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HP 16500A Service Manual

Logic analysis system.
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We've added this manual to the Agilent website in an effort to help you support
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or contain dated information. If we find a more recent copy in the future, we will
add it to the Agilent website.
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This manual may contain references to HP or Hewlett-Packard. Please note that
Hewlett-Packard's former test and measurement, semiconductor products and
chemical analysis businesses are now part of Agilent Technologies. We have
made no changes to this manual copy. In other documentation, to reduce
potential confusion, the only change to product numbers and names has been in
the company name prefix: where a product number/name was HP XXXX the
current name/number is now Agilent XXXX. For example, model number
HP8648A is now model number Agilent 8648A.

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  • Page 1

    Agilent Test & Measurement website, www.tm.agilent.com. HP References in this Manual This manual may contain references to HP or Hewlett-Packard. Please note that Hewlett-Packard's former test and measurement, semiconductor products and chemical analysis businesses are now part of Agilent Technologies. We have made no changes to this manual copy.

  • Page 2: Service Manual

    Logic Analysis System SERIAL NUMBERS This manual applies directly to instruments prefixed with serial number: HP 16500A - 3048A and below HP 16501A - 3050A For additional information about serial numbers see INSTRUMENTS COVERED BY THIS MANUAL in Section 1.

  • Page 3: Table Of Contents

    2-15. Operating Environment ....................... 2-12 2-16. Storage and Shipment ......................2-12 2-17. Packaging ........................... 2-12 2-18. Tagging for Service ......................2-12 2-19. Cleaning Requirements ...................... 2-12 2-20. HP 16501A Expansion Frame Installation ................2-13 Section III Performance Tests Page 3-1. Introduction ......................... 3-1...

  • Page 4: Table Of Contents

    HP 16500A/16501A - Contents Section IV Adjustments Page 4-1. Introduction ......................... 4-1 4-2. Degaussing the Display ...................... 4-1 4-3. Safety Considerations ......................4-1 4-4. Adjustment Test Patterns ....................4-2 4-5. Color Display Module Adjustments ..................4-7 Section V Replaceable Parts Page 5-1.

  • Page 5: Table Of Contents

    1-1. Dimensional Detail ......................1-6 2-1. Line Voltage Selection ......................2-2 2-2. Power Cord Configurations ....................2-3 2-3. HP 16500A User Interface Devices ..................2-4 2-4. HP-IB Interface Connector ....................2-5 2-5. System Configuration Menu ....................2-6 2-6. HP-IB Configuration Menu ....................2-6 2-7.

  • Page 6: Table Of Contents

    4-22. V.STAT BOTTOM Adjustment .................... 4-18 4-23. H.AMP Adjustment ......................4-19 4-24. H.TILT Adjustment ......................4-19 5-1. HP 16500A Assembly Parts ....................5-4 5-2. HP 16500A Chassis Parts ....................5-6 5-3. HP 16501A Assembly Parts ....................5-10 5-4. HP 16501A Chassis Parts ....................5-12 6-1.

  • Page 7: Table Of Contents

    6-31. Horizontal and Vertical Sync Signals .................. 6-35 6-32. Power Supply Check ......................6-37 6-33. Power Supply Pins ......................6-39 6-34. HP 1651B Format Menu ..................... 6-41 6-35. Probe Tip Connections ....................... 6-41 6-36. Expander Test Screen ......................6-42 6-37. HP 1651B Test Screen ....................... 6-43 6-38.

  • Page 8: Table Of Contents

    TABLE OF CONTENTS Section I General Information Page 1-1. Introduction........................1-1 1-2. Instruments Covered by This Manual................1-1 1-3. Safety Considerations .....................1-2 1-4. Product Description ......................1-2 1-5. Accessories Supplied ......................1-2 1-6. Accessories Available .....................1-3 1-7. Operating Characteristics ....................1-3 1-8. Recommended Test Equipment..................1-3...

