HP 16500B Service Manual
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HP 16500B Service Manual

HP 16500B Service Manual

Logic analysis system
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Service Guide
Publication number 16500-97011
First edition, August 1994
For Safety information, Warranties, and Regulatory
information, see the pages at the end of the book.
© Copyright Hewlett-Packard Company 1987 – 1994
All Rights Reserved.
HP 16500B/16501A
Logic Analysis System

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  • Page 1 Service Guide Publication number 16500-97011 First edition, August 1994 For Safety information, Warranties, and Regulatory information, see the pages at the end of the book. © Copyright Hewlett-Packard Company 1987 – 1994 All Rights Reserved. HP 16500B/16501A Logic Analysis System...
  • Page 2 HP 16500B/16501A Logic Analysis System The HP 16500B is the mainframe of the Logic Analysis System, and the HP 16501A is the expansion frame. The HP 16500B/16501A is of modular structure using plug-in cards with a wide range of data acquisition and stimulus capabilities.
  • Page 3 The HP 16500B Logic Analysis System...
  • Page 4 In This Book This book is the service guide for the HP 16500B/16501A Logic Analysis System and is divided into eight chapters. Chapter 1 contains information about the instrument and includes accessories for the instrument, specifications and characteristics of the instrument, and a list of the equipment required for servicing the instrument.

  • Page 5: Table Of Contents

    To clean the logic analysis system 2–5 To test the logic analysis system 2–5 To install modules 2–6 To install the HP 16500L interface module 2–7 To connect the HP 16501A Expansion Frame 2–9 To connect an external monitor 2–10 3 Testing Performance To perform the power-up tests 3–3...
  • Page 6 To return assemblies 6–22 7 Replaceable Parts Replaceable Parts Ordering 7–2 Replaceable Parts List Description 7–3 HP 16500B Exploded View and Replaceable Parts 7–4 HP 16501A Exploded View and Replaceable Parts 7–9 8 Theory of Operation Block-Level Theory 8–3 The HP 16500B Logic Analysis System 8–3 The Microprocessor Board 8–6...

  • Page 7: General Information

    Accessories 1–2 Specifications 1–3 Characteristics 1–3 Recommended Test Equipment 1–6 General Information...

  • Page 8: Accessories

    Feeling Comfortable with Digitizing Oscilloscopes Filler Panels Quantity depends on how many modules are ordered with the HP 16500B/16501A Accessories Available Other accessories available for the HP 16500B/16501A Logic Analysis System are listed in the Accessories for HP Logic Analyzers brochure. 1–2...

  • Page 9: Specifications

    RS-232C Configurations Protocols: XON/XOFF, Hardware; Data bits: 8; Stop bits: 1, 1 1/2, 2; Parity: none, odd, or even; Baud rates: 110, 300, 600, 1200, 2400, 4800, 9600, 19200. HP-IB Interface Functions SH1, AH1, T5, TE0, L3, LE0, SR1, RL1, PP1, DC1, DT1, C0 and E2.
  • Page 10 Shipping 19.9 kg (44 lbs) + [3.6 kg (8 lbs) x number of optional cards installed]. Power Requirements HP 16500B 115 V/230 V, -22% to +10%, 48 to 66 Hz, 475 W max. HP 16501A 115 V/230 V, -22% to +10%, 48 to 66 Hz, 420 W max.
  • Page 11 General Information Characteristics Dimensions Refer to the following figure for dimensional detail. Dimensional Detail 1–5...

  • Page 12: Recommended Test Equipment

    Recommended Test Equipment Recommended Test Equipment Equipment Required Equipment Critical Specifications Recommended Model/Part Oscilloscope 100 MHz Bandwidth HP 54600A Voltmeter HP 3478A RS-232C Loopback HP Part Number Connector 01650-63202 *A = Adjustment P = Performance Tests T = Troubleshooting 1–6...

  • Page 13: Preparing For Use

    To clean the logic analysis system 2–5 To test the logic analysis system 2–5 To install modules 2–6 To install the HP 16500L interface module 2–7 To connect the HP 16501A Expansion Frame 2–9 To connect an external monitor 2–10...

  • Page 14: To Inspect The Logic Analysis System

    Preparing For Use This chapter gives you instructions for preparing the logic analysis system for use. Power Requirements The logic analysis system mainframe requires a power source of either 115 Vac or 230 Vac, –22 % to +10 %, single phase, 48 to 66 Hz, 475 W maximum power. The logic analysis system expansion frame requires a power source of either 115 Vac or 230 Vac, –22 % to +10 %, single phase, 48 to 66 Hz, 420 W maximum power.

