In This Service Guide This book provides the service information for the Agilent 2000/3000 X- Series oscilloscopes. This manual is divided into these chapters: Characteristics and Specifications This chapter contains a partial list of characteristics and specifications for the Agilent InfiniiVision 2000/3000 X- Series oscilloscopes.
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Safety Notices At the front of the book you will find safety notice descriptions and document warranties. Digital Channels Because all of the oscilloscopes in the Agilent 2000/3000 X-Series have analog channels, the analog channel topics in this book apply to all instruments. Whenever a topic discusses the digital channels, that information applies only to Mixed-Signal Oscilloscope (MSO) models or DSO models that have been upgraded to an MSO.
Contents In This Service Guide Figures Tables Characteristics and Specifications Power Requirements Measurement Category Measurement Category Measurement Category Definitions Transient Withstand Capability Environmental Conditions Specifications Contact us Testing Performance Overview List of Test Equipment Conventions To construct the test connector (for use with MSO models only) To test digital channels (MSO models only) To verify digital channel threshold accuracy (MSO models...
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To verify time base accuracy To verify trigger sensitivity Test Internal Trigger Sensitivity (all models) Test External Trigger Sensitivity Agilent 2000 X-Series Oscilloscopes Performance Test Record Agilent 3000 X-Series Oscilloscopes Performance Test Record Calibrating and Adjusting User Calibration To perform User Cal...
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Contents Troubleshooting Internal Assemblies Equipment Required for Troubleshooting Internal Assemblies To prepare for internal assembly troubleshooting Flowchart for Troubleshooting Internal Assemblies System Board Drawings To check the system board power supply test points To check the interboard supply connector voltages To check the line filter board AC output To check the power switch To check the power supply DC output...
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Contents Listed Parts Unlisted Parts Direct Mail Order System Exchange Assemblies Exploded Views Replaceable Parts List Safety Notices Warnings To clean the instrument Safety Symbols Index 2000/3000 X-Series Oscilloscopes Service Guide...
Figures Figure 1. Constructing the 8-by-2 Connector Figure 2. Setting Up Equipment for Digital Channel Threshold Accuracy Test Figure 3. Setting up Equipment for DC Vertical Gain Accuracy Test Figure 4. Using a Blocking Capacitor to Reduce Noise Figure 5. Setting up Equipment for Dual Cursor Accuracy Test Figure 6.
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Figures Figure 24. Removing the power supply shield screw Figure 25. Unclipping the power supply shield right side Figure 26. Removing the power supply shield - lift and pull Figure 27. Removing the BNC nuts and washers Figure 28. Removing the top rear deck screws Figure 29.
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Figures Figure 52. Removing the display assembly Figure 53. Display assembly removed Figure 54. The 75019-68712 display assembly has a bracket under two of the retaining screws Figure 55. Disassembling the 75019-68712 display assembly Figure 56. Separating the 75019-68712 display mounting bracket Figure 57.
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Figures 2000/3000 X-Series Oscilloscopes Service Guide...
Table 7. Equipment Required to Verify DC Vertical Gain Accuracy Table 8. Settings Used to Verify DC Vertical Gain Accuracy, 2000 X-Series Models Table 9. Settings Used to Verify DC Vertical Gain Accuracy, 3000 X-Series Models Table 10. Equipment Required to Verify Dual Cursor Accuracy Table 11.
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Tables 2000/3000 X-Series Oscilloscopes Service Guide...
Agilent InfiniiVision 2000/3000 X-Series Oscilloscope Service Guide Characteristics and Specifications Power Requirements Measurement Category Environmental Conditions Specifications Contact us This chapter contains a partial list of characteristics and specifications for the Agilent InfiniiVision 2000/3000 X- Series oscilloscopes. For a full list of Agilent InfiniiVision 2000/3000 X- Series oscilloscopes characteristics and specifications see the data sheets.
Characteristics and Specifications Power Requirements Line voltage, frequency, and power: • ~Line 100- 120 Vac, 50/60/400 Hz • 100- 240 Vac, 50/60 Hz • 100 W max 2000/3000 X-Series Oscilloscopes Service Guide...
Characteristics and Specifications Measurement Category Measurement Category The InfiniiVision 2000/3000 X- Series oscilloscope is intended to be used for measurements in Measurement Category I. Use this instrument only for measurements within its specified WA R N I N G measurement category. Measurement Category Definitions Measurement category I is for measurements performed on circuits not directly connected to MAINS.
Characteristics and Specifications Transient Withstand Capability Maximum input voltage for analog inputs C A U T I O N CAT I 300 Vrms, 400 Vpk; transient overvoltage 1.6 kVpk with 10073C 10:1 probe: CAT I 500 Vpk, CAT II 400 Vpk with N2862A/B or N2863A/B 10:1 probe: 300 Vrms Do not exceed 5 Vrms in 50 mode (3000 X-Series oscilloscopes only).
Characteristics and Specifications Environmental Conditions Environment Indoor use only. Ambient Operating 0 C to +55 C; non-operating –40 C to +71 C temperature Humidity Operating: Up to 80% RH at or below +40 C. Up to 45% RH up to +50 C. Non-operating: Up to 95% RH up to +40 C.
Characteristics and Specifications Specifications Please see the InfiniiVision 2000/3000 X- Series Oscilloscopes Data Sheet for complete, up- to- date specifications and characteristics. To download a copy of the data sheet please visit: www.agilent.com/find/2000X- Series www.agilent.com/find/3000X- Series. Or go to the Agilent home page at www.agilent.com search for 2000/3000 X-Series oscilloscopes data sheet.
