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Equipment required...................................................................................................................................................... 19
Test points.....................................................................................................................................................................19
Troubleshooting flow chart............................................................................................................................................19
Instrument self tests......................................................................................................................................................21
Software updates..........................................................................................................................................................21
After power supply module replacement.......................................................................................................................22

Replaceable parts....................................................................................................................................................................... 23

Parts ordering information....................................................................................................................................................23
Module servicing.................................................................................................................................................................. 23
Abbreviations....................................................................................................................................................................... 23
Using the replaceable parts list............................................................................................................................................23
Rear case.............................................................................................................................................................................24
Rear chassis........................................................................................................................................................................ 26
Front chassis........................................................................................................................................................................28
Front panel and display........................................................................................................................................................30

Table of Contents

3 Series MDO Mixed Domain Oscilloscope Service Manual

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Содержание 3 Series

Страница 1: ...3 Series MDO Mixed Domain Oscilloscope Service Manual Register now Click the following link to protect your product www tek com register 077 1500 01 ...

Страница 2: ...sued and pending Information in this publication supersedes that in all previously published material Specifications and price change privileges reserved TEKTRONIX and TEK are registered trademarks of Tektronix Inc Contacting Tektronix Tektronix Inc 14150 SW Karl Braun Drive P O Box 500 Beaverton OR 97077 USA For product information sales service and technical support In North America call 1 800 8...

Страница 3: ...pair 4 Maintenance 5 Preventing ESD 5 Inspection and cleaning 5 Exterior cleaning other than display 5 Flat panel display cleaning 6 Interior cleaning 6 Lubrication 7 Returning the instrument for service 7 Remove and replace procedures 7 Required equipment 8 Remove feet 8 Remove handle 9 Remove rear grill and case 9 Remove handle hub assembly 10 Remove rear chassis assembly 11 Remove the main fan ...

Страница 4: ... After power supply module replacement 22 Replaceable parts 23 Parts ordering information 23 Module servicing 23 Abbreviations 23 Using the replaceable parts list 23 Rear case 24 Rear chassis 26 Front chassis 28 Front panel and display 30 Table of Contents 3 Series MDO Mixed Domain Oscilloscope Service Manual iv ...

Страница 5: ...ry troubleshooting tree 19 Figure 6 AC power supply troubleshooting procedure 20 Figure 7 Module isolation troubleshooting procedure 21 Figure 8 Rear case exploded view 24 Figure 9 Rear chassis exploded view 26 Figure 10 Front chassis exploded rear view 28 Figure 11 Front panel and display exploded view 30 List of Figures 3 Series MDO Mixed Domain Oscilloscope Service Manual v ...

Страница 6: ...red equipment for removal and replacement 8 Table 4 Failure symptoms and possible causes 18 Table 5 Parts list column descriptions 23 Table 6 Rear case 25 Table 7 Rear chassis 26 Table 8 Front chassis 28 Table 9 Front panel and display 30 List of Tables 3 Series MDO Mixed Domain Oscilloscope Service Manual vi ...

Страница 7: ...rd specified for this product and certified for the country of use Do not use the provided power cord for other products Ground the product This product is grounded through the grounding conductor of the power cord To avoid electric shock the grounding conductor must be connected to earth ground Before making connections to the input or output terminals of the product ensure that the product is pr...

Страница 8: ...prolonged use of keyboards pointers and button pads Improper or prolonged keyboard or pointer use may result in serious injury Be sure your work area meets applicable ergonomic standards Consult with an ergonomics professional to avoid stress injuries Use care when lifting and carrying the product This product is provided with a handle or handles for lifting and carrying Use only the Tektronix rac...

Страница 9: ... summary and the General safety summary before performing any service procedures To avoid electric shock Do not touch exposed connections 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 Disconnect power To avoid electric shock switch off the product power and disconnect the power c...

Страница 10: ...ind out the nature of the potential hazards and any actions which have to be taken to avoid them This symbol may also be used to refer the user to ratings in the manual The following symbols may appear on the product Important safety information 3 Series MDO Mixed Domain Oscilloscope Service Manual x ...

Страница 11: ...t does not have any specific product designation applies to all products in the manual Replaceable parts This manual refers to any field replaceable assembly or mechanical part specifically by its name or generically as a replaceable part In general a replaceable part is any circuit board or assembly or a mechanical part that is listed in the replaceable parts list that can be replaced in the fiel...

