TM_11-5855-263-23 P_ANVIS-AVS-6_PartsList.pdf

ARMY TM 11-5855-263-23&P

NAVY NAVAIR 16-35AVS-5

TECHNICAL MANUAL

AVIATION UNIT AND INTERMEDIATE

MAINTENANCE MANUAL INCLUDING

REPAIR PARTS AND SPECIAL TOOLS LIST

AVIATOR'S NIGHT VISION

IMAGING SYSTEM (ANVIS)

AN/AVS-6(V)1

(NSN 5855-01-138-4749)

(EIC: IPR),

AN/AVS-6(V)2

(NSN 5855-01-138-4748)

(EIC: IPQ),

AN/AVS-6(V)1A

(NSN 5855-01-439-1745)

(EIC: IPW),

AND

AN/AVS-6(V)1B

(NSN 5855-01-439-1744)

(EIC: N/A)

DISTRIBUTION STATEMENT C. Distribution authorized to U.S. Government agencies and their contractors.

This publication is required for administration and operational purposes, as determined 8 July 1991. Other requests for this document shall be referred to either: Commander, U.S. Army Communications-Electronics Command and Fort Monmouth, ATTN: AMSEL-LC-LEO-D-CS-CFO, Fort Monmouth, NJ 07703-5006; or Commanding Officer, Naval Air Technical Data & Engineering Service Command, Code 3.3A65, P.O. Box 357031, San Diego CA 92135-7031.

DESTRUCTION NOTICE – For unclassified, limited documents, destroy by any method that will prevent disclosure of contents or reconstruction of the document.

DEPARTMENTS OF THE ARMY AND THE NAVY

15 SEPTEMBER 2001

Preventive Maintenance Checks and Services, page 2-3

Introduction, page 1-1

Equipment Description and Data, page 1-7

Image Intensifier Inspection Criteria, page 2-6

AVUM Troubleshooting, page 2-22

AVUM Maintenance Procedures, page 2-46

AVIM Servicing, page 3-3

AVIM Troubleshooting, page 3-13

AVIM Maintenance Procedures, page 3-19

TM 11-5855-263-23&P • NAVAIR 16-35AVS-5

C 1

Change HEADQUARTERS, DEPARTMENTS OF THE ARMY AND NAVY

No. 1 Washington, DC, 1 March 2003

Aviation Unit And Intermediate Maintenance Manual Including Repair Parts and Special Tools

AVIATOR’S NIGHT VISION IMAGING SYSTEM (ANVIS)

AN/AVS-6(V)1

(NSN 5855-01-138-4749) (EIC: IPR)

AN/AVS-6(V)2

(NSN 5855-01-138-4748) (EIC: IPQ)

AN/AVS-6(V)1A

(NSN 5855-01-439-1745) (EIC: IPW)

AN/AVS-6(V)1B

(NSN 5855-01-439-1744) (EIC: N/A)

TM 11-5855-263-23&P, 15 September 2001, is changed as follows:

1. Remove old pages and insert new pages as indicated below. New or changed material is indicated by a vertical bar in the margin of the page. Added or revised illustrations are indicated by a vertical bar adjacent to the illustration caption.

Remove Pages Insert Pages

None A and B a through f a through f 1-5 and 1-6 1-5 and 1-6 1-11 through 1-14 1-11 through 1-14 1-18 and 1-19 blank 1-18 and 1-19 blank 2-3 through 2-8 2-3 through 2-8 2-21 through 2-24 2-21 through 2-24 2-39 through 2-44 2-39 through 2-44 3-9 through 3-12 3-9 through 3-12 3-41 and 3-42 3-41 and 3-42 3-47 and 3-48 3-47 and 3-48 3-55 and 3-56 3-55 and 3-56 3-59 through 3-62 3-59 through 3-62 3-65 and 3-66 3-65 and 3-66 3-87 through 3-90 3-87 through 3-90 A-1 and A-2 A-1 and A-2 B-7 and B-8 B-7 and B-8 C-3 and C-4 C-3 and C-4 D-1 and D-2 D-1 and D-2 E-1 and E-2 E-1 and E-2 Glossary-3 and Glossary–4 Glossary-3 and Glossary-4

2. File this change sheet in front of the publication for reference purposes.

Distribution authorized to US Government agencies and their contractors for official use or for administrative or operational purposes only. This determination was made on 17 July 1991.

Other requests for this document must be referred to Commander, US Army Communications- Electronics Command and Fort Monmouth, ATTN: AMSEL-LC-LEO-E-ED-P, Fort Monmouth, New Jersey 07703-5000.

DESTRUCTION NOTICE -- Destroy by any method that will prevent disclosure of contents or reconstruction of the document.

A

By Order of the Secretary of the Army:

ERIC K. SHINSEKI

General, United States Army Official: Chief of Staff

0301608

DISTRIBUTION:

To be distributed in accordance with the initial distribution number (IDN) 369082 requirements for TM 11-5855-263-23&P.

TM11-5855-263-23&P•NAVAIR16-35AVS-5

B

INSERT LATEST CHANGED PAGES. DESTROY SUPERSEDED PAGES.

LIST OF EFFECTIVE PAGES

NOTE: The portion of the text affected by changes is indicated by vertical lines in the outer margin of the page. Changes to illustrations are indicated by miniature pointing hands.

Changes to wiring diagrams are indicated by shaded areas.

Dates of issue for original and changed pages are:

Original ...................0 ............15 September 2001 Change...................1 ..................01 March 2003

TOTAL NUMBER OF PAGES IN THIS PUBLICATION IS 235, CONSISTING OF THE FOLLOWING:

Page No.