  • Page 9: Introduction, Instruments Covered By This Manual

    Prefix changes are The General Information Section includes a for parts compatibility and for instrument tracking. description of the HP 16500A/16501A, its The only time the manual will be updated to reflect specifications, options, available accessories, and a new prefix is for parts compatibility.

  • Page 10: Safety Considerations, Product Description, Accessories Supplied

    1-4. Product Description One Feeling Comfortable With Logic Analyzers guide. The HP 16500A is the mainframe of the HP Logic Analysis System. The HP 16501A is an One Feeling Comfortable With Digitizing expansion frame of the HP Logic Analysis System.

  • Page 11: Accessories Available, Operating Characteristics, Recommended Test Equipment

    HP-IB Cables: HP 10833A, 10833B, The equipment required to test and maintain the 10833C, 10833D. HP 16500A/16501A is listed in table 1-2. Hewlett-Packard Printers (see table 1-1). Other equipment may be substituted if it meets or exceeds the critical specifications listed in the Extra Operating and Programming Manual table.

  • Page 12: Operating Characteristics

    RS-232C or HP-IB (IEEE-488). Hardcopy Output Printers Supported: HP ThinkJet, HP QuietJet, HP LaserJet, HP PaintJet, HP Deskjet, Epson and Epson-compatible (e. g. Epson FX-80) via RS-232C or HP-IB. RS-232C Configurations: Protocols: XON/XOFF, Hardware; Data bits: 8; Stop bits: 1, 1 1/2, 2; Par- ity: none, odd, or even;...

  • Page 13

    HP 16500A/16501A - General Information Table 1-1. HP 16500A/16501A Operating Characteristics (Continued) Operating Environment Temperature: Instrument: 0 C to 55 C (+32 F to 131 F). Disk Media: 10 C to 50 C (+50 F to 122 F). Probes and Cables: 0 C to 65 C (+32 F to 149 F).

  • Page 14: Dimensional Detail

    HP 16500A/16501A - General Information Figure 1-1. Dimensional Detail...

  • Page 15: Recommended Test Equipment

    HP 16500A/16501A - General Information Table 1-2. Recommended Test Equipment Instrument Critical Specification Recommended Model Use* State Analyzer 10 MHz Acquisition Speed HP 1651B 22 Channels Oscilloscope 100 MHz Bandwidth HP 54501A RS-232C HP Part No. Loopback 01650-63202 Connector Voltmeter...

  • Page 16

    2-11. HP-IB Interface Functions ....................2-8 2-12. RS-232C Interface......................2-8 2-13. Baud Rate Selection......................2-10 2-14. Degaussing the Display....................2-12 2-15. Operating Environment ....................2-12 2-16. Storage and Shipment.....................2-12 2-17. Packaging........................2-12 2-18. Tagging for Service ......................2-12 2-19. Cleaning Requirements ....................2-12 2-20. HP 16501A Expansion Frame Installation...............2-13...

  • Page 17: Initial Inspection, Introduction, Safety Considerations, Operating Disk Installation, Power Requirements, Line Voltage Selection

    The safety symbols used with Hewlett-Packard instruments are illustrated in the front of this The HP 16500A and the HP 16501A each require manual. WARNING and CAUTION symbols and a power source of 115 Vac or 230 Vac, 48 to 66 instructions should be reviewed before operating Hz, 475 W maximum.

  • Page 18: Power Cable, Line Voltage Selection

    HP 16500A/16501A - Installation To operate the instrument from a power source 2-7. Power Cable other than the one set at Hewlett-Packard, proceed as follows: This instrument is equipped with a three-wire power cable. When connected to an appropriate 1. Turn the front panel switch to STBY and ac power outlet, this cable grounds the instrument turn the rear panel power switch to OFF.

  • Page 19: Power Cord Configurations

    HP 16500A/16501A - Installation Figure 2-2. Power Cord Configurations...

