Page 1 T h e t e s t & me a s u r e me n t e q u i p me n t y o u n e e d a t t h e p r i c e y o u w a n t . A l l t e s t I n s t r u me n t s , I n c .
Page 2 This document supports 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...
Page 3 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. Information in this publication supercedes that in all previously published material.
Page 4 Tektronix, shipping charges prepaid, and with a copy of customer proof of purchase. Tektronix shall pay for the return of the product to Customer if the shipment is to a location within the country in which the Tektronix service center is located.
Page 6: Table Of Contents
Table of Contents General Safety Summary ........Service Safety Summary .
Page 7 Table of Contents Self Test ........... . 4- -3 Self Calibration .
Page 8 Table of Contents Troubleshooting ..........6- -31 Adjustment After Repair .
Page 9 Table of Contents List of Figures Figure 2- -1: Routing the power cord and security cable ..2- -4 Figure 2- -2: Installing and removing an extension module ..2- -5 Figure 3- -1: Module-level block diagram (two channel) .
Page 10 Table of Contents List of Tables Table 1- -1: Oscilloscope specifications ......1- -1 Table 1- -2: Oscilloscope general specifications .
Page 11 Table of Contents TDS1000 and TDS2000 Series Digital Storage Oscilloscopes Service Manual...
Page 12: General Safety Summary
General Safety Summary Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it. Only qualified personnel should perform service procedures. Injury Precautions Use Proper Power Cord. To avoid fire hazard, use only the power cord specified for this product.
Page 13 General Safety Summary Symbols and Terms Terms in this 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 product or other property.
Page 14: Service Safety Summary
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 product unless another person capable of rendering first aid and resuscitation is present.
Page 15 Service Safety Summary TDS1000 and TDS2000 Series Digital Storage Oscilloscopes Service Manual...
Page 16: Environmental Considerations
Directive 2002/96/EC on waste electrical and electronic equipment (WEEE). For information about recycling options, check the Support/Service section of the Tektronix Web site (www.tektronix.com). Mercury Notification. This product uses an LCD backlight lamp that contains mercury. Disposal may be regulated due to environmental considerations. Please contact your local authorities or, within the United States, the Electronics Industries Alliance (www.eiae.org) for disposal or recycling information.
Page 17 Environmental Considerations TDS1000 and TDS2000 Series Digital Storage Oscilloscopes Service Manual...
Page 18: Preface
Preface The service manual for the TDS1000- and TDS2000-Series Digital Storage Oscilloscopes provides instructions to verify the performance of, calibrate, troubleshoot, and repair the oscilloscopes to the module level. Unless noted otherwise, the term “oscilloscope” refers to all of the models in the TDS1000 and TDS2000 series.
Page 19 Preface TDS1000 and TDS2000 Series Digital Storage Oscilloscopes Service Manual...
Page 20: Specifications
Specifications...
Page 22: Table 1- 1: Oscilloscope Specifications
Specifications These specifications apply to all TDS1000- and TDS2000-series oscilloscopes. To verify that an oscilloscope meets specifications, it must first meet the following conditions: H The oscilloscope must have been operating continuously for twenty minutes within the specified operating temperature. H You must perform the Do Self Cal operation, accessible through the Utility menu, if the operating temperature changes by more than 5 °C.
Page 23 Specifications Table 1- 1: Oscilloscope specifications (Cont.) Inputs Maximum Voltage Overvoltage Category* Maximum Voltage Between Signal and CAT I and CAT II 300 V Common at input BNC Common at input BNC CAT III 150 V Derate at 20 dB/decade above 100 kHz to 13 V peak AC at 3 MHz and above. For non-sinusoidal waveforms, peak value must be less than 450 V.
Page 24 Specifications Table 1- 1: Oscilloscope specifications Vertical TDS1001 TDS1002, TDS2002, TDS2004 TDS1012, TDS2012, TDS2014 TDS2022, TDS2024 Analog Bandwidth Analog Bandwidth in Sample and Average 40 MHz{* 60 MHz{* 100 MHz{* 200 MHz{* modes at BNC or with 0 °C to +40 °C (32 °F P2200 probe, to 104 °F) DC Coupled...
Page 25 Specifications Table 1- 1: Oscilloscope specifications (Cont.) Horizontal Sample Rate Range TDS2022, TDS2024 TDS1001, TDS1002, TDS2004, TDS1012, TDS2002, TDS2012, TDS2014 5 S/s to 2 GS/s 5 S/s to 1 GS/s Waveform Interpolation (sin x)/x Record Length 2500 samples for each channel SEC/DIV Range TDS2022, TDS2024 TDS1001, TDS1002, TDS2004, TDS1012, TDS2002,...
