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Maintenance

6--20

TPS2000 Series Digital Storage Oscilloscopes Service Manual

Troubleshooting

This section contains information and procedures to help you isolate a defective
module in the oscilloscope.

WARNING.

Before perform this or any other procedure in this manual, read the

General Safety Summary

and

Service Safety Summary

found at the beginning of

this manual. Also, to prevent possible injury or damage to electrical components,
read

Preventing ESD

on page 6--1.

If you replace the acquisition circuit board, you must adjust the oscilloscope after
repair. Refer to the chapter

Adjustment Procedures

on page 5--1.

You may need the the following tools and equipment to troubleshoot the
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)

DMM

3.5 or greater digit DMM

To isolate a problem to a specific troubleshooting procedure, use the trouble-
shooting tree in Figures 6--9 through 6--12.

Adjustment After Repair

Required Tools and

Equipment

Troubleshooting Tree

Содержание TPS2000 Series

Страница 1: ...nt supports firmware version 10 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 t...

Страница 2: ...and foreign patents issued and pending Information in this publication supercedes that in all previously published material Specifications and price change privileges reserved Tektronix Inc P O Box 50...

Страница 3: ...service center is located Customer shall be responsible for paying all shipping charges duties taxes and any other charges for products returned to any other locations This warranty shall not apply to...

Страница 4: ...nter is located Customer shall be responsible for paying all shipping charges duties taxes and any other charges for products returned to any other locations This warranty shall not apply to any defec...

Страница 5: ...Customer shall be responsible for paying all shipping charges duties taxes and any other charges for products returned to any other locations This warranty shall not apply to any defect failure or da...

Страница 6: ......

Страница 7: ...3 2 Acquisition System 3 2 Processing and Display System 3 3 Probe Compensation 3 3 Acquisition Board Power 3 3 Power Supply and Battery System 3 4 Display Module 3 4 Front Panel 3 4 Two Channel Osci...

Страница 8: ...Procedures 6 5 Preparation 6 5 List of Modules 6 5 Replacement Procedures 6 5 Tools Required 6 6 Rear Case 6 7 Fan 6 9 Backlight Inverter Board 6 9 IO Board 6 10 Front Panel Knob 6 11 Front Case 6 11...

Страница 9: ...Storage Oscilloscopes Service Manual iii Replaceable Parts Parts Ordering Information 10 1 Module Servicing 10 1 Using the Replaceable Parts List 10 2 Abbreviations 10 2 Mfr Code to Manufacturer Cross...

Страница 10: ...11 Figure 6 4 Removing the front case 6 13 Figure 6 5 Using a screwdriver to remove the Acquisition board 6 15 Figure 6 6 Removing the front panel module 6 16 Figure 6 7 Removing the display module 6...

Страница 11: ...pe international certifications and compliances 1 10 Table 1 9 P2220 Probe specifications 1 11 Table 1 10 P2220 Probe certifications and compliances 1 12 Table 1 11 P2220 Probe environmental character...

Страница 12: ...Table of Contents vi TPS2000 Series Digital Storage Oscilloscopes Service Manual...

Страница 13: ...the product manual for further ratings information before making connections to the product Use Proper Probe To avoid shock hazard use a properly rated probe for your measurement Floating Do not floa...

Страница 14: ...C61010 1 2001 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 stateme...

Страница 15: ...of this product unless another person capable of rendering first aid and resuscitation is present Disconnect Power To avoid electric shock disconnect the main power by means of the power cord or if p...

Страница 16: ...Service Safety Summary x TPS2000 Series Digital Storage Oscilloscopes Service Manual...

Страница 17: ...ion Table i Instrument user manuals Language User manual part number Programmer manual part number English 071 1441 XX 071 1075 XX French 071 1442 XX Italian 071 1443 XX German 071 1444 XX Spanish 071...

Страница 18: ...ocal laws or regulations For the location of a local battery recycler in the U S or Canada please contact RBRC 800 BATTERY Rechargeable Battery Recycling Corp 800 227 7379 P O Box 141870 www rbrc com...

Страница 19: ...ronix com Sales support 1 800 833 9200 select option 1 Service support 1 800 833 9200 select option 2 Technical support www tektronix com support 1 800 833 9200 select option 3 1 503 627 2400 6 00 a m...

Страница 20: ...Preface xiv TPS2000 Series Digital Storage Oscilloscopes Service Manual...

Страница 21: ...nteed unless noted typical Specifications that are marked with the n symbol are checked in the chapter Performance Verification Table 1 1 Oscilloscope general characteristics Acquisition Acquisition M...