  • Page 20: User Interface, Hp 16500a User Interface Devices

    HP 16500A/16501A - Installation Figure 2-3. HP 16500A User Interface Devices 2-8. User Interface The Optional Mouse The mouse is an optional user interface accessory Four devices may be used to interface with the (HP 46060A). The mouse functions in the same HP 16500A and all installed modules, the way as the touchscreen and the knob.

  • Page 21: Hp-ib Interfacing, Hp-ib Address Selection, Hp-ib Interface Connector

    (asynchronously) at the rate of the select individual instruments on the bus. The slowest active device used in that transfer. The address of the HP 16500A defaults at power-on to data byte control lines coordinate the handshaking decimal "07". The corresponding ASCII code is a and form the second functional group.

  • Page 22: System Configuration Menu, Hp-ib Configuration Menu

    1. With the operating system disk in one of the disk drives, turn the instrument on to obtain the System Configuration menu. See figure 2-5. Figure 2-5. System Configuration Menu 2. Touch the HP-IB field to obtain the HP-IB Configuration Menu. See figure 2-6. Figure 2-6. HP-IB Configuration Menu...

  • Page 23: Hp-ib Configuration With Keypad

    HP 16500A/16501A - Installation 3. Rotate the knob to select the desired HP-IB address. The address number is shown in the HP-IB Address field. The address number may also be entered via the keypad. Touch the HP-IB field again to bring up the keypad. Select the new number using the keypad, then touch Done to enter Figure 2-7.

  • Page 24: Hp-ib Interface Functions, Rs-232c Interface, Hp 16500a Hp-ib Functions

    HP 16500A/16501A - Installation 2-11. HP-IB Interface Functions The HP-IB interface offers 10 functions to support communications. Table 2-1 lists the HP-IB functions that the HP 16500A uses. Table 2-1. HP 16500A HP-IB Functions HP 16500A Mne- Implemen- monic Interface Function Name...

  • Page 25: Rs-232c Signal Definitions

    HP 16500A/16501A - Installation Table 2-2. RS-232C Signal Definitions RS-232C Pin No. Function Standard Signal Direction and Level Protective Ground Not applicable Transmitted Data (TD) Data from Mainframe High = Space = "0" = +12V Low = Mark = "1"= -12V...

  • Page 26: Baud Rate Selection, System Configuration Menu, Rs-232c Configuration Menu

    HP 16500A/16501A - Installation 2-13. Baud Rate Selection The baud rate of the HP 16500A is set at power-on for 9600 baud. To change the baud rate, proceed as follows: 1. With the operating system disk in one of the disk drives, turn on the instrument to obtain the System Configuration menu.

  • Page 27: Baud Rate Pop-up Menu, Configuration

    HP 16500A/16501A - Installation 3. Touch the Baud Rate field, then select the required rate. See figure 2-10. Make any other changes to the RS-232C configuration while you are in this menu. Figure 2-10. Baud Rate Pop-Up Menu 4. When the RS-232C configuration is correct, touch the Done field and the System Configuration screen will be displayed.

  • Page 28: Degaussing The Display, Operating Environment, Storage And Shipment, Packaging, Tagging For Service, Cleaning Requirements

    Remove the disks from the disk drives and 2-14. Degaussing the Display install the yellow shipping disks. After the HP 16500A has been used for awhile, Wrap the instrument in heavy paper or plastic. the CRT may become magnetized and the color or other display data may become distorted.

  • Page 29: Hp 16501a Expansion Frame Installation

    1. Turn off the HP 16500A mainframe power switch, then unplug the power cord. Disconnect any input connections. 2. Verify the correct setting of the Line Select switch located on the rear panel of the HP 16501A. See section 2-6, "Line Voltage Selection."...

  • Page 30: Endplate Overlap

    HP 16500A/16501A - Installation 5. Reposition all cards and filler panels so that the endplates overlap properly. 6. Firmly seat the bottom card into the backplane connector of the mainframe. Keep applying pressure to the center of the card endplate while tightening the thumb screws finger tight.