Page 26 Specifications Table 1- 1: Oscilloscope specifications Trigger Coupling Sensitivity TDS1001, TDS1002, TDS2022, TDS2024 Trigger Sensitiv- TDS1012, TDS2002, ity, Edge Trigger Type TDS2004, TDS2012, TDS2014 200 mV from DC to 100 MHz* 200 mV from DC to 100 MHz* 350 mV from 100 MHz to 200 MHz* EXT/5 1 V from DC to 100 MHz* 1 V from DC to 100 MHz*...
Page 27 Specifications Table 1- 1: Oscilloscope specifications (Cont.) Trigger Sensitivity, Video Trig- Composite video signal ger Type, typical Source Range Internal Pk-pk amplitude of 2 divisions 400 mV EXT/5 Signal Formats and Supports NTSC, PAL, and SECAM broadcast systems for any field or any line Field Rates, Video Trigger Type Holdoff Range...
Page 28 Specifications Table 1- 1: Oscilloscope specifications (Cont.) Trigger Frequency Counter Signal Source Pulse Width or Edge Trigger modes: all available trigger sources The Frequency Counter measures trigger source at all times, including when the oscilloscope acquisition is halted due to changes in the run status, or acquisition of a single shot event has completed. Pulse Width Trigger mode: The oscilloscope counts pulses of significant magnitude inside the 250 ms measurement window that qualify as triggerable events, such as narrow pulses in a PWM pulse train if set to <...
Page 29: Certifications And Compliances
Specifications Table 1- 2: (Cont.) Oscilloscope general specifications Environmental 0 °C to +50 °C (32 °F to 122 °F) Temperature Operating - - 40 °C to +71 °C (- - 40 °F to 159.8 °F) Nonoperating Cooling Method Convection +40 °C or below ≤...
Page 30 Specifications Australia / New Zealand Complies with EMC provision of Radiocommunications Act per these stan- Declaration of Conformity dard(s): - EMC H AS/NZS 2064.1/2. Industrial, Scientific, and Medical Equipment: 1992 EMC Compliance Meets the intent of Directive 89/336/EEC for Electromagnetic Compatibility when it is used with the product(s) stated in the specifications table.
Page 31 Specifications H IEC 61010- -031:2002. Particular requirements for handheld probe assemblies for electrical measurement and test equipment. Equipment Type Test and measuring equipment. Pollution Degree A measure of the contaminates that could occur in the environment around and Descriptions within a product. Typically the internal environment inside a product is considered to be the same as the external.
Page 32: Operating Information
Operating Information...
Page 34 Operating Information TDS1000- and TDS2000-series oscilloscopes are two- or four-channel instru- ments in small, lightweight, benchtop chassis that you can use to take ground-referenced measurements. In addition to a list of general features, this chapter covers: H How to install your product H How to add extended functions H How to perform a brief functional check H How to use the self-calibration routine...
Page 35: General Features
Operating Information General Features Model Channels Bandwidth Sample rate Display TDS1001 40 MHz 1.0 GS/s Monochrome TDS1002 60 MHz 1.0 GS/s Monochrome TDS1012 100 MHz 1.0 GS/s Monochrome TDS2002 60 MHz 1.0 GS/s Color TDS2004 60 MHz 1.0 GS/s Color TDS2012 100 MHz 1.0 GS/s...
Page 36 Operating Information H RS-232, GPIB, and Centronics ports with the optional TDS2CMA Commu- nications Extension Module H User interface in ten user-selectable languages 2- - 3 TDS1000 and TDS2000 Series Digital Storage Oscilloscopes Service Manual...
Page 37: Installation
Refer to page 8- -8 in the Replaceable Parts chapter for a list of power cords available from Tektronix. All power cords must be rated for > 3 Amps, 3 wire, and have an 18 AWG (1.0 mm) Safety Ground lead, or larger.
Page 38: Extension Modules
Operating Information Extension Modules You can increase the feature set of your oscilloscope by inserting an extension module. Refer to page 8- -8 for more information. Figure 2- -2 shows the proper way to install and remove a module without bending the connecting pins. For more information on extension modules, see your oscilloscope user manual.
Page 39: Functional Check
Operating Information Functional Check Perform this quick functional check to verify that your oscilloscope is operating correctly. Turn on the oscilloscope. ON/OFF button Wait until the display shows that all power-on tests passed. Push the DEFAULT SETUP button. The default Probe menu attenuation setting is 10X. PASSED Set the switch to 10X on the P2200 probe and connect the oscilloscope probe to PROBE COMP...
Page 40: Self Calibration
Operating Information Self Calibration The self-calibration routine lets you quickly optimize the oscilloscope signal path for maximum measurement accuracy. You can run the routine at any time but you should always run the routine if the ambient temperature changes by 5 _C or more.
