Tektronix TDS3000 manual

Service Manual TDS3000 Series Digital Phosphor Oscilloscopes 071-0382-01 This document supports firmware version 2.00 and above. W arning The servicing instructions are for use by qualified personnel only . T o avoid personal injury , do not perform any servicing unless you are qualified to do so. Refer to all safety summaries prior to performing s[...]

Copyright T ektronix, Inc. All rights reserved. T ektronix 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. Printed in the U.S.A. T ektronix, Inc., P .O. Box 1000, W ilsonville, OR 97070–1[...]

W ARRANTY T ektronix warrants that this product will be free from defects in materials and workmanship for a period of three (3) years from the date of shipment. If any such product proves defective during this warranty period, T ektronix, at its option, either will repair the defective product without charge for parts and labor , or will provide a[...]

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TDS3000 Series Service Manual i T able of Contents General Safety Summary vii . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Service Safety Summary xi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preface xiii . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .[...]

T able of Contents ii TDS3000 Series Service Manual Maintenance Preparation 6–1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Preventing ESD 6–1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Inspection and Cleaning 6–2 . . . . .[...]

T able of Contents TDS3000 Series Service Manual iii List of Figures Figure 3–1: TDS3000 series block diagram 3–1 . . . . . . . . . . . . . . . . . . . . . Figure 6–1: Pulling the hub pin 6–8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Figure 6–2: Releasing the hub assembly 6–9 . . . . . . . . . . . . . . . . . . . . .[...]

T able of Contents iv TDS3000 Series Service Manual Figure 10–1: Exploded view , front case half 10–4 . . . . . . . . . . . . . . . . . . . . . Figure 10–2: Exploded view , LCD display 10–6 . . . . . . . . . . . . . . . . . . . . . . Figure 10–3: Exploded view , main board and disk drive 10–8 . . . . . . . . . . Figure 10–4: Exploded [...]

T able of Contents TDS3000 Series Service Manual v List of T ables T able 1–1: Specifications 1–1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . T able 6–1: Internal inspection check list 6–3 . . . . . . . . . . . . . . . . . . . . . . . T able 6–2: Removal and installation pr ocedures 6–6 . . . . . . . . . . . [...]

T able of Contents vi TDS3000 Series Service Manual[...]

TDS3000 Series Service Manual vii General Safety Summary Review the following safety precautions to avoid injury and prevent damage to this product or any products connected to it. T o avoid potential hazards, use this product only as specified. Use Proper Power Cord. Use only the power cord specified for this product and certified for the country [...]

General Safety Summary viii TDS3000 Series Service Manual A void Exposed Circuitry . Do not touch exposed connections and components when power is present. Do Not Operate With Suspected Failures. If you suspect there is damage to this product, have it inspected by qualified service personnel. Do Not Operate in Wet/Damp Conditions. Do Not Operate in[...]

General Safety Summary TDS3000 Series Service Manual ix CAUTION. Electr ostatic dischar ge (ESD) can damage components in the oscilloscope and its accessories. T o pr event ESD, observe these precautions when dir ected to do so. Use a Ground Strap . W ear a grounded antistatic wrist strap to discharge the static voltage from your body while install[...]

General Safety Summary x TDS3000 Series Service Manual[...]

TDS3000 Series Service Manual xi 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 [...]

Service Safety Summary xii TDS3000 Series Service Manual[...]

TDS3000 Series Service Manual xiii Preface This is the Service Manual for the following TDS3000 Series Digital Phosphor Oscilloscopes: TDS3012 TDS3014 TDS3032 TDS3034 TDS3052 TDS3054 This manual provides information to troubleshoot and repair the instrument to the module level. Related Manuals Additional documentation for the instrument is containe[...]

Preface xiv TDS3000 Series Service Manual Service Programs T ektronix offers calibration service and a program to extend repair coverage beyond the warranty period. These programs are cost-effective ways to maintain genuine T ektronix service for your instrument. Ask your T ektronix distributor for details. Contacting T ektronix Product Support For[...]

TDS3000 Series Service Manual 1–1 Specifications This appendix contains specifications for the TDS3000 series oscilloscopes. All specifications are guaranteed unless noted as “typical.” T ypical specifications are provided for your convenience but are not guaranteed. Specifications that are marked with the symbol are checked in Performance V [...]

Specifications 1–2 TDS3000 Series Service Manual T able 1–1: Specifications (cont.) Inputs Input coupling DC, AC, or GND Channel input remains terminated when using GND coupling. Input impedance, DC coupled 1 M ± 1% in parallel with 13 pF ± 2 pF , T ekProbe compatible 50 ± 1%; VSWR ≤ 1.5:1 from DC to 500 MHz, typical Maxi m u m voltag e at[...]

Specifications TDS3000 Series Service Manual 1–3 T able 1–1: Specifications (cont.) V ertical N u m b er o f chann e l s TDS3012, TDS3032, TDS3052 TDS3014, TDS3034, TDS3054 2 plus external trigger input 4 Digitizers 9-bit resolution, separate digitizers for each channel sample simultaneously SCA LE R ang e NC 1 M 50 (at B NC ) 1 mV/div to 10 V/[...]

Specifications 1–4 TDS3000 Series Service Manual T able 1–1: Specifications (cont.) V ertical P e ak d e t e ct o r Envelope pulse resp se p Minimum width of pulse with amplitude of ≥ 2 div to capture 50% or greater amplitude resp on se , ty p ical Sample rates ≤ 125 MS/s Sample rates ≥ 250 MS/s 1 ns 1/sample rate DC gain accuracy ± 2%, [...]