  • Page 15: To Apply Power

    For more information about the logic analysis system interface, refer to the HP 16500B/16501A Logic Analysis System User’s Reference. • To set the HP-IB address or to configure for RS-232C, refer to the HP 16500B/16501A Logic Analysis System User’s Reference. 2–3...

  • Page 16: To Set The Line Voltage

    To set the line voltage To set the line voltage When shipped from HP, the line voltage selector is set and an appropriate fuse is installed for operating the instrument in the country of destination. To operate the instrument from a power source other than the one set, perform the following steps.

  • Page 17: To Degauss The Display

    Preparing for Use To degauss the display To degauss the display • If the mainframe has been subjected to strong magnetic fields, the CRT might become magnetized and display data might become distorted. To correct this condition, degauss the CRT with a conventional, external-television-type degaussing coil.

  • Page 18: To Install Modules

    Preparing for Use To install modules To install modules The following steps give general instructions for installing modules into the mainframe or the expansion frame of the system. Electrostatic discharge can damage electronic components. Use grounded wriststraps and C A U T I O N mats when performing any service to modules.

  • Page 19: To Install The Hp 16500L Interface Module

    Electrostatic discharge can damage electronic components. Use grounded wriststraps and C A U T I O N mats when performing any service to this module or to the HP 16500B Logic Analysis System. For correct orientation of the cables, match the slots on the cable connectors and on the board connectors.
  • Page 20 Preparing for Use To install the HP 16500L interface module Slide the interface module into the mainframe through the slot in the rear panel. Install the screws connecting the interface module to the mainframe. Two screws through the top of the interface module connect it to the sheetmetal plate, and four screws through the rear plate of the interface module connect it to the rear panel of the mainframe.

  • Page 21: To Connect The Hp 16501A Expansion Frame

    The HP 16501A Expansion Frame includes an interface cable and requires an HP 16500L interface module to connect to the HP 16500B mainframe. To install the expansion frame, you need to install the interface module into the mainframe, then connect the cable from the module to the expansion frame.

  • Page 22: To Connect An External Monitor

    Preparing for Use To connect an external monitor To connect an external monitor The following tables define the signal available for external monitors at the HP 16500L connector and pin numbers. HP 16500L Output Signal For External Monitors Horizontal deflection (fh) 25.0 kHz...

  • Page 23: Testing Performance

    To perform the power-up tests 3–3 To perform the self-tests 3–4 Testing Performance...
  • Page 24 Refer to the Service Guides of the individual modules for more information. The Logic Analysis System Interface To select a field on the HP 16500B screen, use the touchscreen. For more information about the logic analysis system interface, refer to the HP 16500B/16501A Logic Analysis System User’s Reference.

  • Page 25: To Perform The Power-Up Tests

    Testing Performance To perform the power-up tests To perform the power-up tests The logic analysis system automatically performs power-up tests when you apply power to the instrument. The revision number of the boot ROM shows in the upper-right corner of the screen during these power-up tests.

  • Page 26: To Perform The Self-Tests

    Testing Performance To perform the self-tests To perform the self-tests The self-tests verify the correct operation of the logic analysis system. Self-tests can be performed all at once or one at a time. While testing the performance of the logic analysis system, run the self-tests all at once.
  • Page 27 Testing Performance To perform the self-tests Install a formatted disk that is not write protected into the flexible disk drive. Connect an RS-232C loopback connector onto the RS-232C port. Select All System Tests. You can run all tests at one time by running All System Tests. To see more details about each test, you can run each test individually.
  • Page 28 3–6...

  • Page 29: Calibrating And Adjusting

    To prepare the instrument 4–3 To access the test patterns 4–4 To adjust geometry 4–5 To adjust focus, landing, and convergence 4–6 To adjust white balance 4–13 Calibrating and Adjusting...
  • Page 30 Calibrating and Adjusting This chapter normally gives you instructions for calibrating and adjusting the logic analysis system. Because the HP 16500B/16501A requires no calibration, only adjustment instructions are included. Adjustments The only adjustments to the logic analysis system are adjustments to the color CRT monitor assembly.

  • Page 31: To Prepare The Instrument

    Calibrating and Adjusting To prepare the instrument To prepare the instrument Remove the rear feet and the covers from the mainframe. Before starting the adjustments, mark the position where the potentiometers are set. This helps in returning the adjustments to their original positions if it becomes necessary to restart the procedure.