  • Page 31

    7. Insert one end of the interface cable into the port located on the mainframe interface card in the HP 16500A. Insert the other end of the interface cable into the port located on the expansion interface card in the HP 16501A.

  • Page 32

    Turn on the line switch located on the rear panel of each frame. c. Turn on the power standby switch located on the front-panel of the HP 16500A mainframe. When the power-up tests are complete, the HP 16500A mainframe screen shows the Mainframe Interface Card in one of the card slots.

  • Page 33

    TABLE OF CONTENTS Section III Performance Tests Page 3-1. Introduction........................3-1...

  • Page 34

    HP 16500A/16501A - Performance Tests SECTION III Performance Tests 3-1. Introduction This section normally contains the performance verification tests. Because there are no specifications for the HP 16500A/16501A to test, there are no performance tests.

  • Page 35

    TABLE OF CONTENTS Section IV Adjustments Page 4-1. Introduction........................4-1 4-2. Degaussing the Display....................4-1 4-3. Safety Considerations .....................4-1 4-4. Adjustment Test Patterns ....................4-2 4-5. Color Display Module Adjustments .................4-7...

  • Page 36

    SECTION IV Adjustments 4-1. Introduction 4-2. Degaussing the Display The HP 16500A/16501A requires no adjusting After the instrument has been used for awhile, the when used in a normal environment. The CRT may become magnetized and the color or procedure given in this section is for the color other data may become distorted.

  • Page 37: Adjustment Test Patterns, System Configuration Menu, Accessing The Test System

    HP 16500A/16501A - Adjustments 4-4. Adjustment Test Patterns Six test patterns are required for adjusting the color module: one white cross hatch pattern, one white full screen raster, a full screen pattern for each primary color (red, green, blue), and one black full screen raster.

  • Page 38: Loading The Test System, Test System Configuration

    HP 16500A/16501A - Adjustments 3. Verify that test files are on an installed disk. Touch the field close to the center of the screen to load the Test System. See figure 4-3. Figure 4-3. Loading the Test System 4. After the Test System has been loaded from the disk, the Test Configuration will be displayed. See figure 4-4.

  • Page 39: Selecting Mainframe Test Menu, Mainframe Test Menu

    HP 16500A/16501A - Adjustments 5. Touch the Test System field, then select Mainframe Test from the pop-up menu. See figure 4-5. Figure 4-5. Selecting Mainframe Test Menu 6. The Mainframe Test menu is now displayed. See figure 4-6. Select the Color Display Test field to display the white cross hatch test pattern, which is the first test pattern in the system.

  • Page 40: Selecting The Test Patterns, Exiting Mainframe Test System

    HP 16500A/16501A - Adjustments 7. With every touch of the Continue field, the next test pattern will be displayed. See figure 4-7. Figure 4-7. Selecting the Test Patterns When Continue is selected from the black raster pattern, the Mainframe Test menu will be displayed.

  • Page 41: Exiting Test System Configuration, System Configuration

    HP 16500A/16501A - Adjustments 9. Touch the Configuration field, then touch Exit Test. Install the operating system disk into one of the disk drives, then touch the field close to the center of the screen to reload the mainframe operating system. See figure 4-9.

  • Page 42: Color Display Module Adjustments

    CRT using a conventional external television-type degaussing coil. During any of the following adjustments, the CRT module must face west. Equipment Required: Nonmetallic Adjustment Tool...............HP Part Number 8710-1355 Procedure: Note The following adjustments are broken down into adjustment groups. The sequence of the adjustment groups must be followed due to the interaction and dependency of one adjustment to another.

  • Page 43: Crt Module Adjustment Flow Diagram

    HP 16500A/16501A - Adjustments Figure 4-11. CRT Module Adjustment Flow Diagram...

  • Page 44: Pin Amp Adjustment

    HP 16500A/16501A - Adjustments Geometry Adjustments 1. From the Mainframe Test System, select the Display Test menu. Select the white cross hatch test pattern. Refer to section 4-4, "Adjustment Test Patterns," for accessing the test patterns. 2. Preset the front panel BACKGROUND control to mechanical center.

