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![]() ![]() TM 9-6625-1753-14
C3
TECHNICAL MANUAL
HEADQUARTERS
Figures
Page
DEPARTMENT OF THE ARMY
Dual trace plug-in (type 79-02A with mod 103 and delay line),
No. 9-6625-1753-14
WASHINGTON, D. C., 4 April 1968
schematic .....................................................................................................
Delaying sweep plug-in, older version (type 74-13A with mod 101),
Operator, Organizational, DS, And GS
schematic ......................................................................................................
Maintenance Manual
Delaying sweep plug-in, newer version (type 74-13A with mod 101),
schematic .....................................................................................................
OPERATION AND MAINTENANCE INSTRUCTIONS FOR
OSCILLOSCOPES 765MH AND 765MA
SHIPMENT AND STORAGE AND DESTRUCTION OF
(PORTASCOPES)
MATERIEL TO PREVENT ENEMY USE
Shipment and storag e ....................................................................................... 7-1 - 7-4
Paragra phs
Page
Destruction of materiel to prevent enemy use .................................................... 7-5 - 7-8
INTRODUCTION
REFERENCES ................................................................................................................................ A-1
General ............................................................................................................
....................................................................................................................................................... I-1
Description and data ........................................................................................
OPERATING INSTRUCTIONS
Service upon receipt of materiel ........................................................................
Controls and indicators .....................................................................................
Operation under usual conditions ......................................................................
Check procedure ..............................................................................................
THEORY OF OPERATION
General theory ..................................................................................................
Functional theory-power supply .........................................................................
Functional theory-dual trace plug-in type 76-02A (Y-deflection) ...........................
Functional theory-dual trace plug-in 79-02A and CRT termina-
tion network ..................................................................................................
Functional theory-delaying sweep plug-in type 74-13A
(X-deflection) .................................................................................................
Functional theory-delaying sweep plug-in 74-13A (X-
deflection), newer model ................................................................................
BLOCK DIAGRAMS AND FUNCTIONAL SCHEMATICS .....................................
Figures
Page
Power supply block diagram .............................................................................
Oscilloscope, block diagram ..............................................................................
Power supply, functional schematic ...................................................................
Dual trace plug-in (type 76-02A), functional schematic .......................................
Dual trace plug-in (type 7902A) block diagram ....................................................
Y channel amplification using dual trace plug-in 79-02A.
functional schematic ......................................................................................
Delaying sweep plug-in (type 74-13A), functional schematic ...............................
MAINTENANCE INSTRUCTIONS ......................................................................
Paragraphs
Page
Repair parts, tools, and equipment ..................................................................
Preventive maintenance ....................................................................................
Troubleshooting................................................................................................
Corrective Maintenance ....................................................................................
SCHEMATICS ..................................................................................................
Figures
Page
Main frame, oscilloscope 765MH with mod 116, schematic .................................
Main frame; low voltage power supplies, 765MH (newer), 765MH/F and
765MA, schematic .........................................................................................
Main frame; CRT and high voltage circuits, 765MH (newer) and
765MH/F, schematic .....................................................................................
Main frame; CRT and high voltage circuits, 765MA, schematic ...........................
Dual trace plug-in (type 76-02A with mod 101 and delay line),
schematic .....................................................................................................
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