Characteristics and Specifications Contact us Americas Canada (877) 894-4414 Latin America 305 269 7500 United States (800) 829-4444 Asia Pacific Australia 1 800 629 485 China 800 810 0189 Hong Kong 800 938 693 India 1 800 112 929 Japan 81 426 56 7832 Korea 080 769 0800 Malaysia 1 800 888 848 Singapore 1 800 375 8100...
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Characteristics and Specifications 2000/3000 X-Series Oscilloscopes Service Guide...
To verify bandwidth (-3 dB) To verify time base accuracy To verify trigger sensitivity Agilent 2000 X-Series Oscilloscopes Performance Test Record Agilent 3000 X-Series Oscilloscopes Performance Test Record This chapter explains how to verify correct oscilloscope operation and perform tests to ensure that the oscilloscope...
Testing Performance Overview To completely test and troubleshoot MSO models, create and use the test connector accessory as described in this chapter. • The test connector is only required for oscilloscopes that have the MSO option licensed (enabled). • The connector is used in the digital channel threshold accuracy test.
Testing Performance List of Test Equipment Below is a list of test equipment and accessories required to perform the performance test verification procedures. Table 1 List of test equipment Recommended Model/ Equipment Critical Specifications Part Number Test connector, 8-by-2* page 27 for instructions on building test connector.
Testing Performance Table 1 List of test equipment (continued) Recommended Model/ Equipment Critical Specifications Part Number Adapter Type N (m) to BNC (m) Agilent 1250-0082 or Pomona 3288 with Pomona 3533 Blocking capacitor and shorting cap Note: if a BNC blocking capacitor is not available use an Agilent 11742A + SMA blocking capacitor.
Testing Performance To construct the test connector (for use with MSO models only) Agilent 2000/3000 X- Series oscilloscopes that have digital channels enabled require the test connector described below. Follow the steps to build the test connector. Table 3 Materials required to construct the test connectors Description Recommended Part BNC (f) Connector...
Testing Performance To test digital channels (MSO models only) The acquisition system testing provides confidence that the acquisition system is functioning correctly. It does not, however, check a particular specification. 1 Disconnect all probes from the circuit under test and from any other input source.
Testing Performance To verify digital channel threshold accuracy (MSO models only) This test verifies the digital channel threshold accuracy specification of the Agilent 2000/3000 X- Series oscilloscopes. Threshold accuracy test limits: ±(100 mV + 3% of threshold setting) When to Test You should perform this test every 12 months or after 2000 hours of operation, whichever comes first.
Testing Performance Table 4 Equipment Required to Test Digital Channel Threshold Accuracy Critical Equipment Specifications Recommended Model/Part Digital Multimeter 0.1 mV resolution, Agilent 34401A 0.005% accuracy Oscilloscope Calibrator DC offset voltage Fluke 5820A 6.3 V BNC-Banana Cable Agilent 11001-66001 or Pomona 2BC-BNC-36 BNC Tee Agilent 1250-0781 or...
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Testing Performance Oscilloscope 2000/3000 X-Series Oscilloscope Calibrator Digital Multimeter Probe BNC Tee Cables Channels BNC-Bananna Test 8 - 15 Channels Cable Connector 0 - 7 Figure 2 Setting Up Equipment for Digital Channel Threshold Accuracy Test 4 Use a BNC- banana cable to connect the multimeter to the other side of the BNC Tee.
Testing Performance oscilloscope to set the threshold test settings as shown in Table Table 5 Threshold Accuracy Voltage Test Settings Threshold voltage DC offset voltage setting setting (in oscilloscope (on oscilloscope User softkey) calibrator) Limits +5.00 V +5.250 V ±1 mV dc Lower limit = +4.750 V Upper limit = +5.250 V –5.00 V...
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Testing Performance Before proceeding to the next step, make sure that you have recorded the oscilloscope calibrator voltage levels for each of the threshold settings shown in Table 9 When testing 3000 X- Series MSOs, use the 8- by- 2 test connector to connect digital channels D15- D8 to the output of the oscilloscope calibrator.
DC Vertical Gain Accuracy Test Limits Models Test Limits Notes 2000 X-Series ±3% of full scale (>= 10 mV/div); • Full scale is defined as 32 mV on the 2 mV/div range ±4% of full scale (< 10 mV/div) and the 1 mV/div range.
Testing Performance Table 8 Settings Used to Verify DC Vertical Gain Accuracy, 2000 X-Series Models Volts/Div Oscilloscope Test Limits Setting Calibrator Setting 5 V/Div 35 V 33.8 V 36.2 V 2 V/Div 14 V 13.52 V 14.48 V 1 V/Div 6.76 V...
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Testing Performance Table 9 Settings Used to Verify DC Vertical Gain Accuracy, 3000 X-Series Models Volts/Div Oscilloscope Test Limits Setting Calibrator Setting 5 V/Div 35 V 34.2 V 35.8 V 2 V/Div 14 V 13.68 V 14.32 V 1 V/Div 6.84 V 7.16 V 500 mV/Div...
Testing Performance c Press Type:; then, turn the Entry knob to select Average - Full Screen, and press Add Measurement. 5 Read the “current” average voltage value as V1. 6 Use the BNC tee and cables to connect the oscilloscope calibrator /power supply to both the oscilloscope and the multimeter (see Figure...