*Change No.

Page No.

*Change No.

Cover-1 Cover-2 Blank A/(B blank) a-f i – v 1-0 –1-4

1-5 1-6 – 1-10 1-11 – 1-14 1-15 – 1-17 1-18 – 1-19/ blank 2-1 – 2-3 2-4 – 2-6 2-7 2-8 2-9 – 2-21 2-22 – 2-23 2-24 – 2-38 2-39 – 2-40 2-41 2-42 – 2-44 2-45 – 2-49/ blank 3-1 – 3-8 3-9 3-10 3-11 3-12 – 3-40 3-41 3-42 – 3-47

3-48 3-49 – 3-54 3-55 3-56 – 3-58 3-59 – 3-60 3-61 3-62 3-63 – 3-64 3-65 3-66 – 3-86 3-87 3-88 – 3-89 3-90 A-1 A-2 B-1 – B-7 B-8 B-9/ blank C-1 – C-2 C-3 – C-4 C-5 – C-20 D-1 D-2 D-3/ blank E-1 E-2 – E-7/ blank Glossary-1 – Glossary-3 Glossary-4 Index-1 – Index-6

*Zero in this column indicates an original page.

Change 1

Change 1 a

WARNING AND CAUTION SUMMARY

WARNING

Only 1.5 Volt AA non-rechargeable alkaline and lithium batteries are authorized for use in ANVIS. Do not mix alkaline and lithium batteries within the same AA cartridge.

Toxic Material

The image-intensifier’s phosphor screen in each monocular contains toxic materials.

• A broken image intensifier assembly may be caused from damage to the binocular assembly, especially if the monocular housing is cracked by force.

• If an image intensifier assembly breaks, be extremely careful to avoid inhaling the phosphor screen material. Do not allow the material to come in contact with the mouth or open wounds on the skin.

• If the phosphor screen material contacts your skin, wash it off immediately with soap and water.

• If you inhale/swallow any phosphor screen material, drink a lot of water, induce vomiting, and seek medical attention as soon as possible.

Personnel Injury

Serious injury may result if the nitrogen tank valve breaks off due to tank upset. If the tank valve breaks, the tank can be propelled by the escaping gas and strike you or others.

Always secure the tank to an upright support before removing the tank valve guard and attaching the regulator valve to the tank.

It is crucial that the tube retainer is installed correctly. It is also critical that the notch in the image intensifier assembly engages the locating pin or key on the inside of the housing when the image intensifier is installed.

This alignment ensures the proper electrical contact between the housing and image intensifier assembly. On the silver image intensifiers, if the contacts do not align, the metallic housing will produce a short in the system’s electrical circuit. This will cause both image intensifiers to go out.

b Change 1

WARNING AND CAUTION SUMMARY - Continued

FIRST AID

For first aid or artificial respiration, see FM 21-11, First Aid for Soldiers.

Do not use the black plastic shell image intensifiers with the one-piece monocular housings (see Figure 3-36) because of missing EMI shielding which could result in system failure.

Keep the protective lens caps on the binocular when not in use.

Operate the ANVIS only under dark conditions.

Do not use acetone to clean the lenses or any component of the ANVIS.

If the ANVIS failed when the operator was using aircraft power and it did not recover when switched to battery power, do not attempt to troubleshoot that power pack with another binocular. Maintenance personnel must first troubleshoot the power pack with a voltmeter. Using that power pack again could damage another binocular due to a defective power pack that puts out excessive voltage.

Unit maintenance personnel are not authorized to open the ANVIS binocular.

The connector must go on correctly. If it is put on backwards, the binocular check will not work.

To prevent damage to the image intensifier tube, always remove the ANVIS goggle connector from the binocular being tested before removing the binocular from the test set.

CAUTION

CAUTION

CAUTION

CAUTION

CAUTION

Change 1 c

The TS-4348/UV test set is a delicate instrument. Exercise care not to overtighten or strip the threads on either the adapter or the body of the test set when installing or removing the adapter. Make sure to inspect the threads for damage.

If you do not hold the test set, it may fall off the end of the monocular.

While performing this test, do not remove the binocular from the test set unless the goggle connector is removed.

To prevent damage to the image intensifier tube, always turn the test set’s ON/OFF/POWER CHECK switch to OFF and remove the ANVIS goggle connector from the binocular before removing the binocular from the test set.

Do not use any adhesives or threadlocking compounds on the ANVIS mount or binocular.

Wipe off any excess thread-locking compound from plastic parts.

Do not attempt to adjust the eye-span distance by trying to pull the monoculars away from each other or push them together. Using force on the monoculars to make this adjustment will damage the adjusting mechanism inside the PAS. Use only the eye-span knob(s) to adjust the eye-span distance.

CAUTION

CAUTION

CAUTION

d Change 1

To prevent damage to the image intensifier tube, always remove the ANVIS goggle connector from the binocular being tested before removing the binocular from the test set.

There are different types of nitrogen available for AVIM personnel;

however, using the wrong type will render the ANVIS inoperable. Do not use oil-pumped nitrogen or the ANVIS will be coated with an oil film on the interior optic and component surfaces. Use only water-pumped nitrogen.

Do not overtighten the purge valve or you may damage the preformed packing.

Take precautions when backing out the purge valve so that the threads in the monocular housing will not be stripped. It may be necessary to work the purge valve in and out to remove it.

The flex circuit board is thin and flexible. Do not fold it sharply or fold it near a solder terminal.

Do not use any adhesive when setting the locking rings.

