Service Guide Publication Number 54913-97022 March 2013 © Agilent Technologies, Inc.
Agilent Infiniium 90000 A-Series Oscilloscopes at a Glance Ease of use with high performance The Agilent Infiniium 90000 A-Series oscilloscopes combine unprecedented ease-ofuse with high-performance digitizing oscilloscope functionality to simplify your design and analysis measurement tasks. • Traditional oscilloscope front-panel interface provides direct access to the controls needed for most troubleshooting tasks.
In This Service Guide This guide provides the service documentation for the Agilent Technologies 90000 A-Series oscilloscopes. It is divided into seven chapters. Chapter 1, "General Information," describes which oscilloscope models are covered by this guide, environmental requirements, and oscilloscope dimensions. Chapter 2, "Calibration," explains how and when you should run the user calibration procedure.
Contents 1 General Information Instruments covered by this service guide 8 Performance-Enhanced Versus Standard Models 9 Accessories supplied 10 Specifications and Characteristics 10 Environmental Conditions 11 Measurement Category 11 Oscilloscope Dimensions 12 2 Calibration To run the self calibration 15 3 Testing Performance Performing Self-Test and Calibration 19 Offset Accuracy Test 21 DC Gain Accuracy Test 29 Analog Bandwidth - Maximum Frequency Check 35 Time Scale Accuracy (TSA) 42 Performance T
Contents To remove and replace the front panel bezel and front panel circuit assembly 97 To remove and replace the on/off board 101 To remove and replace the backlight inverter board 103 To remove and replace the touch screen, the front deck, and the controller assembly 104 To remove and replace the motherboard 107 To remove and replace the acquisition boards/backplane assembly 108 To remove the backplane assembly from the acquisition assemblies 112 To set the calibration factors after replacing the acquis
1 Instruments covered by this service guide 8 Accessories supplied 10 Specifications and Characteristics 10 Environmental Conditions 11 Measurement Category 11 Oscilloscope Dimensions 12 General Information
Instruments covered by this service guide Oscilloscopes manufactured after the date this manual was released may be different from those described in this manual. The release date of this manual is shown on the title page. This manual will be revised when necessary. If you have an oscilloscope that was manufactured after the release of this manual, please check the Agilent Technologies website at www.agilent.com to see whether a newer version of this manual is available.
Chapter 1: General Information Performance-Enhanced Versus Standard Models Performance-Enhanced Versus Standard Models In the fall of 2009, Agilent started shipping performance-enhanced models of the 90000 A-Series oscilloscope. This service guide covers both the standard and performance-enhanced versions of the 90000 A-Series scopes. Any differences between the two versions are noted.
Chapter 1: General Information Accessories supplied Accessories supplied The following accessories are supplied. • Mouse • Stylus • Keyboard • Accessory Pouch • Front panel Cover • Calibration Cable (not available or required for the DSO90254A) • Precision 3.
Chapter 1: General Information Environmental Conditions Environmental Conditions Overvoltage Category This product is intended to be powered by MAINS that comply to Overvoltage Category II, which is typical of cord-and-plug connected equipment. Pollution Degree The 90000 Series Oscilloscope may be operated in environments of Pollution Degree 2 (or Pollution Degree 1). Pollution Degree Definitions Pollution Degree 1: No pollution or only dry, non-conductive pollution occurs. The pollution has no influence.
Chapter 1: General Information Oscilloscope Dimensions Oscilloscope Dimensions The following pictures show the dimensions of the frame. '62 $ 'LJLWDO 6WRUDJH 2VFLOORVFRSH *+] +RUL]RQWDO *6D V 5XQ &RQWURO 3XVK IRU 9HUQLHU HUQLHU =RRP 11.13 in 283 mm 5XQ 6WRS 6LQJOH $XWR $UP G 7ULJ G 7ULJJHU (GJH 10.
2 To run the self calibration 15 Calibration
Calibration This chapter provides self calibration procedures for the oscilloscope.
Chapter 2: Calibration To run the self calibration To run the self calibration Let the Oscilloscope Warm Up Before Adjusting Warm up the oscilloscope for 30 minutes before starting calibration procedure. Failure to allow warm up may result in inaccurate calibration. The self calibration uses signals generated in the oscilloscope to calibrate channel sensitivity, offsets, and trigger parameters.
Chapter 2: Calibration To run the self calibration Figure 2-1 Clear this check box before starting calibration Click here to start calibration Calibration Dialog Box 4 Click Start, then follow the instructions on the screen. The routine will ask you to do the following things in sequence: a Decide if you want to perform the Time Scale Calibration. Your choices are: • Standard Calibration - Time scale calibration will not be performed.
3 Performance Test Interval 18 Performing Self-Test and Calibration 19 Vertical Performance Verification 20 Offset Accuracy Test 21 DC Gain Accuracy Test 29 Analog Bandwidth - Maximum Frequency Check 35 Time Scale Accuracy (TSA) 42 Performance Test Record 45 Testing Performance
This section documents performance test procedures.
Chapter 3: Testing Performance Performing Self-Test and Calibration Performing Self-Test and Calibration 1 Perform self tests a Pull down the Utilities menu and select Self Test. b Select Scope Self Test from the Self Test list. c Click on Start Self Test to start the self test procedure. If any of the self-tests fail, ensure that the failure is diagnosed and repaired before calibrating and testing performance. 2 Perform calibration. See “To run the self calibration” on page 15.
Vertical Performance Verification This section contains the following vertical performance verification: • Offset Accuracy Test • DC Gain Accuracy Test • Analog Bandwidth Test 20
Chapter 3: Testing Performance Offset Accuracy Test Offset Accuracy Test CAUTION Ensure that the input voltage to the oscilloscope never exceeds ±5 V. Let the oscilloscope warm up before testing The oscilloscope under test must be warmed up (with the oscilloscope application running) for at least 30 minutes prior to the start of any performance test. Specifications Offset Accuracy ≤ 3.5 V: ±(2% of channel offset + 1% of full scale + 1 mV) Full scale is defined as 8 vertical divisions.