  • Page 45: Bottom Rail Removal

    HP 16500A/16501A - Adjustments Geometry Adjustments (Continued) 8. Set the instrument on its left side, color module side up, then remove the bottom rail. See figure 4-13. Note Leave the instrument standing on its left side until the PIN PHASE adjustment has been completed.

  • Page 46: Pin Phase Adjustment

    HP 16500A/16501A - Adjustments Geometry Adjustments (Continued) 9. Adjust PIN PHASE (RV505), located on the left side PC board, to eliminate pin phase distortion in vertical lines of cross-hatch pattern as shown in figure 4-14. Figure 4-14. PIN PHASE Adjustment 10.

  • Page 47

    HP 16500A/16501A - Adjustments Focus Adjustment Note Geometry adjustments must be performed before making the focus adjustment. 1. Remove the rear and side fan. Refer to section 6, "Service," for the fan removal procedures. 2. From the Display Test menu of the Mainframe Test system, select the white cross-hatch test pattern.

  • Page 48: Purity Magnet Centering

    HP 16500A/16501A - Adjustments Landing Adjustment 1. From the Display Test menu, select the white raster (full screen display). 2. Turn the front panel BRIGHTNESS Control to maximum. 3. Degauss the entire CRT screen by pressing the Degaussing switch located on the rear panel of the instrument.

  • Page 49: Purity Magnet Adjustment Raster

    HP 16500A/16501A - Adjustments Landing Adjustment (Continued) 6. Move the deflection yoke towards the rear of the instrument, until the left edge of the raster turns red Figure 4-16. Purity Magnet Adjustment Raster and the right edge of the raster turns blue. See figure 4-16.

  • Page 50: Landing And Purity Adjustment Guide

    HP 16500A/16501A - Adjustments Landing Adjustment (Continued) 10. If the landing is not correct in step 9, repeat steps 6 through 9 for the best compromise. See Figure 4-17. Landing and Purity Adjustment Guide figure 4-17. 11. If the landing is not correct in step 10, readjust the purity magnets for the best landing of each color.

  • Page 51: Static Convergence

    HP 16500A/16501A - Adjustments Static Convergence 1. Preset the front panel BACKGROUND control to mechanical center. 2. Preset the front panel BRIGHTNESS control to maximum. 3. Temporarily disconnect the power from the instrument and remove the PC board shield cover from the rear of the CRT Display Module by prying evenly on all four sides.

  • Page 52: Y Bow Adjustment, Y Bow Cross Adjustment

    HP 16500A/16501A - Adjustments Dynamic Convergence 1. From the Display Test menu, select the white cross-hatch test pattern. 2. Adjust the 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. See figure 4-19.

  • Page 53: V.stat Top Adjustment, V.stat Bottom Adjustment

    HP 16500A/16501A - Adjustments Dynamic Convergence (Continued) 4. Adjust the V.STAT TOP (RV801) and the V.STAT BOTTOM (RV802), located on the bottom PC board. These two adjustments allow you to obtain coincidence of red, blue, and green where the top and bottom horizontal lines intersect with the center vertical line. See figures 4-21 and 4-22.

  • Page 54: H.amp Adjustment, H.tilt Adjustment

    HP 16500A/16501A - Adjustments Dynamic Convergence (Continued) 5. Adjust the H.AMP (RV807), located on the bottom PC board, for equal amounts of misconvergence Figure 4-23. H.AMP Adjustment at the right and left sides of the screen. See figure 4-23. Figure 4-24. H.TILT Adjustment Adjust the H.TILT (RV806), located on the bottom PC board, for coincidence of red, green, and blue at the...

  • Page 55

    HP 16500A/16501A - Adjustments White Balance 1. From the Display Test menu, select a blank (colorless) raster. Note Any text on the screen will not affect this adjustment. 2. Set the front panel BACKGROUND and SUB BRT (RV901), located on the bottom PC board, to mechanical center.