Страница 22: ...illoscope may result If these values are exceeded damage to the oscilloscope may result Maximum Voltage Between BNC Reference and Earth Ground 600 Vrms CAT II or 300 Vrms CAT III using rated connector...

Страница 23: ...S2014 TPS2024 yp 3 5 ns 2 1 ns Peak Detect Response2 Captures 50 or greater amplitude of pulses 12 ns wide typical 50 s div to 5 s div in the center 8 vertical divisions n DC Gain Accuracy 3 for Sampl...

Страница 24: ...250 Position Range 2 5 ns div to 10 ns div 4 div s div to 20 ms g 25 ns div to 100 s div 4 div s div to 50 ms 250 s div to 10 s div 4 div s div to 50 s 25 s div to 50s div 4 div s div to 250 s Trigge...

Страница 25: ...mV for signals less than 2 V EXT 5 6 of setting 500 mV for signals less than 10 V EXT 10 6 of setting 1 V for signals less than 20 V SET LEVEL TO 50 typical Operates with input signals equal to or gr...

Страница 26: ...whichever is larger Equal Guard Band t 330 ns 5 guard band 5 1 16 5 ns t 330 ns guard band 16 5 ns Not Equal Guard Band t 330 ns 5 guard band 5 1 16 5 ns 165 ns t 330 ns guard band 16 5 ns 33 ns t 16...

Страница 27: ...is one year Table 1 2 Oscilloscope display characteristics Type 145 mm 5 7 in diagonal liquid crystal Resolution 320 x 240 vertical pixels Brightness Adjustable Contrast Adjustable temperature compen...

Страница 28: ...ibration Operating Nonoperating 0 31 gRMS from 5 Hz to 500 Hz 10 minutes on each axis 2 46 gRMS from 5 Hz to 500 Hz 10 minutes on each axis Mechanical Shock operating1 50 g 11 ms half sine 1 With one...

Страница 29: ...r Australia New Zealand Meets the intent of Australian EMC Framework as demonstrated to the following specification AS NZS 2064 1 2 1 Emissions that exceed the levels required by this standard may occ...

Страница 30: ...IP 302 The rating becomes IP 402 when the Compact Flash card and optional application key are installed Overvoltage Category Category Examples of Products in this Category CAT III Distribution level...

Страница 31: ...z and above For nonsinusoidal waveforms peak value must be less than 450 V Excursion above 300 V should be less than 100 ms duration RMS signal level including any DC component removed through AC coup...

Страница 32: ...installation CAT II CAT I Local level mains appliances portable equipment Si l l l i i l i f i l i CAT I Signal levels in special equipment or parts of equipment telecommunica tions electronics Pollu...

Страница 33: ...ures The next table and list describe the general features Table 2 1 Oscilloscope General features Model Channels Bandwidth Sample rate TPS2012 2 100 MHz 1 0 GS s TPS2014 4 100 MHz 1 0 GS s TPS2024 4...

Страница 34: ...le persistence display H RS 232 and Centronics ports H OpenChoice PC Communications software H User interface in ten user selectable languages Attach Reference Leads Correctly NOTE You must attach the...

Страница 35: ...P 2 Set the switch to 10X on the P2200 probe and connect the probe to channel 1 on the oscilloscope To do this align the slot in the probe connector with the key on the CH1 BNC push to connect and twi...

Страница 36: ...un the routine at any time but you should always run the routine if the ambient temperature changes by 5 _C or more To compensate the signal path disconnect any probes or cables from the channel input...

Страница 37: ...CH1 CH2 CH3 CH4 EXT Trig LCD Display J202 Front Panel J2100 J1 J302 Compact FLASH Card Application Key Probe Comp Output Compact Flash Board J1 J3 IO Board J650 Fan J600 LCD Backlight J640 ON OFF Swit...

Страница 38: ...ASICs are duplicated Most of the other aspects of the circuitry remain unchanged Signals from the CH 1 CH 2 and other input connectors pass through attenua tors and an AC coupling switch to the amplif...

Страница 39: ...ored 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 At the same time the wavefor...

Страница 40: ...he backlight RS 232 and Parallel port signals are passed from the Acquisition board through the IO board to their rear mounted connectors Display Module The Liquid Crystal Display pattern consists of...

Страница 41: ...e Autorange controls or the multipurpose knob are active In addition most buttons have a LED behind them for illumination in low light conditions Button illumination can be turned off in the Utility m...

Страница 42: ...Theory of Operation 3 6 TPS2000 Series Digital Storage Oscilloscopes Service Manual...