Page 41 Operating Information Table 2- - 1: Default settings (Cont.) Menu or system Option, button or knob Default setting MATH Operation CH1 -- CH2 FFT operation: Source Source Window Window Hanning Hanning FFT Zoom MEASURE Source Type None TRIGGER Mode Type Edge Edge TRIGGER Type...
Page 42 Operating Information The DEFAULT SETUP button does not reset the following: H Language option H Saved setup files H Saved reference waveform files H Display contrast H Calibration data H Printer setup H RS-232 setup H GPIB setup 2- - 9 TDS1000 and TDS2000 Series Digital Storage Oscilloscopes Service Manual...
Page 43 Operating Information 2- - 10 TDS1000 and TDS2000 Series Digital Storage Oscilloscopes Service Manual...
Page 44: Theory Of Operation
Theory of Operation...
Page 46 Theory of Operation This chapter describes the electrical operation of the TDS1000- and TDS2000-series oscilloscopes to the module level. It describes the basic operation of each functional circuit block shown in Figures 3- -1 and 3- -2. Of necessity, the descriptions for the two and four channel units, and the color and monochrome units, are slightly different.
Page 47: Figure 3- -1: Module-Level Block Diagram (Two Channel)
Theory of Operation Power Supply AC Line In AC Line Backlight Power (Color) Backlight Power (Mono) DC Out & Line Through Trigger chassis A1 Main TDS1000 (Mono) Front Panel TDS2000 (Color) Display J101 P131 J202 DC In Backlight P/O J203 (Color) (Mono) J201...
Page 48: Figure 3- -2: Module-Level Block Diagram (Four Channel)
Theory of Operation Power Supply AC Line In AC Line Backlight Power Not used (Mono) Backlight Power (Color) DC Out Through & Line chassis Trigger A1 Main Front Panel Color Display J101 DC In Backlight J201 J902 J104 P/O J203 Probe Comp Display Control Signal...
Page 49: Main Board
Theory of Operation Main Board The main board of a four-channel oscilloscope is essentially 2, two-channel oscilloscopes tied together through a common microprocessor, and some special interconnects to support combining the display and trigger systems. For this reason, the focus of the main board discussion will be the two-channel system, with differences noted as necessary.
Page 50: Input Signal Interface
Theory of Operation Processing and Display The processing and display system consists of the display ASIC, DRAM, and System system oscillator. Digitized acquisition samples are received by the display ASIC and stored in DRAM. Once data are received by the display ASIC, various corrections are applied, display rasterization is performed, and the waveform is placed into a display buffer.
Page 51: Power Supply
Theory of Operation Power Supply The main power supply module for the TDS1000- and TDS2000-series oscilloscopes is a wide input range universal supply. It is capable of providing about 17 W of power for the oscilloscope while allowing the input to run from about +90 V to +264 V.
Page 52: Leds
Theory of Operation Four-Channel The front-panel board of the four channel units is effectively two panels in Oscilloscopes parallel. The left side of the board is largely handled by the display ASIC for channels 1 and 2. The right side of the board is handled by the channel 3 and 4 ASIC.
Page 53 Theory of Operation 3- - 8 TDS1000 and TDS2000 Series Digital Storage Oscilloscopes Service Manual...
Page 54: Performance Verification
Performance Verification...
Page 56: Required Equipment
Time Mark Generator Calibration Option (Option accuracy 5500A-SC) 50 Ω BNC Cable BNC male to BNC male, Tektronix part number ≈ 1 m (36 in) long 012-0482-XX 50 Ω BNC Cable BNC male to BNC male, Tektronix part number ≈ 25 cm (10 in) long 012-0208-XX 50 Ω...
Page 57: Test Record
Performance Verification Test Record Serial number Procedure performed by Date Test Passed Failed Self Test Oscilloscope tests Low limit Test result High limit Channel 1 DC Gain Accuracy 5 mV/div 33.6 mV 36.4 mV 200 mV/div 1.358 V 1.442 V 2 V/div 13.58 V 14.42 V...
Page 58: Performance Verification Procedures
Performance Verification Performance Verification Procedures Before beginning these procedures, two conditions must first be met: H The oscilloscope must have been operating continuously for twenty minutes within the operating temperature range specified. H You must perform the Self Calibration operation described below. If the ambient temperature changes by more than 5 °C, you must perform the Self Calibration operation again.
Page 59 Performance Verification Press menu button Select menu option Select setting 4. MEASURE Source An unchecked channel Type Mean 3. As shown below, connect the oscilloscope channel selected in the table to the DC voltage source. DC voltage Digitizing oscilloscope source Dual banana to BNC adapter...
Page 60: Check Bandwidth
Performance Verification Check Bandwidth This test checks the bandwidth of all input channels. 1. Set up the oscilloscope using the following steps: Press menu button Select menu option Select setting DEFAULT SETUP — — CH 1 Probe ACQUIRE Average TRIGGER Coupling Noise MEASURE...