  • Page 56: Abbreviations, Introduction, Replaceable Parts List, Exchange Assemblies, Ordering Information

    TABLE OF CONTENTS Section V Replaceable Parts Page 5-1. Introduction........................5-1 5-2. Abbreviations........................5-1 5-3. Replaceable Parts List ....................5-1 5-4. Exchange Assemblies .....................5-1 5-5. Ordering Information .......................5-1 5-6. Direct Mail Order System ....................5-2...

  • Page 57

    XXXXX-695XX (where the Table 5-2 shows the list of replaceable parts for new part would be XXXXX-665XX). the HP 16500A and table 5-3 shows the list of replaceable parts for the HP 16501A. The tables Before ordering an exchange assembly, check...

  • Page 58: Direct Mail Order System

    HP 16500A/16501A - Replaceable Parts Prepaid transportation (there is a small 5-6. Direct Mail Order System handling charge for each order). Within the USA, Hewlett-Packard can supply parts No invoices. through a direct mail order system. Advantages of using the system are as follows: To provide these advantages, a check or money order must accompany each order.

  • Page 59: Reference Designator And Abbreviations

    HP 16500A/16501A - Replaceable Parts Table 5-1. Reference Designator and Abbreviations REFERENCE DESIGNATOR =assembly =fuse =transistor;SCR; =integrated circuit; =fan;motor =filter triode thyristor microcircuit =battery =hardware =resistor =electron tube; glow =capacitor =electrical connector =thermistor lamp =diode;diode thyristor; (stationary portion);jack =switch;jumper =voltage regulator;...

  • Page 60

    HP 16500A/16501A - Replaceable Parts Figure 5-1. HP 16500A Assembly Parts...

  • Page 61: Hp 16500a Replaceable Parts

    HP 16500A/16501A - Replaceable Parts Table 5-2. HP 16500A Replaceable Parts Reference HP Part Designator Number CD QTY Description HP 16500A EXCHANGE ASSEMBLIES 16500-69502 BOARD ASSEMBLY-FRONT PANEL (EXCHANGE) 16500-69503 BOARD ASSEMBLY-MICROPROCESSOR (EXCHANGE-VER. 00.00 ROM) 16500-69507 BOARD ASSEMBLY-MICROPROCESSOR (EXCHANGE-VER. 00.02 ROM)

  • Page 62

    HP 16500A/16501A - Replaceable Parts Figure 5-2. HP 16500A Chassis Parts...

  • Page 63

    HP 16500A/16501A - Replaceable Parts Table 5-2. HP 16500A Replaceable Parts (continued) Reference HP Part Designator Number CD QTY Description HP 16500A CHASSIS PARTS 0515-0372 SCREW M3 X 0.5 8MM-LG 0515-0433 SCREW M4 X 0.7 10MM-LG 0515-0435 SCREW M4 X 0.7 14MM-LG 0515-0664 SCREW M3 X 0.5 12MM-LG...

  • Page 64

    HP 16500A/16501A - Replaceable Parts Table 5-2. HP 16500A Replaceable Parts (continued) Reference HP Part Designator Number CD QTY Description MP37 8160-0551 EMI SHIELDING-BRAIDED MP38 0590-1868 FAN CLIP MP39 16500-45402 DISK INSULATOR MP40 16500-94307 IDENTIFICATION LABEL MP41 16500-00604 SHIELD-FRONT DISK DRIVE...

  • Page 65: Hp 16501a Assembly Parts

    HP 16500A/16501A - Replaceable Parts Figure 5-3. HP 16501A Assembly Parts 5-10...

  • Page 66: Hp 16501a Replaceable Parts

    HP 16500A/16501A - Replaceable Parts Table 5-3. HP 16501A Replaceable Parts Reference HP Part Designator Number CD QTY Description HP 16501A EXCHANGE ASSEMBLIES 16500-69508 MAINFRAME INTERFACE BOARD (EXCHANGE) 16500-69500 LOW VOLTAGE POWER SUPPLY ASSEMBLY (EXCHANGE) HP 16501A ELECTRICAL ASSEMBLIES 16501-66501...