  • Page 32: To Access The Test Patterns

    Calibrating and Adjusting To access the test patterns To access the test patterns Some procedures on the following pages ask you to access test patterns. This procedure tells you how to access them and how to exit the test. In the System Configuration menu, touch Configuration, then select Test in the pop-up menu.

  • Page 33: To Adjust Geometry

    Calibrating and Adjusting To adjust geometry To adjust geometry Display the white cross-hatch test pattern on the CRT. From the Color Display Test menu, select the white, cross-hatch pattern. Preset the front panel brightness control, the top of the two controls to the left of the display, maximum clockwise.

  • Page 34: To Adjust Focus, Landing, And Convergence

    Calibrating and Adjusting To adjust focus, landing, and convergence To adjust focus, landing, and convergence Once you have started, you will have to do all three of the procedures in this group: the focus, the landing, and the convergence adjustments. Initial Preparation Loosen the deflection yoke clamp screw.
  • Page 35 Calibrating and Adjusting To adjust focus, landing, and convergence Landing Adjustment Turn the front panel BRIGHTNESS control fully clockwise. Degauss the CRT by momentarily pressing the DEGAUSS switch located on the instrument rear panel. In some cases, the user’s environment or shipping environment may have caused high levels of magnetization in the CRT.
  • Page 36 Calibrating and Adjusting To adjust focus, landing, and convergence Move the deflection yoke forward until the entire raster is green. Landing adjustment is easier if the yoke is moved all the way forward and then moved back until the raster is completely green. Using the Color Purity key, replace the green raster with red and then blue raster, each time checking for proper landing adjustment (color purity of each).
  • Page 37 Calibrating and Adjusting To adjust focus, landing, and convergence Static Convergence Temporarily disconnect the power from the instrument. Remove the PC board shield cover from the rear of the Color CRT Module by prying evenly on all four sides. Reapply power. Display the white, cross-hatch test pattern on the CRT.
  • Page 38 Calibrating and Adjusting To adjust focus, landing, and convergence Dynamic Convergence Display the white, cross-hatch test pattern on the CRT. From the Color Display Test menu, select the white, cross-hatch test pattern. Adjust Y BOW (RV805) located on the bottom PC board to eliminate red, green, and blue bowing at the top and bottom of the center vertical line.
  • Page 39 Calibrating and Adjusting To adjust focus, landing, and convergence Adjust V TOP (RV801) and V BOTTOM (RV802) to obtain coincidence of the red, blue, and green at the intersection of the top and bottom horizontal lines with the center vertical line. The VTOP and VBOTTOM adjustments are located on the bottom PC board.
  • Page 40 Calibrating and Adjusting To adjust focus, landing, and convergence Adjust H.AMP (RV807) located on the bottom PC board for equal amounts of misconvergence at the right and left sides of the screen. Adjust H.TILT (RV806) located on the bottom PC board for coincidence of red, green, and blue at the right and left sides of the screen.

  • Page 41: To Adjust White Balance

    Calibrating and Adjusting To adjust white balance To adjust white balance Provide a blank display on the CRT. From the Color Display Test menu, select a blank (colorless) raster. Preset the front panel brightness and contrast controls to their mechanical centers. On the bottom PC board, set the following adjustments to their mechanical centers.
  • Page 42 4–14...

  • Page 43: Troubleshooting

    To use the flowcharts 5–2 To check the power-up self-tests 5–18 To run the self-tests 5–19 To check the video signals 5–22 To check the power supply LEDs 5–23 To test the power supply voltages 5–24 To test the flexible disk drive voltages 5–25 To test the hard disk drive voltages 5–27 To test the expansion frame interface 5–29 Troubleshooting...