Page 61: Check Sample Rate And Delay Time Accuracy
Performance Verification 8. Set the oscilloscope SEC/DIV to 10 ns/div. 9. Check that the peak-to-peak measurement is ≥2.12 V. 10. Disconnect the test setup. 11. Repeat steps 1 through 10 until all input channels have been checked. Check Sample Rate and This test checks the time base accuracy.
Page 62: Check Edge Trigger Sensitivity
Performance Verification 10. Check that the rising edge of the marker crosses the center horizontal graticule line within ±2 divisions of center graticule. NOTE. One division of displacement from graticule center corresponds to a 25 ppm time base error. 11. Disconnect the test setup. Check Edge Trigger This test checks the edge trigger sensitivity for all input channels.
Page 63 Performance Verification 5. Set the leveled sine wave generator frequency to 10 MHz. 6. Set the leveled sine wave generator output level to approximately 500 mV so that the measured amplitude is approximately 500 mV. (The measured amplitude can fluctuate around 500 mV.) 7.
Page 64 Performance Verification Check External Edge This test checks the edge trigger sensitivity for the external trigger. Trigger Sensitivity 1. Set up the oscilloscope using the following steps: Press menu button Select menu option Select setting DEFAULT SETUP — — CH 1 Probe TRIGGER Source...
Page 65 Performance Verification 6. Set the sine wave generator output level so that CH1 indicates approximately 200 mV so that the measured amplitude is approximately 200 mV. (The measured amplitude can fluctuate around 200 mV.) The output level of the sine wave generator will be approximately 400 mV. 7.
Page 66: Adjustment Procedures
Adjustment Procedures...
Page 68: Required Equipment
Calibrator with Oscilloscope Calibration Option (Option 5500A-SC) 50 Ω BNC Cable BNC male to BNC male, Tektronix part number 012-0482-00 ≈ 1 m (36 in) long 50 Ω BNC Cable (two) BNC male to BNC male, Tektronix part number 012-0208-00 ≈...
Page 69 Table 5- - 1: Required equipment (Cont.) Description Minimum requirements Examples Dual Banana to BNC Banana plugs to BNC female Tektronix part number 103-0090-00 Adapter BNC T One male and two female Tektronix part number 103-0030-00 BNC connectors 5- - 2...
Page 70: Adjustment Procedure
Adjustment Procedures Adjustment Procedure The adjustment procedure consists of 70 steps for the two-channel oscilloscope, and 106 steps for the four-channel model. Each step requires an external voltage source for new calibration constants. Before performing the adjustment procedure, you must warm up the oscilloscope for at least ten minutes in an ambient temperature between 20 °C and 30 °C.
Page 71: Figure 5- -1: Adjustment Setups
Adjustment Procedures DC voltage setup 1 Two Channel Four Channel Digitizing oscilloscope Digitizing oscilloscope DC voltage source Dual banana to BNC adapter 10-inch 10-inch 10-inch BNC cables BNC cables BNC cables 10-inch BNC cable BNC ‘T’ BNC cable BNC ‘T’ connector connectors BNC cable BNC ‘T’...
Page 72: Adjustment Procedure
Adjustment Procedures Adjustment Procedure Use this procedure to load new calibration constants. 1. Enable the Service menu as described on page 5- -3. 2. Push the Service option button. 3. Push the Factory Cal option button. 4. Push the Warmup Timer option button. 5.
Page 73: Table 5- -2: Adjustment Steps
Adjustment Procedures Table 5- - 2: Adjustment steps Step Step Two-channel Four-channel Signal Signal source setting Input models models Refer to the DC voltage setup 1 diagram DC Voltage 1 0.0 V CH1 through DC Voltage 1 --20.0 V DC Voltage 1 --2.0 V DC Voltage 1 --1.6 V...
Page 74 Adjustment Procedures Table 5- - 2: Adjustment steps (Cont.) Step Step Two-channel Four-channel Signal Signal source setting Input models models Refer to the DC voltage setup 2 diagram EXT TRIG DC Voltage 2 --5.0 V DC Voltage 2 --1.0 V DC Voltage 2 1.0 V DC Voltage 2...
Page 75 Adjustment Procedures Table 5- - 2: Adjustment steps (Cont.) Step Step Two-channel Four-channel Signal Signal source setting Input models models Sinewave Generator, 50 Ohm 5 kHz, 1 V Sinewave Generator, 50 Ohm 1 MHz, 100 mV Sinewave Generator, 50 Ohm 1 MHz, 1 V Sinewave Generator, 50 Ohm 50 kHz, 1 V...
Page 76 Adjustment Procedures Table 5- - 2: Adjustment steps (Cont.) Step Step Two-channel Four-channel Signal Signal source setting Input models models Sinewave Generator, 50 Ohm 5 kHz, 1 V Sinewave Generator, 50 Ohm 1 MHz, 100 mV Sinewave Generator, 50 Ohm 1 MHz, 1 V Sinewave Generator, 50 Ohm 50 kHz, 1 V...
