Tektronix TBS2000B Series Service Manual
Digital storage oscilloscopes
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Also See for TBS2000B Series:
- User manual (228 pages) ,
- Installation and safety instructions (54 pages) ,
- Demo manual (35 pages)
Related Manuals for Tektronix TBS2000B Series
Summary of Contents for Tektronix TBS2000B Series
- Page 1 TBS2000B Series Digital Storage Oscilloscopes Service Manual *P077153900* 077-1539-00...
- Page 3 TBS2000B 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 prior to performing service.
- Page 4 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.
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Page 5: Table Of Contents
Maintenance Preventing ESD ..........................Inspection and cleaning ........................ General care ..........................Flat panel display cleaning ...................... Exterior cleaning ........................Interior cleaning ........................Lubrication ..........................Module removal ..........................Required tools and equipment ....................To remove modules ......................... TBS2000B Series Service Manual... - Page 6 Unpacking ..........................Repacking ..........................Storage ............................. Replaceable parts Parts ordering information ......................Part number revision level ....................... Module servicing ........................Using the replaceable parts list ..................... Abbreviations .......................... Exploded view ......................... The replaceable parts list ......................TBS2000B Series Service Manual...
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Page 7: Important Safety Information
Before use, always check the product with a known source to be sure it is operating correctly. This product is not intended for detection of hazardous voltages. Use personal protective equipment to prevent shock and arc blast injury where hazardous live conductors are exposed. TBS2000B Series Service Manual... - Page 8 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 rating and markings on the product.
- Page 9 Disconnect the probe input and the probe reference lead from the circuit under test before disconnecting the probe from the measurement product. Connect and disconnect properly. De-energize the circuit under test before connecting or disconnecting the current probe. TBS2000B Series Service Manual...
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Page 10: Service Safety Summary
Disconnect power, remove battery (if applicable), and disconnect test leads before removing protective panels, soldering, or replacing components. Verify safety after repair. Always recheck ground continuity and mains dielectric strength after performing a repair. TBS2000B Series Service Manual... -
Page 11: Terms In The Manual
(This symbol may also be used to refer the user to ratings in the manual.) The following symbols may appear on the product: TBS2000B Series Service Manual... - Page 12 Important safety information viii TBS2000B Series Service Manual...
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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 TBS2072B 70 MHz TBS2102B 100 MHz TBS2202B 200 MHz TBS2074B 70 MHz TBS2104B 100 MHz TBS2204B 200 MHz... - Page 14 Preface TBS2000B Series Service Manual...
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Page 15: Ordering Information
Ordering information Ordering information For information on installing and operating your oscilloscope, refer to the TBS2000B Series Digital Storage Oscilloscopes User Manual (Tektronix part number 077-1525-xx English; other languages available), which is downloadable from the Tektronix Web site (www.tek.com/downloads). TBS2000B Series Service Manual... - Page 16 Ordering information TBS2000B Series Service Manual...
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Page 17: Theory Of Operation
Theory of operation This chapter describes the electrical operation of the oscilloscope to the module level. The block diagrams shows the oscilloscope module interconnections. Figure 1: TBS2000B block diagram (2 channel) TBS2000B Series Service Manual... -
Page 18: Power Supply
Theory of operation Figure 2: TBS2000B block diagram (4 channel) Power supply The Power Supply board converts AC line voltage to +12 V to power for all internal circuits. TBS2000B Series Service Manual... -
Page 19: Front End Assembly (4 Channel Models)
The Main board converts the +12 V power to +5 V, -5 V, +3.3 V, +2.5 V, +2 V, +1.8 V, +1.5 V, +1.1 V, 1 V, and 0.75 V, used by circuitry throughout the system. The Front Panel board is powered on at all times when AC power is connected to the unit. TBS2000B Series Service Manual... -
Page 20: 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. TBS2000B Series Service Manual... -
Page 21: Adjustments
There are no customer-performable adjustment procedures (calibrations) for the TBS2000B 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 22 Adjustments TBS2000B Series Service Manual...