Chapter 3: Testing Performance Offset Accuracy Test b When the Acquisition Setup window is displayed, enable averaging and set the # of averages to 256 as shown below. 3 Configure the scope to measure Average voltage on channel 1 as follows: a Change the vertical sensitivity of channel 1 to 5 mV/div. b Click the V avg measurement on the left side of the screen.
Chapter 3: Testing Performance Offset Accuracy Test c When the Enter Measurement Info window is displayed, ensure that the V avg function is set up as follows and then click OK: Source = Channel 1 Measurement Area = Entire Display 4 Press the Clear Display key on the scope and wait for the #Avgs value (top left corner of screen) to return to 256. Record the scope's mean V avg reading in the Zero Error Test section of the Performance Test Record.
Chapter 3: Testing Performance Offset Accuracy Test 6 Repeat step 5 for the remaining vertical sensitivities for channel 1 in the Zero Error Test section of the Performance Test Record. 7 Press Default Setup, then turn off channel 1 and turn channel 2 display on. 8 Configure the scope to measure V avg on Channel 2 as follows: a Pull down the Setup menu and select Acquisition. When the Acquisition Setup window is displayed, enable averaging and set the # of averages to 256.
Chapter 3: Testing Performance Offset Accuracy Test Offset Gain Test 12 Make the connections to scope channel 1 as shown below. Connections Notes: • Where it is used, it is important to connect the BNC Tee adapter directly to the scope channel input to minimize ground potential differences and to ensure that the DMM measures the input voltage to the scope channel as accurately as possible.
Chapter 3: Testing Performance Offset Accuracy Test b Pull down the Setup menu and select Acquisition. When the Acquisition Setup window is displayed, enable averaging and set the # of averages to 256. c Change the vertical sensitivity of channel 1 to 5 mV/div. d Click the V avg measurement icon on the left side of the screen.
Chapter 3: Testing Performance Offset Accuracy Test 15 Set the channel 1 offset value to 400.0 mV. This can be done using the front panel control or: a Pull down the Setup menu and select Channel 1 or click the Channel 1 setup icon. b Click the Offset control arrows to change the offset value or click on the offset value and enter 400.0 mV in the dialog box. c Enter 400.0 mV in the Enter Offset dialog box. Channel 1 setup icon 16 Set the Aux Out voltage (VAux Out) to +400.
Chapter 3: Testing Performance Offset Accuracy Test 18 Change the channel 1 offset value to -400.0 mV. 19 Set the Aux Out voltage to -400.0 mV. 20 Press the Clear Display key on the scope, wait for the #Avgs value (top left corner of 21 22 23 24 screen) to return to 256 and then record the DMM voltage reading as VDMM- and the scope Vavg reading as VScope- in the Offset Gain Test section of the Performance Test Record. Change the channel 1 offset value to 0 mV. Set the Aux Out voltage to 0 mV.
Chapter 3: Testing Performance DC Gain Accuracy Test DC Gain Accuracy Test CAUTION Ensure that the input voltage to the oscilloscope never exceeds ±5 V. Let the oscilloscope warm up before testing The oscilloscope under test must be warmed up (with the oscilloscope application running) for at least 30 minutes prior to the start of any performance test. Specifications DC Gain Accuracy ±2% of full scale at full resolution channel scale Full scale is defined as 8 vertical divisions.
Chapter 3: Testing Performance DC Gain Accuracy Test Procedure 1 Make the connections to scope channel 1 as shown below. Connections Notes: • Where it is used, it is important to connect the BNC Tee adapter directly to the scope channel input to minimize ground potential differences and to ensure that the DMM measures the input voltage to the scope channel as accurately as possible. Differences in ground potential can be a significant source of measurement error, particularly at high scope sensitivities.
Chapter 3: Testing Performance DC Gain Accuracy Test b When the Acquisition Setup window is displayed, enable averaging and set the # of averages to 256 as shown below. 3 Set the Aux Out voltage (VAux Out) to +15 mV as follows: a Pull down the Utilities menu and select Calibration. b Change the Aux Output function to DC (top left corner). c Set the Level to 15 mV. d Click on Close. 4 Set the channel 1 vertical sensitivity value to 5 mV/div.
Chapter 3: Testing Performance DC Gain Accuracy Test c Select the Vavg measurement as shown below.
Chapter 3: Testing Performance DC Gain Accuracy Test Record the mean reading 6 Change the Aux Out voltage to -15 mV. 7 Press the Clear Display key on the scope, wait for the #Avgs value to return to 256 and 8 9 10 11 then record the DMM voltage reading and the scope V avg reading in the DC Gain Test section of the Performance Test Record. Repeat step 7 for the remaining vertical sensitivities for channel 1 shown in the DC Gain Test section of the Performance Test Record.
Chapter 3: Testing Performance DC Gain Accuracy Test 15 Calculate the offset gain using the following expression and record this value in the DC Gain Test section of the Performance Test Record.
Chapter 3: Testing Performance Analog Bandwidth - Maximum Frequency Check Analog Bandwidth - Maximum Frequency Check CAUTION Ensure that the input voltage to the oscilloscope never exceeds ±5 V. Let the oscilloscope warm up before testing The oscilloscope under test must be warmed up (with the oscilloscope application running) for at least 30 minutes prior to the start of any performance test. Specification Analog Bandwidth (-3 dB) DSO/DSA91304A 12.0 GHz, 11.8 GHz at 5 mV/div DSO/DSA91204A 12.
Chapter 3: Testing Performance Analog Bandwidth - Maximum Frequency Check Connections Microwave CW Generator E8257D Power meter E4418A or E4419A Power splitter 11667B Power sensor cable SMA to BNC adapter SMA adapter Power sensor E4413A Microwave cable Notes • Connect output 1 of the 11667B splitter to the scope Channel n input directly using the 54855-67604 adapter, without any additional cabling or adapters.