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Testing Performance 7 Adjust the output so that the multimeter reading displays the first Volts/div calibrator setting value in Table 8 Table 9 (depending on the oscilloscope model). 8 Disconnect the multimeter. 9 Wait until the measurement settles. 10 Read the “current” average voltage value again as V2. 11 Calculate the difference V2 - V1.
Testing Performance Use a Blocking Capacitor to Reduce Noise On the more sensitive ranges, such as 1 mV/div, 2 mV/div, and 5 mV/div, noise may be a factor. To eliminate the noise, add a BNC Tee, blocking capacitor, and shorting cap at the oscilloscope channel input to shunt the noise to ground.
Testing Performance To verify dual cursor accuracy This test verifies the dual cursor accuracy for each analog channel. This test is similar to the test for verifying the DC vertical gain, except you will measure the dc voltage output of an oscilloscope calibrator using dual cursors on the oscilloscope and compare the results with the multimeter reading.
Testing Performance Table 10 Equipment Required to Verify Dual Cursor Accuracy Recommended Equipment Critical Specifications Model/Part Oscilloscope 14 mV to 35 Vdc, Fluke 5820A Calibrator 0.1 V resolution Digital multimeter Better than 0.01% accuracy Agilent 34401A Cable BNC, Qty 2 Agilent 10503A Shorting cap Agilent 1250-0774...
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Testing Performance Table 11 Settings Used to Verify Dual Cursor Accuracy, 2000 X-Series Models Volts/Div Oscilloscope Test Limits Setting Calibrator Setting 5 V/Div 35 V 33.6 V 36.4 V 2 V/Div 14 V 13.44 V 14.56 V 1 V/Div 6.72 V 7.28 V...
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Testing Performance Table 12 Settings Used to Verify Dual Cursor Accuracy, 3000 X-Series Models Volts/Div Oscilloscope Test Limits Setting Calibrator Setting 5 V/Div 35 V 34.0 V 36.0 V 2 V/Div 14 V 13.6 V 14.4 V 1 V/Div 6.8 V 7.2 V 500 mV/Div 3.5 V...
Testing Performance 5 Use the BNC tee and cables to connect the oscilloscope calibrator /power supply to both the oscilloscope and the multimeter (see Figure Oscilloscope Oscilloscope Calibrator BNC Tee Digital Multimeter BNC (f) to dual bananna adapter Figure 5 Setting up Equipment for Dual Cursor Accuracy Test 6 Adjust the output so that the multimeter reading displays the first Volts/div calibrator setting value in...
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Testing Performance 9 Press the Y2 softkey, then position the Y2 cursor to the center of the voltage trace using the Entry knob. The Y value on the lower line of the display should be within the test limits of Table 11 Table 12 (depending...
Testing Performance Use a Blocking Capacitor to Reduce Noise On the more sensitive ranges, such as 1 mV/div, 2 mV/div, and 5 mV/div, noise may be a factor. To eliminate the noise, add a BNC Tee, blocking capacitor, and shorting cap at the oscilloscope channel input to shunt the noise to ground.
Testing Performance To verify bandwidth (-3 dB) This test checks the bandwidth (- 3 dB) of the oscilloscope. In this test you will use a signal generator and a power meter. Table 13 Bandwidth (-3 dB) Test Limits Models Test Limits 1 GHz Models All channels (-3 dB), dc to 1 GHz 500 MHz Models...
BNC (f) to BNC (m), 50 Ohm Feedthrough Agilent 0960-0301 when testing Termination 2000 X-Series oscilloscopes 1 Connect the equipment (see Figure a Use the N cable to connect the signal generator to the input of the power splitter input.
Testing Performance Oscilloscope Signal Generator N to BNC Adapter Power Splitter Power Sensor N Cable Power Meter Figure 7 Setting Up Equipment for Bandwidth (-3 dB) Verification Test 2 Set up the power meter. Set the power meter to display measurements in units of watts.
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Testing Performance c With 2000 X- Series oscilloscopes, connect a 50 ohm feedthrough termination. With 3000 X- Series oscilloscopes, set channel 1 Imped to 50 Ohm. d Set the time base to 500 ns/div. e Set the Volts/Div for channel 1 to 200 mV/div. f Press the [Acquire] key, then press the Averaging softkey.
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Testing Performance 9 Change the signal generator output frequency according to the maximum frequency for the oscilloscope using the following: • 1 GHz Models: 1 GHz • 500 MHz Models: 500 MHz • 350 MHz Models: 350 MHz • 200 MHz Models: 200 MHz •...
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Testing Performance Pmeas = 687 uW max_freq Std Dev(n) = 161.6 mV max freq Then after converting the values from the power meter to Vrms: 161.6 185.3 response(dB) = 20 log = -1.16 dB 210.4 211.2 15 The result from step 14 should be between +3.0 dB and...
Agilent 10503A BNC (f) to BNC (m), 50 Ohm Feedthrough Agilent 0960-0301 when testing Termination 2000 X-Series oscilloscopes 1 Set up the signal generator. a Set the output to 10 MHz, approximately 1 V sine wave. 2 Connect the output of the signal generator to oscilloscope channel 1 using the BNC cable.
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Testing Performance e Adjust the oscilloscope’s trigger level so that the rising edge of the waveform at the center of the screen is located where the center horizontal and vertical grid lines cross (center screen). f Ensure the horizontal position control is set to 0.0 seconds.
Testing Performance To verify trigger sensitivity This test verifies the trigger sensitivity. In this test, you will apply a sine wave to the oscilloscope at the upper bandwidth limit. You will then decrease the amplitude of the signal to the specified levels, and check to see if the oscilloscope is still triggered.