Specifications TDS3000 Series Service Manual 1–5 T able 1–1: Specifications (cont.) Horizontal Acquisition (horizon- tal) resolution Normal Fast trigger Record length 10,000 points 500 points Acquisition rate, maximum Up to 450 waveforms/s Up to 3,000 waveforms/s S a mp l e r at e r ang e Acquisition res- olution TDS3012 TDS3014 TDS3032 TDS3034[...]

Specifications 1–6 TDS3000 Series Service Manual T able 1–1: Specifications (cont.) T rigger Edg e t r igg er se s p Any channel, NOISE REJ coupled 3.5 times the DC-coupled limits se n s itivity , ty p ical Any channel, HF REJ coupled 1.5 times the DC-coupled limit from DC to 30 kHz, attenuates signals above 30 kHz Any channel, LF REJ coupled 1[...]

Specifications TDS3000 Series Service Manual 1–7 T able 1–1: Specifications (cont.) Display Display screen 6.5 in (165 mm) diagonal color liquid crystal Display resolution 640 horizontal by 480 vertical pixels Backlight intensity , typical 200 cd/m 2 Display color Up to 16 colors, fixed palette External display filter Scratch-resistant tempered[...]

Specifications 1–8 TDS3000 Series Service Manual T able 1–1: Specifications (cont.) Power sources AC line power Operates the oscilloscope and charges the optional internal battery Source voltage 90 V RMS to 250 V RMS , continuous range (CA T II) Source frequency 47 Hz to 440 Hz Power consump- tion 75 W maximum Battery power Optional accessory T[...]

Specifications TDS3000 Series Service Manual 1–9 T able 1–1: Specifications (cont.) Environmental Altitude Operating limit: 3000 m Nonoperating limit: 15,000 m Random vibration Operating: 0.31 g RMS from 5 Hz to 500 Hz, 10 minutes on each axis Nonoperating: 2.46 g RMS from 5 Hz to 500 Hz, 10 minutes on each axis Drop resistance, typi- cal Survi[...]

Specifications 1–10 TDS3000 Series Service Manual T able 1–1: Specifications (cont.) EMC certifications and compliances EMC Compliance: European Union Meets intent of Directive 89/336/EEC for Electromagnetic Compatibility . Compliance was demonstrated to the following specifications as listed in the Official Journal of the European Communities:[...]

Specifications TDS3000 Series Service Manual 1–1 1 T able 1–1: Specifications (cont.) Safety certifications and compliances EC Declaration of Conformity – Low V oltage Compliance was demonstrated to the following specification as listed in the Official Journal of the European Communities: Low V oltage Directive 73/23/EEC as ammended by 93/68/[...]

Specifications 1–12 TDS3000 Series Service Manual[...]

TDS3000 Series Service Manual 2–1 Operating Information This chapter provides an overview of the following topics: T ransporting the oscilloscope Connecting power and using the battery pack Installing an application module Installing a communication module Front-panel menus and controls Front- and rear-panel connectors Probe compensation Self cal[...]

Operating Information 2–2 TDS3000 Series Service Manual T ransporting the Oscilloscope When transporting the oscilloscope, wrap the cord around the handle as shown below . Use the supplied cord retainer if the power plug does not have a molded-in retainer . The oscilloscope front cover has a convenient place to store the Reference Manual. If you [...]

Operating Information TDS3000 Series Service Manual 2–3 Connecting Power T o connect a power cord, do these steps: 1. Open the strain relief and slip it over the power cord. 2. Snap the strain relief into its hole in the rear panel of the oscilloscope. 3. Connect the power cord to the power input connector . Y ou can operate the oscilloscope from[...]

Operating Information 2–4 TDS3000 Series Service Manual W ARNING. T o avoid electric shock, always connect the r ear-panel gr ound terminal to earth gr ound when operating the instrument fr om battery power . For safe operation, the oscilloscope chassis must remain at earth ground potential even when operating from battery power . W ithout a conn[...]

Operating Information TDS3000 Series Service Manual 2–5 T o install the optional battery pack, do these steps: 1. Open the battery compartment door on the rear panel and remove the accessory tray . Battery door (Opened) 2. Slide the battery into the compartment and press it in from both sides until you hear the latches click. 3. Press on both sid[...]

Operating Information 2–6 TDS3000 Series Service Manual The battery charges automatically when the oscilloscope is connected to line power . Y ou can also charge the battery with the optional external char ger (TDS3CHG). Configuration T ypical charging time Battery charging in oscilloscope with oscillo- scope turned on or off 18 hours Battery cha[...]

Operating Information TDS3000 Series Service Manual 2–7 Installing an Application Module CAUTION. T o avoid damage to the oscilloscope or application module, observe the ESD pr ecautions described on page ix. Optional application modules are available to extend the capability of your oscilloscope. Y ou can install up to four application modules a[...]

Operating Information 2–8 TDS3000 Series Service Manual 6. If the application module came with one or more floppy disks, insert the firmware upgrade floppy disk into the disk drive. If there is more than one floppy disk, insert firmware upgrade floppy disk number one into the disk drive. 7. Power on the oscilloscope. The oscilloscope determines w[...]

