Tektronix TBS2000 Series Service Manual
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Tektronix TBS2000 Series Service Manual

Tektronix TBS2000 Series Service Manual

Digital storage oscilloscopes
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TBS2000 Series
Digital Storage Oscilloscopes
ZZZ
Service Manual
*P077115000*
077-1150-00

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Summary of Contents for Tektronix TBS2000 Series

  • Page 1 TBS2000 Series Digital Storage Oscilloscopes Service Manual *P077115000* 077-1150-00...
  • Page 3 TBS2000 Series Digital Storage Oscilloscopes Service Manual 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 before performing service.
  • Page 4 Copyright © Tektronix. 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. Information in this publication supersedes that in all previously published material.

  • Page 5: Table Of Contents

    Inspection and cleaning ..................Module removal....................Troubleshooting....................Troubleshooting procedure ................. Unpacking and repacking instructions ..............4-10 Replaceable parts list Replaceable parts list..................... Parts ordering information .................. Using the replaceable parts list ................The replaceable parts list..................TBS2000 Series Service Manual...
  • Page 6 Figure 4-3: Board isolation troubleshooting flowchart ............Figure 5-1: Four channel models; front half..............Figure 5-2: Four channel models; rear half..............Figure 5-3: Two channel models; front half ..............Figure 5-4: Two channel models; rear half ..............TBS2000 Series Service Manual...
  • Page 7 Table 5-2: Four-channel model parts: inputs, main board, power supply, I/O, rear chassis, rear cover Table 5-3: Two channel model parts; front panel, labels, front panel, LCD, chassis ..... Table 5-4: Two channel model parts; power supply, main board, AC connector/filter, rear cover ..5-10 TBS2000 Series Service Manual...

  • Page 8: Important Safety Information

    See instructions for the location. Do not position the equipment so that it is difficult to operate the power cord; it must remain accessible to the user at all times to allow for quick disconnection if needed. TBS2000 Series Service Manual...
  • Page 9 Use only insulated voltage probes, test leads, and adapters supplied with the product, or indicated by Tektronix to be suitable for the product. Observe all terminal ratings. To avoid fire or shock hazard, observe all ratings and markings on the product.
  • Page 10 Connect and disconnect properly. De-energize the circuit under test before connecting or disconnecting a current probe. Connect the probe reference lead to earth ground only. Do not connect a current probe to any wire that carries voltages above the current probe voltage rating. TBS2000 Series Service Manual...

  • Page 11: Service Safety Summary

    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 product or other property. TBS2000 Series Service Manual...

  • Page 12: Symbols And Terms On The Product

    find out the nature of the potential hazards and any actions which have to be taken to avoid them. (This symbol may also be used to refer the user to ratings in the manual.) The following symbol(s) may appear on the product: viii TBS2000 Series Service Manual...

  • Page 13: Preface

    Preface This service manual provides information that you need to troubleshoot, disassemble, and replace parts on the following Tektronix oscilloscopes: Model Bandwidth Channels TBS2072 70 MHz TBS2102 100 MHz 70 MHz TBS2074 TBS2104 100 MHz Manual conventions This manual uses certain conventions that you should become familiar with before performing service.
  • Page 14 Preface TBS2000 Series Service Manual...

  • Page 15: Operating Information

    Operating information...
  • Page 17 Operating information For information on installing and operating your oscilloscope, refer to the TBS2000 Series Digital Storage Oscilloscopes User Manual (Tektronix part number 077-1147-xx English; other languages available), which is downloadable from the Tektronix Web site (www.tek.com/downloads). TBS2000 Series Service Manual...
  • Page 18 Operating information 1–2 TBS2000 Series Service Manual...

  • Page 19: Theory Of Operation

    Theory of operation...

  • Page 21: Figure 2-1: Tbs2000 Block Diagram (2 Channel)

    This chapter describes the electrical operation of the oscilloscope to the module level. The block diagrams shows the oscilloscope module interconnections. Figure 2-1: TBS2000 block diagram (2 channel) Figure 2-2: TBS2000 block diagram (4 channel) TBS2000 Series Service Manual 2–1...