Testing Performance Test Internal Trigger Sensitivity (all models) 1 On the oscilloscope, press the [Default Setup] key. 2 Press the [Mode/Coupling] key; then, press the Mode softkey to select Normal. 3 Connect the equipment (see Figure a Connect the signal generator output to the oscilloscope channel 1 input.
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Testing Performance signal generator to the maximum bandwidth of the oscilloscope: • 1 GHz models: 1 GHz. • 500 MHz models: 500 MHz. • 350 MHz models: 350 MHz. • 200 MHz models: 200 MHz. • 100 MHz models: 100 MHz. •...
Testing Performance The trigger is stable when the displayed waveform is stable. If the trigger is not stable, try adjusting the trigger level. If adjusting the trigger level makes the trigger stable, the test still passes. If adjusting the trigger does not help, see the “Troubleshooting” chapter. Then return here.
Testing Performance Oscilloscope Signal Generator 50 Ohm Feedthrough N to BNC Adapter Power Splitter Power Sensor N Cable Power Meter Figure 9 Setting Up Equipment for 4-Channel External Trigger Sensitiv- ity Test 2000/3000 X-Series Oscilloscopes Service Guide...
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Testing Performance 2 Set up the oscilloscope. a Press the [Default Setup] key. b Press the [Mode/Coupling] key; then, press the Mode softkey to select Normal. 3 Change the signal generator output frequency to 100 MHz or 200 MHz. 4 Set the power meter Cal Factor % to the appropriate value (100 MHz or 200 MHz) on the calibration chart on the power sensor.
Testing Performance Agilent 2000 X-Series Oscilloscopes Performance Test Record Serial No. ______________________________________ Test by _____________________________ Test Interval ____________________________________ Work Order No. ______________________ Recommended Next Testing ________________________ Temperature ____________ Threshold Specification Limits Ch D7-D0 Accuracy Test 5 V - 250 mV 4.750 V...
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Testing Performance Dual Cursor Accuracy Range Power Supply Setting Test Limits Channel 1 Channel 2 Channel 3* Channel 4* 5 V/Div 35 V 33.6 V to 36.4 V ________ ________ ________ ________ 2 V/Div 14 V 13.44 V to 14.56 V ________ ________ ________ ________ 1 V/Div 6.72 V to 7.28 V...
Testing Performance Agilent 3000 X-Series Oscilloscopes Performance Test Record Serial No. ______________________________________ Test by _____________________________ Test Interval ____________________________________ Work Order No. ______________________ Recommended Next Testing ________________________ Temperature ____________ Threshold Specification Limits Ch D7-D0 Ch D15-D8 Accuracy Test 5 V - 250 mV 4.750 V ________ ________ 5 V + 250 mV...
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Testing Performance Dual Cursor Accuracy Range Power Supply Setting Test Limits Channel 1 Channel 2 Channel 3* Channel 4* 5 V/Div 35 V 34.0 V to 36.0 V ________ ________ ________ ________ 2 V/Div 14 V 13.6 V to 14.4 V ________ ________ ________ ________ 1 V/Div 6.8 V to 7.2 V...
Agilent InfiniiVision 2000/3000 X-Series Oscilloscope Service Guide Calibrating and Adjusting This chapter explains how to adjust the oscilloscope for optimum operating performance. You should perform self- calibration according to the following recommendations: • Every two years or after 4000 hours of operation •...
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Calibrating and Adjusting REMOVE POWER TO AVOID DAMAGE! C A U T I O N Do not disconnect any cables or remove any assemblies with power applied to the oscilloscope. Otherwise, damage to the oscilloscope can occur. USE EXTERNAL FAN TO REDUCE TEMPERATURE! C A U T I O N When you must operate the oscilloscope with its cover and main shield removed, use an external fan to provide continuous air flow over the samplers (the ICs with...
Calibrating and Adjusting User Calibration Perform user- calibration: • Every two years or after 4000 hours of operation. • If the ambient temperature is >10° C from the calibration temperature. • If you want to maximize the measurement accuracy. The amount of use, environmental conditions, and experience with other instruments help determine if you need shorter User Cal intervals.
Calibrating and Adjusting 2- channel oscilloscope or four equal- length cables for a 4- channel oscilloscope. Use 50 RG58AU or equivalent BNC cables when performing User Cal. a For a 2- channel oscilloscope, connect a BNC tee to the equal length cables. Then connect a BNC(f)- to- BNC(f) (also called a barrel connector) to the tee as shown below.
Calibrating and Adjusting BNC(f)- to- BNC(f) (barrel connector) to the tee as shown below. To Channel 1 To Channel 2 To Channel 3 Longer cable to TRIG OUT To Channel 4 Figure 11 User Calibration cable for 4-channel oscilloscope 4 Connect a BNC cable (40 inches maximum) from the TRIG OUT connector on the rear panel to the BNC barrel connector.
Calibrating and Adjusting User Cal Status Pressing the User Cal Status softkey displays the following summary results of the previous User Cal, and the status of probe calibrations for probes that can be calibrated. Note that AutoProbes do not need to be calibrated, but InfiniiMax probes can be calibrated.
Agilent InfiniiVision 2000/3000 X-Series Oscilloscope Service Guide Troubleshooting Solving General Problems with the Oscilloscope Verifying Basic Operation Troubleshooting Internal Assemblies Read All Cautions and Warnings Before you begin any troubleshooting, read all Warning and Cautions in the “Troubleshooting” section. This chapter begins with “Solving General Problems with the Oscilloscope”.