Страница 43: ...enerator 50 kHz and 200 MHz 3 amplitude accuracy Oscilloscope Calibration Module Option 250 Fluke 5500A Multi product C lib t ith O ill Time Mark Generator 10 ms period 10 ppm accuracy Calibrator with...

Страница 44: ...mV div 33 6 mV 36 4 mV curacy1 200 mV div 1 358 V 1 442 V 2 V div 13 58 V 14 42 V Channel 4 DC Gain Ac 1 5 mV div 33 6 mV 36 4 mV curacy1 200 mV div 1 358 V 1 442 V 2 V div 13 58 V 14 42 V Channel 1 B...

Страница 45: ...is automatically performed every time the oscilloscope is powered on No test equipment or hookups are required Verify that no error messages are displayed before continuing with this procedure The sel...

Страница 46: ...sitive voltage listed and then record the mean measurement as Vpos b Reverse the polarity of the DC voltage source and then record the mean measurement as Vneg c Calculate Vdiff Vpos Vneg and then com...

Страница 47: ...nel selected in the table to the leveled sine wave generator Digitizing oscilloscope Leveled sine wave generator 50 feedthrough terminator BNC cable Output 3 Set the oscilloscope VOLTS DIV to 500 mV d...

Страница 48: ...ly being tested Voltage Probe 1X 2 Connect the oscilloscope to the time mark generator as shown below Digitizing oscilloscope 50 feedthrough terminator BNC cable Time mark generator Output 3 Set the t...

Страница 49: ...channels 1 Set up the oscilloscope using the following steps Press menu button Select menu option Select setting DEFAULT SETUP CH 1 or whatever channel is currently being tested Voltage Probe 1X TRIG...

Страница 50: ...mately 750 mVp p so that the measured amplitude is approximately 750 mV The measured amplitude can fluctuate around 750 mV 11 Press SET LEVEL TO 50 Adjust TRIGGER LEVEL as necessary and then check tha...

Страница 51: ...nerator frequency to the following H 100 MHz if you are checking a TPS2012 2014 H 200 MHz if you are checking TPS2024 4 Set the oscilloscope VOLTS DIV to 500 mV div 5 Set the oscilloscope SEC DIV to 1...

Страница 52: ...ce Verification 4 10 TPS2000 Series Digital Storage Oscilloscopes Service Manual 9 Press SET LEVEL TO 50 Adjust TRIGGER LEVEL as necessary and then check that triggering is stable 10 Disconnect the te...

Страница 53: ...pment described in Table 5 1 or a suitable equivalent is required to complete the procedure Table 5 1 Required equipment Description Minimum requirements Examples DC Voltage Source 20 V to 20 V 0 1 ac...

Страница 54: ...dure keep in mind that some of the steps take a significant amount of time up to 5 minutes to complete The equipment setups shown in Figure 5 1 are required to complete the adjustment procedure Table...

Страница 55: ...DC voltage setup 2 DC voltage source Dual banana to BNC adapter BNC cable Sine wave generator setup Leveled sine wave generator Output 50 feedthrough terminator Table 5 2 and 5 3 list proper channel...

Страница 56: ...ith Table 5 2 for the remainder of the routine applying the proper signal for each step NOTE During some steps the oscilloscope may appear to be idle for several minutes while it is processing informa...

Страница 57: ...e 1 1 6 V 5 5 DC Voltage 1 1 2 V 6 6 DC Voltage 1 0 8 V 7 7 DC Voltage 1 0 4 V 8 8 DC Voltage 1 0 32 V 9 9 DC Voltage 1 0 2 V 10 10 DC Voltage 1 0 16 V 11 11 DC Voltage 1 0 08 V 12 12 DC Voltage 1 0 0...

Страница 58: ...41 Sine Wave Generator 50 Ohm 20 MHz 1 2 Vp p 42 42 Sine Wave Generator 50 Ohm BWL 30 mV 42 42 Sine Wave Generator 50 Ohm BWL 30 mVp p 43 43 Sine Wave Generator 50 Ohm BWL 60 mVp p 44 44 Sine Wave Gen...

Страница 59: ...V 61 61 Sine Wave Generator 50 Ohm BWL 30 mVp p 62 62 Sine Wave Generator 50 Ohm BWL 60 mVp p 63 63 Sine Wave Generator 50 Ohm BWL 120 mVp p 64 64 Sine Wave Generator 50 Ohm BWL 300 mVp p 65 65 Sine W...

