Page 2 - Contacting Tektronix
Copyright © Tektronix, Inc. All rights reserved. Licensed software products are owned by Tektronix or its subsidiaries or suppliers, and are protected by national copyright laws and international treaty provisions. Tektronix products are covered by U.S. and foreign patents, issued and pending. Infor...
Page 5 - Table of Contents
DPO4000 Series Service Manual i Table of Contents General Safety Summary iii . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Service Safety Summary v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Environmental Considerations vii . . . . . . . . . . . ....
Page 6 - List of Tables
Table of Contents ii DPO4000 Series Service Manual List of Tables Table 4--1: External inspection check list 4--3 . . . . . . . . . . . . . . . . . . . . . . Table 4--2: Internal inspection check list 4--4 . . . . . . . . . . . . . . . . . . . . . . List of Figures Figure 2--1: DPO4000 series block ...
Page 7 - General Safety Summary; To Avoid Fire or
DPO4000 Series Service Manual iii General Safety Summary Review the following safety precautions to avoid injury and prevent damage tothis product or any products connected to it. To avoid potential hazards, use this product only as specified. Only qualified personnel should perform service procedur...
Page 8 - Terms in this Manual
General Safety Summary iv DPO4000 Series Service Manual These terms may appear in this manual: WARNING. Warning statements identify conditions or practices that could result in injury or loss of life. CAUTION. Caution statements identify conditions or practices that could result in damage to this pr...
Page 9 - Service Safety Summary
DPO4000 Series Service Manual v Service Safety Summary Only qualified personnel should perform service procedures. Read this Service Safety Summary and the General Safety Summary before performing any service procedures. Do Not Service Alone. Do not perform internal service or adjustments of this pr...
Page 11 - Environmental Considerations; Handling
DPO4000 Series Service Manual vii Environmental Considerations This section provides information about the environmental impact of theproduct. Observe the following guidelines when recycling an instrument or component: Equipment Recycling. Production of this equipment required the extraction and use...
Page 13 - Preface; Manual Conventions; Related Documentation; Modules
DPO4000 Series Service Manual ix Preface This Service manual provides information to troubleshoot, disassemble, andreplace parts on the DPO4000 Series Digital Phosphor Oscilloscopes. Manual Conventions This manual uses certain conventions that you should become familiar withbefore attempting service...
Page 15 - Operating Information
Page 19 - Theory of Operation
Page 21 - Block Diagrams
DPO4000 Series Service Manual 2- 1 Theory of Operation This chapter describes the electrical operation of the oscilloscope to the modulelevel. Figure 2--1 shows the oscilloscope module interconnections. Block Diagrams Power supply Main board Front panel Input ports forapplicationmodules Attenuator c...
Page 22 - Power Supply; Acquisition System
Theory of Operation 2- 2 DPO4000 Series Service Manual Power Supply The power supply converts AC line voltage to +12V to power all internalcircuits. I/O Board The I/O board contains USB ports, Compact Flash port, an Ethernet connector,TekLink, XGA Video, and a Trigger Out port. Main Board The main b...
Page 23 - Processor System
Theory of Operation DPO4000 Series Service Manual 2- 3 The processor system contains a 440EP Power PC microprocessor that controlsthe entire instrument. The processor system also contains FLASH ROM, systemRAM, and interfaces to USB ports and a Compact flash slot. The power converter receives +12V fr...
Page 25 - Adjustment Procedures
Page 27 - Required Equipment
DPO4000 Series Service Manual 3- 1 Adjustment Procedures This chapter contains the factory adjustment procedures for the DPO4000 seriesoscilloscopes. Only qualified personnel should perform adjustment procedures.Read the Service Safety Summary and the General Safety Summary before performing any ser...
Page 28 - Overview of the Adjustment Process
Adjustment Procedures 3- 2 DPO4000 Series Service Manual Overview of the Adjustment Process Before performing adjustment procedures, you must warm up the oscilloscope atleast ten minutes in an ambient temperature between 20 ° C and 30 ° C. Adjust- ments performed before warm-up or outside this tempe...
Page 29 - Factory Adjustment Procedure
Adjustment Procedures DPO4000 Series Service Manual 3- 3 Factory Adjustment Procedure To perform the factory adjustment procedure, do these steps: 1. Connect the oscilloscope to an AC power source. NOTE . You must connect the oscilloscope and the test equipment to the same AC power circuit. Connect ...
