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WARNINGS		Up
TM-11-6760-238-34 Test Set Control Panel Focal Plane Shutter LS-78A Manual		Next
LIST OF ILLUSTRATIONS

TM 1 16760-238-34
}
TECHNICAL MANUAL
HEADQUARTERS
DEPARTMENT OF THE ARMY
WASHINGTON, DC, 20 February 1980
No 11-6760-238-34
DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL:
TEST SET, CONTROL PANEL, FOCAL PLANE SHUTTER
LS-78A
(NSN 6760-00-878-0592)
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 and
Electronics Materiel Readiness Command, ATTN: DRSEL-ME-MQ Fort Monmouth, NJ 07703.
In any case a reply will be furnished direct to you.
Paragraph
Page
CHAPTER
1.
INTRODUCTION
Scope ........................................................................................................................................
1-1
1-1
Indexes of publications .................................................................................................................
1-2
1-1
Reporting equipment improvement recommendations (EIR) .......................................................
1-3
1-1
Calibration ....................................................................................................................................
1-4
1-1
Shutter test set component list ....................................................................................................
1-5
1-1
2.  PRINCIPLES OF OPERATION
Shutter test block diagram analvsis .............................................................................................
2-1
2-1
Shutter test set circuit analysis .....................................................................................................
2-2
2-1
3.  DIRECT SUPPORT MAINTENANCE
Section
I.  Direct support troubleshooting
General instructions .....................................................................................................................
3-1
3-1
Organization of direct support troubleshooting procedures .........................................................
3-2
3-1
Test equipment and tools required ...............................................................................................
3-3
3-1
Expendable supplies and materials .............................................................................................
3-4
3-2
Operational check ........................................................................................................................
3-5
3-2
Direct support troubleshooting procedures ..................................................................................
3-6
3-4
II.  Direct support repair procedures and adjustments
General parts replacement techniques ........................................................................................
3-7
3-7
Direct support disassembly/assembly procedures. ......................................................................
3-8
3-7
DS3, DS4, or DS5, light source focus adjustment .......................................................................
3-9
3-9
Cleaning of mechanical parts, electrical contacts, and lenses .....................................................
3-10
3-10
Direct support repair procedures ..................................................................................................
3-11
3-11
Liquid staking ...............................................................................................................................
3-12
3-11
CHAPTER  4.  GENERAL SUPPORT MAINTENANCE
General support troubleshooting Tools and test equipment required for general support troubleshoot-
ing......................................................................................................................................
4-1
4-1
Organization of general support troubleshooting procedures ......................................................
4-2
4-1
General support troubleshoo ting procedures ...............................................................................
4-3
4-1
Signal substitution ........................................................................................................................
4-4
4-2
Section
II.  General support repair procedures
General ........................................................................................................................................
4-5
4-3
General support disassembly/assembly procedures. ..................................................................
4-6
4-3
Disassembly and reassembly of bridge assembly A10 ................................................................ ..  4-7
4-5
Dlsassembly/reassembly of shutter holding fixture ......................................................................
4-8
4-5
III. Adjustments
General ........................................................................................................................................
4-9
4-8
Variable resistor A8R6 adjustment ...............................................................................................
4-10
4-8
Bridge assembly A10 razor blade adjustment. .............................................................................
4-11
4-8
APPENDIX  A.  REFERENCES.............................................................................................................................
A-1
B.  EXPENDABLE SUPPLIES AND MATERIALS LIST
Section
I.  Introduction
Scope ..........................................................................................................................................
B-1
B-1
i

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