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Page 23: Maintenance
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, as well as the following ESD information. -
Page 24: Inspection And Cleaning
Do not spray liquids directly on the display surface. ■ Do not scrub the display with excessive force. CAUTION. To prevent getting moisture inside the instrument during external cleaning, do not spray any cleaning solutions directly onto the screen or instrument. TBS2000B Series Service Manual... -
Page 25: Exterior Cleaning
Use only deionized water when cleaning the front-panel buttons. Use a 75% isopropyl alcohol solution as a cleaner for cabinet parts. Before using any other type of cleaner, consult your Tektronix Service Center or representative. -
Page 26: Interior Cleaning
If the instrument fails the Performance Verification tests, it must be returned to a Tektronix Service Center for repair and calibration. CAUTION. To prevent damage from electrical arcing, ensure that circuit boards and components are dry before applying power to the instrument. -
Page 27: Lubrication
If you are disassembling the instrument for cleaning, refer to the Inspection and Cleaning procedure for instructions. (See Inspection and cleaning on page 10) WARNING. Disconnect the power cord from the line voltage source. Failure to do so could cause serious injury or death. TBS2000B Series Service Manual... -
Page 28: Required Tools And Equipment
This section requires that service personnel have the appropriate skills to work on this instrument, including PC troubleshooting and Microsoft Windows operating system skills. Details of PC and Windows operation and service are not in this manual. For assistance, contact your local Tektronix Service Center. TBS2000B Series Service Manual... -
Page 29: Adjustment After Repair
CAUTION. 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. TBS2000B Series Service Manual... -
Page 30: Primary Troubleshooting Flowchart
Maintenance Primary troubleshooting flowchart Figure 3: Primary troubleshooting procedure flowchart TBS2000B Series Service Manual... -
Page 31: Ac Power Supply Module Troubleshooting Flowchart
NOTE. 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. TBS2000B Series Service Manual... -
Page 32: Board Isolation Troubleshooting Flowchart
Figure 5: Board isolation troubleshooting flowchart 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) TBS2000B Series Service Manual... -
Page 33: Unpacking And Repacking Instructions
Use a corrugated cardboard shipping carton having a test strength of at least 275 pounds (125 kg) and with an inside dimension at least six inches (15.25 cm) greater than the instrument dimensions. If the instrument is being shipped to a Tektronix Service Center, enclose the following information: ■... - Page 34 Maintenance TBS2000B Series Service Manual...
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Page 35: Replaceable Parts
Part number revision level Tektronix part numbers contain two digits that show the revision level of the part. For some parts in this manual, you will find the letters “xx” in place of the revision level number. -
Page 36: Module Servicing
For more information about the module exchange program, call 1-800-833-9200. Outside North America, contact a Tektronix sales office or distributor; see the Tektronix Web site (www.tek.com) for a list of offices. Module repair and return. You may ship your module to us for repair, after which we will return it to you. -
Page 37: Abbreviations
The replaceable parts list Figure 6: Four channel models; front half Table 4: Four-channel model parts: front panel, display, and front chassis Fig. & Tektronix part number Serial no. Serial no. Name & description index effective... - Page 38 Replaceable parts Fig. & Tektronix part number Serial no. Serial no. Name & description index effective discont'd number 850-0312-xx FRAME ASSEMBLY; DISPLAY; TBS2K 407-5760-xx BRACKET, DISPLAY MOUNT 441-2848-xx CHASSIS, FRONT 211-1272-xx SCREW, MACHINE; 6-32 X 0.250, PNH, STL, ZNPL,T-15 TORX DR...
- Page 39 Replaceable parts Fig. & Tektronix part number Serial no. Serial no. Name & description index effective discont'd number 335-4117-xx LABEL, NOMENCLATURE, TBS2074B 335-4116-xx LABEL, NOMENCLATURE, TBS2104B 335-4093-xx LABEL, NOMENCLATURE, TBS2204B Figure 7: Four channel models; rear half Table 5: Four-channel model parts: inputs, main board, power supply, I/O, rear chassis, rear cover Fig.
- Page 40 Replaceable parts Fig. & Tektronix part number Serial no. Serial no. Name & description index effective discont'd number 146-0148-xx BATTERY, DRY: 3 VOLT, 150MAH, LITHIUM, LEADED BUTTON CELL, SAFETY CONTROLLED 174-6286-xx CABLE ASSEMBLY (LINE INPUT), SAFETY CONTROLLED 131-6643-xx CONTACT, ELECTRICAL 441-2847-xx CHASSIS;...
- Page 41 Replaceable parts Figure 8: Two channel models; front half Table 6: Two-channel model parts: front panel, display, and front chassis Fig. & Tektronix part number Serial no. Serial no. Name & description index effective discont'd number 5-3-1 335-4111-xx LABEL, BLACK FRAME-B2 9 INCH DISPLAY, TBS2102,...
- Page 42 Replaceable parts Fig. & Tektronix part number Serial no. Serial no. Name & description index effective discont'd number 335-4042-xx LABEL, FRONT PANEL 2CH 335-4137-xx MARKER, IDENTIFICATION FRONT PANEL OVERLAY, FRENCH 335-4146-xx MARKER, IDENTIFICATION FRONT PANEL OVERLAY, RUSSIAN 335-4138-xx MARKER, IDENTIFICATION FRONT PANEL OVERLAY,...
- Page 43 Replaceable parts Figure 9: Two channel models; rear half Table 7: Two-channel model parts: power supply, main board, AC connector/filter, rear cover Fig. & Tektronix part number Serial no. Serial no. Name & description index effective discont'd number 5-4-1 119-8488-xx POWER SUPPLY;...
- Page 44 Replaceable parts Fig. & Tektronix part number Serial no. Serial no. Name & description index effective discont'd number 348-1909-xx FOOT REAR; SAFETY CONTROLLED 348-2209-xx FOOT, FRONT CABINET, HINGED, SAFETY CONTROLLED 214-5148-xx SPRING FRONT FOOT 131-6643-xx CONTACT, ELECTRICAL 220-0265-xx NUT, PLAIN, HEX; 0.5-28 X 0.625 HEX, BRS, NKL PL...