Chapter 3: Testing Performance Analog Bandwidth - Maximum Frequency Check c Set the horizontal scale to 16 ns/div (to display 8 cycles of a 50 MHz waveform). Click here and enter 16E-9 d Pull down the Setup menu, select Acquisition and then set up the acquisition parameters as follows: Memory Depth = Automatic Sampling rate = Maximum (40 GSa/s) Sin(x)/x Interpolation filter enabled Averaging = Disabled e Pull down the Measure menu, select Voltage and then select V rms.
Chapter 3: Testing Performance Analog Bandwidth - Maximum Frequency Check f When the RMS voltage measurement setup window is displayed, configure this measurement as follows: Source = Channel 1 Measurement Area = Entire Display RMS Type = AC 7 Set the generator to apply a 50 MHz sine wave with a peak-to-peak amplitude of about 4 divisions. • Use the following table to determine the approximate required signal amplitude. The amplitude values in the table below are not absolutely required.
Chapter 3: Testing Performance Analog Bandwidth - Maximum Frequency Check 9 Press the Clear Display key on the scope and record the scope V rms reading in the Analog Bandwidth - Maximum Frequency Check section of the Performance Test Record (Vout @ 50 MHz). For all scope readings in this procedure, use the mean value in the Measurements display area at the bottom of the screen.
Chapter 3: Testing Performance Analog Bandwidth - Maximum Frequency Check 11 Change the generator frequency to the maximum value for the model being tested as shown in the table below. It is not necessary to adjust the signal amplitude at this point in the procedure. Setting Model DSO/DSA90254A DSO/DSA90404A DSO9/DSA0604A Maximum Frequency 2.5 GHz 4.0 GHz 6.0 GHz Scope Time Base Setting 100 ps/div 100 ps/div 100 ps/div Model DSO/DSA90804A DSO/DSA91204A DSO/DSA91304A Maximum Frequency 8.
Chapter 3: Testing Performance Analog Bandwidth - Maximum Frequency Check 16 Change the scope set up as follows: a Change the channel vertical sensitivity to 10 mV/div. b Reset the horizontal scale to 16 ns/div (to display 8 cycles of a 50 MHz waveform). 17 Change the generator output as follows: a Reset the generator frequency to 50 MHz. b Change the amplitude to the value suggested for this sensitivity in Table 3-1.
Chapter 3: Testing Performance Time Scale Accuracy (TSA) Time Scale Accuracy (TSA) This procedure verifies the maximum TSA specification for the oscilloscope. Description TSA refers to the absolute accuracy of oscilloscope’s time scale. Because TSA depends directly on frequency of a crystal oscillator, it is comprised of two components: an initial accuracy component, and an aging component.
Chapter 3: Testing Performance Time Scale Accuracy (TSA) Connections Connect the equipment as shown in the following figure. Procedure 1 Configure the sine wave source to output a 0 dBm (600 mVpp) sine wave into 50 ohms 2 3 4 5 6 7 8 9 10 11 12 13 14 with a frequency of 10.00002000 MHz. Adjust source amplitude such that displayed sine wave is 600 mVpp. Press the Default Setup key on the oscilloscope. Set channel 1's vertical scale to 100 mV/div. Set the oscilloscope sample rate to 100 kSa/s.
Chapter 3: Testing Performance Time Scale Accuracy (TSA) measurement result should exceed the specified accuracy by at least 0.1 ppm in order to guarantee compliance to the specification. 16 Record the results in the Performance Test Record.
Performance Test Record Agilent Technologies Agilent 90000 Series Oscilloscopes Model Number _____________________ Tested by___________________ Serial Number ___________________________ Work Order No.
Chapter 3: Testing Performance Performance Test Record Offset Gain Test Vertical Sensitivity Channel 1 5 mV/div 10 mV/div 20 mV/div 50 mV/div 100 mV/div 200 mV/div 500 mV/div 1 V/div Channel 2 5 mV/div 10 mV/div 20 mV/div 50 mV/div 100 mV/div 200 mV/div 500 mV/div 1 V/div Channel 3 5 mV/div 10 mV/div 20 mV/div 50 mV/div 100 mV/div 200 mV/div 500 mV/div 1 V/div Channel 4 5 mV/div 10 mV/div 20 mV/div 50 mV/div 100 mV/div 200 mV/div 500 mV/div 1 V/div VAux Out Setting VDMM+ VDMM- VDMM0 VScope+ VScope-
Chapter 3: Testing Performance Performance Test Record DC Gain Test Vertical Sensitivity Channel 1 5 mV/div 10 mV/div 20 mV/div 50 mV/div 100 mV/div 200 mV/div 500 mV/div 1 V/div Channel 2 5 mV/div 10 mV/div 20 mV/div 50 mV/div 100 mV/div 200 mV/div 500 mV/div 1 V/div Channel 3 5 mV/div 10 mV/div 20 mV/div 50 mV/div 100 mV/div 200 mV/div 500 mV/div 1 V/div Channel 4 5 mV/div 10 mV/div 20 mV/div 50 mV/div 100 mV/div 200 mV/div 500 mV/div 1 V/div VAux Out Setting VDMM+ VDMM- VScope+ VScope- Calculated
Chapter 3: Testing Performance Performance Test Record Analog Bandwidth - Maximum Frequency Check Max frequency: DSO/DSA90254A = 2.5 GHz, DSO/DSA90404A = 4.0 GHz, DSO/DSA90604A = 6.0 GHz, DSO/DSA90804A = 8.0 GHz DSO/DSA91204A = 12.0 GHz (11.8 GHz at 5 mV/div), DSO/DSA91304A = 12.0 GHz (11.8 GHz at 5 mV/div).
Chapter 3: Testing Performance Performance Test Record Test Limits Results Time Scale Accuracy Limit Limit is based on years since oscilloscope’s last calibration Calculated TSA Spec Measured time scale error Pass/Fail TSA = ±(0.4 + 0.