Страница 12: ...ibes the electrical operation of the oscilloscope to the module level The block diagram shows the oscilloscope module interconnections Figure 1 MDO34 block diagram Theory of operation 3 Series MDO Mixed Domain Oscilloscope Service Manual 2 ...

Страница 13: ...buted to a trigger circuit The digital channels pass through the front of the instrument to the Main board Front end All of the analog inputs are routed to the Front end board The analog channels are amplified and attenuated through the front end circuitry and are output to the Main board The front end board has a controller that is used as an I O controller for the front end board Mezzanine The M...

Страница 14: ...to http www tek com product support enter the model number click GO and then select the Specification and Performance Verification document to download If your organization requires periodic calibration a general rule is to verify performance and make adjustments only if needed every 2000 hours of operation or once a year if the instrument is used infrequently Adjustment after repair After removal...

Страница 15: ...also describes how to clean the exterior and interior of the instrument Inspection and cleaning are done as preventive maintenance Preventive maintenance when done regularly may prevent instrument malfunction and enhance its reliability Preventive maintenance consists of visually inspecting and cleaning the instrument and using general care when operating it How often to perform maintenance depend...

Страница 16: ...urface Do not scrub the display with excessive force CAUTION To prevent getting moisture inside the instrument during external cleaning do not spray any cleaning solutions directly onto the screen or instrument Interior cleaning You can only clean the interior of the rear chassis assembly To access the rear chassis assembly see the Removal and Installation Procedures topics Do not disassemble or c...

Страница 17: ...ardware Straighten repair or replace defective hardware Lubrication There is no periodic lubrication required for this instrument Returning the instrument for service When repacking the instrument for shipment use the original packaging If the packaging is unavailable or unfit for use contact your local Tektronix representative to obtain new packaging Seal the shipping carton with an industrial st...

Страница 18: ...amage to components whenever you work on the instrument wear properly grounded electrostatic prevention wrist and foot straps and work in a tested antistatic environment on an antistatic mat Remove feet Use this procedure to remove and replace bottom feet assemblies or gain access to the rear chassis assembly Prerequisite To prevent electrostatic damage to components whenever you work on the instr...

Страница 19: ...plers 4 To reinstall reverse the steps Use a screwdriver with T 10 Torx tip to secure the screws Tighten to 0 65 N m Remove rear grill and case Use this procedure to remove and replace the rear grill and rear case Prerequisites To prevent electrostatic damage to components whenever you work on the instrument wear properly grounded electrostatic prevention wrist and foot straps and work in a tested...

Страница 20: ...ear chassis 7 To reinstall reverse the steps Tighten the six T 10 Torx rear case screws to 0 65 N m Tighten the ten T 10 Torx rear grill screws to 0 65 N m Remove handle hub assembly Use this procedure to remove and replace the handle hubs from the rear chassis Prerequisites To prevent electrostatic damage to components whenever you work on the instrument wear properly grounded electrostatic preve...

Страница 21: ...ic damage to components whenever you work on the instrument wear properly grounded electrostatic prevention wrist and foot straps and work in a tested antistatic environment on an antistatic mat Remove rear grill and case Steps Remove the rear chassis assembly from the front chassis assembly using the following steps 1 Use a screwdriver with a with T 10 Torx tip to remove the 16 screws securing th...

Страница 22: ...to install the 16 screws securing the rear chassis to the front chassis Tighten to 0 65 N m Remove the main fan assembly Use this procedure to remove and replace the main fan from the rear chassis Prerequisites To prevent electrostatic damage to components whenever you work on the instrument wear properly grounded electrostatic prevention wrist and foot straps and work in a tested antistatic envir...

Страница 23: ...he T 10 Torx screws to 0 65 N m when reinstalling Remove the AC line filter Use this procedure to remove and replace the AC line filter from the rear chassis Prerequisites To prevent electrostatic damage to components whenever you work on the instrument wear properly grounded electrostatic prevention wrist and foot straps and work in a tested antistatic environment on an antistatic mat Remove rear...

Страница 24: ... the line input cable from the power supply Figure 3 AC line filter cable connections 4 Use a T 10 Torx screwdriver to remove the two screws securing the line filter to the outside of the rear chassis Maintenance 3 Series MDO Mixed Domain Oscilloscope Service Manual 14 ...