Troubleshooting assembly- level repair for 350 MHz, 500 MHz, and 1 GHz bandwidth oscilloscopes: • To prepare for internal assembly troubleshooting. • To check the system board power supply test points. • To check the interboard supply connector voltages. • To check the line filter board AC output.
Check that the circuit under test is powered on. Press the [AutoScale] key. Obtain service from Agilent Technologies, if necessary. If the trace display is unusual or unexpected Check that the Horizontal time/division setting is correct for the expected frequency range of the input signals.
Troubleshooting Check that the trigger setup is correct. A correct trigger setup is the most important factor in helping you capture the data you desire. See the User’s Guide for information about triggering. Check that persistence in the Display menu is turned off, then press the Clear Display softkey.
Troubleshooting Verifying Basic Operation To power-on the oscilloscope 1 Connect the power cord to the rear of the oscilloscope, then to a suitable ac voltage source. The oscilloscope power supply automatically adjusts for input line voltages in the range of 100 to 240 VAC. Ensure that you have the correct line cord (see page 145).
Troubleshooting To perform hardware self test Pressing [Utility] > Service > Hardware Self Test performs a series of internal procedures to verify that the oscilloscope is operating properly. It is recommended you run Hardware Self Test: • After experiencing abnormal operation. •...
Troubleshooting To verify default setup The oscilloscope is designed to turn on with the setup from the last turn on or previous setup. To recall the default setup: 1 Press the [Default Setup] key. This returns the oscilloscope to its default settings and places the oscilloscope in a known operating condition.
Troubleshooting • Other: • Acquire mode normal. • Run/Stop to Run. • cursor measurements off. Figure 12 Default setup screen 2 If your screen looks substantially different, replace the system board. To perform an Auto Scale on the Probe Comp signal 1 Press the [Default Setup] key.
Troubleshooting 5 You should see a waveform on the oscilloscope’s display similar to this: If you see the waveform, but the square wave is not shaped correctly as shown above, perform the procedure “To compensate passive probes” on page 81. If you do not see the waveform, ensure your power source is adequate, the oscilloscope is properly powered- on, and the probe is connected securely to the front- panel analog...
Troubleshooting 1 Perform the procedure “To perform an Auto Scale on the Probe Comp signal” on page 80 2 Press the channel key to which the probe is connected ([1], [2], etc.). 3 In the Channel Menu, press Probe. 4 In the Channel Probe Menu, press Probe Check; then, follow the instructions on- screen.
If you need parts or assistance from Agilent Technologies to repair your instrument, go to www.agilent.com and locate the service facility for your area.
Troubleshooting To prepare for internal assembly troubleshooting HAZARDOUS VOLTAGES EXIST — REMOVE POWER FIRST ! WA R N I N G The procedures described in this section are performed with power supplied to the oscilloscope and with the protective covers removed. Only trained service personnel who are aware of the hazards involved should perform the procedures.
Troubleshooting 6 Re- connect the interboard supply cable as shown in the following figure. Figure 14 Setup for troubleshooting internal assemblies MAKE SURE EARTH GROUND IS MAINTAINED FOR THE FRONT DECK ! C A U T I O N For example, connect a cable with alligator clips between the rear deck chassis and the front deck chassis, or connect a BNC cable from one of the BNCs on the system board to a known grounded BNC on your workbench.
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Troubleshooting USE AN EXTERNAL FAN TO AVOID OVERHEATING COMPONENTS ! C A U T I O N When you remove the oscilloscope cover and main shield, use an external fan to provide continuous air flow over the heat sinks. Air flow over the heat sinks is reduced when the cover and main shield are removed, which leads to higher than normal operating temperatures.
Troubleshooting Flowchart for Troubleshooting Internal Assemblies The following flowchart is a simplified overview of troubleshooting the oscilloscope’s internal assemblies. Start System Interboard Power Replace Power Board Voltages Supply Voltages Supply Voltages Supply or Line Okay? Okay? Okay? Filter Board Replace Line Filter Board Display/ Replace Keyboard...
Troubleshooting System Board Drawings Use these drawings to locate test points on the 350 MHz, 500 MHz, and 1 GHz bandwidth oscilloscopes’ system board. Figure 15 System Board Test Points/Connectors - Top Side, Left 2000/3000 X-Series Oscilloscopes Service Guide...
Troubleshooting To check the system board power supply test points This procedure checks the power supply test points on the system board (see See Figure 16 on page 89). Values outside the expected range help identify bad assemblies. 1 Follow the instructions in “To prepare for internal assembly troubleshooting”...
Troubleshooting 6 Finally, check the supplies coming from the system board: Test Point Expected Value Assemblies If Good If Bad (near J3701) Supplied VM12V -11.5 V to System Board Indicates supply coming from Replace the system board. -12.5 V system board is good. VM8V -7.814 V to System Board...
Troubleshooting b If the VP13V bulk supply was good at the system board test point, but other supplies coming from the line filter board were bad at the system board test points, check them again at the interboard supply connector J108: Test Point Expected Value...
Troubleshooting Figure 18 Verify line filter board AC output • If you have AC power equal to what is being applied to J100 (power cord socket) on the line filter assembly, the AC mains portion of the line filter assembly is probably okay.
Troubleshooting To check the power switch This procedure verifies the operation of the power switch (S100) on the line filter board assembly. 1 Follow the instructions in “To prepare for internal assembly troubleshooting” on page 84. 2 With the power cord disconnected, verify the operation of the power switch (S100) using a DMM in the resistance measurement mode and a set of probes.