  • Page 22: Power Supply

    The Front Panel board is powered on at all times when AC power is connected to the unit. I/O ports (2 channel The Main board provides USB ports (Host and Device), an Ethernet port (LAN), and an Aux Out trigger output connections. models) 2–2 TBS2000 Series Service Manual...

  • Page 23: I/O Board (4 Channel Models)

    Main board, and controls power to the Main board. The Front Panel board also generates the probe compensation output signal and controls power to the Main board. TBS2000 Series Service Manual 2–3...
  • Page 24 Theory of operation 2–4 TBS2000 Series Service Manual...

  • Page 25: Adjustments

    Adjustments...
  • Page 27 There are no customer-performable adjustment procedures (calibrations) for the TBS2000 Series oscilloscopes. Please return the instrument to Tektronix if adjustment is required. Calibrations can only be performed at a Tektronix service center and require the use of traceable test equipment (signal sources and measuring equipment) to verify the performance of the instrument.
  • Page 28 Adjustments 3–2 TBS2000 Series Service Manual...

  • Page 29: Maintenance

    Maintenance...

  • Page 31: Preventing Esd

    This section contains the information needed to do periodic and corrective maintenance on the oscilloscope, and repackaging instructions for returning the oscilloscope to Tektronix for service. Preventing ESD Before servicing this product, read the General Safety Summary and the Service Safety Summary at the front of the manual, and familiarize yourself with the following electrostatic discharge (ESD) information.
  • Page 32 If any dirt remains, use a cloth or swab dipped in a 75% isopropyl alcohol solution. Use a swab to clean narrow spaces around controls and connectors. Do not use abrasive compounds on any part of the chassis that might damage the chassis. 4–2 TBS2000 Series Service Manual...

  • Page 33: Table 4-1: External Inspection Checklist

    Use a 75% isopropyl alcohol solution as a cleaner and rinse with deionized water. Before using any other type of cleaner, consult your Tektronix Service Center or representative. Exterior inspection Inspect the external oscilloscope case, display, and controls for damage, wear, and missing parts, using the following table as a guide.

  • Page 34: Table 4-2: Internal Inspection Checklist

    Dry all parts with low-pressure, deionized air. d. Dry all components and assemblies in an oven or drying compartment using low-temperature (125 °F to 150 °F) circulating air. Lubrication There is no periodic lubrication required for this oscilloscope. 4–4 TBS2000 Series Service Manual...

  • Page 35: Module Removal

    Troubleshooting This section contains information and procedures to help you isolate a defective module in the TBS2000 Series oscilloscopes. WARNING. Before performing this or any other procedure in this manual, read the General Safety Summary and Service Safety Summary found at the beginning of this manual, and, to prevent possible injury to service personnel or damage to electrical components, read Preventing ESD.

  • Page 36: Troubleshooting Procedure

    When you operate the four-channel instrument with the cabinet removed, the system fan will not cool the instrument. You must provide an external fan to cool the interior of the instrument. Failure to do so could cause instrument damage. 4–6 TBS2000 Series Service Manual...

  • Page 37: Figure 4-1: Primary Troubleshooting Procedure Flowchart

    Maintenance Primary troubleshooting flowchart Figure 4-1: Primary troubleshooting procedure flowchart TBS2000 Series Service Manual 4–7...

  • Page 38: Figure 4-2: Ac Power Supply Module Troubleshooting

    Images show the power supply cable disconnected from the main board, to better show the test point locations. The power cable from the Power Supply must be connected to the Main board to test the +12 VDC value. 4–8 TBS2000 Series Service Manual...

  • Page 39: Figure 4-3: Board Isolation Troubleshooting Flowchart

    Table 4-3: Most likely board to replace for failed diagnostics Failed test Most likely board Main Display Main Acquisition Main (or Front End board on 4-channel models) Main Front Panel Front Panel or Main Main (or I/O board on 4-channel models) TBS2000 Series Service Manual 4–9...