Do not use petroleum jelly to lubricate the preformed packing.

Do not get any fingerprints or lubrication on the lens surfaces of the cell.

The lens has a magnesium fluoride coating on its surface and is easily damaged. Clean the lens immediately with cotton-tipped applicators and either isopropyl alcohol for a glass lens or non-ammonia spray detergent for a plastic lens.

CAUTION

CAUTION

Change 1 e

Do not grease the threads on the inside of the eyepiece focus ring assembly or the threads on the outside of the monocular housing.

Do not get any grease on the threads on the outside of the monocular housing.

Do not use petroleum jelly to lubricate the preformed packing.

Do not lubricate the external threads on the monocular housing or the internal threads on the objective assembly.

Do not allow any lubrication to contaminate the lens surfaces of the cell.

However, If the lens becomes contaminated, use only isopropyl alcohol and cotton-tipped applicators to clean it by rubbing gently in a circular motion from the inside to the outside. The lens must be clean before proceeding.

Make sure that you do not cross-thread the focus ring and lens cell assembly when threading the components together.

Handle the image intensifier assembly carefully. Do not let the image intensifier drop on the workbench or the housing can crack.

Do not tilt the can while shooting air into the vent channel or propellant will spray out and contaminate the inside of the monocular.

CAUTION

f Change 1

WARNING AND CAUTION SUMMARY – Continued

Take care not to apply excessive force causing damage to the wires that connect the monoculars to the flex circuit board or bend the rod in the

PAS.

Do not touch any plastic component with the hot soldering iron.

Do not catch the flex circuit board on the edge of the eccentric shaft. If it does catch, rotating the eccentric shaft can bend the flex circuit board or pop it off the retainer pins.

Do not overtighten the setscrews or they will be stripped.

Do not overtighten the retaining nut or you may deform the eccentric shaft and cause the threaded stud and eye-span knob to bind.

Failure to perform the insert key(s) procedure correctly may lead to a system failure.

CAUTION

CAUTION

g/(h blank)

Do not overtighten the setscrews or they will be stripped.

Do not overtighten the retaining nut or you may deform the eccentric shaft and cause the threaded stud and eye-span knob to bind.

Failure to perform this procedure correctly may lead to a system failure.

To reinstall the insert keys, place the key with the single tab into the slot located on the metal base of the connector. Align the other end of the key (end with two tabs) on the spline located on the black plug. The spline must be aligned between the two tabs. Put the key with the beveled end into place. The beveled end must be placed on the black plug.

CAUTION

TM 11-5855-263-23&P •NAVAIR 16-35AVS-5

i

Technical Manual DEPARTMENTS OF THE ARMY No. 11-5855-263-23&P* AND THE NAVY Technical Manual Washington, DC No. NAVAIR 16-35AVS-5 15 September 2001

AVIATION UNIT AND INTERMEDIATE MAINTENANCE MANUAL

INCLUDING REPAIR PARTS AND SPECIAL TOOLS LIST

AVIATOR’S NIGHT VISION IMAGING SYSTEM

AN/AVS-6(V)1 (NSN 5855-01-138-4749) (EIC: IPR),

AN/AVS-6(V)2 (NSN 5855-01-138-4748) (EIC: IPQ),

AN/AVS-6(V)1A (NSN 5855-01-439-1745) (EIC: IPW),

AND

NAVY: AN/AVS-6(V)1B (NSN 5855-01-439-1744) (EIC: N/A)

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, U.S. Army Communications-Electronics Command and Fort Monmouth, ATTN: AMSEL-LC-LEO-D-SC-CFO, Fort Monmouth, New Jersey 07703-5006. The Fax number is 732-532-1413, DSN 992-1413. You may also email your recommendations to AMSEL-LC-LEO-PUBS-CHG@mail1.monmouth.army.mil.

For Navy, mail your OPNAV 4790/66 (Technical Publications Deficiency Report) to:

Commanding Officer, Naval Air Technical Data & Engineering Service Command, Code 3.3A65, P.O. Box 357031, San Diego CA 92135-7031 or Fax to 619-545-2276. OPNAV 4790/66 form is located in back of this manual.

TABLE OF CONTENTS

Paragraph Title Page

How to Use This Manual............................................................................... v

CHAPTER 1 INTRODUCTION ......................................................................................1-1

Section I General Information...................................................................................1-1 1-1 Scope ........................................................................................................1-1 1-2 Maintenance Forms, Records and Reports................................................1-1 1-3 Destruction of Army Materiel to Prevent Enemy Use .................................1-2 1-4 Preparation for Storage or Shipment .........................................................1-2 1-5 Official Nomenclature, Names, and Designations ......................................1-2 1-6 Reporting Equipment Improvement Recommendations (EIR)....................1-2 1-7 Warranty Information .................................................................................1-3 1-8 Corrosion Prevention and Control..............................................................1-7

*This manual supersedes TM 11-5855-263-23&P dated 15 May 1995.

ii

TABLE OF CONTENTS - Continued

Paragraph Title Page

Section II Equipment Description and Data .............................................................. 1-7 1-9 Equipment Characteristics, Capabilities, and Features ............................. 1-7

1-10 Location and Description of Major Components ........................................ 1-7 1-11 Differences Between Models..................................................................... 1-9 1-12 Equipment Data ...................................................................................... 1-13

Section III Principles of Operation............................................................................ 1-15 1-13 Mechanical Functions ............................................................................. 1-15 1-14 Optical Functions .................................................................................... 1-16 1-15 Electronic Circuit Function....................................................................... 1-17