Страница 60: ...Sine Wave Generator 50 Ohm BWL 60 mVp p 80 Sine Wave Generator 50 Ohm BWL 120 mVp p 81 Sine Wave Generator 50 Ohm BWL 300 mVp p 82 Sine Wave Generator 50 Ohm BWL 600 mVp p 83 Sine Wave Generator 50 O...

Страница 61: ...enerator 50 Ohm BWL 30 mVp p 98 Sine Wave Generator 50 Ohm BWL 60 mVp p 99 Sine Wave Generator 50 Ohm BWL 120 mVp p 100 Sine Wave Generator 50 Ohm BWL 300 mVp p 101 Sine Wave Generator 50 Ohm BWL 600...

Страница 62: ...Adjustment Procedures 5 10 TPS2000 Series Digital Storage Oscilloscopes Service Manual...

Страница 63: ...eshooting provides information for isolating failed modules H Repackaging Instructions provides packaging information for shipment or storage Preparation Only qualified personnel should perform servic...

Страница 64: ...Preventive maintenance consists of visually inspecting and cleaning the oscilloscope and using general care when operating it Perform preventive maintenance more often if you operate the oscilloscope...

Страница 65: ...oscilloscope or probes do not use any abrasive or chemical cleaning agents Inspection Interior Inspect and clean the interior if it appears that the oscillo scope may have been damaged or exposed to...

Страница 66: ...en the display shield and the display The polarizers integrated into the display degrade with long term exposure to water The display shield and display must be replaced as an assembly if significant...

Страница 67: ...mary found at the beginning of this manual Always disconnect the power cord before disassembling any portion of the oscilloscope To prevent damage to electrical components read Preventing ESD on page...

Страница 68: ...dures for module replacement by removing the front case Remove module See procedure on Front case Remove for following procedures Page 6 11 Acquisition board Page 6 14 Remove IO board first Front pane...

Страница 69: ...rear case 1 Place the oscilloscope face down on a soft surface 2 Ensure that all cables are routed within the internal chassis area 3 Place the rear case over the assembled oscilloscope and ensure tha...

Страница 70: ...Maintenance 6 8 TPS2000 Series Digital Storage Oscilloscopes Service Manual Rear case Rear case screws 5 Figure 6 1 Removing and installing the rear case...

Страница 71: ...he fan cable on the IO board 4 Install the rear case You will need the pliers for this procedure Removal To remove the backlight inverter board refer to Figure 6 2 on page 6 10 and follow these steps...

Страница 72: ...on board and lift up to remove the board Installation To install a new IO board refer to Figure 6 2 and follow these steps 1 Align the connector on the bottom of the IO board with the connector on the...

Страница 73: ...he front panel knobs Follow the procedure on page NO TAG 2 Place the oscilloscope with its rear case down on a soft surface such as an anti static mat 3 Remove the BNC cover by prying up on the expose...

Страница 74: ...wer switch BNC connectors and knob shafts so they feed through the front case 4 Lower the chassis onto the front case 5 Install the four screws on the inside of the chassis that attach the chassis to...

Страница 75: ...TPS2000 Series Digital Storage Oscilloscopes Service Manual 6 13 BNC cover 0 625 BNC nut Plastic BNC shell Front case Front case screws 4 Bush button Knobs Compact flash board Figure 6 4 Removing the...

Страница 76: ...th your fingers and pull up to remove the shell See figure 6 5 5 Remove the IO board Follow the procedure on page 6 10 6 Disconnect the display data cable at J201 7 Remove the six screws that secure t...

Страница 77: ...16 mm 5 8 inch deep socket and install the BNC nuts onto the BNC connectors Torque the nuts to 40 in lbs using the torque wrench 9 Install the BNC cover onto the front case 10 Install the rear case 1...

Страница 78: ...m the chassis This will unseat the feed through connection between the front panel board and the acquisi tion board on the opposite side Chassis Front panel circuit board Front panel circuit board scr...

Страница 79: ...rter board See Figure 6 2 on page 6 10 for the location of the board 4 Remove the four screws that attach the display module to the external chassis Support the display with your hand 5 Position the d...

Страница 80: ...ure 6 2 on page 6 10 for the IO board location 3 Remove the single screw below the display module that attaches the compact flash board to the external chassis 4 Remove the compact flash board Install...

Страница 81: ...Figure 6 8 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 CAUTION Keep the e...

Страница 82: ...e 6 1 If you replace the acquisition circuit board you must adjust the oscilloscope after repair Refer to the chapter Adjustment Procedures on page 5 1 You may need the the following tools and equipme...

Страница 83: ...lues Good voltages Replace Acquisition board Replace display or display cable Yes No Probe check ok Replace Acquisition board Connect external trigger to probe comp Set trigger source to EXT Press set...

