vi Table of Contents
Maintenance
6.1 Introduction 6-1
6.1.1 Safety Precautions 6-1
6.1.2 Antistatic Precautions 6-1
6.2 Disassembly and Assembly Procedure 6-2
6.2.1 Disassembly Procedure 6-2
6.2.1.a Removal of the Front Bezel 6-2
6.2.1.b Removal of the Upper Cover Assembly 6-2
6.2.1.c Removal of the Front Frame with Color Monitor 6-3
6.2.1.d Removal of the Processor Board 6-3
6.2.1.e Removal of the Power Supply Assembly 6-3
6.2.1.f Removal of the Upper Shield Assembly 6-4
6.2.1.g Removal of the Rear Panel Assembly 6-4
6.2.1.h Removal of the Main Board Assembly 6-4
6.2.2 Assembly Procedure 6-5
6.3 Software Update Procedure 6-6
6.3.1 Upgrading Firmware 6-6
6.3.1.a Performing the Update from GPIB 6-6
6.3.1.b Performing the Update from RS232 6-7
6.3.1.c Performing the Update from Floppy 6-8
6.3.2 Software Options 6-8
6.3.2.1 Changing Software Option Key 6-9
6.3.2.1.a Scope ID, Scope Serial Number 6-9
6.3.2.1.b Entering Option Key 6-9
6.3.3 Processor Board Exchange Procedure 6-9
6.4 Equipment and Spare Parts Recommended for Service 6-10
6.4.1 Test Equipment Required 6-10
6.4.2 Spare Parts Recommended for Service 6-10
6.5 Calibration Procedures 6-10
6.5.1 Power Supply Calibration Procedure 6-11
6.6 Troubleshooting and Flow Charts 6-12
6.6.1 Introduction 6-12
6.6.2 Line Fuses Replacement 6-12
6.6.3 Initial Troubleshooting Chart 6-12
6.6.4 Fan Problem 6-14
6.6.5 Power Supply Voltages Problem 6-15
6.6.6 Display Problem 6-16
6.6.7 Front Panel Controls Do not Operate 6-17
6.6.8 Remote Control GPIB & RS232 Problem 6-18
6.6.9 Performance Verification Fails 6-19
6.6.10 Floppy Disk Drive Problem 6-20
6.6.11 Graphic Printer Problem 6-21
6.6.12 Centronics Problem 6-22
6.6.13 Hard Disk Drive Problem 6-23