Chapter 3: Testing Performance Performance Test Record 50
4 Safety 52 Tools Required 52 ESD Precautions 52 Default Setup 52 To troubleshoot the oscilloscope 53 Primary Trouble Isolation 54 Power Supply Trouble Isolation 57 Display Trouble Isolation 71 To check the backlight inverter voltages 73 To check the display board video signals 74 Front Panel Display Trouble Isolation 75 Front Panel Trouble Isolation 77 Motherboard Verification 78 To setup the BIOS 79 Acquisition/Backplane Assembly Trouble Isolation - Scope Self Tests 80 AutoProbe Board Trouble Isolation 8
Troubleshooting This section provides troubleshooting information for the Agilent Technologies 90000 Series oscilloscopes. The service strategy of this oscilloscope is replacement of defective assemblies. Safety Read the Safety Notices at the back of this manual before servicing the oscilloscope. Before performing any procedure, review it for cautions and warnings.
Chapter 4: Troubleshooting To troubleshoot the oscilloscope To troubleshoot the oscilloscope The troubleshooting procedure is used to isolate problems to a faulty assembly. When you find the faulty assembly, use the disassembly and assembly procedures in "Replacing Assemblies," beginning on page 89 to replace the assembly. The primary procedural tool in this section is the Primary Trouble Isolation section. This section refers to sections in this chapter where the procedures are described in detail.
Chapter 4: Troubleshooting Primary Trouble Isolation Primary Trouble Isolation A Perform power-up. Connect the oscilloscope power cord and press the power button in the lower left corner of the front panel. If the oscilloscope is working properly, it will start up and the graticule will appear on the screen. The exact appearance may vary depending on the setup selected before the oscilloscope was turned off.
Chapter 4: Troubleshooting Primary Trouble Isolation D Check the front panel response by running the Keyboard and LED self tests. Use this procedure to verify correct keyboard operation. 1 Select Self Test from the Utilities menu. 2 Select Keyboard Test from the Self Test drop down list box, then click Start. A new window appears with a symbolic representation of the keyboard. See Figure 4-2.
Chapter 4: Troubleshooting Primary Trouble Isolation Figure 4-3 LED Test Screen 3 Repeatedly press the Single button on the front panel to step through and highlight each LED symbol in the test screen. You can also step through the LEDs by pressing the <> buttons on the display screen. Verify that the corresponding LEDs on the front panel are the only ones illuminated.
Chapter 4: Troubleshooting Power Supply Trouble Isolation Power Supply Trouble Isolation WARNING SHOCK HAZARD! The maintenance described in this section is 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 maintenance. Read the safety summary at the back of this book before proceeding.
Chapter 4: Troubleshooting Power Supply Trouble Isolation Figure 4-4 58
Chapter 4: Troubleshooting Power Supply Trouble Isolation These trouble isolation instructions help isolate the problem to the assembly level when the power system is not operating. Because of advanced power system protection features, the problem may not be with the supply itself, and therefore you will need to work through the procedure systematically to determine the source of the fault.
Chapter 4: Troubleshooting Under-Voltage Fault Under-Voltage Fault If the oscilloscope turns off without you pressing the front panel power button then the first step is to unplug the oscilloscope so the +5V standby supply can fully discharge (this takes around 30 seconds). Then plug the oscilloscope back in. Press the front panel power button and count how many seconds it takes for the oscilloscope to lose power again (once the oscilloscope loses power, keep it plugged in).
Chapter 4: Troubleshooting Under-Voltage Fault (LOWER ACQ). If any of the following three indicator LEDs are illuminated (BP POL FAIL, NEG SUPPLY FAIL, or FPGA SUPPLY FAIL), replace the backplane assembly. If the FP SUPPLY FAIL LED is on by itself, there may be a problem with one of the supplies that goes to the front panel assembly or there may be a problem on the front panel assembly itself. Unplug the front panel power-connector (see cable circled in Figure 4-6) and turn the unit on again.
Chapter 4: Troubleshooting Under-Voltage Fault oscilloscope. On the backplane assembly, measure the resistance across the FET (Q1409) between +12V and ground as shown in Figure 4-10 (Q1409 is located in the upper right hand corner of the backplane) or measure the resistance across the bulk supply input pins on the backplane assembly. Make sure you have the red lead plugged into the HI input and the black lead plugged into the LO or COMMON input of the DVM.
Chapter 4: Troubleshooting Under-Voltage Fault If there is still a short circuit, then both acquisition boards need to be removed. Once the acquisition assemblies have been removed and unplugged from the backplane assembly, measure each assembly individually to see if there is a short between the +12V net and ground (see the figure below). The resistance you should see on a good acquisition assembly between the +12V net and ground is about 2000 ohms.
Chapter 4: Troubleshooting Under-Voltage Fault Figure 4-10 This figure shows how to measure the backplane assembly resistance between +12V and ground across Q1409.
Chapter 4: Troubleshooting Over-Temperature Fault Over-Temperature Fault If the oscilloscope turns off without you pressing the front panel power button, the first step is to unplug the oscilloscope so the +5V standby supply can fully discharge (this takes around 30 seconds). Then plug the oscilloscope back in. Press the front panel power button and count how many seconds it takes for the oscilloscope to lose power again (once the oscilloscope loses power, keep it plugged in).
Chapter 4: Troubleshooting Over-Temperature Fault Once you can see the case fans, apply AC power to the instrument and turn it on if it does not start up automatically. Visually check to see if any of the fans are not turning. If all the fans are not turning, it is probably a problem with the high side drive circuitry for the case fans.
Chapter 4: Troubleshooting Over-Temperature Fault Apply AC power and turn the instrument on if it does not start up on its own. Observe whether the trigger ICs fan is turning. If it is not, replace it and redo this part of the diagnostic test. If it is turning and the instrument turns off after four seconds or more then consider the following. If any of the case fans were turning and the trigger ICs fan was turning, the problem is most likely that the rotation sensor on the ICs fan is defective.