CHAPTER 2 AVIATION UNIT MAINTENANCE INSTRUCTIONS.................................. 2-1

Section I Repair Parts, Tools, Special Tools, TMDE, and Support Equipment ......... 2-1 2-1 Common Tools and Equipment ................................................................. 2-1 2-2 Special Tools, TMDE, and Support Equipment ......................................... 2-2 2-3 Repair Parts .............................................................................................. 2-2

Section II Service Upon Receipt ............................................................................... 2-2 2-4 Site and Shelter Requirements.................................................................. 2-2 2-5 Service Upon Receipt of Materiel .............................................................. 2-2 2-6 Installation................................................................................................. 2-3

Section III Preventive Maintenance Checks and Services ......................................... 2-3 2-7 Preventive Maintenance Checks and Services (PMCS) Table .................. 2-3 2-8 Inspection Criteria for Image Intensifier Operation .................................... 2-6 2-9 Black Spot Check.................................................................................... 2-11

2-10 Distortion Check...................................................................................... 2-16

Section IV Troubleshooting ..................................................................................... 2-22 2-11 Troubleshooting Table ............................................................................ 2-22 2-12 Image Intensifier Tests Using the TS-3895A/UV ..................................... 2-24 2-13 Image Intensifier Tests Using the TS-4348/UV or ANV-20/20 .......................................................................................... 2-32 2-14 Objective Lens Infinity Focus Check........................................................ 2-37 2-15 Power Pack Test ..................................................................................... 2-39 2-16 Alternate Power Pack Test...................................................................... 2-42 2-17 Visor Mount Continuity Check ................................................................. 2-45

Section V Maintenance Procedures ....................................................................... 2-46 2-18 Removal and Replacement of the AN/AVS-6(V)1 Mount......................... 2-46 2-19 Removal and Replacement of the AN/AVS-6(V)2 Offset Mount .............. 2-46 2-20 Removal and Replacement of the AN/AVS-6(V)1A Mount ...................... 2-47 2-21 Removal and Replacement of the AN/AVS-6(V)1B Mount ...................... 2-47 2-22 Removal and Replacement of the Visor Link (On (V)1 Visor Only) .......... 2-48 2-23 Removal and Replacement of the Mount Lock-Release Button............... 2-48

Section VI Preparation for Storage and Shipment .................................................... 2-49 2-24 Packing the ANVIS.................................................................................. 2-49 iii

TABLE OF CONTENTS - Continued

Paragraph Title Page

CHAPTER 3 AVIATION INTERMEDIATE MAINTENANCE INSTRUCTIONS ................3-1

Section I Repair Parts, Tools, Special Tools, TMDE, and Support Equipment..........3-2 3-1 Common Tools and Equipment .................................................................3-2 3-2 Special Tools, TMDE, and Support Equipment ..........................................3-2 3-3 Repair Parts ..............................................................................................3-2

Section II Service Upon Receipt ................................................................................3-2 3-4 Site and Shelter Requirements ..................................................................3-2 3-5 Service Upon Receipt of Materiel...............................................................3-2

Section III Servicing ...................................................................................................3-3 3-6 Scope ........................................................................................................3-3 3-7 System Current Drain Test ........................................................................3-3 3-8 Collimation Check......................................................................................3-4 3-9 Purging......................................................................................................3-7

Section IV Troubleshooting ......................................................................................3-13 3-10 Troubleshooting Table .............................................................................3-13 3-11 Electrical Troubleshooting .......................................................................3-15

Section V Maintenance Procedures ........................................................................3-19 3-12 Setting the Objective Lens Infinity Focus .................................................3-19 3-13 Setting the Zero Diopter for 15 mm Eyepieces ........................................3-23 3-14 Setting the Zero Diopter for 25 mm Eyepieces ........................................3-28 3-15 Setting Collimation for 15 mm Eyepieces.................................................3-33 3-16 Setting Collimation for 25 mm Eyepieces.................................................3-38 3-17 Removal, Repair, and Replacement of the Eyepiece Assembly...............3-41 3-18 Removal, Repair, and Replacement of the Objective Assembly ..............3-48 3-19 Removal/Replacement of the Image Intensifier........................................3-54 3-20 Alternate Method for Removal/Replacement of the Image Intensifier.......3-62 3-21 Removal/Replacement of the Monocular Housing Assembly on

Single Eye-Span Knob Pivot and Adjustment Shelf ................................3-67 3-22 Removal/Replacement of the Monocular Housing Assembly on

Dual Eye-Span Knob Pivot and Adjustment Shelf ...................................3-77 3-23 Removal/Replacement of the Pivot and Adjustment Shelf ......................3-87 3-24 Repairing the Mount Plunger Contact Connections .................................3-88 3-25 Repairing the Helmet Mount Cable ..........................................................3-89 3-26 Painting ...................................................................................................3-91 3-27 Lubrication...............................................................................................3-91

Section VI Preparation for Storage and Shipment.....................................................3-91 3-28 Packing the ANVIS ..................................................................................3-91 3-29 Shipping the Image Intensifier Assemblies ..............................................3-91 iv

TABLE OF CONTENTS - Continued

Paragraph Title Page

APPENDIX A REFERENCES..........................................................................................A-1 A-1 Scope........................................................................................................A-1 A-2 Forms........................................................................................................A-1 A-3 Field Manuals............................................................................................A-1 A-4 Technical Manuals ....................................................................................A-1 A-5 Miscellaneous Publications .......................................................................A-2

APPENDIX B MAINTENANCE ALLOCATION CHART ...................................................B-1 Section I Introduction ...............................................................................................B-1