Troubleshooting If you do not measure these two values: • There may be something wrong with the power switch (S100 on the line filter assembly). • The cable that connects between J107 on the line filter assembly and J6 and J4 on the power supply could be wired wrong.
Troubleshooting If +13V is present between pins 1 and 4 of J4 on the power supply, either the cable is wired incorrectly or the power switch S100 is defective or has a solder short to ground between one or some of its pins. a Turn off the oscilloscope, and disconnect the power cord.
Troubleshooting 5 Check the display supplies: Test Point Expected Value Assemblies If Good If Bad (near J3701) Supplied VP23V +22.84 V to Display Replace the display assembly. Replace the system board. +24.2 V Backlight Power VP3V3 +3.3 V ±3% LCD, System If good when the display cable is Replace the line filter board.
Troubleshooting 3 With the power cord disconnected: a Disconnect the keyboard cable from the system board connector J3403. 4 Connect the power cord, and turn on the oscilloscope. 5 Check the keyboard supplies: Test Point Expected Value Assemblies If Good If Bad (near J3701) Supplied...
Troubleshooting 4 Measure the fan voltage at the connector on the line filter board. See the following figure for the location of the fan connector. 5 If the fan voltage is approximately +6.5 Vdc at room temperature, replace the fan. If the fan voltage is not approximately +6.5 Vdc, replace the line filter board.
Agilent InfiniiVision 2000/3000 X-Series Oscilloscope Service Guide Replacing Assemblies The service policy for 200 MHz and lower bandwidth oscilloscopes is unit replacement, so the instructions in this chapter are primarily for the 350 MHz, 500 MHz, and 1 GHz bandwidth oscilloscopes. This chapter describes how to remove assemblies from an oscilloscope.
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Replacing Assemblies Tools Used for Disassembly Use these tools to remove and replace the oscilloscope assemblies: • T6, T10, and T20 TORX drivers. • 5/8- inch socket driver or adjustable wrench (for BNC nuts). • Flat head screw driver. See how the Oscilloscope Parts Fit Together An exploded view of the oscilloscope is included in the “Replaceable Parts”...
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Replacing Assemblies REMOVE POWER TO AVOID DAMAGE! C A U T I O N Remove power before you begin to remove and replace assemblies. Do not remove or replace assemblies while the oscilloscope is turned on, or damage to the components can occur.
Replacing Assemblies To remove the front panel knobs The front panel knobs must be removed prior to localized front panel overlay installation or front panel disassembly. 1 Gently pull on the front panel knobs to remove them. Figure 21 Removing the front panel knobs 2000/3000 X-Series Oscilloscopes Service Guide...
Replacing Assemblies To remove the bucket assembly Removing the bucket assembly gives you access to the rear deck, fan assembly, power supply cover, power supply assembly, and power switch assembly. 1 Using T20 TORX driver, remove the four screws securing the bucket assembly to rear deck assembly.
Replacing Assemblies To remove the power supply shield 1 Using a TORX T10 driver, locate and remove the screw securing the power supply shield to the rear deck. Figure 24 Removing the power supply shield screw Sheet metal parts may have sharp edges. Handle with care to avoid injury. WA R N I N G 2000/3000 X-Series Oscilloscopes Service Guide...
Replacing Assemblies 2 When the screw has been removed, unclip the right side of the shield from the rear deck. Figure 25 Unclipping the power supply shield right side 3 When the screw has been removed and the shield has been unclipped, carefully remove the shield by lifting the 2000/3000 X-Series Oscilloscopes Service Guide...
Replacing Assemblies cover upward and then pulling its tabs out of the slots on the rear deck. Figure 26 Removing the power supply shield - lift and pull out 2000/3000 X-Series Oscilloscopes Service Guide...
Replacing Assemblies To remove the rear deck assembly Removing the rear deck allows access to the front deck and acquisition board. 1 Remove BNC securing nuts and washers. Figure 27 Removing the BNC nuts and washers 2 Using a T10 TORX driver, locate and remove all screws securing rear deck to front deck.
Replacing Assemblies Figure 28 Removing the top rear deck screws Figure 29 Removing the bottom right rear deck screw 2000/3000 X-Series Oscilloscopes Service Guide...
Replacing Assemblies Figure 32 Removing the option module guide to acquisition board screw 3 If the power supply shield has not already been removed, do that now. See “To remove the power supply shield” page 107. 2000/3000 X-Series Oscilloscopes Service Guide...
Replacing Assemblies 4 Disconnect the interboard supply cable from the acquisition board. You may need to use a screwdriver to pry the connector latch. Figure 33 Disconnecting the interboard supply cable from the acquisi- tion board 2000/3000 X-Series Oscilloscopes Service Guide...
Replacing Assemblies 5 Carefully separate the rear deck from the front deck. a Lift the front bezel latch that holds the rear deck. Figure 34 Lifting front bezel latch 2000/3000 X-Series Oscilloscopes Service Guide...
Replacing Assemblies b Carefully separate the rear deck from the front deck. Take care not to damage the extender switch. Figure 35 Separating the rear and front decks Figure 36 Rear and front decks separated 2000/3000 X-Series Oscilloscopes Service Guide...
Replacing Assemblies To remove the acquisition board These steps describes how to remove the acquisition board. 1 Using a TORK T6 driver, locate and remove the 4 screws on the front of the instrument (4 Channel version). Figure 37 Removing the T6 screws (4 channel version) 2000/3000 X-Series Oscilloscopes Service Guide...