Chapter 4: Troubleshooting Over-Voltage Fault Over-Voltage Fault If the oscilloscope turns off without you pressing the front panel power button, the first step is to unplug the oscilloscope so the +5V standby supply can fully discharge (this takes around 30 seconds). Then plug the oscilloscope back in. Press the front panel power button and count how many seconds it takes for the oscilloscope to lose power again (once the oscilloscope loses power, keep it plugged in).
Chapter 4: Troubleshooting Over-Voltage Fault Figure 4-15 The second and third groups of over-voltage LEDs are located behind this fan Fan opening to look through to see the second and third groups of over-voltage indicator LEDs. The following picture (Figure 4-16) shows the fan opening with the fan removed. This is done to shows where these LEDs are located on the acquisition assemblies and is not required in your actual diagnosis.
Chapter 4: Troubleshooting Over-Voltage Fault Figure 4-16 The acquisition assembly nearest the bottom of the instrument is the channels 1 and 2 acquisition assembly (LOWER ACQ) while the one above it is the channels 3 and 4 acquisition assembly (UPPER ACQ). If you look through the fan and see any of these over-voltage LEDs illuminated, that acquisition assembly needs to be replaced.
Chapter 4: Troubleshooting Display Trouble Isolation Display Trouble Isolation 71
Chapter 4: Troubleshooting Display Trouble Isolation No Display Trouble Isolation A B D Remove cabinet and install fan guard Check fan connections and power-on Replace Display Board Display on oscilloscope? Yes Done. Yes Done. Yes Done. No Fans running? Power LED lit? No Go to 'Power Supply Trouble Isolation.' E Replace Motherboard Assembly Yes No C Connect external monitor, cycle power, and check power up sequence Display on oscilloscope? No Power-up displayed on ext.
Chapter 4: Troubleshooting To check the backlight inverter voltages To check the backlight inverter voltages The backlight inverter board MP13 is located in the front-left corner of the oscilloscope (as you face the front panel). • There is an input connector at one side of the board. • There are two output connectors on the other end of the board, that power the two backlights which are inserted into the flat panel display.
Chapter 4: Troubleshooting To check the display board video signals To check the display board video signals The video signals are checked on the 32-pin connector J2 on the display board MP12. You can use an oscilloscope with a bandwidth of at least 100 MHz to verify the signals. Even-numbered pins are closest to the PC board. If the signals are not present, suspect the display card. If the signals are present and the backlights are on, suspect the flat-panel display as the problem.
Chapter 4: Troubleshooting Front Panel Display Trouble Isolation Front Panel Display Trouble Isolation Front Panel Display Trouble Isolation Connect external monitor to VGA port. Turn unit on. Does display appear on ext. monitor ? No Replace motherboard. Yes Check display cable connection to display card and LCD No Is front Panel black? Yes Does front panel display work? Check inverter board control cable. No Check voltage on pin 1 of J3 on display card. Should be 12V.
Chapter 4: Troubleshooting Front Panel Display Trouble Isolation WARNING SHOCK HAZARD! The backlight inverter assembly, which is mounted at the front corner of the oscilloscope near the flat-panel display, operates at 1.65 kV at turn on. DO NOT handle this assembly while it is in operation. An LED on the inverter board illuminates to indicate the presence of high voltage. WARNING INJURY CAN RESULT! Once the cover is removed, the fan blades are exposed both inside and outside the chassis.
Chapter 4: Troubleshooting Front Panel Trouble Isolation Front Panel Trouble Isolation Front Panel Trouble Isolation Follow the keyboard troubleshooting guide for just the power button. Go to 'Primary Trouble Isolation'.
Chapter 4: Troubleshooting Motherboard Verification Motherboard Verification If you have been through the Power Supply Trouble Isolation section of this chapter and the oscilloscope still does not stay powered up, the problem may be with the motherboard. To diagnose this problem, follow these steps. First remove the handle, outer case, and top shield. Then turn the oscilloscope on.
Chapter 4: Troubleshooting To setup the BIOS To setup the BIOS If the BIOS settings become corrupt, the Infiniium oscilloscope PC motherboard will not recognize the hard drive and the oscilloscope may not start. To configure the motherboard BIOS parameters to the default settings, follow these steps: 1 Connect the power cable to the Infiniium oscilloscope. 2 Connect the external keyboard to the rear panel.
Chapter 4: Troubleshooting Acquisition/Backplane Assembly Trouble Isolation - Scope Self Tests Acquisition/Backplane Assembly Trouble Isolation - Scope Self Tests If the Acquisition assemblies or Backplane assembly have been removed by a prior procedure, reinstall them. Power up the oscilloscope and then go under Utilities > Self Test. Select the Scope Self Test option from the Self Test pull-down menu and then press the Start Test button.
Chapter 4: Troubleshooting Acquisition/Backplane Assembly Trouble Isolation - Scope Self Tests Timebase Test Group • Timebase Interpolator Test - This test validates the timebase interpolator hardware by verifying that it is able to produce unique values for different trigger settings. If this test fails, there may be a problem with the timebase interpolator IC located on the backplane board.
Chapter 4: Troubleshooting Acquisition/Backplane Assembly Trouble Isolation - Scope Self Tests Misc. Scope Test Group • Temp Sensor Test - This test verifies that all of the temperature sensors in the oscilloscope are reading values within the expected range. Temperature sensors exist for each of the Hedwig memory controller ICs, each of the ADC ICs, and each of the front end ICs.
Chapter 4: Troubleshooting AutoProbe Board Trouble Isolation AutoProbe Board Trouble Isolation AutoProbe Board Trouble Isolation Inspect the cable between the AutoProbe assembly and the power board. Cable OK? No Replace bad cable. Yes Turn unit on. Does unit turn ON? No Replace AutoProbe assembly. Yes Go to 'Primary Trouble Isolation.
Chapter 4: Troubleshooting To check the keyboard; Trouble Isolation Procedure To check the keyboard; Trouble Isolation Procedure Use this procedure only if you encounter key failures in the keyboard self test procedure. If any knobs fail, replace the keyboard assembly. 1 Disconnect the power cord and remove the cover. 2 Remove the front panel assembly. See chapter 6 for instructions. 3 Remove the keyboard assembly from the front panel assembly.