B-1 Aviation Maintenance Allocation Chart ......................................................B-1 B-2 Use of the Maintenance Allocation Chart, Section II..................................B-3 B-3 Maintenance Functions .............................................................................B-4 B-4 Column Entries .........................................................................................B-5 B-5 Explanation of Columns in Tools and Test Equipment Requirements, Section III ..................................................................................................B-6 B-6 Explanation of Columns in Remarks, Section IV .......................................B-6

Section II Maintenance Allocation Chart (Aviation)....................................................B-7 Section III Tools and Test Equipment Requirements .................................................B-8 Section IV Remarks ...................................................................................................B-9

APPENDIX C AVIATION UNIT AND INTERMEDIATE MAINTENANCE

REPAIR PARTS AND SPECIAL TOOLS LIST Figure Page

Section I Introduction ...............................................................................................C-1 C-1 Scope........................................................................................................C-1 C-2 General .....................................................................................................C-1 C-3 Explanation of Columns (Sections II & III) .................................................C-1 C-4 Explanation of Columns (Section IV) .........................................................C-4 C-5 Special Information ...................................................................................C-5 C-6 How to Locate Repair Parts ......................................................................C-5 C-7 Abbreviations ............................................................................................C-6

Section II Repair Parts List .......................................................................................C-8 Group 00 Aviator's Night Vision Imaging System, ANVIS.............................C-1.......C-9 Group 01 Binocular Assembly, AN/AVS-6 (V)1 series and AN/AVS-6 (V) 2 C-2.....C-11

Group 0101 Eyepiece Lens Assembly .............................................................C-3.....C-13 Group 0102 Cell Assembly, Optical Instrument................................................C-4.....C-15

Section III Special Tools List .........................................................................C-5.....C-17 Section IV Cross-Reference Indexes........................................................................C-18

APPENDIX D EXPENDABLE AND DURABLE ITEMS LIST............................................D-1 Section I Introduction ...............................................................................................D-1

D-1 Scope........................................................................................................D-1 D-2 Explanation of Columns ............................................................................D-1

Section II Expendable and Durable Items List...........................................................D-2

APPENDIX E ILLUSTRATED LIST OF MANUFACTURED ITEMS .................................E-1 Section I Introduction ...............................................................................................E-1 Section II Manufactured Items Part Number Index....................................................E-1

Section III Manufactured Items Illustrations................................................................E-2

GLOSSARY ...................................................................................................... Glossary-1 ALPHABETICAL INDEX ..........................................................................................................Index-1 v

HOW TO USE THIS MANUAL

• Usage

You must familiarize yourself with the entire maintenance procedure before beginning the maintenance task. Read and follow all warning and caution notices.

• Manual Overview

The contents of each chapter are listed at the beginning of the chapter. This listing includes the paragraph number, paragraph title and page number. Additional references to the contents of this manual can be found in the index at the back of the manual. This manual also contains the Repair Parts and Special Tools List (RPSTL) in Appendix C for ordering repair parts. Appendix C gives details for using the RPSTL.

• Special Feature

A locator is provided on the right-hand border of the front cover. This gives the location of the information most frequently used. To find the topic AVUM TROUBLESHOOTING, open the manual to the correct page by using the black tab on the side of the manual that lines up with the topic AVUM

TROUBLESHOOTING.

1-0

Figure 1-1. Aviator's Night Vision Imaging System.

TM 11-5855-263-23&P ••••NAVAIR 16-35AVS-5

1-1

CHAPTER 1

INTRODUCTION

Page Overview ............................................................................................................................................ 1-1 Scope ................................................................................................................................................. 1-1 Maintenance Forms, Records and Reports......................................................................................... 1-1 Destruction of Army Materiel to Prevent Enemy Use .......................................................................... 1-2 Preparation for Storage or Shipment................................................................................................... 1-2 Official Nomenclature, Names, and Designations ............................................................................... 1-2 Reporting Equipment Improvement Recommendations (EIR) ............................................................. 1-2 Warranty Information .......................................................................................................................... 1-3 Corrosion Prevention and Control....................................................................................................... 1-7 Equipment Characteristics, Capabilities, and Features ....................................................................... 1-7 Location and Description of Major Components.................................................................................. 1-7 Differences Between Models .............................................................................................................. 1-9 Equipment Data................................................................................................................................ 1-13 Mechanical Functions ....................................................................................................................... 1-15 Optical Functions.............................................................................................................................. 1-16 Electronic Circuit Function ................................................................................................................ 1-17

OVERVIEW

Chapter 1 of this technical manual is intended to give you information regarding the type of equipment, its characteristics, and the principles of operation that will help you maintain it properly.

Section I. General Information

1-1 SCOPE

a. Type of Manual: Aviation Unit and Intermediate Maintenance including the Repair Parts and Special Tools List (RPSTL).

b. Model Number and Equipment Name: AN/AVS-6(V)1, AN/AVS-6(V)1A, AN/AVS-6(V)1B and AN/AVS-6(V)2, Aviator’s Night Vision Imaging System (ANVIS).

c. Purpose of Equipment: The ANVIS is a self-contained night vision device that enables improved night vision using ambient light from the night sky (moon, stars, skyglow, etc.).

1-2 MAINTENANCE FORMS, RECORDS, AND REPORTS

Department of the Army forms and procedures used for equipment maintenance will be those prescribed in DA PAM 738-751, Functional Users Manual for the Army Maintenance Management System — Aviation (TAMMS-A) or AR 700-138, Army Logistics Readiness and Sustainability.