Replacing Assemblies 2 Disconnect keyboard, display, and display backlight power cables. For the keyboard and display cables, flip up the connector clamp; then, slide the ribbon cables out. Figure 38 Disconnecting keyboard and display cables from acquisition board 2000/3000 X-Series Oscilloscopes Service Guide...
Replacing Assemblies For the display backlight power cable, slide the connector clamp toward the top of the acquisition board; then, slide the ribbon cable out. Figure 39 Disconnecting display backlight power cable from acquisition board 2000/3000 X-Series Oscilloscopes Service Guide...
Replacing Assemblies 3 Using a TORX T10 driver, locate and remove 13 mounting screws. Figure 40 Acquisition board mounting screw locations 4 Carefully lift the acquisition board off the front deck. 2000/3000 X-Series Oscilloscopes Service Guide...
Replacing Assemblies To remove the front panel assembly WA R N I N G Thin sheet metal parts may have sharp edges. Handle with care to avoid injury. 1 Remove the bezel from the front deck. The bezel is secured to front deck by molded- in retaining clips located around the perimeter of the bezel.
Replacing Assemblies Figure 43 All bezel clips released Figure 44 HINT: When reinstalling bezel, align ground terminal first 2000/3000 X-Series Oscilloscopes Service Guide...
Replacing Assemblies 2 When all the bezel clips are released, gently lift the front deck away from the bezel, and disconnect the keyboard cable. Figure 45 Gently lift front deck from bezel 2000/3000 X-Series Oscilloscopes Service Guide...
Replacing Assemblies Flip up the keyboard cable connector clamp; then, slide the ribbon cable out. Figure 46 Disconnect the keyboard cable 3 Remove the softkey board cable from the keyboard board. 2000/3000 X-Series Oscilloscopes Service Guide...
Replacing Assemblies 4 To separate the softkey board from the bezel, carefully pull back locking tabs that secure it. Figure 48 Unclip the softkey board from the bezel Figure 49 Remove the softkey keypad from the bezel 2000/3000 X-Series Oscilloscopes Service Guide...
Replacing Assemblies 5 To separate the keyboard board from the bezel, carefully pull back locking tabs that secure it. Figure 50 Unclip the keyboard board from the bezel Figure 51 Remove the keyboard keypad from the bezel 2000/3000 X-Series Oscilloscopes Service Guide...
Replacing Assemblies To remove the display assembly The display assembly is part of the front panel assembly. Before you can remove and replace the display assembly, you must remove the front panel assembly. See “To remove the front panel assembly” on page 122.
Replacing Assemblies Take care while threading display cables thru front deck sheet metal openings. Figure 53 Display assembly removed 2000/3000 X-Series Oscilloscopes Service Guide...
Replacing Assemblies Replacing a 75019-68712 Display Assembly Some 3000 X- Series oscilloscopes have the 75019- 68712 display assembly. Figure 54 The 75019-68712 display assembly has a bracket under two of the retaining screws If the 75019- 68712 display assembly needs to be replaced, it is replaced with: •...
Replacing Assemblies To retreive the 40-pin display cable 1 Once the 75019- 68712 display assembly has been removed, use a TORX T10 remove the two screws that secure the display to its mounting bracket. Figure 55 Disassembling the 75019-68712 display assembly 2 Carefully separate the upper and lower halves of the display mounting bracket.
Replacing Assemblies Figure 56 Separating the 75019-68712 display mounting bracket 3 Flip- up the 40- pin connector’s lid and remove the 75019- 61606 display cable. Figure 57 Removing the 75019-61606 display cable 2000/3000 X-Series Oscilloscopes Service Guide...
Replacing Assemblies To remove the fan assembly 1 Ensure that fan power cable has been disconnected from acquisition board. Figure 58 Disconnecting fan power cable 2000/3000 X-Series Oscilloscopes Service Guide...
Replacing Assemblies 2 Carefully slide fan assembly (fan and fan mount) to the right, then lift away from rear deck. Note, fan mount is soft and can be damaged by sharp sheet metal edges. Take care that the fan power cable is not damaged when pulling across sheet metal edges.
Replacing Assemblies To remove the power supply 1 Disconnect all cables from power supply board. Figure 60 Disconnecting the AC cable 2000/3000 X-Series Oscilloscopes Service Guide...
Replacing Assemblies Figure 61 Disconnecting the interboard supply cable from the line filter board Figure 62 Disconnecting the DC cable from the line filter board 2000/3000 X-Series Oscilloscopes Service Guide...
Replacing Assemblies 2 Using a TORX T10 driver, locate and remove the four screws securing the power supply assembly to the rear deck. Figure 63 Removing the power supply 2000/3000 X-Series Oscilloscopes Service Guide...
Replacing Assemblies To remove the line filter board 1 Disconnect all cables on the line filter board. 2 Remove the option module guide. Figure 64 Removing the option module guide 2000/3000 X-Series Oscilloscopes Service Guide...
Replacing Assemblies 3 Disconnect the ground wire from its chassis terminal. Figure 65 Disconnecting the ground wire 2000/3000 X-Series Oscilloscopes Service Guide...
Replacing Assemblies 4 Using a TORX T10 driver, locate and remove the three screws screws securing the line filter board to the rear deck. Figure 66 Removing the line filter board screws 2000/3000 X-Series Oscilloscopes Service Guide...