Page 77 Adjustment Procedures Table 5- - 2: Adjustment steps (Cont.) Step Step Two-channel Four-channel Signal Signal source setting Input models models Sinewave Generator, 50 Ohm 5 kHz, 1 V Sinewave Generator, 50 Ohm 1 MHz, 100 mV Sinewave Generator, 50 Ohm 1 MHz, 1 V Sinewave Generator, 50 Ohm 50 kHz, 1 V...
Page 78: Maintenance
Maintenance...
Page 80: Preparation
Maintenance This chapter contains the information needed to do periodic and corrective maintenance on the oscilloscope. The following sections are included: H Preparation tells you how to get ready to do oscilloscope maintenance. H Preventing ESD provides general information on preventing damage to internal modules when doing maintenance.
Page 81: Inspection And Cleaning
Maintenance H Discharge the static voltage from your body by wearing a grounded antistatic wrist strap while handling these modules. H Service static-sensitive modules only at static-free workstations. Do not allow anything capable of generating or holding a static charge on the workstation surface.
Page 82: Table 6- -1: Internal Inspection Check List
Maintenance Inspection, Exterior. Inspect the outside of the oscilloscope for damage, wear, and missing parts. Oscilloscopes that appear to have been dropped or otherwise abused should be checked thoroughly to verify correct operation and perfor- mance. Immediately repair defects that could cause personal injury or lead to further damage to the oscilloscope.
Page 83 Maintenance Cleaning Procedure, Interior. To clean the oscilloscope interior, perform the following steps: 1. Blow off dust with dry, low-pressure, deionized air (approximately 9 psi). 2. Remove any remaining dust with a lint-free cloth dampened in isopropyl alcohol (75% solution) and then wipe with a lint-free cloth dampened with warm deionized water.
Page 84: Removal And Installation Procedures
Maintenance Removal and Installation Procedures This section describes how to remove and install the major mechanical and electrical modules. It provides the following information: H Required Tools on page 6- -6 describes the tools needed to perform the procedures. H List of Modules on page 6- -5 describes where to locate a list of replaceable modules.
Page 85: Summary Of Procedures
Maintenance Summary of Procedures Complete disassembly is best achieved by following the procedures in the order given in Table 6- -2 . Table 6- - 2: List of procedures Procedure Begins on page Rear Feet 6--7 Flip Feet 6--9 Front-Panel Knobs 6--10 Power Button 6--10...
Page 86: Figure 6- -1: Removing The Rear Feet
Maintenance Rear Feet You will need a flat-blade screwdriver to remove the rear feet. Removal. To remove the rear feet, refer to Figure 6- -1 and follow these steps: 1. Place the oscilloscope face down on a soft surface such as an anti-static mat. 2.
Page 87: Figure 6- -2: Installing The Rear Feet
Maintenance Installation. To install the rear feet, refer to Figure 6- -2 and follow these steps: 1. Place the oscilloscope face down on a soft surface such as an anti-static mat. 2. Align the slots of the rear foot with the guides in the rear case and press the foot in.
Page 88: Flip Feet
Maintenance Flip Feet You will need a pair of needle-nose pliers to remove the flip feet. Removal. To remove the flip feet, refer to Figure 6- -3 and follow these steps: 1. Place the oscilloscope face down on a soft surface such as an anti-static mat. 2.
Page 89: Front-Panel Knobs
Maintenance Installation. To install the flip feet, refer to Figure 6- -3 and follow these steps: 1. Place the oscilloscope face down on a soft surface such as an anti-static mat. 2. Hold the flip foot with the smooth side facing down. 3.
Page 90: Rear Case
Maintenance 4. Remove the four screws located on the rear case. Tilt the handle to gain better access to the top two screws. 5. Lift the rear case off of the oscilloscope. Remove rear case screws (4) Rear case ESD Grounding ears Figure 6- - 4: Removing and installing the rear case 6- - 11 TDS1000 and TDS2000 Series Digital Storage Oscilloscopes Service Manual...
Page 91 Maintenance Installation. Use this procedure to install the rear case. 1. Place the oscilloscope face down on a soft surface (such as an anti-static mat). 2. Place the rear case onto the assembled oscilloscope and ensure that: H All of the edges align with the front case. H The ESD grounding ears align with the rear case slots.
Page 92: Figure 6- -5: Aligning The Oscilloscope Rear Case
Maintenance Rear case slots (4) ESD grounding ears are properly aligned with the rear case slots when they are visible in approximately one half the width of the slots. Main board notches ESD grounding ears (4) Figure 6- - 5: Aligning the oscilloscope rear case 6- - 13 TDS1000 and TDS2000 Series Digital Storage Oscilloscopes Service Manual...