Operating Information TDS3000 Series Service Manual 2–9 Installing a Communication Module CAUTION. T o avoid damage to the oscilloscope or communication module, observe the ESD pr ecautions described on page ix. T o install one of the optional communications modules, do these steps: 1. T urn the oscilloscope power off. 2. Press down on the latchi[...]

Operating Information 2–10 TDS3000 Series Service Manual Front-Panel Menus and Controls The front panel has buttons and controls for the functions you use most often. The front panel has menus to access more specialized functions. T o use the menu system, follow the steps shown on the next two pages. 1. Push a dark-colored front-panel menu button[...]

Operating Information TDS3000 Series Service Manual 2–1 1 3. Push a side screen button to choose a menu item. If the menu item contains more than one choice, push the side screen button again to make the choice. 4. Certain menu choices require you to set a numerical value to complete the setup. Use the general purpose knob to adjust the parameter[...]

Operating Information 2–12 TDS3000 Series Service Manual Y ou can use the menu buttons to perform many functions in the oscilloscope. 2 1 4 36 5 UTILITY DISPLA Y CURSOR MEASURE SA VE/RECALL QUICKMENU SELECT COARSE 1. MEASURE. Performs automated measurements of waveforms. 2. CURSOR. Activates the cursors. 3. SA VE/RECALL. Saves and recalls setups [...]

Operating Information TDS3000 Series Service Manual 2–13 These dedicated buttons and controls generally control waveforms and cursors without the use of menus. WA VEFORM INTENSITY SCALE SCALE POSITION POSITION LEVEL COARSE UTILITY DISPLA Y CURSOR 1 2 34 5 6 7 8 13 10 12 11 9 14 15 16 18 17 19 SELECT MEASURE SA VE/RECALL QUICKMENU VERTICAL HORIZON[...]

Operating Information 2–14 TDS3000 Series Service Manual 12. W A VEFORM INTENSITY . Controls waveform intensity . 13. B TRIG. Activates the B trigger . Changes the trigger menu to set the B-trigger parameters. 14. DELA Y . Enables delayed acquisition relative to the trigger event. Use horizontal POSITION to set the amount of delay . 15. Horizonta[...]

Operating Information TDS3000 Series Service Manual 2–15 The following items may appear in the display; not all items are visible at any given time. Some readouts move outside the graticule area when menus are turned off. 1 8 7 11 2 3 4 5 9 10 13 12 6 1. W aveform baseline icons show the zero-volt level of the waveforms (ignoring the effect of of[...]

Operating Information 2–16 TDS3000 Series Service Manual 14 15 14. A triangle icon with the battery icon indicates that a battery is installed and battery power is in use. The battery icon shows the approximate charge level of the battery . See page 2–4 for important safety information. 15. A power-plug icon with the battery icon indicates that[...]

Operating Information TDS3000 Series Service Manual 2–17 1 2 5 43 7 6 1. Edge T rigger controls. Push these screen buttons to set trigger parameters for edge trigger . 2. T rigger controls if either B trigger or video trigger is selected. 3. Cursor control. Push this screen button to turn on cursors and select the cursor type. Push the SELECT but[...]

Operating Information 2–18 TDS3000 Series Service Manual Front-Panel Connectors 5V 1 2 CH 4 CH 3 CH 2 CH 1 1M , 13pF ≤ 300 VRMS CA Tl PROBE COMP 3 PROBE COMP 5V 2 1 EXT TRIG 50 ≤ 5VRMS 50 ≤ 5VRMS 1M , 13pF ≤ 300 VRMS CA Tl 1M , 13pF ≤ 300 VRMS CA Tl CH 2 CH 1 50 ≤ 5VRMS 1M , 17pF ≤ 300 VRMS CA Tl 1. PROBE COMP . Square wave signal s[...]

Operating Information TDS3000 Series Service Manual 2–19 Rear-Panel Connectors 1 5 4 2 3 1. Parallel printer port. Connect to a printer to make hard copies. 2. CAL switch. For use by authorized service personnel only . 3. DC power output. Provides accessory power . 4. Ground terminal. Connect to earth ground when using battery power . See page 2?[...]

Operating Information 2–20 TDS3000 Series Service Manual Probe Compensation Perform this adjustment to match your probe to the input channel. This should be done whenever you attach a passive probe for the first time to any input channel. 1. Connect the oscilloscope probe to channel 1. Attach the probe tip and reference lead to the PROBE COMP con[...]

Operating Information TDS3000 Series Service Manual 2–21 Self Calibration The self calibration routine lets you quickly optimize the oscilloscope signal path for maximum measurement accuracy . Y ou can run the routine anytime but you should always run the routine if the ambient temperature changes by 10 C or more. T o compensate the signal path, [...]

Operating Information 2–22 TDS3000 Series Service Manual[...]

TDS3000 Series Service Manual 3–1 Theory of Operation This chapter describes the electrical operation of the oscilloscope to the module level. Figure 3–1 shows the oscilloscope module interconnections. Power supply Battery board Main board J950 J500 J860 comm. module J810 J700 Front panel Input ports for application modules J900 Attenuator circ[...]

Theory of Operation 3–2 TDS3000 Series Service Manual Battery Board The battery board provides the following functions: Interfaces to the optional battery pack (powers the oscilloscope from the battery pack or charges the battery pack when the oscilloscope is connected to AC line). T urns on AC power to the oscilloscope. Converts 15 VDC from the [...]