Страница 25: ...er the corner of the fan f Fold the conductive tape over the top of the AC line filter Remove the power supply assembly Use this procedure to remove and replace the power supply assembly Prerequisites To prevent electrostatic damage to components whenever you work on the instrument wear properly grounded electrostatic prevention wrist and foot straps and work in a tested antistatic environment on ...

Страница 26: ...sembly from the rear chassis 4 Disconnect the three power supply cables from the power supply board 5 To reinstall reverse the steps Tighten all T 10 Torx screws to 0 65 N m when reinstalling Install new tie down straps zip ties if you removed them during disassembly Remove the I O board Use this procedure to remove and replace the I O board Prerequisites Maintenance 3 Series MDO Mixed Domain Osci...

Страница 27: ...he HDMI connector on the rear panel 2 Disconnect the line trigger and fan cable from the I O board 3 Use a T 10 Torx screwdriver to remove the two screws above the AFG Out and AUX Out connections 4 Use a T 10 Torx screwdriver to remove the two screws securing the I O board to the bottom of the rear chassis 5 Slide the I O board out from the rear chasis 6 To reinstall reverse the steps Tighten the ...

Страница 28: ... module This section requires that service personnel have the appropriate skills to work on this instrument For assistance contact your local Tektronix Service Center Level of service This subsection contains information and procedures to help you determine if a faulty power supply is the problem with your instrument If replacing the power supply does not fix the fault you will need to return the ...

Страница 29: ...atic prevention wrist and foot straps and work in a tested antistatic environment on an antistatic mat Test points Test points on the Main board are shown in the troubleshooting flow chart The test point voltages are printed on the Main board The 12 V test point is on the upper right hand corner of the board Troubleshooting flow chart Follow the troubleshooting flow chart to determine the action f...

Страница 30: ...Figure 6 AC power supply troubleshooting procedure Maintenance 3 Series MDO Mixed Domain Oscilloscope Service Manual 20 ...

Страница 31: ...nix Service Center for repair Software updates To update the application software 1 Go to www tek com product support 2 Enter a model number in the Enter Product or Product Series Name field and click Go 3 Click the Software tab 4 On the oscilloscope tap Help About 5 Compare the version number of the installed software to the version on the web a If the version number on the oscilloscope is the sa...

Страница 32: ...ou must perform the Performance Verification procedures found in the Specifications and Performance Verification manual Tektronix part number 077 1499 XX Download this manual from the Tektronix Web site www tek com manuals If the instrument fails the Performance Verification tests it must be returned to a Tektronix Service Center for adjustment Maintenance 3 Series MDO Mixed Domain Oscilloscope Se...

Страница 33: ... Center or representative for repair assistance Module exchange In some cases you may exchange your module for a remanufactured module These modules cost significantly less than new modules and meet the same factory specifications For more information about the module exchange program call 1 800 833 9200 Outside North America contact a Tektronix sales office or distributor see the Tektronix Web si...

Страница 34: ...art is good for all serial numbers 5 Qty This indicates the quantity of parts used 6 Name description An item name is separated from the description by a colon Because of space limitations an item name may sometimes appear as incomplete Use the U S Federal Catalog handbook H6 1 for further item name identification Rear case Figure 8 Rear case exploded view Replaceable parts 3 Series MDO Mixed Doma...

Страница 35: ... REPLACEMENT KIT HANDLE ASSEMBLY 3 065 1059 XX 1 MODULE ASSY SERVICE REPLACEMENT KIT HANDLE HUB ASSEMBLY RIGHT AND LEFT 4 378 0963 XX 1 GRILLE COSMETIC REAR 5 211 1686 XX 10 SCREW MACHINE M3X0 5X10 FLAT HEAD STL TORX 10 6 065 1047 XX 1 MODULE ASSY SERVICE REPLACEMENT KIT REAR FLIP FEET 3 4 SERIES QTY 2 IDENTICAL 7 202 0579 XX 1 CASE REAR ASSEMBLY INCLUDES PLASTIC CASE PLASTIC TRIM and WRAP LABELS ...