Refer to the latest issue of DA PAM 25-30 to determine whether there are new editions, changes, or additional publications or forms pertaining to this equipment.

NAVY ONLY: Department of the Navy forms and procedures used for equipment maintenance will be those prescribed in OPNAV 4790.2G, Naval Aviation Maintenance Program (NAMP).

1-2

1-3 DESTRUCTION OF ARMY MATERIEL TO PREVENT ENEMY USE

For procedures to destroy this equipment to prevent its use by the enemy, refer to TM 750-244-2, Procedures for Destruction of Electronic Materiel to Prevent Enemy Use (Electronics Command).

1-4 PREPARATION FOR STORAGE OR SHIPMENT

See Chapter 2, paragraph 2-24, for instruction regarding preparation for storage or shipment of the ANVIS and Chapter 3, paragraph 3-29 for packing and shipping the image intensifier assemblies.

1-5 OFFICIAL NOMENCLATURE, NAMES, AND DESIGNATIONS

Table 1-1 provides a cross reference of unofficial and official terms.

Table 1-1. Nomenclature Cross-Reference List.

COMMON NAME OFFICIAL NOMENCLATURE

Battery Pack Power Pack Assembly Cotton-tipped Applicator Applicator, Disposable, Wood, Cotton-tipped end Eye Loop Magnifier, Folding Tool Eye-Span Adjustment Knob Knob Image tube Image Intensifier, Night Vision Snap-Ring Pliers Pliers, Retaining Ring Spanner Wrench Wrench, Locking Ring Torque Driver Wrench, Torque COPS Clip on Power Source Objective Lens Assembly Cell Assembly, Optical Instrument

1-6 REPORTING EQUIPMENT IMPROVEMENT RECOMMENDATIONS (EIR)

If your ANVIS 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 your equipment. Let us know why you don’t like the design or performance. Put it on an SF 368, Product Quality Deficiency Report. Mail it to U. S. Army Communications-Electronics Command and Fort Monmouth, ATTN: AMSEL-LC-LEO-D-CS-CFO, Fort Monmouth, NJ 07703-5000. We will send you a reply.

NAVY ONLY: Mail to the Fleet Support Team (FST) (formerly CFA) NSWC CRANE (805B).

1-3

1-7 WARRANTY INFORMATION

ANVIS is warranted by the manufacturer to conform to design and manufacturing requirements, to remain free from defects in materials and workmanship, and to conform to performance specifications.

The warranty expiration date is printed on a label affixed to the end item and a separate label affixed to the image intensifier tube. The Direct Support (DS)/Intermediate maintenance level personnel make the determination of a warranty defect. If a warranty defect is detected, the product (either the end item or the image intensifier) is returned directly to the manufacturer for warranty service in accordance with applicable service (Army, Navy, and Marine Corps) procedures. Warranty defects may consist of the following:

• Image intensifier does not light up.

• Image tube fails the low light resolution and/or highlight resolution.

• Image intensifier exhibits any one, or more, of the operational defects described in “Inspection Criteria for Image Intensifier Operation” as defined in the Operator’s Maintenance Manual (such as, shading, edge glow, flashing, flickering or intermittent operation).

• Fails the electrical troubleshooting test.

• Obvious mechanical malfunction with no evidence of severe trauma that indicates customer damage.

The manufacturer will use the same list of criteria in verifying a defect covered by the warranty.

Figure 1-2. Warranty Expiration Label Location.

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1-7 WARRANTY INFORMATION – Continued

NOTE

This warranty does not cover any product that has been subject to misuse, neglect, accident, installation or maintenance in violation of the instructions in the Operator’s or Maintenance Technical Manuals. Also, a maintenance testing fee of $100.00 per image intensifier or $150.00 per end item will be charged to the appropriate activity for returns which are determined to have no evidence of a defect or have been subjected to misuse, neglect, etc. Therefore, all PMCS and troubleshooting procedures must be performed before determining that the end item or image intensifier requires warranty action.

a. Turn-in Procedures.

1 The pilot, after completing the PMCS and Troubleshooting, annotates the fault on DA Form 2404 (Army) or OPNAV Form 4790/138 (Navy), completes the appropriate blocks and turns the equipment into the unit maintainer (AVUM/ORG). The unit maintainer (AVUM/ORG) will perform all applicable PMCS and Troubleshooting before determining that the end item does not show any faults or must be sent to Intermediate maintenance (AVIM) for further maintenance actions. If it is determined that the end item needs Intermediate (AVIM) repair, the unit maintainer (AVUM/ORG) will annotate DA Form 2407 (Army), OPNAV Form 4790/60 (Navy/Marine Corps), and include this form with the end item and send it to appropriate Intermediate maintenance activity (AVIM). DA Pam 738-751 outlines distribution of copies.

2 The Intermediate maintenance activity (AVIM) performs all troubleshooting and maintenance procedures in accordance with the maintenance manual. If a defect is identified and the product is under warranty, per the warranty expiration date on the label, a warranty return is initiated.

NOTE

A newly fielded ANVIS that fails either the service upon initial receipt of material inspection or fails prior to the expiration of the warranty must be reported on a Product Quality Deficiency Report (PQDR), SF 368. The PQDR must be processed through the local CECOM AVIONICS LAR and transmitted to CDR, U.S. Army CECOM, ATTN: AMSEL-LC-LEO-D-CS- CFO, Fort Monmouth, NJ 07703-5000. This will ensure the unit submitting the PQDR will receive credit for that ANVIS. DA Pam 738-751 outlines distribution of copies.

