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iv
1705A Spectrum Monitor
Short--Form Procedure 5--17................................................
Long Form Procedure 5--18................................................
Maintenance 6- -1..........................................
Section 6 Maintenance 6--1................................................
PREVENTIVE MAINTENANCE 6--1..........................................
Cleaning 6--1...........................................................
Visual Inspection 6--2....................................................
Static-- Sensitive Components 6 --2..........................................
Performance Checks and Readjustments 6--3..................................
TROUBLESHOOTING 6--3..................................................
Diagnostic Routines 6--4.....................................................
Memory T est 6--5.......................................................
DAC T est 6--7..........................................................
LED and Key Tests 6--8..................................................
Troubleshooting Aids 6--8....................................................
Foldout Pages 6--8.......................................................
Parts Lists 6--9..........................................................
Major Assembly Interconnection 6--10........................................
General Troubleshooting Techniques 6--10....................................
Power Supply Troubleshooting Procedure 6--12....................................
Introduction 6--12........................................................
Low Volts Supply 6--13....................................................
High Volts Supply 6--15...................................................
CORRECTIVE MAINTENANCE 6--18..........................................
Obtaining Replacement Parts 6--18..............................................
Test Selected Components 6--18.............................................
Mechanical Disassembly/Assembly 6--19.........................................
Bezel Removal 6--19......................................................
Graticule Light Removal and Replacement 6--20...............................
Removal of the CRT 6--21.................................................
Replacing the CRT 6--21...................................................
Removal of the Rear Panel 6--22............................................
Removal of Front--Panel Assembly 6--22......................................
Removing the L--Band Tuner 6--23..........................................
Removing the 70 MHz Tuner 6--24..........................................
Removal and Replacement of the Main Board 6--24.............................
Removal and Replacement of the Power Supply Board 6--25......................
Removing the LNB Power Supply Board 6--26.................................
REPACKAGING 6--27........................................................
Options
Section 7 Options 7--1....................................................
Options 7--1...............................................................
Field Upgrade Kits 7--1......................................................
ORDERING 7--2...........................................................