Chapter 4: Troubleshooting To check the LEDs To check the LEDs If you see a failure with the on/off switch backlight LED, replace the ON/OFF board. If the LED will still not illuminate, replace the motherboard and see if this fixes the problem. If the LED still does not work, the last option is to check the on/off cable connecting the ON/OFF board to the motherboard.
Chapter 4: Troubleshooting Software Revisions Software Revisions • Select About Infiniium... from the Help Menu. A dialog box appears showing the current version number for the scope software and on-line information system software. This information may be useful when contacting Agilent Technologies for further service information. See Figure 4-20. Figure 4-20 About Infiniium...
Chapter 4: Troubleshooting To check probe power outputs To check probe power outputs Probe power outputs are on the front panel, surrounding each BNC input. Use the table and figure to the right to check the power output at the connectors. The +12 V and –12 V supplies come from ripple regulator on the power board, and the +3 V and –3 V supplies are developed in three-terminal regulators on the probe power and control assembly.
Chapter 4: Troubleshooting To check probe power outputs 88
5 ESD Precautions 90 Tools Required 90 To return the oscilloscope to Agilent Technologies for service 91 To remove and replace the cover, top plate, and bottom plate 92 To remove and replace the on/off board 101 To remove and replace the backlight inverter board 103 To remove and replace the touch screen, the front deck, and the controller assembly 104 To remove and replace the acquisition boards/backplane assembly 108 To set the calibration factors after replacing the acquisition board 113 To remove and r
Replacing Assemblies Use the procedures in this chapter when removing and replacing assemblies and parts in the Agilent Technologies oscilloscopes. In general, the procedures that follow are placed in the order to be used to remove a particular assembly. The procedures listed first are for assemblies that must be removed first. The graphics in this chapter are representative of the oscilloscope at the time of this printing. Your unit may look different.
Chapter 5: Replacing Assemblies To return the oscilloscope to Agilent Technologies for service WARNING SHOCK HAZARD! When the bulk 12V power supply is removed from the oscilloscope, two AC leads are exposed. Therefore, the power cable should be disconnected from the bulk 12V power supply before the supply is removed. Caution should also be exercised to not contact these leads as severe shock could result.
Chapter 5: Replacing Assemblies To remove and replace the cover, top plate, and bottom plate To remove and replace the cover, top plate, and bottom plate Use this procedure to remove and replace the cover, top plate, and bottom plate. When necessary, refer to other removal procedures. The pictures in this chapter are representative of the oscilloscope at the time of this printing. Your unit may look different. 1 2 3 4 5 Disconnect the power cable.
Chapter 5: Replacing Assemblies To remove and replace the cover, top plate, and bottom plate Figure 5-3 Figure 5-4 8 Carefully slide the cover towards the rear of the instrument and off the chassis as shown in Figure 5-5.
Chapter 5: Replacing Assemblies To remove and replace the cover, top plate, and bottom plate T10 screws from its edges as shown in Figure 5-6. Then pull back on the top plate and lift off as shown in Figure 5-7. Figure 5-6 Figure 5-7 10 To remove the bottom plate, flip the oscilloscope upside down and remove the three Torx T20 screws from the bottom panel as shown in Figure 5-8. Then remove the three Torx T20 screws from the bottom edge of the rear panel as shown in Figure 5-9.
Chapter 5: Replacing Assemblies To remove and replace the cover, top plate, and bottom plate Figure 5-8 Figure 5-9 Figure 5-10 11 To replace the cover, top plate, and bottom plate, reverse the above procedure.
Chapter 5: Replacing Assemblies To remove and replace the cover, top plate, and bottom plate marked by lines on four sides of the hole as shown in Figure 5-11 Figure 5-11 CAUTION PROPERLY TIGHTEN HANDLE AND SCREWS! Tighten the side handle screws to 2.4 Nm (21 in-lbs).
Chapter 5: Replacing Assemblies To remove and replace the front panel bezel and front panel circuit assembly To remove and replace the front panel bezel and front panel circuit assembly 1 Disconnect the power cable and remove the cover, top plate, and bottom plate as described above in the section on removing the cover, top plate, and bottom plate. 2 Disconnect front panel cables. 3 Grasp and pull on all 13 knobs located on the front panel to remove them (Figure 5-12).
Chapter 5: Replacing Assemblies To remove and replace the front panel bezel and front panel circuit assembly Figure 5-13 Figure 5-14 5 Remove two Torx T10 screws from the front panel printed circuit assembly as shown in Figure 5-15.
Chapter 5: Replacing Assemblies To remove and replace the front panel bezel and front panel circuit assembly Figure 5-15 6 Disengage the tabs located along the edges of the control panel faceplate. There are three tabs located along the right hand side (see Figure 5-16). There are two additional tabs located on the top and bottom of the left edge. You will need to look inside the instrument to see these tabs and hence, you need the top and bottom plates removed as discussed in step 1.
Chapter 5: Replacing Assemblies To remove and replace the front panel bezel and front panel circuit assembly Figure 5-16 Figure 5-17 This figure shows the top left hand side tab for the control panel faceplate. The view is through the top cavity, standing at the rear of the instrument, and looking towards the front (over the backplane board).
Chapter 5: Replacing Assemblies To remove and replace the on/off board Figure 5-18 This figure shows the other left hand side tab for the control panel faceplate. This view is with the oscilloscope turned on its side and looking at this tab from underneath the instrument. 8 To replace the front panel assembly, reverse the above procedure.
Chapter 5: Replacing Assemblies To remove and replace the on/off board Figure 5-20 4 To replace the on/off board, reverse the above procedure.
Chapter 5: Replacing Assemblies To remove and replace the backlight inverter board To remove and replace the backlight inverter board Use this procedure to remove and replace the backlight inverter board. When necessary, refer to other removal procedures. The graphics in this chapter are representative of the oscilloscope at the time of this printing. Your unit may look different.
