Tableof Contents

iv 1705A Spectrum Monitor

Short--FormProcedure 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..........................................
PerformanceChecks and Readjustments 6--3..................................
TROUBLESHOOTING 6--3..................................................
Diagnostic Routines 6--4.....................................................
Memory Test 6--5.......................................................
DAC Test 6--7..........................................................
LEDand Key Tests 6--8..................................................
Troubleshooting Aids 6--8....................................................
Foldout Pages 6--8.......................................................
PartsLists 6--9..........................................................
MajorAssembly Interconnection 6--10........................................
General Troubleshooting Techniques 6--10....................................
Power Supply Troubleshooting Procedure 6--12....................................
Introduction 6--12........................................................
Low VoltsSupply 6 --13....................................................
High VoltsSupply 6--15...................................................
CORRECTIVE MAINTENANCE 6--18..........................................
ObtainingReplacement Parts 6--18..............................................
TestSelec ted Components 6--18.............................................
MechanicalDisassembly/Assembly 6--19.........................................
Bezel Removal 6 --19......................................................
GraticuleLight 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--PanelAssembly 6--22......................................
Removing the L--BandTuner 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...........................................................