Theory of Operation TDS3000 Series Service Manual 3–3 The power converter receives 15 VDC (or battery voltage) from the battery board and generates voltages for the analog and digital circuitry on the main board. Display Module The display module consists of a color liquid crystal display (LCD), a display driver , a pair of fluorescent back light[...]

Theory of Operation 3–4 TDS3000 Series Service Manual[...]

TDS3000 Series Service Manual 4–1 Performance V erification This chapter contains performance verification procedures for the specifications marked with the symbol. The following equipment, or a suitable equivalent, is required to complete these procedures. Description Minimum requirements Examples DC V oltage Source 3 mV to 4 V , ± 0.1% accurac[...]

Performance V erification 4–2 TDS3000 Series Service Manual T est Record Serial number Procedure performed by Date T est Passed Failed Self T est Performance checks Low limit T est result High limit C hann e l 1 D C me s reme 1 mV/div 99.25 mV 100.8 mV me a s u reme nt accuracy 2 mV/div –7.540 mV –6.460 mV r 5 mV/div –101.8 mV –98.24 mV 5[...]

Performance V erification TDS3000 Series Service Manual 4–3 Performance checks High limit T est result Low limit C hann e l 3 D C me s reme 1 mV/div 99.25 mV 100.8 mV me a s u reme nt accuracy 2 mV/div –7.540 mV –6.460 mV r 5 mV/div –101.8 mV –98.24 mV 50 mV/div 982.4 mV 1.018 V 50 mV/div 632.4 mV 667.6 mV 50 mV delta 340.5 mV 359.5 mV 90[...]

Performance V erification 4–4 TDS3000 Series Service Manual Performance V erification Procedures Before beginning these procedures, two conditions must first be met: The oscilloscope must have been operating continuously for ten minutes in an environment the meets the operating range specifications for temperature and humidity . Y ou must perform[...]

Performance V erification TDS3000 Series Service Manual 4–5 This test checks the DC voltage measurement accuracy in the average acquisition mode. 1. Set the DC voltage source output level to 0 V . 2. Connect the DC voltage source to the oscilloscope channel 1 input as shown below . DC voltage source Ch 1 TDS3000 Series Oscilloscope 3. Push the SA[...]

Performance V erification 4–6 TDS3000 Series Service Manual V ertical SCALE setting Invert setting Bandwidth limit setting Offset Input voltage Low limit High limit 1 mV/div Off 20 MHz 96.5 mV 100 mV 99.25 mV 100.8 mV 2 mV/div Off 20 MHz 0.0 V –7 mV –7.540 mV –6.460 mV 5 mV/div Off 20 MHz –82.5 mV –100 mV –101.8 mV –98.24 mV 50 mV/d[...]

Performance V erification TDS3000 Series Service Manual 4–7 This test checks the bandwidth for each channel. 1. Connect the output of the leveled sine wave generator to the oscilloscope channel 1 input as shown below . Leveled sine wave generator Ch 1 TDS3000 Series Oscilloscope 2. Push the SA VE/RECALL menu button. 3. Push the Recall Factory Set[...]

Performance V erification 4–8 TDS3000 Series Service Manual 18. Push the –m o r e– screen button until you can select the Pk-Pk measure- ment. 19. Set the vertical SCALE to 100 mV/div . 20. Set the output frequency of the leveled sine wave generator to 50 kHz . 21. Set the output amplitude of the leveled sine wave generator so the peak-to- pe[...]

Performance V erification TDS3000 Series Service Manual 4–9 This test checks the edge-trigger sensitivity for each channel. 1. Connect the output of the leveled sine wave generator to the oscilloscope channel 1 input as shown below . Leveled sine wave generator Ch 1 TDS3000 Series Oscilloscope 2. Push the SA VE/RECALL menu button. 3. Push the Rec[...]

Performance V erification 4–10 TDS3000 Series Service Manual 19. Set the output frequency of the leveled sine wave generator to the frequency shown in the table below . Oscilloscope model Frequency TDS3012, TDS3014 100 MHz TDS3032, TDS3034 300 MHz TDS3052, TDS3054 500 MHz 20. Set the output amplitude of the leveled sine wave generator so the peak[...]

Performance V erification TDS3000 Series Service Manual 4–1 1 This test checks the time base accuracy . 1. Connect the output of the leveled sine wave generator to the oscilloscope channel 1 input as shown below . Time mark generator Ch 1 TDS3000 Series Oscilloscope 2. Push the SA VE/RECALL menu button. 3. Push the Recall Factory Setup screen but[...]

Performance V erification 4–12 TDS3000 Series Service Manual 15. T urn the horizontal POSITION control counter-clockwise to set the delay to exactly 10 ms . 16. Set the horizontal scale to 1 s/div . 17. Check that the rising edge of the marker crosses the center horizontal graticule line within ± 2 divisions of center graticule. NOTE . One divis[...]

TDS3000 Series Service Manual 5–1 Adjustment Procedures This chapter contains the factory adjustment procedures for the oscilloscope. Only qualified personnel should perform service procedures. Read this Service Safety Summary and the General Safety Summary before performing any service procedures. Also refer to the chapter Operating Information [...]

Adjustment Procedures 5–2 TDS3000 Series Service Manual Overview of the Adjustment Process The oscilloscope is protected from inadvertently changing factory adjustments by a rear-panel switch. T o perform the factory adjustment, you must push and hold the switch while you power on the oscilloscope. Before performing adjustment procedures, you mus[...]