Page 31 - Maintenance
Page 33 - Preventing ESD; Inspection and Cleaning
DPO4000 Series Service Manual 4- 1 Maintenance This section contains the information needed to do periodic and correctivemaintenance on the oscilloscope as well as repackaging instructions if you needto return the oscilloscope to Tektronix for service. Preventing ESD Before servicing this product, r...
Page 34 - General Care
Maintenance 4- 2 DPO4000 Series Service Manual Preventive maintenance consists of visually inspecting and cleaning theoscilloscope and using general care when operating it. How often you do maintenance depends on the severity of the environment inwhich the oscilloscope is used. A proper time to perf...
Page 35 - Exterior Inspection
Maintenance DPO4000 Series Service Manual 4- 3 CAUTION. Avoid the use of chemical cleaning agents, which might damage the plastics used in this oscilloscope. Use only deionized water when cleaning themenu buttons or front-panel buttons. Use a 75% isopropyl alcohol solution as acleaner and rinse with...
Page 36 - Interior Inspection
Maintenance 4- 4 DPO4000 Series Service Manual To access the inside of the oscilloscope for inspection and cleaning, refer to the Removal Procedures in this section. Inspect the internal portions of the oscilloscope for damage and wear, usingTable 4--2 as a guide. Repair any defects immediately. If ...
Page 38 - Overview of Removal Procedures; List of Modules
Maintenance 4- 6 DPO4000 Series Service Manual Overview of Removal Procedures Refer to Figures 4--1 and 4--2 for the location of modules that you are removingor installing. If you are disassembling the instrument for cleaning, refer to the Inspection and Cleaning procedure on page 4--1 for instructi...
Page 40 - Removal Procedures
Maintenance 4- 8 DPO4000 Series Service Manual Front Panel assembly Main board I/O board assembly Side fans assembly Power supply assembly Inverter board assembly Displayassembly Front Case assembly Figure 4- 2: Locator for internal modules Removal Procedures These procedures assume you have access ...
Page 41 - Rear Case
Maintenance DPO4000 Series Service Manual 4- 9 CAUTION. To avoid damage to the front panel Standby/On switch assembly, do not set the Display module assembly on a work surface. Sliding the oscilloscopeover the edge of the work surface could break off the On/Standby switchassembly. Follow these steps...
Page 44 - Troubleshooting; Adjustment After Repair
Maintenance 4- 12 DPO4000 Series Service Manual Troubleshooting This section contains information and procedures to help you isolate a defectivemodule in a DPO4000 series oscilloscope. WARNING. Before doing this or any other procedure in this manual, read the General Safety Summary and Service Safet...
Page 45 - Troubleshooting Procedure
Maintenance DPO4000 Series Service Manual 4- 13 Troubleshooting Procedure Figures 4--3 through 4--5 are troubleshooting procedure flowcharts. Use them totroubleshoot an instrument failure. Begin with Figure 4--3. NOTE . Before performing the troubleshooting procedure, remove the instrument cabinet (...
Page 48 - Unpacking and Repacking Instructions; Unpacking
Maintenance 4- 16 DPO4000 Series Service Manual Unpacking and Repacking Instructions This section contains the information needed to unpack the oscilloscope andrepack it for shipment or storage. The oscilloscope and its standard accessories are carefully packed at the factoryin a shipping carton. If...
Page 49 - Mechanical Parts List
Page 51 - Parts Ordering Information; Part Number Revision
DPO4000 Series Service Manual 5- 1 Mechanical Parts List This chapter contains a list of the replaceable modules for the DPO4000 seriesoscilloscope. Use this list to identify and order replacement parts. Parts Ordering Information Replacement parts are available through your local Tektronix field of...
Page 52 - Using the Replaceable Parts List; Module Servicing
Mechanical Parts List 5- 2 DPO4000 Series Service Manual Modules can be serviced by selecting one of the following three options. Contactyour local Tektronix service center or representative for repair assistance. Module Exchange. In some cases you may exchange your module for a reman- ufactured mod...
Page 53 - Mfr. Code to Manufacturer
Mechanical Parts List DPO4000 Series Service Manual 5- 3 The table titled Manufacturers Cross Index shows codes, names, and addressesof manufacturers or vendors of components listed in the parts list. Manufacturers cross index Mfr.code Manufacturer Address City, state, zip code 06383 PANDUIT CORP 17...
Page 54 - Exploded Views
Mechanical Parts List 5- 4 DPO4000 Series Service Manual Figures 5--1 through 5--5 on the following pages show the module-levelexploded views of the DPO4000 series oscilloscope. The adjacent page is the listof components for that exploded view, indexed by the numbers in the figure. 1 2 3 4 4 5 Figur...
Page 65 - Index