Tektronix TDS5000B Series User manual

Service Manual
TDS5000B Series
Digital Phosphor Oscilloscopes
071-1362-00
This document applies to firmware version 1.00
and above.
Warning
The servicing instructions are for use by qualified
personnel only. To avoid personal injury, do not
perform any servicing unless you are qualified to
do so. Refer to all safety summaries prior to
performing service.
www.tektronix.com

Copyright ©Tektronix, Inc. All rights reserved.
Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supercedes
that in all previously published material. Specifications and price change privileges reserved.
Tektronix, Inc., P.O. Box 500, Beaverton, OR 97077
TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.

WARRANTY
Tektronix warrants that the products that it manufactures and sells will be free from defects in materials and
workmanship for a period of one (1) year from the date of shipment. If this product proves defective during its
warranty period, Tektronix, at its option, will either repair the defective product without charge for parts and labor,
or provide a replacement in exchange for the defective product.
This warranty applies only to products returned to the designated Tektronix depot or the Tektronix authorized
representative from which the product was originally purchased. For products returned to other locations,
Customer will be assessed an applicable service charge. The preceding limitation shall not apply within the
European Economic Area, where products may be returned for warranty service to the nearest designated service
depot regardless of the place of purchase.
In order to obtain service under this warranty, Customer must provide the applicable office of Tektronix or its
authorized representative with notice of the defect before the expiration of the warranty period and make suitable
arrangements for the performance of service. Customer shall be responsible for packaging and shipping the
defective product to the service center designated by Tektronix or its representative, with shipping charges
prepaid. Tektronix or its representative shall pay for the return of the product to Customer. Customer shall be
responsible for paying any associated taxes or duties.
This warranty shall not apply to any defect, failure or damage caused by improper use or improper or inadequate
maintenance and care. Tektronix shall not be obligated to furnish service under this warranty:
a) to repair damage resulting from attempts by personnel other than Tektronix representatives to install, repair or
service the product;
b) to repair damage resulting from improper use or connection to incompatible equipment;
c) to repair any damage or malfunction caused by the use of non-Tektronix supplies or consumables;
d) to repair a product that has been modified or integrated with other products when the effect of such
modification or integration increases the time or difficulty of servicing the product; or
e) to repair damage or malfunction resulting from failure to perform user maintenance and cleaning at the
frequency and as prescribed in the user manual (if applicable).
THE ABOVE WARRANTIES ARE GIVEN BY TEKTRONIX WITH RESPECT TO THIS PRODUCT IN LIEU OF
ANY OTHER WARRANTIES, EXPRESS OR IMPLIED. TEKTRONIX AND ITS VENDORS DISCLAIM ANY
IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. TEKTRONIX’
RESPONSIBILITY TO REPAIR OR REPLACE DEFECTIVE PRODUCTS IS THE SOLE AND EXCLUSIVE
REMEDY PROVIDED TO THE CUSTOMER FOR BREACH OF THIS WARRANTY. TEKTRONIX AND ITS
VENDORS WILL NOT BE LIABLE FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
DAMAGES IRRESPECTIVE OF WHETHER TEKTRONIX OR THE VENDOR HAS ADVANCE NOTICE OF THE
POSSIBILITY OF SUCH DAMAGES.

TDS5000B Series Service Manual i
Table of Contents
General Safety Summary vii...................................
Service Safety Summary ix....................................
Preface xi...................................................
Manual Structure xi................................................
Manual Conventions xi..............................................
Related Documentation xii...........................................
Contacting Tektronix xii.............................................
Specifications
Operating Information
Installation 2--1.....................................................
Before You Start 2--1.............................................
Environmental Considerations 2--1..................................
Connect the Peripherals 2--2........................................
Power On the Instrument 2--4.......................................
Powering Off the Oscilloscope 2--4..................................
Create an Emergency Startup Disk 2--4...............................
Software Installation 2--5..........................................
Operating Information 2--6............................................
Back Up User Files 2--6...........................................
User Interface Map 2--7...........................................
Front Panel I/O Map 2--8..........................................
Rear Panel I/O Map 2--8...........................................
Front Panel Controls Map 2--9......................................
Instrument Diagnostics 2--10........................................
Signal Path Compensation 2--10.....................................
Using the Online Help 2--11.........................................
Theory of Operation
Logic Conventions 3--1...............................................
Module Overviews 3--1...............................................

Table of Contents
ii TDS5000B Series Service Manual
General 3--1....................................................
Input Signal Path 3--1.............................................
Display Panel 3--1................................................
Front Panel 3--2..................................................
Side Panels 3--3..................................................
Power Supply 3--3................................................
Fans 3--3.......................................................
Printer 3--3.....................................................
Performance Verification
Calibration Procedure
Calibration Interval 5--1...........................................
Calibration Environment 5--1.......................................
Calibration Dependencies 5--1......................................
Calibration After Repair 5--1.......................................
Required Equipment 5--2..........................................
Overview of the Procedure 5--3.........................................
Instrumentation Setup 5--3.............................................
Calibration Program Installation and Execution 5--5........................
Calibration Program Operation 5--5.....................................
Commands 5--7...............................................
Calibration Command Group 5--7.......................................
Diagnostics Command Group 5--19......................................
Sample Calibration Program 5--37................................
Overview 5--37.......................................................
Listing 5--37.........................................................
Maintenance
Preventing ESD 6--1.................................................
Inspection and Cleaning 6--2...........................................
General Care 6--2................................................
Interior Cleaning 6--2.............................................
Exterior Cleaning 6--2............................................
Removal and Installation Procedures 6--7.........................
Preparation 6--7.....................................................
Procedures for External Modules 6--9....................................
Procedures for Modules 6--21...........................................
PC Interface Board and Motherboard Cable Connections 6--32.................
Troubleshooting 6--49...........................................
Service Level 6--49...................................................
Check for Common Problems 6--49......................................
Equipment Required 6--51..............................................
Fault Isolation Procedure 6--51..........................................
PC Interface and PC Motherboard Diagnostics 6--56.........................
Firmware Updates 6--59................................................
After Repair 6--59....................................................
BIOS Error Messages 6--60.............................................
BIOS Beep Codes 6--62................................................
PC Interface LEDs 6--62...............................................