NOTE

For units operating under SAMS, DA Form 5504 ( Maintenance Request) and 5504-1 (Maintenance Request Continuation Sheet) are the only forms used to file warranty claim actions. Do not use SF 368 to report Warranty Claims. DA Pam 738-751 outlines distribution of copies.

Change 1 1-5

1-7 WARRANTY INFORMATION - Continued

NAVY 0NLY: The item should be tagged using the DD Form 1577-2. An OPNAV 4790/60, VIDS/MAF shall be filled out which will include the nature of the defect, i.e., spots, flicker, edge glow, etc. and method used to determine type and extent of defect. A product quality deficiency report, message or form SF 368, should be filed for an IN-WARRANTY item to the FST: Commander, Code 805B-Bldg 3291 NAVSURFWARCENDIV, 300 Highway 361, Crane IN 47522-5001. No defective warranty items are to be shipped directly from the field to a contractor. If there are reoccurring problems for deficient out-of-warranty assemblies, an engineering investigation, in accordance with OPNAVINST 4790.2G, should be forwarded to the FST.

3 Activities should follow local procedures for shipping equipment to the manufacturer. DD Form 1149 (Requisition and Invoice/Shipping Document) will accompany all shipments to the manufacturer's factory. The manufacturer will prepare a new DD Form 1149 for return shipment to the relevant activity. DA Form 738-751 outlines distribution of copies.

b. Return Procedures. The manufacturer will repair and return all warranted equipment back to designated activities.

To determine the manufacturer of the item, check the identification plate for the manufacturer’s (MFR) CAGEC (Commercial and Government Entity Code).

CAGEC Manufacturer 13567 or 66868 ITT, Roanoke, VA 55311 or 51298 Litton, Tempe, AZ

(1) Voice Media (Telephone).

(a) For items manufactured by ITT (CAGEC 13567 or 66868): This is accomplished by calling ITT at 1-800-360-6054 during regular business hours 7:30 AM-11:30 AM and 12:30 PM-4:30 PM Eastern Standard (or Daylight Savings) Time, Monday through Friday. During non-business hours, voice mail will be operative which will direct the caller to leave name and complete commercial telephone number including appropriate area code or country/city code and a brief message. ITT will return calls within two business days. Using voice media, ITT may be able to offer on the spot suggestions to help solve a problem. If the problem cannot be resolved over the phone and the product is under warranty, ITT will provide the caller with a Return Authorization (RA) Number and appropriate shipping instructions.

(b) For items manufactured by Litton (CAGEC 55311 or 51298): This is accomplished by calling the Litton Customer Service Representative at 1-800-569-8478 during regular business hours 7:00 AM – 3:30 PM Mountain Standard Time, Monday through Friday. The Litton Customer Service Representative can also be reached at 602-303-8956 during regular business hours. During non-business hours, voice mail is available which will direct the caller to leave a name, complete commercial telephone number, to include area code or country and city codes, and a brief message.

Litton will return the call within two business days. Using voice media, Litton may be able to offer on-the-spot suggestions to solve a problem. If the problem cannot be addressed over the phone and the product is under warranty, Litton will provide the caller with a Return Goods Authorization (RGA) number and appropriate shipping instructions.

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1-7 WARRANTY INFORMATION - Continued

(2) Electronic Media (e-mail).

Because of the time zone differences, communication via e-mail may be used by any authorized customer. This procedure can be utilized 24 hours a day with e-mail access. Prepare an e-mail with the following information shown below and send it to:

Date:

Branch of Service:

UIC:

Direct Support/Intermediate Activity:

Address

Point of Contact:

Street and Number:

City:

State/Country:

Zip Code:

Commercial Telephone Number (include area code or country/city code):

Commercial FAX Number (include area code or country/city code):

E-mail Address:

Product Information:

Model:

Serial Number:

Reason for Return:

Data Required for E-mail and FAX Communication.

(a) For items manufactured by ITT (CAGEC 13567 or 66868): Send the message to ITT at nvwarranty@itt.com via the Internet. ITT will answer via a return message providing suggestions to help solve the problem or issue a (RA) Number.

(b) For items manufactured by Litton (CAGEC 55311 or 51298): Send the message to Litton at contractscs@littoneos.com via the Internet. Litton will respond via a return message providing either a suggestion to solve a specific problem or a (RGA) number.

(3) FAX Communication.

(a) For items manufactured by ITT (CAGEC 13567 or 66868): Send a fax with the same information as ITT requires for E-mail to ITT at FAX number 540-366-9015.

(b) For items manufactured by Litton (CAGEC 55311 or 51298): Send a fax with the same information, as Litton requires for E-mail to Litton at FAX number 602-966-9055. Litton will provide a response within two business days.

c. Repair Procedures. The manufacturer will repair and return all warranted equipment back to designated activities. An estimated cost of repair will be provided to the maintenance activity for those items that do not fall within warranty guidelines. The manufacturer will only accept written authorization from authorized personnel at DS/Intermediate maintenance activity prior to conducting repair.

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1-7 WARRANTY INFORMATION - Continued

1-8 CORROSION PREVENTION AND CONTROL

Corrosion prevention and control (CPC) of Army materiel is a continuing concern. It is important that any corrosion problems with this equipment be reported so that the problem can be corrected and improvements made to prevent the problem in future equipment.

While corrosion is typically associated with rusting metal, it can also include deterioration of other materials such as contacts, injection-molded plastic, and foam inserts in the case. Unusual cracking, softening, swelling, or breaking of these other materials may be a corrosion problem.