  • Page 44: To Use The Flowcharts

    Troubleshooting This chapter helps you troubleshoot the logic analysis system to find defective assemblies. The troubleshooting consists of flowcharts, self-test instructions, and tests. This information is not intended for component-level repair. If you suspect a problem, start at the top of the first flowchart. During the troubleshooting instructions, the flowcharts will direct you to perform other tests.
  • Page 45 Troubleshooting To use the flowcharts Main Troubleshooting Flowchart 1 5–3...
  • Page 46 Troubleshooting To use the flowcharts Note: The HP 16500L is in the System Configuration menu if "Master Frame" is in a blue field and "Ethernet" is in the Communications field. Main Troubleshooting Flowchart 2 5–4...
  • Page 47 Troubleshooting To use the flowcharts Color Module Troubleshooting Flowchart 3 5–5...
  • Page 48 Troubleshooting To use the flowcharts Color Module Troubleshooting Flowchart 3A (continued) 5–6...
  • Page 49 Troubleshooting To use the flowcharts Power-Up Troubleshooting Flowchart 4 5–7...
  • Page 50 Troubleshooting To use the flowcharts System Start Troubleshooting Flowchart 5 5–8...
  • Page 51 Troubleshooting To use the flowcharts Mainframe Tests Troubleshooting Flowchart 6 5–9...
  • Page 52 Troubleshooting To use the flowcharts Power Supply Troubleshooting Flowchart 7 5–10...
  • Page 53 Troubleshooting To use the flowcharts HIL Troubleshooting Flowchart 8 5–11...
  • Page 54 Troubleshooting To use the flowcharts Flexible Disk Drive Troubleshooting Flowchart 9 5–12...
  • Page 55 Troubleshooting To use the flowcharts Hard Disk Drive Troubleshooting Flowchart 10 5–13...
  • Page 56 Troubleshooting To use the flowcharts RS-232C Troubleshooting Flowchart 11 5–14...
  • Page 57 Troubleshooting To use the flowcharts Intermodule Troubleshooting Flowchart 12 5–15...
  • Page 58 Troubleshooting To use the flowcharts Expansion Frame Troubleshooting Flowchart 13 5–16...
  • Page 59 Troubleshooting To use the flowcharts Note: Compare the specifications of the monitor against the specifications of the video signal as a way to determine compatibility (ability to synch). Video signal specifications are listed in "To connect an external monitor" in chapter 2. External Monitor Troubleshooting Flowchart 14 5–17...

  • Page 60: To Check The Power-Up Self-Tests

    Troubleshooting To check the power-up self-tests To check the power-up self-tests The logic analysis system automatically performs power-up self-tests when you apply power to the instrument. The revision number of the operating system shows in the upper-right corner of the screen during these power-up tests. As each test completes, either "passed" or "failed"...

  • Page 61: To Run The Self-Tests

    Troubleshooting To run the self-tests To run the self-tests Self-tests identify the correct operation of major, functional subsystems of the instrument. You can run all self-tests without accessing the interior of the instrument. If a self-test fails, the troubleshooting flowcharts instruct you to change a part of the instrument. If you just did the power-up self-tests, go to step 2.
  • Page 62 Troubleshooting To run the self-tests Select ROM Test. The ROM Test screen is displayed. You can run all tests at one time by running All System Tests. To see more details about each test, you can run each test individually. This example shows how to run an individual test. Select Run, then select Single.
  • Page 63 The Color Display Test is not part of this troubleshooting. The Color Display Test is used in chapter 4, "Calibrating and Adjusting," to adjust the color display. The Option Board Test is used later in this chapter to check signals to the HP 16501A Expansion Frame.

  • Page 64: To Check The Video Signals

    Troubleshooting To check the video signals To check the video signals Refer to chapter 6, "Replacing Assemblies," for instructions on how to remove or replace covers and assemblies. Hazard voltages exist on the power supply, the CRT, and the CRT driver board. This W A R N I N G procedure is to be performed by service-trained personnel aware of the hazards involved, such as fire and electrical shock.

  • Page 65: To Check The Power Supply Leds

    Troubleshooting To check the power supply LEDs To check the power supply LEDs Refer to chapter 6, "Replacing Assemblies," for instructions to remove or replace covers and assemblies. Hazard voltages exist on the power supply, the CRT, and the CRT driver board. This W A R N I N G procedure is to be performed by service-trained personnel aware of the hazards involved, such as fire and electrical shock.

  • Page 66: To Check The Power Supply Voltages

    Troubleshooting To check the power supply voltages To check the power supply voltages Refer to chapter 6, "Replacing Assemblies," for instructions to remove or replace covers and assemblies. Hazard voltages exist on the power supply, the CRT, and the CRT driver board. This W A R N I N G procedure is to be performed by service-trained personnel aware of the hazards involved, such as fire and electrical shock.

  • Page 67: To Test The Flexible Disk Drive Voltages

    Model/Part Digitizing Oscilloscope > 100 MHz Bandwidth HP 54600A Turn off the instrument, then remove the power cable. Remove the instrument cover and the flexible disk drive. Reconnect the disk drive cable to the rear of the disk drive. Turn the disk drive over so that the solder connections of the cable socket are accessible.
  • Page 68 Troubleshooting To test the flexible disk drive voltages Check for the following voltages and signals using an oscilloscope. Disk Drive Voltages Signal Signal Signal Description Description Description Ground Write Gate Disk Change Ground Ground Track 00 High Density Motor On Ground Ground Write Protect...