Adjustment Procedures TDS3000 Series Service Manual 5–3 Signal Connections The adjustment procedure requires three types of equipment setups if you are adjusting a four-channel oscilloscope, or four types if you are adjusting a two-channel oscilloscope. For each step of the procedure, the oscilloscope display indicates which setup is the correct [...]

Adjustment Procedures 5–4 TDS3000 Series Service Manual NOTE . If the DC voltage sour ce you ar e using has an output head, use a female-to-female BNC adapter and a short BNC cable to make the connection to the first BNC tee. When you ar e given the instruction to apply a 0 V DC signal, turn off or gr ound the output of the DC voltage sour ce to [...]

Adjustment Procedures TDS3000 Series Service Manual 5–5 During the procedure a fast rise step signal needs to be applied simultaneously to all channels. A typical on-screen instruction might read: Use the ’Apply DC V oltage to Channels’ equipment setup shown on page 5–3. NOTE . Make sur e that the coax cable connection path length is the sa[...]

Adjustment Procedures 5–6 TDS3000 Series Service Manual Factory Adjustment Procedure T o perform the factory adjustment procedure, do these steps: 1. Locate the hole that provides access to the CAL switch on the rear panel. CAL 2. Put the adjustment tool into the CAL switch hole. Push and hold the CAL switch in while you power on the oscilloscope[...]

Adjustment Procedures TDS3000 Series Service Manual 5–7 11 . Connect signals from the DC voltage source, leveled sine wave, or fast-rise generator as instructed by the oscilloscope display . After you connect the correct signal, push the OK Do Next Step screen button to continue the process. NOTE . The oscilloscope adjusts itself automatically us[...]

Adjustment Procedures 5–8 TDS3000 Series Service Manual[...]

TDS3000 Series Service Manual 6–1 Maintenance This chapter contains the information needed to do periodic and corrective maintenance on the oscilloscope. The following sections are included: Pr eparation refers you to important information contained elsewhere in this manual. Pr eventing ESD provides general information on preventing damage to int[...]

Maintenance 6–2 TDS3000 Series Service Manual 3. Discharge the static voltage from your body by wearing a grounded antistatic wrist strap while handling these modules. Do service of static-sensitive modules only at a static-free work station. 4. Nothing capable of generating or holding a static charge should be allowed on the work station surface[...]

Maintenance TDS3000 Series Service Manual 6–3 Inspection — Exterior . Inspect the outside of the oscilloscope for damage, wear, and missing parts. An oscilloscope that appears to have been dropped or otherwise abused should be checked thoroughly to verify correct operation and performance. Immediately repair defects that could cause personal in[...]

Maintenance 6–4 TDS3000 Series Service Manual T able 6–1: Internal inspection check list (Cont.) Item Repair action Inspect for Solder connections Cold solder or rosin joints. Resolder joint and clean with isopropyl alcohol. Wiring and cables Loose plugs or connectors. Burned, broken, or frayed wiring. Firmly seat connectors. Repair or replace [...]

Maintenance TDS3000 Series Service Manual 6–5 Removal and Installation Procedures This section describes how to remove and install the major mechanical and electrical modules. It provides the following information: List of Modules on page 6–5 describes where to locate a list of replaceable modules. Summary of Pr ocedur es on page 6–6 lists th[...]

Maintenance 6–6 TDS3000 Series Service Manual T able 6–2 lists the removal and installation procedures in order of increasing complexity . W ithin each procedure, only perform the steps that are required to access the modules that need repair . T able 6–2: Removal and installation procedures Procedure Modules accessed Begins on page Handle Ha[...]

Maintenance TDS3000 Series Service Manual 6–7 Y ou will need the following tools to remove and replace all the modules in the oscilloscope. T orque-limiting screwdriver , 12 in ⋅ lb (1.3 N ⋅ m) range with T orx  T -10 and T -15 tips (If you are using a magnetic screwdriver with interchangeable bits, the T -15 bit must be a long bit, at lea[...]

Maintenance 6–8 TDS3000 Series Service Manual Metal pin Handle Hub Figure 6–1: Pulling the hub pin 5. Place the oscilloscope on its feet on soft surface (such as an anti-static mat), with the display-side hub facing you. 6. Lower the handle toward the rear into a horizontal position. The hub should rotate with the handle. 7. Pull outward on the[...]

Maintenance TDS3000 Series Service Manual 6–9 Rotate the handle Hub Pull on the handle Figure 6–2: Releasing the hub assembly 8. Locate the remaining hub on the opposite side of the oscilloscope. Place the oscilloscope with the remaining hub facing you. 9. Rotate the handle downward to its lowest position. 10. Use the needle-nose pliers to pull[...]

Maintenance 6–10 TDS3000 Series Service Manual 11 . Raise the handle to its full upright position. The hub should rotate with the handle. 12. Pull outward on the handle to release the remaining hub assembly . Y ou may need to rotate the handle back and forth slightly to help release the hub assembly . 13. Grasp the handle from both sides and remo[...]

Maintenance TDS3000 Series Service Manual 6–1 1 8. While pressing in on the hub assembly with your fingers, rotate the handle to its full upright position. The hub assembly should rotate with the handle. 9. Use the 1 8 inch flat-bladed screwdriver to push the metal pin in to lock the hub assembly . 10. V erify that both hub assemblies do not rota[...]