Page 93: Front Feet
Maintenance Front Feet You will need a torque-limiting Torx T-15 screwdriver and pliers for this procedure. Removal. First, remove the power button and rear case using the procedures on page 6- -10. Then, slide the front feet out of the front case as shown in Figure 6- -6. Installation.
Page 94: Figure 6- -7: Removing The Power Supply Module
Maintenance Power Supply Module Use a torque-limiting Torx T-15 screwdriver and pliers for this procedure. Removal. To remove the module, refer to Figure 6- -7 and follow these steps: 1. Remove the power button and rear case using the procedures on page 6- -10. 2.
Page 95: Power Supply Module
Maintenance Installation. To install the power supply module, refer to Figure 6- -8 and follow these steps: 1. Align and place the power supply module into the internal assembly. 2. Install the four screws. Do not put a screw into the empty hole in Figure 6- -8. 3.
Page 96: Internal Assembly
Maintenance Internal Assembly You will need a torque-limiting Torx T-15 screwdriver and a flat-blade screw- driver for this procedure. Removal. To remove the assembly, refer to Figure 6- -9 and follow these steps: 1. Remove the front-panel knobs, power button, and rear case using the procedures on page 6- -10.
Page 97 Maintenance Installation. To install the internal assembly, refer to Figure 6- -9 and follow these steps: 1. Use the installation procedure for each module removed to reassemble the oscilloscope. 2. Place the internal assembly into the front case. 3. Install the four screws to attach the internal assembly to the front case. 6- - 18 TDS1000 and TDS2000 Series Digital Storage Oscilloscopes Service Manual...
Page 98: Display Cable
Maintenance Display Cable You will need a torque-limiting Torx T-15 screwdriver and pliers for this procedure. Removal. To remove the display cable, refer to Figure 6- -10 and follow these steps: 1. Remove the power button and rear case using the procedures on page 6- -10. 2.
Page 99: Figure 6- -11: Installing The Display Cable
Maintenance Installation. To install the display cable, refer to Figure 6- -11 and follow these steps: 1. Remove the display module using the procedure on page 6- -24. 2. Attach the display cable to the appropriate connector on the display module at the location shown in Figure 6- -11: 12-pin for the monochrome display, and 15-pin for the color display.
Page 100: Front-Panel Cable
Maintenance Front-Panel Cable You will need a torque-limiting Torx T-15 screwdriver and pliers for this procedure. Removal. To remove the front-panel cable, refer to Figure 6- -12 and follow these steps: 1. Remove the power button and rear case using the procedures on page 6- -10. 2.
Page 101: Main Board Module
Maintenance Installation. To install the front-panel cable, refer to Figure 6- -12 and follow these steps: 1. Connect the front-panel cable to the front-panel module at J1 through the appropriate slot on the chassis. 2. Twist the cable two revolutions to keep it from contact with the boards and chassis, and secure using the right cable tie.
Page 102: Figure 6- -13: Main Board Removal
Maintenance Front-panel connector Main board module Display connector Power supply connector Internal assembly Remove Main board screws (2) Remove hex nuts and lock washers Figure 6- - 13: Main board removal Installation. To install the main board module, refer to Figure 6- -13 and follow these steps: 1.
Page 103: Display Module
Maintenance Display Module You will need a torque-limiting Torx T-15 screwdriver and pliers for this procedure. Removal. To remove the display module, refer to Figure 6- -14 and follow these steps: 1. Remove the power button and rear case using the procedures on page 6- -10. 2.
Page 104: Figure 6- -15: Installing The Display Module
Maintenance Installation. To install the display module, refer to Figure 6- -15 and follow these steps: 1. Reconnect the display cable at J201 on the main board by pushing the cable straight down into the connector. 2. Route the display ribbon cable through the opening in the chassis. For more information, see the display cable procedure on page 6- -19.
Page 105: Front-Panel Module
Maintenance Front-Panel Module You will need a torque-limiting Torx T-15 screwdriver and a flat-blade screw- driver for this procedure. Removal. To remove the front-panel module, refer to Figure 6- -16 and follow these steps: 1. Remove the power button and rear case using the procedures on pages 6- -10. 2.
Page 106: Figure 6- -17: Installing The Front-Panel Module
Maintenance Installation. To install the front-panel module, refer to Figure 6- -17 and follow these steps: 1. Reconnect the front-panel cable at J202 on the main board by pushing the cable straight down into the connector. 2. Route the front-panel cable through the opening in the internal assembly. For more information, see the procedure on page 6- -21.
Page 107: Keypad
Maintenance Keypad You will need a torque-limiting Torx T-15 screwdriver for this procedure. Removal. To remove the switch keypad, refer to Figure 6- -18 and follow these steps: 1. Remove the power button and rear case using the procedures on page 6- -10. 2.