Страница 36: ...ge 26 1 119 8177 XX 1 FAN TUBEAXIAL 12 VDC 0 21 A 2 52 W 1 45 M 3 MIN 3150 RPM 33 DBA 92 MM X 92 MM X 25 MM SAFETY CONTROLLED 2 348 2082 XX 4 GROMMET FAN MOUNT NOISE DAMPING 3 407 6149 XX 1 BRACKET FAN 4 441 2911 XX 1 CHASSIS REAR a new Rear I O Label needs to be installed when replacing the rear chassis order separately Table continued Replaceable parts 3 Series MDO Mixed Domain Oscilloscope Serv...

Страница 37: ... FILTER EMI AC LINE CONNECTOR INPUT FILTER 6 0 A 120 250 VAC DC 400 HZ 2 2 NF CY 100 NF CX IEC INPUT FAST ON SOLDER LUG OUTPUT CHASSIS MOUNT SAFETY CONTROLLED 9 174 6286 XX 1 CABLE ASSEMBLY LINE INPUT SAFETY CONTROLLED 10 174 6284 XX 1 CABLE POWER SUPPLY OUTPUT 11 119 8042 XX 1 POWER SUPPLY AC DC 90 264 VAC 45 66 HZ 100 132 VAC 360 440 HZ IN 12 V 12 A5 5 V 1 A 150 W OUT PS_ON PWR_GOOD SIGNALS SAFE...

Страница 38: ...11 1585 XX 15 SCREW DELTA PT 3MM X 8MM T10 2 211 1584 XX 8 SCREW MACHINE M3 X 6 3 441 2910 XX 1 CHASSIS FRONT ASSEMBLY Return the instrument to Tektronix for service 4 351 1159 XX 1 GUIDE MSO PROBE BLACK Return the instrument to Tektronix for service 5 878 1623 XX 1 ASSEMBLY CIRCUIT BOARD MEZZANINE Return the instrument to Tektronix for service Table continued Replaceable parts 3 Series MDO Mixed ...

Страница 39: ...rn the instrument to Tektronix for service 870 1647 XX 1 CIRCUIT BOARD ASSY AFE BOARD 500MHZ 2 CH MODEL WITH SHIELD 337 4590 XX Return the instrument to Tektronix for service 870 1648 XX 1 CIRCUIT BOARD ASSY AFE BOARD 500MHZ 4 CH MODEL WITH SHIELD 337 4590 XX Return the instrument to Tektronix for service 7 878 1625 XX 1 ASSEMBLY CIRCUIT BOARD MAIN BOARD Return the instrument to Tektronix for serv...

Страница 40: ...ig index number Tektronix part number Serial no effective Serial no discont d Qty Name description Figure 11 Front panel and display exploded view on page 30 1 850 0404 XX 1 ASSEMBLY DISPLAY TOUCHSCREEN INCLUDES DISPLAY TOUCHSCREEN BRACKET SAFETY CONTROLLED Return the instrument to Tektronix for service 2 211 1584 XX 5 SCREW MACHINE M3X0 5X6MM PAN HEAD TORX T10 3 366 0920 XX 1 BUTTON POWER SWITCH ...

Страница 41: ...eturn the instrument to Tektronix for service 12 065 1038 XX 1 MODULE ASSY SERVICE REPLACEMENT KIT FRONT PANEL DOME SWITCH ARRAY AND PCBA FRONT PANEL SWITCH LED MDO32 AND MDO34 Return the instrument to Tektronix for service 13 260 3116 XX 1 EMAT FRONT PANEL Return the instrument to Tektronix for service 14 335 4091 XX 1 LABEL BLACKOUT EMAT OVERLAY Return the instrument to Tektronix for service 15 ...

Страница 42: ...EL 350 MHZ 335 4200 XX 1 MARKER IDENTIFICATION LABEL MDO 4 CHANNEL 500 MHZ 335 4201 XX 1 MARKER IDENTIFICATION LABEL MDO 4 CHANNEL 1GHZ 335 4192 XX 1 MARKER IDENTIFICATION LABEL MDO 2 CHANNEL 100 MHZ 335 4193 XX 1 MARKER IDENTIFICATION LABEL MDO 2 CHANNEL 200 MHZ 335 4194 XX 1 MARKER IDENTIFICATION LABEL MDO 2 CHANNEL 350 MHZ 335 4195 XX 1 MARKER IDENTIFICATION LABEL MDO 2 CHANNEL 500 MHZ 335 4196...

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