  • Page 67: Hp 16501a Chassis Parts

    HP 16500A/16501A - Replaceable Parts Figure 5-4. HP 16501A Chassis Parts 5-12...

  • Page 68

    HP 16500A/16501A - Replaceable Parts Table 5-3. HP 16501A Replaceable Parts (continued) Reference HP Part Designator Number CD QTY Description HP 16501A CHASSIS 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 69: Table Of Contents

    TABLE OF CONTENTS Section VI Service Page 6-1. Introduction ........................6-1 6-2. Safety Considerations....................6-1 6-3. Service Test Equipment Required .................6-1 6-4. Theory of Operation .......................6-1 6-5. Power-Up Tests ......................6-6 6-6. Mainframe Tests ......................6-8 6-7. Troubleshooting ......................6-19 6-8. Repair ..........................6-46 6-9. Tools Required.......................6-47 6-10.

  • Page 70: Service Test Equipment Required, Introduction, Safety Considerations, Theory Of Operation

    1, table 1-2. Any equipment that satisfies critical specifications given in the table may be substituted. 6-2. Safety Considerations The HP 16500A/16501A has been designed in 6-4. Theory of Operation accordance with accepted safety standards. Safety symbols used with Hewlett-Packard...

  • Page 71: Hp 16500a/16501a System Overview

    HP 16500A/16501A - Service Figure 6-1. HP 16500A/16501A System Overview...

  • Page 72

    HP 16500A power supply. When power is applied by 368 lines. The display is non-interlacing and is to the HP 16500A, a relay allows the power supply refreshed every 1/60 of a second (not in the HP 16501A to turn on. An LED on the synchronized to the ac line).

  • Page 73: Microprocessor Block Diagram

    HP 16500A/16501A - Service Figure 6-2. Microprocessor Block Diagram...

  • Page 74

    HP 16500A/16501A - Service Microprocessor Board Theory The HP 16500A interfaces to HP-IB as defined by IEEE Standard 488.2. The interface consists of The microprocessor board contains the system two octal transceivers and an HP-IB controller. memory, all the interfaces for the mainframe...

  • Page 75: Power- Up Tests, Power-up Tests

    Interrupt Test 6-5. Power-Up Tests The Interrupt Test checks the microprocessor The HP 16500A power-up tests check the interrupts (interrupts 2 thorough 7). This test mainframe circuitry only. None of the option returns a pass or fail message. If any interrupts modules are tested at power-up.

  • Page 76

    HP 16500A/16501A - Service Touchscreen Test Front and Rear Disk Tests The Touchscreen Test checks for light pulses The Disk Tests read each disk to identify the between LED (light emitting diode) pairs and format. If the format cannot be identified, the test returns a pass, fail or an impair message.

  • Page 77: Mainframe Tests, System Configuration

    HP 16500A/16501A - Service 6-6. Mainframe Tests The system Mainframe Tests allow the testing of portions of the microprocessor board including the system peripheral interfaces, the disk drives, and the color module. The self-test software for the mainframe and each optional module is included on a composite disk shipped with the mainframe.

  • Page 78: Accessing The Test System, Loading The Test System Software

    HP 16500A/16501A - Service 2. Touch the Configuration field, then touch the Test field from the pop-up menu. See figure 6-4. Figure 6-4. Accessing the Test System 3. Verify that test files are on an installed disk and that all valuable data has been stored. Touch the field close to the center of the screen to load the test system.

  • Page 79: Test System Configuration, Mainframe Test Menu

    HP 16500A/16501A - Service 4. After the test software has been loaded, the Test System Configuration menu is displayed. See figure 6-6. Figure 6-6. Test System Configuration 5. Touch the Test System field, then touch Mainframe Test from the pop-up menu. The Mainframe Test menu is displayed.