Table of Contents
TDS5000B Series Service Manual iii
Troubleshooting Using Reset Circuits 6--63................................
Installing the PC Motherboard Serial Number 6--65..........................
Update/Restore the PC Motherboard CMOS 6--66...........................
Installing an Authorization Key 6--66.....................................
Hard Disk Drive Maintenance 6--66......................................
Repackaging Instructions 6--69...................................
Packaging 6--69......................................................
Shipping to the Service Center 6--69......................................
Options and Accessories
Options 7--1........................................................
Accessories 7--3.....................................................
Electrical Parts List
Diagrams
Symbols 9--1.......................................................
Mechanical Parts List
Parts Ordering Information 10--1.........................................
Module Servicing 10--1............................................
Using the Replaceable Parts List 10--2....................................
Abbreviations 10--2...............................................
Mfr. Code to Manufacturer Cross Index 10--3...........................

Table of Contents
iv TDS5000B Series Service Manual
List of Figures
Figure 2--1: Locations of peripheral connectors on the side panel 2--3..
Figure 2--2: On/Standby switch location 2--4.......................
Figure 2--3: User interface 2--7...................................
Figure 2--4: Locations of input/output connectors on the front panel 2--8
Figure 2--5: Locations of connectors on the rear panel 2--8...........
Figure 2--6: Front panel controls 2--9.............................
Figure 5--1: Calibration setup 5--3................................
Figure 6--1: Knob removal 6--10..................................
Figure 6--2: Trim removal 6--13...................................
Figure 6--3: Bottom cover removal 6--14............................
Figure 6--4: Right-side cover removal 6--16.........................
Figure 6--5: Printer frame removal 6--18...........................
Figure 6--6: Internal modules 6--19................................
Figure 6--7: Front panel assembly removal 6--22.....................
Figure 6--8: J1 flex cable connector removal 6--23....................
Figure 6--9: Front panel board and keyboard removal 6--24...........
Figure 6--10: Display removal 6--26................................
Figure 6--11: Touch panel and Display assembly removal 6--27.........
Figure 6--12: Display adapter board removal 6--28...................
Figure 6--13: Power flex circuit removal 6--29.......................
Figure 6--14: Floppy disk drive assembly removal 6--30...............
Figure 6--15: Floppy disk drive removal 6--31.......................
Figure 6--16: PC Interface board and motherboard cable
connections 6--32............................................
Figure 6--17: Desktop hard drive removal 6--34......................
Figure 6--18: Removing the CDRW drive from the bracket 6--36.......
Figure 6--19: CDRW drive assembly removal 6--37...................
Figure 6--20: Fan fastener removal 6--39...........................
Figure 6--21: Disconnecting the fan cables 6--40.....................
Figure 6--22: Power supply removal 6--41...........................
Figure 6--23: Motherboard removal 6--44...........................
Figure 6--24: PC interface board removal 6--46......................
Figure 6--25: Acquisition circuit board removal 6--48.................
Figure 6--26: Primary troubleshooting tree 6--52.....................

Table of Contents
TDS5000B Series Service Manual v
Figure 6--27: Location of jumpers and reset button 6--53..............
Figure 6--28: The PCI busses 6--63................................
Figure 6--29: Location of jumpers and reset button 6--63..............
Figure 6--30: PCI and AGP video connectors 6--65...................
Figure 9--1: TDS5000B series block diagram 9--2...................
Figure 10--1: External parts 10--6.................................
Figure 10--2: Inner panels 10--8...................................
Figure 10--3: Modules 10--10......................................
Figure 10--4: Drives 10--12........................................
Figure 10--5: Acquisition assembly 10--14............................
Figure 10--6: Accessories 10--15....................................

Table of Contents
vi TDS5000B Series Service Manual
List of Tables
Table 2--1: Additional accessory connection information 2--2.........
Table 5--1: Calibration required for module replaced 5--1...........
Table 5--2: Required equipment and materials 5--2.................
Table 5--3: GPIB devices required by test program 5--5.............
Table 5--4: CALibrate commands 5--7............................
Table 5--5: DIAgnostic Commands 5--19............................
Table 6--1: External inspection check list 6--3......................
Table 6--2: Internal inspection check list 6--4......................
Table 6--3: Tools required for module removal 6--8.................
Table 6--4: Failure symptoms and possible causes 6--49...............
Table 6--5: Power supply voltages 6--54............................
Table 6--6: Acquisition board voltages 6--54........................
Table 6--7: Power-on diagnostic tests 6--56.........................
Table 6--8: Action required for module replaced 6--59................
Table 6--9: BIOS Error messages 6--60............................
Table 6--10: Beep codes 6--62.....................................
Table 7--1: Instrument options 7--1...............................
Table 7--2: Instrument upgrades 7--2.............................
Table 7--3: Standard accessories 7--3.............................
Table 7--4: Optional accessories 7--4..............................