  • Page 40: Unpacking And Repacking Instructions

    A complete description of the service required Seal the shipping carton with an industrial stapler or strapping tape. Mark the address of the Tektronix Service Center and also your own return address on the shipping carton in two prominent locations. See www.tektronix.com/service to find a service center near you.

  • Page 41: Replaceable Parts List

    Replaceable parts list...

  • Page 43: Parts Ordering Information

    For some parts in this manual, you will find the letters “xx” in place of the revision level number. When you order parts, Tektronix will provide you with the most current part for your product type, serial number, and modification (if applicable). At the time of your order, Tektronix will determine the part number revision level needed for your product, based on the information you provide.

  • Page 44: Using The Replaceable Parts List

    Items in this section are referenced by figure and index numbers to the exploded view Number illustrations. Tektronix Part Use this part number when ordering replacement parts from Tektronix. Number 3 and 4 Serial Number Column three indicates the serial number at which the part was first effective. Column four indicates the serial number at which the part was discontinued.

  • Page 45: The Replaceable Parts List

    Replaceable parts list The replaceable parts list Figure 5-1: Four channel models; front half TBS2000 Series Service Manual 5–3...

  • Page 46: Table 5-1: Four-Channel Model Parts: Front Panel, Display, And Front Chassis

    ASSEMBLY, KNOB; .470 DIAMETER 366-0936-xx ASSEMBLY, KNOB; .925 DIAMETER 335-3429-xx MARKER, IDENTIFICATION LABEL, SAFETY CONTROLLED Quantity indicated is for the entire instrument, not necessarily for each image. Tightening torque for 211-1272-xx and 211-1273-xx is 0.9 N*M 5–4 TBS2000 Series Service Manual...

  • Page 47: Figure 5-2: Four Channel Models; Rear Half

    Replaceable parts list Figure 5-2: Four channel models; rear half TBS2000 Series Service Manual 5–5...

  • Page 48: Table 5-2: Four-Channel Model Parts: Inputs, Main Board, Power Supply, I/O, Rear Chassis, Rear Cover

    Quantity indicated is for the entire instrument, not necessarily for items in each image. Tightening torque for 211-1272-xx and 211-1273-xx is 0.9 N*M. Tightening torque for 129-1693-xx is 1.13 N*M. Tightening torque for 220-0265-xx is 4.52N*M, ±0.23 N*M. Tektronix option TEKUSBWIFI. 5–6 TBS2000 Series Service Manual...

  • Page 49: Figure 5-3: Two Channel Models; Front Half

    Replaceable parts list Figure 5-3: Two channel models; front half TBS2000 Series Service Manual 5–7...

  • Page 50: Table 5-3: Two Channel Model Parts; Front Panel, Labels, Front Panel, Lcd, Chassis

    366-0934-xx ASSEMBLY, KNOB; .470 IN DIAMETER 366-0936-xx ASSEMBLY, KNOB; .925 IN DIAMETER Quantity indicated is for the entire instrument, not necessarily for items in each image. Tightening torque for 211-1272-xx and 211-1273-xx is 0.9 N*M. 5–8 TBS2000 Series Service Manual...

  • Page 51: Figure 5-4: Two Channel Models; Rear Half

    Replaceable parts list Figure 5-4: Two channel models; rear half TBS2000 Series Service Manual 5–9...

  • Page 52: Table 5-4: Two Channel Model Parts; Power Supply, Main Board, Ac Connector/Filter, Rear Cover

    WIFI USB DONGLE FOR TBS Quantity indicated is for the entire instrument, not necessarily for each image. Tightening torque for 211-1272-xx and 211-1273-xx is 0.9 N*M. Tightening torque for 220-0265-xx is 4.52N*M, ±0.23 N*M. Tektronix option TEKUSBWIFI. 5–10 TBS2000 Series Service Manual...

This manual is also suitable for:

Tbs2102Tbs2072Tbs2074Tbs2104

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