5 DBM. OBSERVE RECEIVER REMAINS

SQUELCHED.

^, ^, wo^co^ ,^^^, .UCT^POWB, ^ nu coo NO.

MIN *NU tvi sui 336-DAY KCDUIRCMCKT* ON OUT 1-008

(CONTINUED FROM PREVIOUS CARD)

42. SET SIGNAL GENERATOR AT DESIRED SQUELCH LEVEL (MUST BE LESS THAN -73 DBM|.

43. PLACE VOLTMETER RANGE SELECTOR SWITCH TO 30 VDC SCALE, PLACE VOLTMETER DC PROBE IN RECEIVER SQUELCH TEST

POINT

44. SLOWLY TURN AUDIO SQUELCH ADJUST CONTROL CCW; VOLTMETER SHOULD SUDDENLY INCREASE TO APPROXIMATELY 15 VDC (SQUELCH VOLTAGE) FOR THE EARLY CONFIGURATION AGC MODULE, OR TO APPROXIMATELY 8 VOC FOR THE LATER CONFIGUR-

ATION AGC MODULE.

45. DECREASE SIGNAL GENERATOR LEVa UNTIL THE RECEIVER IS SQUELCHED. SLOWLY INCREASE SIGNAL GENERATOR RF OUTPUT LEVEL UNTIL A SQUELCH VOLTAGE LEVEL OF APPROXIMATELY 8 VDC IS OBTAINED. SIGNAL GENERATOR OUTPUT SHOULD BE AT

DESIRED LEVEL. IF NOT RETURN TO STEPS 41 AND 43.

46. SET SIGNAL GENERATOR TO OFF AND DISCONNECT FROM RECEIVER. REPLACE COAXIAL JUMPER BETWEEN ANTENNA AND

RECEIVER INPUT CONNECTORS ON FRONT PANEL OF RECEIVER.

47. RETURN EQUIPMENT TO NORMAL OPERATING CONFIGURATION.

CMC NO. WOM AREAl*) TWI MKNHW MCCHNO CRO TINE MJBUCTI(m NUMIBI CHANGE NO.

1-005 T.O. 31R2 2flRR 1-16WC-1 5 MAY 93 14 mniiK UNIT ELECTRICAL POWER SERVICE FIGURE CARD NO.

MAN WORK INSPECTION

MIN AREA SYS SUB-SYS 336-DAY REQUIBEMEflTS ON OFF OUT 1-005B

RECEIVER RADIO AN/GRR-23(V) AND AN/GRR-24(V) SYNTHESIZER, ELECTRICAL FREQUENCY 0-1701/GR) FREQUENCY CHECK.

1. TEST EQUIPMENT REQUIRED:

A. HEWLETT-PACKARD 5245L AND 5253B FREQUENCY COUNTER OR EQUIVALENT.

B. SUB-MINIATURE RF CONNECTOR ADAPTER PART NO 50-075-6801.

2. TURN RECEIVER POWER OFF.

3. REMOVE THE TOP COVER AND DISCONNECT COAXIAL CABLE FROM Jl OF THE MIXER MULTIPLIER.

4. CONNECT THE FREQUENCY COUNTER TO P2 UTILIZING SUBMINIATURE RF CONNECTOR ADAPTER P/N 50-075-6801.

@ 5. TURN RECEIVER POWER ON, WAIT AT LEAST 10 MINUTES BEFORE MEASURING THE FREQUENCY.

@ 6. FREQUENCY SHOULD BE WITHIN +/- 0.0005% FOR THE ELECTRICAL SYNTHESIZER.

7. TURN RECEIVER POWER OFF.

8. DISCONNECT THE FREQUENCY COUNTER AND REPLACE SYNTHESIZER OUTPUT CABLE P2 TO Jl OF THE MIXER/MULTIPLIER.

(CONTINUED ON BACK)

CARD NO WORH’AREAiS) TYPETEChTBOR MECH NO CARD ^ME PUBLICATION NUMBER AND DATE CHANGE NO.

1-005B___ :30 31R2-2GRR-116WC-1 7 NOV 85_____________ 8

M ^ _WWW__ "INSPECTION ELECTRICAL POM SERVICE FIGURE CARD NO.

A6EA s^ ^_^ 336-DAY BEQUIBEMENTS ON OFF OUT 1-005B

9. REPLACE THE TOP COVER.

10. RETURN RECEIVER TO NORMAL OPERATING CONFIGURATION

NOTE

REF TO 31R2-2GRR-112 TABLE 3-2A FOR

SYNTHESIZER DIAL DETERMINATION AND PARA

5-32 FOR ALIGNMENT PROCEDURES. IF NEEDED.

MAN WORK WORK UNIT INSPECTION ELECTRICAL POWER SERVICE PIQURE CARD NO.

MIN ABEA -sTT 3UB.3Y3 336-DAY REQUIREMENTS OFF OUT 1-006

"010 RECEIVER RADIO AN/GRR-23(V) AND AN/GRR-24(V).

WARNING

INSURE ALL POWER TO THE UNIT UNDER INSPECTION

IS OFF BEFORE PROCEEDING WITH STEP 1.

NOTE |

WITH BATTERY POWER BACKUP a REGULATED B+ VOLTAGE |

IS PRESENT WITHIN THE RECEIVER. I

1. INSPECT FOR THE FOLLOWING CONDITIONS (VISULA).

A. DUST.

B. DIRT,

(CONTINUED ON BACK)

OAF OHO. WORK AREA(S) TYPE MECH RQR MECH NO. CARD TIME PUBLICATION NUMBER AND DATA CHANGE NO.

1-006 10 TO 31R2-2GRR-116WC-1 25 SEP 91 11

WORK UNIT ELECTRICAL POWER SERVICE FIQURE CWD HO.

^ ^ ^"^T___________336-DAY_________S^a OFF OUT_____ 1-006

NOTE

CORRECTIVE ACTION WILL BE INITIATED IMMEDIATELY

WHEN CORROSION IS FOUND TO PREVENT FURTHER

DETERIORATION OF THE EQUIPMENT.

C. CORROSION IS THE DETERIORATION OF A MATERIAL BY CHEMICAL OR ELECTRO-CHEMICAL

REACTION WITH ITS ENVIRONMENT. INSPECT THE COMPLETE SYSTEM FOR EVIDENCE OF

CORROSION. PROCEDURES FOR IDENTIFICATION, ISOLATION AND CONTROL OF CORROSION

ARE IDENTIFIED IN THE FOLLOWING

TECHNICAL ORDERS:

TO 1-1-1 CLEANING OF AEROSPACE EQUIPMENT

TO 1-1-2 CORROSION PREVENTION AND CONTROL OF AEROSPACE EQUIPMENT

TO 1-1-8 APPLICATION OF ORGANIC COATINGS, AEROSPACE EQUIPMENT

TO 1-1-689 PREVENTION AND CONTROL OF CORROSION AND FUNGUS IN COMMUNICATIONS,

ELECTRONIC, METEOROLOGICAL, AND AVIONIC EQUIPMENT.

D. TIGHTNESS OF CONNECTORS AND LEADS.

_________TO 31R2-2GRR-116WC-1 Change 11