Page 108 Maintenance Installation. To install the switch keypad, refer to Figure 6- -18 and follow these steps: 1. Place the front case face down on a soft surface. 2. Align the switch keypad into the front case using the guide posts and the holes in the keypad.
Page 109 Maintenance Front Case You will need a torque-limiting Torx T-15 screwdriver for this procedure. Removal. To remove the front case, follow these steps: 1. Remove the power button and rear case using the procedures on page 6- -10. 2. Remove the entire internal assembly from the front case using the procedure on page 6- -17.
Page 110: Troubleshooting
You may need the the following tools and equipment to troubleshoot the Equipment oscilloscope: Tools and equipment Example Oscilloscope with 1X/10X and 100X probes Tektronix TDS1000- or TDS2000-series oscilloscope with standard accessory 1X/10X probe (P2200) and optional 100X probe (P5100 or P5200) 3.5 or greater digit DMM Troubleshooting Tree To isolate a problem to a specific troubleshooting procedure, use the trouble- shooting tree in Figures 6- -19, 6- -20, and 6- -21.
Page 111: Figure 6- -19: Oscilloscope Troubleshooting Tree (1
Maintenance Turn on power From Figure 6-21 Does screen To Figure 6-21 lighten? boot up screen? Put scope or frequency counter on probe comp Errors? To Figure 6-20 Replace main 1 kHz? board Front panel problems? To Figure 6-20 Verify LCD connector and cable values Run probe check...
Page 112: Figure 6- -20: Oscilloscope Troubleshooting Tree (2
Maintenance Module Reinstall module errors? From Figure 6-19 Check cabling to main board. Able to run Verify power Replace cable; front panel supply voltages From Figure front panel or main tests? 6-19 board Power Disconnect supplies OK? power supply Run front panel tests in service menu Verify power...
Page 113: Figure 6- -21: Oscilloscope Troubleshooting Tree (3
Maintenance To Figure 6-19 Attach power Power cord From Figure 6-19 cord attached? Open case Reinstall case Replace power Fuse OK? supply Attach backlight Backlight cable cable attached? Using a high voltage 100X probe test voltages on backlight connectors ~50 kHz Replace display >700 V pk--pk...
Page 114: Troubleshooting Tree
Maintenance PROBE COMP Output When the oscilloscope is on and operating properly, the PROBE COMP output should generate a square wave, approximately 5 V in amplitude, at a 1 kHz frequency. Use the oscilloscope and set the Attenuation switch to 10X on the P2100 probe to probe this output.
Page 115: Troubleshooting The Display
Maintenance Maximum J101 J101 Derived Current power return Supply Voltage range* supplies Draw pins pins , ∼50 kHz Backlight >500 V pk-pk (mono- chrome or color) With 3 W minimum load; still functions with no load. 3. If all of the voltages are present, the main board is probably defective. Replace it.
Page 116 Maintenance exploded diagrams in Replaceable Parts for the location and orientation of the connector on the main board. Signal at J201 Description, Monochrome Description, Color Pin 1 (marked No fixed pattern. Depends upon No fixed pattern. Depends upon with display data. display data.
Page 117: Troubleshooting The Backlight
Maintenance 4. If all the signals are present, the display module is probably defective. Replace it. 5. If all or some of the signals are missing, turn off the oscilloscope and disconnect the display cable at J201 on the main board. Carefully pull the cable straight up from the connector to avoid damage.
Page 118: Figure 6- -22: Measuring The Backlight Voltage
Maintenance AC ground lug Backlight voltage test points Backlight voltage test points Figure 6- - 22: Measuring the backlight voltage 6. Add the results of both readings. If a signal greater than 1400 V pk-pk present, the backlight is probably defective. Replace the display. If the signal is not present, proceed with step 7.
Page 119: Troubleshooting The Front Panel
Maintenance Troubleshooting the Front To troubleshoot a nonfunctional front panel, follow these steps: Panel 1. To execute the internal diagnostic tests, remove all input signals from the oscilloscope and enable the Service menu as described on page 5- -3. 2. Push the UTILITY button and push the Service option button. The following options appear: Menu Comments...
Page 120 Maintenance Menu Comments Warmup Timer Ensures a ten-minute warm-up time for the oscilloscope before executing the calibration procedure. Stop Test Exits the front-panel test (Test FP) and the screen test (Test Screen). 5. Select Test FP to start the front-panel controls test. 6.
Page 121 Maintenance Signal at J202 (2-channel models) or Description J1 (4-channel models) 9 GND 0 V (ground) 10 FPDATA_34_P Front Panel Scan Data line B No fixed pattern. Stable when triggered from FPCLR_34_P. Pattern depends upon rotation of knobs being scanned. 11 FPCLR_34_P Front Panel Clock line B 405 kHz.