Replacing Assemblies 5 Slide the line filter board out of the slots in the rear deck. Take care that you do not damage the switch extender during removal. Figure 67 Removing the line filter board 2000/3000 X-Series Oscilloscopes Service Guide...
Replacing Assemblies 6 To remove the switch extender, gently pry open the extender using a flat head screwdriver. Twisting the latch too much could cause it to break! C A U T I O N Figure 68 Removing the power switch extender 2000/3000 X-Series Oscilloscopes Service Guide...
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Agilent InfiniiVision 2000/3000 X-Series Oscilloscope Service Guide Replaceable Parts This chapter describes how to order replaceable assemblies and parts for the Agilent 2000/3000 X- Series oscilloscopes. Diagrams and parts lists are included for assemblies and hardware that you can order. Before working on the oscilloscope, read the safety summary at the back of this book.
Listed Parts To order a part in the parts list, quote the Agilent Technologies part number, indicate the quantity desired, and address the order to the nearest Agilent Technologies Sales Office. To find your nearest sales office go to www.agilent.com.
Replaceable Parts In order for Agilent Technologies to provide these advantages, please send a check or money order with each order. Mail order forms and specific ordering information are available through your local Agilent Technologies Sales Office. Addresses and telephone numbers are located in a separate document shipped with the manuals.
Replaceable Parts Exploded Views The following exploded views provide a graphical representation of the oscilloscope at the time this manual was released. Not all parts are shown. Your parts may be slightly different than those shown. These views provide reference designator numbers that map to those used in the parts list table in this chapter.
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Replaceable Parts MP12 MP34 MP29 MP29 MP27 MP25 MP26 MP30 MP35 Figure 70 Exploded View 2 of 2 2000/3000 X-Series Oscilloscopes Service Guide...
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Replaceable Parts Table 18 Replaceable Parts (continued) Agilent Part Ref Des Number Description 75019-66422 PCA - 2 Channel Keyboard 3000 X-Series 75019-66423 PCA - 4 Channel Keyboard 3000 X-Series 75015-66427 PCA - Keyboard Entry Softkey Board 0950-5277 Power Supply Switching AC/DC 125W 75019-66424 PCA - Line Filter Board 75019-68707...
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Replaceable Parts Table 18 Replaceable Parts (continued) Agilent Part Ref Des Number Description 75013-94301 ID Label DSO-X 2014A 75013-94302 ID Label MSO-X 2014A 75014-94301 ID Label DSO-X 2022A 75014-94302 ID Label MSO-X 2022A 75015-94301 ID Label DSO-X 2024A 75015-94302 ID Label MSO-X 2024A 75016-94303 ID Label DSO-X 3012A 75016-94304...
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Replaceable Parts Table 18 Replaceable Parts (continued) Agilent Part Ref Des Number Description 75019-94304 BNC Label 2 Channel 75019-94305 BNC Label 4 Channel 75019-47401 Large Rotary Knob 75019-47402 Small Rotary Knob 75019-94302 Front Keyboard Label 2 Channel 75019-94303 Front Keyboard Label 4 Channel 75019-60201 Panel Bezel Assembly 75019-41901...
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Replaceable Parts Table 18 Replaceable Parts (continued) Agilent Part Ref Des Number Description MP33 75019-94310 Overlay - Traditional Chinese, 4 channel MP33 75019-94330 Overlay - Traditional Chinese, 2 channel MP33 75019-94312 Overlay - Japanese, 4 channel MP33 75019-94311 Overlay - Japanese, 2 channel MP33 75019-94315 Overlay - Russian, 4 channel...
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Replaceable Parts Table 18 Replaceable Parts (continued) Agilent Part Ref Des Number Description 75019-61604 Cable - Ground Wire 75019-61605 Soft Keyboard Cable 75019-61606 Cable - Display 75019-61607 Keyboard Cable 75019-61601 Cable Interboard Supply Power cord Part number varies by country. Contact your local Agilent sales office for replacement.
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Agilent InfiniiVision 2000/3000 X-Series Oscilloscope Service Guide Safety Notices This apparatus has been designed and tested in accordance with IEC Publication 1010, Safety Requirements for Measuring Apparatus, and has been supplied in a safe condition. This is a Safety Class I instrument (provided with terminal for protective earthing).
Safety Notices If you energize this instrument by an auto transformer (for voltage reduction or mains isolation), the common terminal must be connected to the earth terminal of the power source. Whenever it is likely that the ground protection is impaired, you must make the instrument inoperative and secure it against any unintended operation.
Safety Notices Safety Symbols Instruction manual symbol: the product is marked with this symbol when it is necessary for you to refer to the instruction manual in order to protect against damage to the product. Hazardous voltage symbol. Earth terminal symbol: Used to indicate a circuit common connected to grounded chassis.
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Safety Notices 2000/3000 X-Series Oscilloscopes Service Guide...
Index accuracy, DC vertical gain, equipment, test, NIST, accuracy, dual cursor, exchange assemblies, Agilent exploded view contact information, front panel, ordering parts, assemblies instrument, overvoltage category, exchange, replacing, fan assembly removal, parts front panel list, bandwidth exploded view, ordering, verification, removal, passive probe, front panel self test,...
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Index remove, troubleshooting, cabinet, equipment required, display assembly, 122, fan, fan assembly, flowchart, front panel, power supply, keyboard, power supply, power supply shield, user calibration, storage lid, replaceable parts list, replacing assemblies, run self-tests, verify bandwidth, digital channel, trigger, safety notice, 67, self test, front panel, self test, hardware, self-alignment, user cal,...