Maintenance 6–12 TDS3000 Series Service Manual 6. Release the small communication module guide tab by lifting the chassis, and then remove the communication module guide. See Figure 6–4. Ta b Communication module guide Figure 6–4: Communication module guide 7. Carefully open the connector that captures the disk drive flex cable and disconnect[...]

Maintenance TDS3000 Series Service Manual 6–13 Pins are face down Disk drive Figure 6–5: Flex cable to the disk drive Installation. Use this procedure to install the disk drive, communication module guide, feet, rear case, and communication module cover . 1. Place the oscilloscope face down on soft surface (such as an anti-static mat), with the[...]

Maintenance 6–14 TDS3000 Series Service Manual Disk drive Bezel Figure 6–6: Removing the bezel from a new disk drive 5. Carefully open the connector on the disk drive, insert the flex connector , and then close the connector . See Figure 6–5. 6. Place the rear case over the oscilloscope chassis and lower it. Be sure that the disk drive is cap[...]

Maintenance TDS3000 Series Service Manual 6–15 Y ou will need a T orx  T -15 screwdriver to remove the rear chassis. Y ou will need a 3 16 inch nut driver to remove the parallel printer port cable. Removal. Use this procedure to remove the rear chassis, battery board, external power jack, power supply , power supply bracket, line filter , fan,[...]

Maintenance 6–16 TDS3000 Series Service Manual 3. Disconnect the external power cable from the battery board. See Figure 6–7. 4. Remove the three screws that secure the rear chassis to the front chassis. 5. Lift the rear chassis assembly from the front chassis. Thread the external power cable through the hole in the front chassis. STOP . If you[...]

Maintenance TDS3000 Series Service Manual 6–17 Installation. Use this procedure to install the fan, line filter , parallel printer port cable, external power jack, power supply , battery board, and rear chassis. Skip the steps for modules that are already installed. Bend the tabs External power cable Rear chassis Fan cable hole Label Key on Power[...]

Maintenance 6–18 TDS3000 Series Service Manual Green wire (ground conductor) Blue wire Black wire Line power conductor Power supply board Green wire Line filter Figure 6–9: Installing the line filter and line power cable 2. Insert the line filter into the rear chassis and secure it with two screws. The ground conductor should face the bottom of[...]

Maintenance TDS3000 Series Service Manual 6–19 8. Attach the DC power cable to the power supply . 9. Connect the fan power cable to the battery board at J170. 10. Connect the DC power cable to the battery board at J100. 11 . Snap the battery board onto the post on the rear chassis. 12. Install two screws to secure the battery board to the rear ch[...]

Maintenance 6–20 TDS3000 Series Service Manual Y ou will need a 1 8 inch flat-bladed screwdriver and a T orx  T -15 screwdriver to remove the main board. Removal. Use this procedure to remove the disk drive cable and main board. 1. Place the oscilloscope assembly face down on a soft surface (such as an anti-static mat), with the bottom facing [...]

Maintenance TDS3000 Series Service Manual 6–21 3. Grasp and pull up on the inverter board cable wires to disconnect the cable from J950 on the main board. See Figure 6–10. 4. Use the 1 8 inch flat-bladed screwdriver to carefully lift the display cable from connector J500 on the main board. See Figure 6–10. 5. Grasp and pull up on the front-pa[...]

Maintenance 6–22 TDS3000 Series Service Manual Installation. Use this procedure to install the main board and reconnect cables. 1. Place the oscilloscope front-panel assembly face down on soft surface (such as an anti-static mat), with the bottom facing you. 2. W ith the front-panel cable dressed out of the way , lower the main board into the fro[...]

Maintenance TDS3000 Series Service Manual 6–23 Y ou will need a T orx  T -10 screwdriver to remove the front chassis. Removal. Use this procedure to remove the front chassis and the display module. 1. Place the oscilloscope face down on a soft surface (such as an anti-static mat), with the bottom facing you. 2. Use the T orx  T -10 screwdri[...]

Maintenance 6–24 TDS3000 Series Service Manual NOTE . It is possible to r emove the inverter boar d without removing the fr ont chassis or display module. If this is the only thing you need to do, skip to step 1 on page 6–26. 4. Place the front chassis with the display facing you. See Figure 6–13. 5. Use your thumbs to slide the top display m[...]

Maintenance TDS3000 Series Service Manual 6–25 Installation. Use this procedure to install the display module into the front chassis and install the front chassis. 1. Place the front chassis with the display facing you. See Figure 6–13. 2. Push the display module tabs through the chassis holes. 3. Use your thumbs to slide all four display modul[...]

Maintenance 6–26 TDS3000 Series Service Manual 7. Insert the front chassis assembly into the oscilloscope. Insert the right end of the front chassis slightly ahead of the left end to clear a slight interference at the right end of the chassis. 8. Route the front-panel cable through the notch located on the bottom edge of the front chassis. See Fi[...]

Maintenance TDS3000 Series Service Manual 6–27 3. Push the tab and lift the top end of the inverter board to clear the inverter chassis. See Figure 6–16A. 4. Lift and rotate the bottom end of the inverter board to 45 ° -60 ° angle, then slide the inverter board clear of the chassis. See Figure 6–16B. 5. Use the 1 8 inch flat-bladed screwdri[...]