If a corrosion problem is identified, report it using Standard Form 368, Product Quality Deficiency Report. Use keywords such as “corrosion,” “rust,” “deterioration,” or “cracking” to ensure that the information is identified as a CPC problem. Submit the form to the address specified in DA Pam 738- 751.

NAVY ONLY: Submit the SF 368 form to the FST.

Section II. Equipment Description and Data

1-9 EQUIPMENT CHARACTERISTICS, CAPABILITIES, AND FEATURES

The ANVIS is a helmet-mounted passive binocular that provides the capability for pilots to fly in terrain flight modes at night. The binocular is powered by batteries or batteries and an on-board aircraft power converter. The system amplifies ambient light from sources such as the moon, stars, and sky glow so the viewed scene becomes clearly visible to the operator. A light-emitting diode (LED) indicator on the visor mount comes on or blinks if the battery voltage drops below safe limits. The binocular can be adjusted for the distance between the operator’s eyes, vertical distance, tilt, eye relief, diopter setting and focus. In addition, the binocular may be flipped up and stored away from the eyes in an emergency.

1-10 LOCATION AND DESCRIPTION OF MAJOR COMPONENTS

BINOCULAR ASSEMBLY (see Figure 1-3): Centered/Offset consists of two identical monoculars mounted under a pivot and adjustment shelf (PAS). The monoculars may be tilted, moved sideways (eye span), or back and forth (fore and aft).

Things to do to help speed up the return of your equipment:

1. Review your documents to make sure you have filled in all of the requested Information. Your documentation must clearly explain the problem(s) you are having with the equipment.

2. Double check that your return address is legible on all of your documents, as well as, the shipping package.

3. Make sure all of the documents, except your copies, are placed inside of the package before being returned.

4. Write the RA or RGA number on the outside of your package.

Failure to follow the above guidelines will result in a delay in the return of your equipment.

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1-10 LOCATION AND DESCRIPTION OF MAJOR COMPONENTS – Continued

PIVOT AND ADJUSTMENT SHELF (see Figure 1-3): Part of the AN/AVS-6(V)1 series. The Pivot and Adjustment Shelf (PAS) attaches to two monoculars and includes the fore-and-aft slide assembly. The PAS also includes the eye-span knob(s) and adjustment mechanism, the tilt lever and tilt mechanism, and a flexible printed circuit board. Electrical connections from the mount to the monoculars are provided by the PAS. See paragraph 1-11 for differences between original and later models.

OFFSET PIVOT AND ADJUSTMENT SHELF (see Figure 1-3): Part of the AN/AVS-6(V)2. The same as the PAS for the AN/AVS-6(V)1 series except the fore-and-aft slide assembly is offset to one side.

MONOCULAR ASSEMBLY (see Figure 1-3): Comprised of four major subassemblies — the objective lens assembly, monocular housing assembly, image intensifier assembly, (inside monocular housing), and eyepiece lens assembly. The monoculars attach to the pivot and adjustment shelf.

Figure 1-3. Binocular Assembly.

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1-10 LOCATION AND DESCRIPTION OF MAJOR COMPONENTS - Continued

OBJECTIVE LENS ASSEMBLY (see Figure 1-4): Collects the ambient night light and focuses it on the image intensifier assembly. It contains a lens cell, slotted adapter, focusing ring, preformed packing, wave washer, focus stop ring, and lock ring. Later versions include a Light Interference Filter (LIF) adapter and LIF on the lens cell.

MONOCULAR HOUSING (see Figure 1-4): Holds the image intensifier assembly and provides attaching threads for the objective and eyepiece lens assemblies. The monocular housing also provides electrical contact from the PAS to the image intensifier assembly.

IMAGE INTENSIFIER ASSEMBLY (see Figure 1-4): Amplifies the night light received from the objective lens assembly and sends the amplified image to the eyepiece lens assembly. The image intensifier assembly also contains contacts to provide electrical connection with the contacts in the monocular housing. This is a sealed unit. No adjustments are authorized. See paragraph 1-11 for differences between versions of the image intensifier assembly.

EYEPIECE LENS ASSEMBLY (see Figure 1-4): Focuses the image produced by the image intensifier assembly so it can be clearly viewed by the user and compensates for variations in eyesight. It contains the lens cell, preformed packing, eyepiece focus ring, and lock ring. See paragraph 1-11 for differences between versions of the eyepiece lens assembly.

Figure 1-4. Monocular Assembly Components.

1-11 DIFFERENCES BETWEEN MODELS

a. Binoculars. The ANVIS binoculars are identical except that the fore-and-aft slide assembly is offset on the PAS for the AN/AVS-6(V)2.

b. Eyepiece Lens Assemblies. Refer to Figure 1-5. There are two types of eyepieces. On earlier models of ANVIS you may find eyepieces with a smaller lens with 15 mm of eye relief and another later types on a larger diameter lens that provides 25 mm of eye relief. The 15 mm eyepiece can also be identified by a reference dot on the focus ring and diopter markings on the indicator plate.

The 25 mm eyepiece has the reference dot on the indicator plate and the diopter markings on the focus ring.

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1-11 DIFFERENCES BETWEEN MODELS - Continued

Never mix 15 mm and 25 mm eyepieces. In addition, some older 15 mm eyepieces were made using plastic lenses. Later 15 mm lens were made from glass. There is no difference in the mechanical function between these two 15 mm variations, however there is a weight difference — the glass eyepieces are heavier. If a plastic eyepiece lens assembly requires replacement, replace both eyepiece lens assemblies on the ANVIS.