Chapter 5: Replacing Assemblies To remove and replace the touch screen, the front deck, and the controller assembly To remove and replace the touch screen, the front deck, and the controller assembly Use this procedure to disassemble and reassemble the keyboard, touch screen, and flat-panel display. When necessary, refer to other removal procedures. The graphics in this chapter are representative of the oscilloscope at the time of this printing. Your unit may look different.
Chapter 5: Replacing Assemblies To remove and replace the touch screen, the front deck, and the controller assembly 6 To remove the front deck off the chassis, remove four Torx T10 screws from the front deck (two on the right hand side and two on the left hand side) - See Figure 5-24. Figure 5-24 7 Turn the oscilloscope upside down or on its side and look through the bottom cavity to see the SMA connectors attached to the front deck (Figure 5-25). Remove these SMA connectors with a wrench.
Chapter 5: Replacing Assemblies To remove and replace the touch screen, the front deck, and the controller assembly Figure 5-26 9 You can now remove the controller board and backlight inverter board from the back of the front deck if these need to be replaced by removing the Torx T20 screws attached to them. 10 To reassemble the front deck and touch screen, reverse the above procedure. Note: Before reattaching the front deck to the frame, attach the touch screen to the front deck.
Chapter 5: Replacing Assemblies To remove and replace the motherboard To remove and replace the motherboard 1 Disconnect the power cable and remove the cover and top plate. 2 Disconnect all the cables from the motherboard (see a list of these cables on page 117). 3 Remove the Torx T10 screws attaching the motherboard to the frame (Figure 5-28). The motherboard shown below is the one in the standard 90000A models.
Chapter 5: Replacing Assemblies To remove and replace the acquisition boards/backplane assembly To remove and replace the acquisition boards/backplane assembly Use this procedure to remove and replace the acquisition boards/backplane assembly. When necessary, refer to other removal procedures. The graphics in this chapter are representative of the oscilloscope at the time of this printing. Your unit may look different. 1 Disconnect the power cable and remove the cover, top plate, and bottom plate.
Chapter 5: Replacing Assemblies To remove and replace the acquisition boards/backplane assembly Figure 5-32 6 Remove the Torx T20 screws from the top of the backplane assembly (Figure 5-33). Figure 5-33 7 Flip the instrument so it is upside down or on its side. 8 Remove the Torx T20 screws from back lower side of the rear of the instrument (Figure 5-34).
Chapter 5: Replacing Assemblies To remove and replace the acquisition boards/backplane assembly Figure 5-34 9 Remove the two Torx T20 screws from the underside of the backplane assembly (Figure 5-35). Figure 5-35 10 If unit is not upside down (if you chose to just lay it on its side), go ahead and flip it upside down right now. Then lift the entire acquisition boards/backplane assembly out of the instrument using the handles on the bottom (Figure 5-36).
Chapter 5: Replacing Assemblies To remove and replace the acquisition boards/backplane assembly Figure 5-36 111
Chapter 5: Replacing Assemblies To remove the backplane assembly from the acquisition assemblies To remove the backplane assembly from the acquisition assemblies 1 Remove the entire acquisition/backplane assembly as described in the previous section. 2 Remove the four Torx T20 screws (two per acquisition assembly) on the side of the backplane assembly (Figure 5-37). Figure 5-37 3 Gently pry on the sheet metal portions to separate the backplane assembly from each of the acquisition assemblies.
Chapter 5: Replacing Assemblies To set the calibration factors after replacing the acquisition board To set the calibration factors after replacing the acquisition board The following procedure must be performed after replacing the acquisition board. This procedure only needs to be performed once after the acquisition board is replaced.
Chapter 5: Replacing Assemblies To set the calibration factors after replacing the acquisition board c Pull down the Utilities menu and select Calibration. d Uncheck the Cal Memory Protect box to allow calibration. e Click on Start to start the calibration procedure. Follow the on-screen instructions as calibration proceeds.
Chapter 5: Replacing Assemblies To remove and replace the hard disk drive and the hard drive control board To remove and replace the hard disk drive and the hard drive control board Use this procedure to remove and replace the hard disk drive. When necessary, refer to other removal procedures. The graphics in this chapter are representative of the oscilloscope at the time of this printing. Your unit may look different. 1 Disconnect the power cable and remove the cover and top plate.
Chapter 5: Replacing Assemblies To remove and replace the hard disk drive and the hard drive control board Figure 5-41 6 To replace the hard disk drive and hard drive control board, reverse the above procedure.
Chapter 5: Replacing Assemblies Cable removal (for replacing the motherboard) Cable removal (for replacing the motherboard) This section shows the various cables that need to be removed when replacing the motherboard. 1 Disconnect the power cable and remove the top cover. 2 Disconnect all cables from the motherboard. Figure 5-42 shows an overview of the cables that need to be removed from the standard 90000 A-Series motherboard. The subsequent pictures show close-ups of each cable.
Chapter 5: Replacing Assemblies Cable removal (for replacing the motherboard) Figure 5-43 SATA cable between motherboard and hard drive Figure 5-44 Front panel USB cable Figure 5-45 SATA cables between backplane and motherboard 118
Chapter 5: Replacing Assemblies Cable removal (for replacing the motherboard) Figure 5-46 Display cable between motherboard and front panel Figure 5-47 Power harness between backplane and motherboard Figure 5-48 Power cable for CPUfan 119
Chapter 5: Replacing Assemblies Cable removal (for replacing the motherboard) Figure 5-49 Power harness between backplane and motherboard Figure 5-50 On/ Off cable 120
Chapter 5: Replacing Assemblies Cable removal (for replacing the motherboard) Figure 5-51 Motherboard and cables in performance-enhanced 90000 A-Series models 121
Chapter 5: Replacing Assemblies To remove and replace the power supply To remove and replace the power supply Use this procedure to remove and replace the power supply. When necessary, refer to other removal procedures. The graphics in this chapter are representative of the oscilloscope at the time of this printing. Your unit may look different. WARNING SHOCK HAZARD! If the power supply is defective it could have a dangerous charge on some capacitors.