Страница 84: ...ies OK No Yes Replace Acquisition board Verify power supply Voltages Disconnect IO board Yes No Able to run front panel tests Run front panel tests in service menu 5 key problem No Yes Yes Replace Fro...

Страница 85: ...cable attached Attach backlight cable No Using a high voltage 100X probe test voltages on backlight connectors Replace display 50 kHz 700 Vpk pk Yes No Detach display No Replace LCD Backlight board Y...

Страница 86: ...on with CF card Memory function OK Instrument no problem No Problem fixed No Yes From Figure 6 10 F Yes No Communication problem Replace Acquisition board Battery charging problem Exchange IO board Re...

Страница 87: ...the power supply Failures that occur during the power up diagnostics or normal oscilloscope operation place an entry in the error log Accessing the error log The error log list can be accessed anytime...

Страница 88: ...diagnostics failed Acquisition board or power supply failure 255 Software Software defect Contact Tektronix Clearing the Error Log To clear the error log after fixing a problem follow these steps 1 En...

Страница 89: ...hipped to a Tektronix Service Center enclose the following information H The owner address H Name and phone number of a contact person H Type and serial number of the oscilloscope H Reason for returni...

Страница 90: ...Maintenance 6 28 TPS2000 Series Digital Storage Oscilloscopes Service Manual...

Страница 91: ...Series Digital Storage Oscilloscopes Service Manual 7 1 Options There are no options available for the TPS2000 series oscilloscopes For a list of available accessories refer to chapter Mechanical Par...

Страница 92: ...Options 7 2 TPS2000 Series Digital Storage Oscilloscopes Service Manual...

Страница 93: ...s Digital Storage Oscilloscopes 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 TPS2000 series o...

Страница 94: ...Electrical Parts List 8 2 TPS2000 Series Digital Storage Oscilloscopes Service Manual...

Страница 95: ...DATA Isolator Isolated Plane Isolator FISO A2D Peak Detect Trigger ADG421 Preamp Attenuator ADG420 CH3 GND3 CLK SDATA Isolator Isolated Plane Isolator Preamp Attenuator ADG420 CH4 GND4 CLK SDATA Isola...

Страница 96: ...Diagrams 9 2 TPS2000 Series Digital Storage Oscilloscopes Service Manual...

Страница 97: ...strument type or model number H Instrument serial number H Instrument modification number if applicable If you order a part that has been replaced with a different or improved part your local Tektroni...

Страница 98: ...dering 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 w...

Страница 99: ...cross index shows codes names and addresses of manufacturers or vendors of components listed in the parts list Table 10 2 Manufacturers cross index Mfr code Manufacturer Address City state zip code 8...

Страница 100: ...ENE BLACK 80009 348 1704 00 13 200 4844 00 1 COVER BATTERY DOOR 80009 200 4844 00 14 348 1703 00 2 FOOT FRONT FLIPMPC ABS SILVER GRAY 80009 348 1703 00 15 146 0150 00 2 BATTERY LITHIUM ION RECHARGEABL...

Страница 101: ...BEZEL TPS2012 100MHZ 80009 335 1131 00 335 1132 00 1 BEZEL TPS2014 100MHZ 80009 335 1132 00 335 1133 00 1 BEZEL TPS2024 200MHZ 80009 335 1133 00 36 335 1108 00 1 LABEL 2 CH LANGUAGE FRENCH 80009 335...

Страница 102: ...Table 10 3 Replaceable parts list cont Fig index number Mfr part num ber Mfr code Name description Qty Serial no discont d Serial no effective Tektronix part number 335 1127 00 1 LABEL 4 CH LANGUAGE R...

Страница 103: ...s TPS2000 Series Digital Storage Oscilloscopes Service Manual 10 7 7 1 2 3 4 5 6 7 8 9 10 11 12 13 14 7 7 7 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 1 17 Figure 10 1 Explod...

Страница 104: ...Spanish Japanese Portuguese Simplified Chinese Traditional Chinese Korean Russian 071 1441 XX 071 1442 XX 071 1443 XX 071 1444 XX 071 1445 XX 071 1446 XX 071 1447 XX 071 1448 XX 071 1449 XX 071 1450 X...

Страница 105: ...e of the hard transit case always include the soft carrying case inside the hard transit case 016 1955 XX HCTEK321 Programmer manual 071 1075 XX Power Application user manuals English French Italian G...

Страница 106: ...Replaceable Parts 10 10 TPS2000 Series Digital Storage Oscilloscopes Service Manual...

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