Page 122: Troubleshooting The Main Board
Maintenance Troubleshooting the Main To troubleshoot the main board, follow these steps: Board 1. Remove the rear case using the procedure Rear Case on page 6- -10. 2. Use the test oscilloscope to measure the voltages from the power supply module at J101 on the main board module.
Page 123: Using The Error Log
Table 6- - 3: List of error codes Error code Description Probable cause 0 DI Diagnostics internal error Contact Tektronix 1 DI ADG522 diagnostics failed Main board or power supply failure 2 DI PROM diagnostics failed Main board or power supply failure...
Page 124 Maintenance Clearing the Error Log. To clear the error log after fixing a problem, follow these steps: 1. Enable the Service menus as described on page 5- -3. 2. Push the UTILITY button and push the Service option button to display the Service menu.
Page 125: Repackaging Instructions
The oscilloscope should not move around inside of the carton when sealed. If the oscilloscope is being shipped to a Tektronix Service Center, enclose the following information: H The owner address...
Page 126 Diagrams...
Page 128 Diagrams This section describes the electrical operation of the TDS1000- and TDS2000- series oscilloscopes using the major circuit blocks or modules. Figure 7- -1 shows the oscilloscope module interconnections. The shaded area in Figure 7- -1 represents modules and circuits used only in four-channel oscilloscopes.
Page 129: Figure 7- -1: Tds1000 And Tds2000 Series Block Diagram
Diagrams Power Supply Display Front panel CH 1 Acq 1 Amp 1 Processor and Acquisition Amplifier Display -- A ASIC--A ASIC--A Acq 2 Amp 2 CH 2 Trigger Amp E Amplifier Extension ASIC--A Module Main Board Power CH 3 Acq 1 Amp 1 Acquisition Processor and...
Page 130: Replaceable Parts
Replaceable Parts...
Page 132: Parts Ordering Information
TDS2000-series oscilloscopes. Use this list to identify and order replacement parts. Parts Ordering Information Replacement parts are available through your local Tektronix field office or representative. Changes to Tektronix products are sometimes made to accommodate improved components as they become available and to give you the benefit of the latest improvements.
Page 133: Using The Replaceable Parts List
Items in this section are referenced by figure and index numbers to the exploded view illustrations that follow. Tektronix Part Number Use this part number when ordering replacement parts from Tektronix. 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 134: Mfr. Code To Manufacturer Cross Index
PORTLAND, OR 97214-4657 22670 GM NAMEPLATE INCORPORATED 2040 15TH AVE WEST SEATTLE, WA 98119-2783 80009 TEKTRONIX INC 14200 SW KARL BRAUN DR PO BOX 500 BEAVERTON, OR 97077-0001 TK1163 POLYCAST INC 14140 SW 72ND AVE SUITE 100 TIGARD, OR 97224...
Page 135: Table 8- -3: Replaceable Parts List
Replaceable Parts Table 8- - 3: Replaceable parts list Fig. & Tektronix part Serial no. Serial no. Mfr. Mfr. part num- index number effective discont’d Name & description code number 10-1 650--4348--00 FRAME ASSEMBLY; DISPLAY,MONO (TDS1000) 80009 650--4348--00 650--4349--00 FRAME ASSEMBLY; DISPLAY, COLOR (TDS2000)
Page 136 Replaceable Parts Table 8- - 3: Replaceable parts list (cont.) Fig. & Tektronix part Serial no. Serial no. Mfr. Mfr. part num- index number effective discont’d code number Name & description --18 174--4658--00 CA ASSY,SP; DISCRETE,26 AWG,5.5 L,FEMALE,1 X 12,0.059 TK6549 174--4658--00 (1.5 MM) CTR,DUAL ENDED,FRONT PANEL...
Page 137 Replaceable Parts Table 8- - 3: Replaceable parts list (cont.) Fig. & Tektronix part Serial no. Serial no. Mfr. Mfr. part num- index number effective discont’d code number Name & description 335--0712--00 MARKER,IDENT; LABEL,MKD TDS2024, PC FILM, 80009 335--0712--00 LEXAN,W/ADHESIVE BACK,SAFETY CONTROLLED...
Page 138: Figure 8- -1: Exploded Diagram
Replaceable Parts Figure 8- - 1: Exploded diagram 8- - 7 TDS1000 and TDS2000 Series Digital Storage Oscilloscopes Service Manual...
Page 139: Table 8- -4: Replaceable Standard Accessories
Table 8- -4 lists the replaceable standard accessories for the oscilloscope and the instrument options that included them in the original shipment. These accessories are not shown in Figure 8- -1. Table 8- - 4: Replaceable standard accessories Tektronix part number or nomencla- ture Description of accessory Passive 1X/10X probes...

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