Chapter 5: Replacing Assemblies To remove and replace the fans To remove and replace the fans WARNING AVOID INJURY! The fan blades are exposed both inside and outside the chassis. Disconnect the power cable before working around the fan. Use extreme caution in working with the oscilloscope. Failure to observe these precautions may result in injury. Use this procedure to remove and replace the fans. When necessary, refer to other removal procedures.
Chapter 5: Replacing Assemblies To remove and replace the power cord To remove and replace the power cord Use this procedure to remove and replace the power cord. When necessary, refer to other removal procedures. The graphics in this chapter are representative of the oscilloscope at the time of this printing. Your unit may look different. 1 Disconnect the power cable and remove the cover and top plate.
Chapter 5: Replacing Assemblies To remove and replace the USB or GPIB port To remove and replace the USB or GPIB port Use this procedure to remove and replace the USB or GPIB port (GPIB is an option and may not be on your oscilloscope). The procedure is exactly the same for both of these ports so only one will be shown here. When necessary, refer to other removal procedures. The graphics in this chapter are representative of the oscilloscope at the time of this printing. Your unit may look different.
Chapter 5: Replacing Assemblies To remove and replace the USB or GPIB port 126
6 Ordering Replaceable Parts 128 Listed Parts 128 Unlisted Parts 128 Direct Mail Order System 128 Exchange Assemblies 128 Exploded Views 129 Replaceable Parts List 133 Replaceable Parts
Replaceable Parts This chapter describes how to order replaceable assemblies and parts for the Agilent 90000 A-Series oscilloscopes. Service support for this oscilloscope is replacement of parts to the assembly level. Ordering Replaceable Parts 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.
Chapter 6: Replaceable Parts Exploded Views Exploded Views Front Frame and Front Panel 129
Chapter 6: Replaceable Parts Exploded Views Fan and Acquisition Assembly 130
Chapter 6: Replaceable Parts Exploded Views Power Supply and PC Motherboard 131
Chapter 6: Replaceable Parts Exploded Views Sleeve and Accessory Pouch 132
Chapter 6: Replaceable Parts Replaceable Parts List Replaceable Parts List The following table is a list of replaceable parts. Information given for each part includes: • Reference designation • Agilent Technologies part number • Total quantity (QTY) in oscilloscope or on assembly • Description of the part. Replaceable Parts Ref. Des.
Chapter 6: Replaceable Parts Replaceable Parts List Replaceable Parts Ref. Des.
Chapter 6: Replaceable Parts Replaceable Parts List Replaceable Parts Ref. Des.
Chapter 6: Replaceable Parts Replaceable Parts List 136
7 Block-Level Theory 139 Power Supply Assembly 141 Monitor Assembly 141 Acquisition System 141 Front Panel 142 Motherboard 144 On/Off Board 144 Theory of Operation
Chapter 7: Theory of Operation Figure 7-1 Oscilloscope Block Diagram 138
Theory of Operation This Service Guide supports troubleshooting the Agilent Technologies oscilloscopes to assembly level. Theory of operation is included only as supplemental information. It is not comprehensive enough for component-level troubleshooting. Block-Level Theory The front panel provides: • Dedicated knobs and pushbuttons for major oscilloscope functions. • An 12.1 inch (diagonal) color flat panel display for waveform, measurement, and graphical interface display. • Three front panel USB 2.
Chapter 7: Theory of Operation Block-Level Theory Figure 7-2 Backplane Board Acquisition Boards 140
Chapter 7: Theory of Operation Block-Level Theory Power Supply Assembly The AC input to the power supply is 100–240 VAC ±10%. Maximum input power is 800 W. The AC input frequency is 47 to 63 Hz. Filtered voltages of +3.3 V, +2.5 V, +1.8 V, +1.2 V, -6 V, -5.2 V, -5 V, and –2.3 V are supplied and distributed throughout the oscilloscope. Monitor Assembly The Flat Panel Display (FPD) monitor is a thin film liquid-crystal display (TFT-LCD). This FPD is an 12.1 inch diagonal, 1024 by 768 pixel XGA color monitor.
Chapter 7: Theory of Operation Block-Level Theory Figure 7-3 Backplane assembly block diagram Front Panel The front panel board combines functions from the main keyboard and the Autoprobe interface board in a single PCA. Refer to the keyboard block diagram in Figure 7-4. The keyboard links to the scope PC motherboard through a high-speed USB 2.0 interface.
Chapter 7: Theory of Operation Block-Level Theory Figure 7-4 Keyboard block diagram Disk Drive The hard disk drive is a high-capacity, shock-resistant unit. It is used to store the oscilloscope’s operating system and certain system configuration data. The drive can also be used to store and recall oscilloscope setups and waveforms.
Chapter 7: Theory of Operation Block-Level Theory Motherboard The motherboard provides all system control and interface functions for the oscilloscope. It contains a CPU, ROM, and RAM; keyboard and mouse interfaces, serial and parallel interfaces, CDROM, hard disk drive interface, PCI buses, etc. Display Board The Display Board controls the flat-panel display monitor.
Chapter 7: Theory of Operation Block-Level Theory Figure 7-5 Config PROM Hedwig Memory Controller Hedwig Memory Controller ... JTAG Conn JTAG Conn Acq FPGA Acq board PCIe Cables SATA Conn Philips PX 1011A Main FPGA Hedwig Memory Controller Trigger FPGA Hedwig Memory Controller ...
Figure 7-6 Acquisition board block diagram 146
Safety Notices This apparatus has been designed and tested in accordance with IEC Publication EN 61010-1:2001, 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). Before applying power, verify that the correct safety precautions are taken (see the following warnings). In addition, note the external markings on the instrument that are described under "Safety Symbols.
Notices © Agilent Technologies, Inc. 2007-2013 No part of this manual may be reproduced in any form or by any means (including electronic storage and retrieval or translation into a foreign language) without prior agreement and written consent from Agilent Technologies, Inc. as governed by United States and international copyright laws.