Maintenance 6–28 TDS3000 Series Service Manual 6. Use your thumb to push the tab on the top right side of the display chassis until the tab clears the display assembly . Then push the top-right corner of the display , from the front of the display , to clear the tab. Repeat for the other display chassis tab. See Figure 6–17. Push tab Display mo[...]

Maintenance TDS3000 Series Service Manual 6–29 8. Use your thumb to push down the tab next to a back light tube, at the same time pulling the back light tube cable to slide the back light out of the display . See Figure 6–18. Push tab down Backlight tubes (2) Display module Figure 6–18: Remove back light tube[...]

Maintenance 6–30 TDS3000 Series Service Manual Installation. Use this procedure to reassemble the display module. 1. Insert backlight tubes into the display , with the open side of the tube toward the center of the display , until the tube clicks into place. The backlight tubes slide easily into the display when they are aligned correctly . 2. Pl[...]

Maintenance TDS3000 Series Service Manual 6–31 6. Insert the inverter board assembly into the slots at the top and bottom of the display chassis. The high-voltage shield end of the board is at the top of the display . Push firmly until the tabs click. 7. Insert the display back light cable connectors into the inverter board. Position the back lig[...]

Maintenance 6–32 TDS3000 Series Service Manual 3. Place the oscilloscope face down on a soft surface (such as an anti-static mat), with the bottom facing you. 4. Disconnect the bezel button flex circuit from J200 by gently pulling the flex circuit out of the connector . Gently remove the flex circuit from the front panel and place on a clean prot[...]

Maintenance TDS3000 Series Service Manual 6–33 6. Remove the front-panel and bezel button keypads by lifting them away from the front panel. Do not touch the keypad contacts or place them on a contaminated surface. See Figure 6–22. Front panel keypad Bezel keypad Figure 6–22: Remove front-panel keypads[...]

Maintenance 6–34 TDS3000 Series Service Manual Installation. Use this procedure to reinstall the front-panel board. 1. Check that the front-panel lock nuts are still in the front panel before installing the front panel keypad and board. These nuts are pressure-fit and can come loose. See Figure 6–23. Make sure lock nuts are in place Figure 6–[...]

Maintenance TDS3000 Series Service Manual 6–35 T roubleshooting This section contains information and procedures to help you isolate a defective module in a TDS3000 series oscilloscope. W ARNING. Befor e doing this or any other pr ocedur e in this manual, read the General Safety Summary and Service Safety Summary found at the beginning of this ma[...]

Maintenance 6–36 TDS3000 Series Service Manual T roubleshooting Procedure Figures 6–24 through 6–31 are troubleshooting procedure flowcharts. Use them to troubleshoot an instrument failure. Begin with Figure 6–24. NOTE . Befor e performing the tr oubleshooting procedur e, remove the instrument cabinet (see page 6–5). Ye s No Done. Power o[...]

Maintenance TDS3000 Series Service Manual 6–37 Continued from Figure 6–24. Use DMM to measure voltages on front-panel BNC connector pads (see BNC connector diagram at right). –15 VDC ( 1.2 V) –5 VDC ( 0.15 V) +5.1 VDC ( 0.15 V) +15 VDC ( 1.2 V) Any front panel BNC connector Proceed to Figure 6–30. Ye s Are all voltages within tolerance? N[...]

Maintenance 6–38 TDS3000 Series Service Manual Reconnect loose cables. Return to top of Figure 6–24. No Ye s Is there +15 volts between pins 13 and 18? Measure for +15 V DC ( ± 0.5 V) between line 13 (+) and line 18 (–) of the disconnected cable. (see figure at right) !W ARNING! Be careful when measuring near the AC power supply , as there a[...]

Maintenance TDS3000 Series Service Manual 6–39 Measure voltages on disconnected cable as shown in diagram at right. Power off oscilloscope. Disconnect AC power cord. Reconnect J100 cable to the battery board. Disconnect J900 cable from the main board. Connect AC power cord. Power on oscilloscope. Replace the Battery board module. No Ye s Are volt[...]

Maintenance 6–40 TDS3000 Series Service Manual Power off oscilloscope. Disconnect AC power cord. Reconnect J700 cable to main board. Disconnect J950 cable from main board. Connect AC power cord. Power on oscilloscope. Measure voltages on connected J900 cable as shown in Figure 6–27 (page 6–39). Measure voltages on connected J900 cable as show[...]

Maintenance TDS3000 Series Service Manual 6–41 Measure voltages on connected J900 cable as shown in Figure 6–27 (page 6–39). Power off oscilloscope. Disconnect AC power cord. Disconnect J500 cable from the main board (Figure 6–10 on page 6–20). Connect AC power cord. Power on oscilloscope. Replace Display module. No Ye s Are voltages with[...]

Maintenance 6–42 TDS3000 Series Service Manual This procedure assumes that the oscilloscope displays power-up diagnostics messages. Push UTILITY . Push System to select Diags. Push OK Confirm Run T est. Determine failure. Use table to select module to replace. Oscilloscope is operating OK. Does the power-up screen report any errors? Ye s No Faile[...]

Maintenance TDS3000 Series Service Manual 6–43 Unpacking and Repacking Instructions This section contains the information needed to unpack the oscilloscope and repack it for shipment or storage. The oscilloscope and its standard accessories are carefully packed at the factory in a shipping carton. If, upon receipt, damage to the shipping carton i[...]

Maintenance 6–44 TDS3000 Series Service Manual[...]