  • Page 80: All System Test

    HP 16500A/16501A - Service Performing the All System Test To perform the All System Test, proceed as follows: 1. Install a formatted disk into each disk drive (be sure to verify that the disks are not write protected). Install the RS-232C loopback connector on the microprocessor RS-232C port. Remove any connections to the input BNC.

  • Page 81: Selecting The Color Display Patterns

    HP 16500A/16501A - Service The Color Display Test The Color Display Test is used to test the display. This test is not normally needed. These screens are primarily used when the color module requires adjusting. For the adjustment procedure, refer to section 4-5, "Color Display Module Adjustments."...

  • Page 82: Mainframe Test Menu, Rom Test Screen

    A description of each of the mainframe tests is provided at the end of the ROM Test procedure. Only performing the ROM Test is described in detail since the RAM, HP-IB, RS-232C, HIL, Disk, and Intermodule tests are accessed and performed in the same manner.

  • Page 83: Choosing The Single Or Repetitive Mode, Rom Test With Test Results

    HP 16500A/16501A - Service 3. Touch the Run field, slide your finger downward to the Single, Repetitive or Cancel field, then lift your finger off the screen. If the Cancel field is selected, the test sequence is not started. See figure 6-12.

  • Page 84: Exiting The Mainframe Test System, Exiting Test Configuration

    HP 16500A/16501A - Service Exiting the Mainframe Test System The Mainframe Test System may be exited any time after a test is completed. To exit the Mainframe Test system, proceed as follows: 1. From any test screen, touch the Done field to display the Mainframe Test menu.

  • Page 85: Reloading The Mainframe System

    HP 16500A/16501A - Service 4. Verify that the operating system software is installed in a disk drive. Touch the field close to the center of the screen to exit the test system and to load the mainframe operating system. See figure 6-16.

  • Page 86

    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, suspect a faulty microprocessor board. RS-232C Test This test checks the basic interface functions of the RS-232C port.

  • Page 87

    HP 16500A/16501A - Service Disk Test This test checks both disk drives for the correct disk format and checks the ability of the system to read from and write to a test track on both disks. If the disk cannot be identified, the test is considered to have failed for that disk drive.

  • Page 88: Troubleshooting

    HP 16500A/16501A - Service 6-7. Troubleshooting The troubleshooting information for the HP 16500A/16501A consists of flowcharts, signal information for the color module, power supply voltages, and interface troubleshooting. Troubleshooting an instrument failure to the assembly level can be accomplished using the troubleshooting flowcharts provided in this section.

  • Page 89: Troubleshooting Flowchart 1

    HP 16500A/16501A - Service HP 16500A/16501A Main Flowchart Troubleshooting Flowchart 1 Figure 6-17. Troubleshooting Flowchart 1 6-20...

  • Page 90: Troubleshooting Flowchart 2

    HP 16500A/16501A - Service HP 16500A/16501A Main Flowchart Troubleshooting Flowchart 2 Figure 6-18. Troubleshooting Flowchart 2 6-21...

  • Page 91: Troubleshooting Flowchart 3

    HP 16500A/16501A - Service HP 16500A/16501A Color Module Flowchart Troubleshooting Flowchart 3 Figure 6-19. Troubleshooting Flowchart 3 6-22...

  • Page 92: Troubleshooting Flowchart 3 (continued)

    HP 16500A/16501A - Service HP 16500A/16501A Color Module Flowchart (continued) Troubleshooting Flowchart 3 (continued) Figure 6-20. Troubleshooting Flowchart 3 (continued) 6-23...

  • Page 93: Troubleshooting Flowchart 4

    HP 16500A/16501A - Service HP 16500A/16501A Power-Up Flowchart Troubleshooting Flowchart 4 Figure 6-21. Troubleshooting Flowchart 4 6-24...

  • Page 94: Troubleshooting Flowchart 5

    HP 16500A/16501A - Service HP 16500A/16501A System Start Flowchart Troubleshooting Flowchart 5 Figure 6-22. