Instruction manual

Table of Contents
1720/1721
iii
Microprocessor 4--15......................................................
DIAGRAM 6 CONTROL CIRCUIT 4--17........................................
Z-Axis Control 4--18......................................................
Trace Rotation 4--18......................................................
Graticule Illumination 4--18................................................
Post Regulators 4--18.....................................................
DIAGRAM 7 LOW VOLTAGE POWER SUPPLY 4--19.............................
Line Rectifier and Filter 4--19..............................................
Pulse Width Modulator 4--20...............................................
Output Filters 4--21.......................................................
Error Amplifier 4--21.....................................................
Feedback Transformer Driver and Peak Detector 4--21...........................
Output HV Shutdown 4--21.................................................
DIAGRAM 8 HIGH VOLTAGE POWER SUPPLY 4--22............................
HV Osc and Error Amp 4--22...............................................
Power Supply Outputs 4--23................................................
Focus Amplifier 4 --23.....................................................
Grid Drive Circuit 4--23...................................................
Z-Axis Amplifier 4--23....................................................
Section 5 Checks and Adjustments 5-- 1.........................................
Recommended Equipment List 5--1.............................................
Electrical Instruments 5 -- 1................................................
Auxiliary Equipment 5 --3.....................................................
Performance Che ck Procedure Short-Form Refere nce 5--5...........................
Performance Check Procedure 5--6.............................................
Adjustment Procedure 5--17....................................................
Signal Connections 5--18..................................................
Adjustment Procedure Short-Form Reference 5--19.................................
Long-Form Adjustm ent Procedure 5--20..........................................
Section 6 Maintenance 6--1....................................................
Preventive Maintenance 6--1..................................................
Cleaning 6--1...........................................................
Visual Inspection 6--2....................................................
Static-Sensitive Component s 6--2...........................................
Performance Checks and Readjustments 6--3..................................
Troubleshooting 6--4........................................................
Foldout Pages 6--4.......................................................
Parts L ists 6--5..........................................................
Major Assembly Int erconnection 6--5........................................
General Troubleshooting Techniques 6--6....................................
Specific Trouble shooting Procedure s 6--8........................................
Power Supply 6--8.......................................................
Troubleshooting Procedure 6--8............................................
Introduction 6--8........................................................
Low Volts Supply 6--9....................................................
High Volts Supply 6--12...................................................
Serial Port and L ED Driver Diagnostics 6--14..................................
Corrective Maintenance 6--15..................................................
Obtaining Replacement Parts 6--15..........................................
Mechanical Disassembly/Assembly 6--15.........................................