TDS3000 Series Service Manual 7–1 Options The TDS3000 series options, listed in T able 7–1, provide power cords and documentation packages for international customers. T able 7–1: TDS3000 Series options Option Description A1 Substitute universal European power cord (220 V) A2 Substitute United Kingdom power cord (240 V) A3 Substitute Australi[...]

Options 7–2 TDS3000 Series Service Manual[...]

TDS3000 Series Service Manual 8–1 Electrical Parts List Refer to the Mechanical Parts List chapter for a complete listing and description of replaceable parts for the oscilloscope.[...]

Electrical Parts List 8–2 TDS3000 Series Service Manual[...]

TDS3000 Series Service Manual 9–1 Diagrams See Figure 3–1 on page 3–1 for a block/interconnect diagram of the oscilloscope. There are no additional diagrams in this chapter .[...]

Diagrams 9–2 TDS3000 Series Service Manual[...]

TDS3000 Series Service Manual 10–1 Mechanical Parts List This chapter contains a list of the replaceable modules for the TDS3000 series oscilloscope. Use this list to identify and order replacement parts. Parts Ordering Information Replacement parts are available through your local T ektronix field office or representative. Changes to T ektronix [...]

Mechanical Parts List 10–2 TDS3000 Series Service Manual Modules can be serviced by selecting one of the following three options. Contact your local T ektronix service center or representative for repair assistance. Module Exchange. In some cases you may exchange your module for a reman- ufactured module. These modules cost significantly less tha[...]

Mechanical Parts List TDS3000 Series Service Manual 10–3 The table titled Manufacturers Cross Index shows codes, names, and addresses of manufacturers or vendors of components listed in the parts list. Manufacturers cross index Mfr . code Manufacturer Address City , state, zip code 00779 AMP INC. CUSTOMER SER VICE DEPT PO BOX 3608 HARRISBURG, P A[...]

Mechanical Parts List 10–4 TDS3000 Series Service Manual 1 2 3 4 5 6 7 8 9 10 Figure 10–1: Exploded view , front case half[...]

Mechanical Parts List TDS3000 Series Service Manual 10–5 Replaceable parts list Fig. & index number T ektronix part number Serial no. effective Serial no. discont’d Qty Name & description Mfr . code Mfr. part number 10–1–1 050–3261–00 1 P ARTS REPL KIT :2 CHANNEL FRONT CASE ASSY ,W/LABELS,TDS3012/TDS3032/TDS3052 80009 050–3261[...]

Mechanical Parts List 10–6 TDS3000 Series Service Manual 1 2 3 4 5 6 7 8 9 10 11 12 Figure 10–2: Exploded view , LCD display[...]

Mechanical Parts List TDS3000 Series Service Manual 10–7 Replaceable parts list Fig. & index number T ektronix part number Serial no. effective Serial no. discont’d Qty Name & description Mfr . code Mfr. part number 10-2-1 441–2144–00 1 CHASSIS:FRONT ,0.050 AL,13.020 X 2.860 0J9P9 441–2144–00 10-2-2 380–1 1 17–00 1 HOUSING,D[...]

Mechanical Parts List 10–8 TDS3000 Series Service Manual 1 2 3 4 5 6 2 Figure 10–3: Exploded view , main board and disk dive[...]

Mechanical Parts List TDS3000 Series Service Manual 10–9 Replaceable parts list Fig. & index number T ektronix part number Serial no. effective Serial no. discont’d Qty Name & description Mfr . code Mfr. part number 10-3-1 174–3762–00 1 CA ASSY , SP:FLEX,DISPLA Y ,FLX,33 AWG,0.5MM CTR,5.0 L,TIN/LEAD PLA TED CONDUCTORS X 31 POS,LCD 0[...]

Mechanical Parts List 10–10 TDS3000 Series Service Manual 1 2 3 4 5 6 7 8 9 10 11 12 13 14 3 3 3 15 16 Figure 10–4: Exploded view , circuit board assembly and fan[...]

Mechanical Parts List TDS3000 Series Service Manual 10–1 1 Replaceable parts list Fig. & index number T ektronix part number Serial no. effective Serial no. discont’d Qty Name & description Mfr . code Mfr. part number 10-4-1 679–4090–00 1 CKT BD SUBASSY :POWER SUPPL Y ,389–2389–XX WIRED 80009 679–4090–00 10-4-2 441–2145–[...]

Mechanical Parts List 10–12 TDS3000 Series Service Manual 1 2 3 4 5 6 7 8 9 Figure 10–5: Exploded view , rear case half[...]

Mechanical Parts List TDS3000 Series Service Manual 10–13 Replaceable parts list Fig. & index number T ektronix part number Serial no. effective Serial no. discont’d Qty Name & description Mfr . code Mfr. part number 10-5-1 367–0498–00 1 HANDLE,CARR YING:14.5740 X 6.3230 7X318 367–0498–00 10-5-2 200–4415–00 1 COVER:OPTION MO[...]

Mechanical Parts List 10–14 TDS3000 Series Service Manual Accessories list (cont.) Fig. & index number Mfr . part number Mfr . code Name & description Qty Serial no. discont’d Serial no. effective T ektronix part number 020–2269–00 1 MANUAL,TECH:SET ,USER & REFERENCE, KOREAN,TDS30XX TK2548 020–2269–00 020–2270–00 1 MANUA[...]