  • Page 69: To Test The Hard Disk Drive Voltages

    Disconnect the three cables plugged into the HP 16500L by reaching through the top of the mainframe and removing the plugs. b Remove the screws attaching the HP 16500L to the mainframe. Refer to chapter 6 for more complete instructions to remove the HP 16500L.
  • Page 70 Troubleshooting To test the hard disk drive voltages Disk Drive Voltages Signal Description Signal Description Signal Description Reset Data +5 V Ground Data Ground Data Data Interrupt Request Data Data Data Ground Address Data (connector key pin) Data Address Data Ground Address Data...

  • Page 71: To Test The Expansion Frame Interface

    This procedure is used during troubleshooting to isolate a failed interface component, the interface cable, the expansion frame interface card, or the HP 16500L. The Option Board Test in the performance verification software generates bit patterns across the data, address, and strobe lines of the interface.
  • Page 72 Troubleshooting To test the expansion frame interface Test the Expansion Interface Card Ground the oscilloscope probe to the metal portion of the frame near the rear panel of the expansion frame and check for TTL activity on the following pins. •...
  • Page 73 Troubleshooting To test the expansion frame interface Remove the probe ground from the frame, and reattach the probe ground to the metal portion of the expansion frame near the front panel. Probe the following pins. • U1 pins 2 through 9 •...
  • Page 74 To test the expansion frame interface Test the Mainframe CPU Board Remove power from the HP 16500B system and unplug the power cords from both the mainframe and the expansion frame. Reinstall the bottom cover on the expansion frame. Set the mainframe on its side with the strap handle facing up, then remove the bottom cover.

  • Page 75: Replacing Assemblies

    Optional modules or filler panels 6-3 Covers 6–4 Flexible disk drive 6–5 Power supply 6–6 Rear fan 6–8 Side fan 6–9 HP 16500L interface module 6–10 Hard disk drive 6–12 Microprocessor board (CPU) 6–13 SIMM memory module 6–14 Expansion interface board 6–15 Mother board 6–16 Front-Panel board 6–18...
  • Page 76 Replacing Assemblies This chapter contains the instructions for removing and replacing the assemblies of the logic analysis system. Also in this chapter are instructions for returning assemblies. Hazardous voltages exist on the power supply, the CRT, and the CRT driver board. To avoid W A R N I N G electrical shock, disconnect the power from the instrument before performing the following procedures.
  • Page 77 Replacing Assemblies To remove and replace optional modules or filler panels To remove and replace optional modules or filler panels To reconfigure your system later in this procedure, note the configuration of your system. Some modules for the Logic Analysis System require calibration if you move them to a different slot.
  • Page 78 To remove and replace the covers To remove and replace the covers There are four outside covers on the HP 16500B and on the HP 16501A, a top cover, a bottom cover, and two side covers. When removing the covers, note where the shielding braid is located. If the shielding braid separates from the covers, reinstall it when replacing the covers.
  • Page 79 Replacing Assemblies To remove and replace the flexible disk drive To remove and replace the flexible disk drive HP 16500B Using previous procedures, remove the following assemblies: • Top cover Remove the two disk drive mounting screws. Slide the flexible disk drive assembly toward the rear panel until the assembly is out of the instrument.

  • Page 80: Flexible Disk Drive

    However, if the AC LED on the power supply has any illumination, a significant charge remains on the capacitors. HP 16500B Using previous procedures, remove the following assemblies: •...
  • Page 81 Replacing Assemblies To remove and replace the power supply 6–7...

  • Page 82: Rear Fan

    Replacing Assemblies To remove and replace the rear fan To remove and replace the rear fan HP 16500B and HP 16501A Using previous procedures, remove the following assemblies: • Top cover Remove the rear fan shroud mounting screws. Remove the complete rear fan assembly from the rear panel of the instrument.

  • Page 83: Side Fan

    Replacing Assemblies To remove and replace the side fan To remove and replace the side fan HP 16500B and HP 16501A Using previous procedures, remove the following assemblies: • Top cover and side cover Remove the four side fan mounting screws.
  • Page 84 Top cover If your system includes an expansion frame, disconnect the interface cable from the HP 16500L interface module by pressing the release tabs on either side of the cable connector while pulling the connector away from the card. Disconnect the cable from the HP 16500L interface module to the CRT monitor and the two cables from the HP 16500L interface module to the CPU card.
  • Page 85 To remove and replace the HP 16500L interface module If your system includes an expansion frame, connect the interface cable from the expansion frame to the HP 16500L interface module located in the HP 16500B mainframe. In order to ensure correct connection of the interface cable, the 68-pin "D" connectors on the cable are asymmetric in shape.

  • Page 86: Hp 16500L Interface Module

    • Top and bottom covers • HP 16500L interface module Reaching in from the top of the instrument, remove the four screws connecting the hard disk drive to the bracket. Reaching in from the bottom of the instrument, remove the hard disk drive.
  • Page 87 Replacing Assemblies To remove and replace the microprocessor board (CPU) To remove and replace the microprocessor board (CPU) HP 16500B Using previous procedures, remove the following assemblies: • Top cover and left, rear foot • All optional modules and filler panels Disconnect the cables from the microprocessor board.

  • Page 88: Microprocessor Board (Cpu)

    Replacing Assemblies To remove and replace a SIMM memory To remove and replace a SIMM memory HP 16500B Using previous procedures, remove the following assemblies: • Microprocessor (CPU) board Hold the release tabs away from the SIMM (single inline memory module), then pull the module out.
  • Page 89 Replacing Assemblies To remove and replace the expansion interface board To remove and replace the expansion interface board HP 16501A Using previous procedures, remove the following assemblies: • Bottom cover • All optional modules and filler panels Disconnect the interface cable by pressing the release tabs on either side of the cable connector while pulling the cable connector away from the board.

  • Page 90: Power Supply

    Replacing Assemblies To remove and replace the mother board To remove and replace the mother board HP 16500B Using previous procedures, remove the following assemblies: • Top and bottom covers • Power supply • Microprocessor board • All optional modules and filler panels Set the frame so that the bottom of the frame is facing up.
  • Page 91 Replacing Assemblies To remove and replace the mother board 6–17...

  • Page 92: Mother Board

    Replacing Assemblies To remove and replace the front-panel board To remove and replace the front-panel board HP 16500B Remove the top trim from the front frame. Disconnect the two cables from the front-panel board. One cable is connected to the color display assembly and one cable is connected to the mother board.

  • Page 93: Color Display Assembly

    Disconnect the color display to power supply cable from the power supply. If an HP 16500L is installed, disconnect the cable from the color display to the HP 16500L. Remove the screws that connect the rear mounting bracket on the display assembly to the side of the mainframe.
  • Page 94 Replacing Assemblies To remove and replace the color display assembly Transferring parts to the replacement assembly The purpose of this procedure is to transfer the mechanical parts from the old assembly to the replacement assembly. Remove the rear mounting bracket from the rear support bracket. Remove the rear support bracket from the color display assembly.
  • Page 95 Tighten all of the display assembly mounting hardware. Reconnect the flat color display to microprocessor cable to the microprocessor board. If an HP 16500L is installed, connect the cable from the color display assembly to the HP 16500L. Reinstall all covers.

  • Page 96: To Return Assemblies

    Only return accessories to Hewlett-Packard if they are associated with the failure symptoms. Package the logic analysis system or assemblies. You can use either the original shipping containers, or order materials from an HP sales office. For protection against electrostatic discharge, package the logic analyzer in electrostatic C A U T I O N material.

  • Page 97: Replaceable Parts

    Replaceable Parts Ordering 7–2 Replaceable Parts List 7–3 HP 16500B Exploded View and Replaceable Parts 7–4 HP 16501A Exploded View and Replaceable Parts 7–9 Replaceable Parts...

  • Page 98: Replaceable Parts Ordering

    Within the USA, Hewlett-Packard can supply parts through a direct mail order system. The advantages to the system are direct ordering and shipment from the HP Part Center in Mountain View, California. There is no maximum or minimum on any mail order. (There is a minimum amount for parts ordered through a local Hewlett-Packard Sales Office when the orders require billing and invoicing.) Transportation costs are prepaid (there is a small...

  • Page 99: Replaceable Parts List Description

    Replaceable Parts Replaceable Parts List Description Replaceable Parts List Description The replaceable parts list is organized by reference designation. The exploded view does not show all of the parts in the replaceable parts list. Information included for each part on the list consists of the following: •...

  • Page 100: Hp 16500B Exploded View And Replaceable Parts

    Replaceable Parts HP 16500B Exploded View and Replaceable Parts HP 16500B Exploded View and Replaceable Parts Exploded view of the HP 16500B External Parts 7–4...
  • Page 101 Replaceable Parts HP 16500B Exploded View and Replaceable Parts HP 16500B Replaceable Parts Ref. HP Part Des. Number Description Exchange Assemblies 16500-69512 Front-panel circuit board (exchange) 16500-69509 Microprocessor board assembly (exchange) D2329-69001 Hard disk drive (exchange) 16500-69500 Power supply (exchange)
  • Page 102 Replaceable Parts HP 16500B Exploded View and Replaceable Parts Exploded View of the HP 16500B 7–6...
  • Page 103 Replaceable Parts HP 16500B Exploded View and Replaceable Parts HP 16500B Replaceable Parts Ref. HP Part Des. Number Description Internal Parts 16500-66501 Mother board assembly 16500-66509 Microprocessor board assembly 0950-2169 Flexible disk drive D2329-60003 Hard disk drive 0950-1853 Power supply assembly...
  • Page 104 Front panel label MP41 16500-47401 CRT control knob MP42 5041-4944 Keycap MP43 16500-44701 Switch spacer (power switch) Miscellaneous 16500-40502 Filler panel 01650-63202 RS-232C loopback connector HP 16500L Replaceable Parts Refer to the HP 16500L Administrator’s and Service Guide . 7–8...

  • Page 105: Hp 16501A Exploded View And Replaceable Parts

    Replaceable Parts HP 16501A Exploded View and Replaceable Parts HP 16501A Exploded View and Replaceable Parts Exploded view of the HP 16501A 7–9...
  • Page 106 Replaceable Parts HP 16501A Exploded View and Replaceable Parts HP 16501A Replaceable Parts Ref. HP Part Des. Number Description Exchange Assemblies 16500-69500 Power supply assembly (exchange) External Parts 2110-0010 2110-0395 16501-00201 Front-panel 16501-00203 Rear panel 0363-0125 FRI strip-fingers (top and bottom covers)
  • Page 107 Replaceable Parts HP 16501A Exploded View and Replaceable Parts HP 16501A Replaceable Parts Ref. HP Part Des. Number Description Internal Parts 0515-0372 Screw M3 X 0.5 8MM-LG 0515-0433 Screw M4 X 0.8 15MM-LG 0515-0435 Screw M4 X 0.7 14MM-LG 0515-0664 Screw M3 X 0.5 12MM-LG...
  • Page 108 7–12...

  • Page 109: Theory Of Operation

    Block-Level Theory 8–3 The HP 16500B Logic Analysis System 8–3 The Microprocessor Board 8–6 The Power-Up Routine 8–9 The Power-Up Screen 8–9 Power-Up Self-Tests 8–10 Power-Up Tasks 8–10 The System Configuration Menu 8–12 Self-Tests Description 8–13 Power-Up Self Tests 8–13 Functional Performance Verification Tests 8–15...
  • Page 110 Theory of Operation This chapter tells the theory of operation for the logic analysis system and describes the self-tests. The information in this chapter is to help you understand how the logic analysis system operates and what the self-tests are testing. This information is not intended for component-level repair.

  • Page 111: Block-Level Theory

    Block-Level Theory The block-level theory is divided into two parts: theory for the logic analysis system and theory for the microprocessor board. A block diagram is shown with each theory. The HP 16500B Logic Analysis System The Logic Analysis System 8–3...
  • Page 112 Interface Link (HP-HIL) and consists of the touchscreen system, the front-panel control knob, the optional mouse, and the optional keyboard. All of the touchscreen and knob circuitry of the HP-HIL is located on the front-panel board and the controller for the link is located on the microprocessor board.
  • Page 113 The HP 16501A power supply is identical to the HP 16500B power supply. When power is applied to the HP 16500B, a relay allows the power supply in the HP 16501A to turn on. An LED on the front-panel indicates that the expansion frame has turned on.

  • Page 114: The Microprocessor Board

    Theory of Operation The Microprocessor Board The Microprocessor Board The Microprocessor Board 8–6...
  • Page 115 Using line drivers, the Ethernet LAN Interface links the microprocessor address and data bus with the LAN controller IC on the HP 16500L Interface Module. Consult the HP 16500L Administrator’s and Service Guide for more information regarding the HP 16500L Interface Module.
  • Page 116 RS-232C communication lines. Display RAM, Color Palette, and CRT Control The HP 16500B CRT display is driven by a Color Palette and CRT Control supported by 256 KBytes of video RAM. A single RAMDAC functions as the Color Palette for the eight-plane color monitor.

  • Page 117: The Power-Up Routine

    The Power-Up Routine When power is applied to the HP 16500B Logic Analysis System mainframe, a series of tasks called the power-up routine is performed to initialize and to verify operation of the mainframe. The mainframe monitor reports the progress and status of the power-up routine.

  • Page 118: Power-Up Self-Tests

    Power-Up Self-Tests Power-Up Self-Tests All of the power-up self tests are performed to verify the operation of the HP 16500B mainframe. If any of the self-tests fail, then the power-up routine is halted and the FATAL ERRORS ENCOUNTERED, BOOT HALTED message appears.
  • Page 119 The configuration file autoload flag was detected on the disk and configuration files are being loaded into the modules. The autoload flag was set during a previous session with the HP 16500B Logic Analysis System. Usually a configuration is autoloaded as a shortcut if the module configuration file is used repeatedly.

  • Page 120: The System Configuration Menu

    HP 16500B mainframe does not recognize an expansion frame. Ethernet If an HP 16500L interface module is installed, the HP 16500B can be configured to work with an Ethernet network. Network statistics can be viewed by touching the field configuration labeled Ethernet in the Communications menu of the System Configuration menu, then touching Ethernet Statistics.

  • Page 121: Self-Tests Description

    Power-Up Self-Tests The HP 16500B power-up tests check the mainframe circuitry only. None of the option modules are tested at power-up. The tests run every time power is applied to the instrument and the results of the tests are reported on the screen.

  • Page 122: Power-Up Self Tests

    Theory of Operation Power-Up Self-Tests RAM Test The RAM Test performs an abbreviated read/write test at various memory locations. The test returns a pass or fail message. For RAM Test failures, first you can suspect a faulty SIMM module, then you can suspect a faulty microprocessor board. Interrupt Test The Interrupt Test checks the microprocessor interrupts (interrupts 1 thorough 7).

  • Page 123: Functional Performance Verification Tests

    Theory of Operation Functional Performance Verification Tests Correlator Test The correlator test verifies that the intermodule bus time correlator on the microprocessor board is functioning properly. If the correlator is functioning, then intermodule measurements can be time-correlated to within 2 ns. This test reports either a pass or fail message.
  • Page 124 HP-IB Test The HP-IB Test checks the basic interface functions of the HP-IB port. Only the internal portions of the port circuitry is tested. For HP-IB Test failures, you can suspect a faulty microprocessor board. RS-232C Test This test checks the basic interface functions of the RS-232C port.
  • Page 125 The Option Board Test is used during troubleshooting to check the data and control signals through the HP 16501A expansion frame components. This test also verifies the functionality of the HP 16500L LAN interface module. Refer to the manuals for the HP 16500L for more information about the LAN interface tests.

  • Page 126: Hp-Ib

    Instrumentation." HP-IB is a carefully defined interface that simplifies the integration of various instruments and computers into systems. The interface makes it possible to transfer messages between two or more HP-IB compatible devices. HP-IB is a parallel bus of 16 active signal lines divided into three functional groups according to function.
  • Page 127 RS-232C The logic analysis system interfaces with RS-232C communication lines through a standard 25 pin D connector. The logic analysis system is compatible with RS-232C protocol. When a hardwire handshake method is used, the Data Terminal Ready (DTR) line, pin 20 on the connector, is used to signal if space is available for more data in the logical I/O buffer.
  • Page 128 8–20...
  • Page 129 Manufacturer’s Address: Colorado Springs , CO 80901 U.S.A. declares, that the product Product Name: Logic Analyzer Model Number(s): HP 16500B/16501A/16500L Product Options: conforms to the following product specifications: Safety: IEC 348 / HD 401 UL 1244 CSA-C22.2 No. 231 (Series-M89)
  • Page 131 © Copyright Hewlett- Warning Safety Symbols • Packard Company 1987-1994 Before turning on the All Rights Reserved. instrument, you must connect the protective earth terminal of the Instruction manual symbol: the instrument to the protective Reproduction, adaptation, or product is marked with this symbol conductor of the (mains) power when it is necessary for you to translation without prior written...
  • Page 132 The remedies provided herein are This is the first edition of the a warranty against defects in the buyer’s sole and exclusive HP 16500B/16501A Logic material and workmanship for a remedies. Hewlett-Packard shall Analysis Service Guide. period of one year from date of not be liable for any direct, shipment.

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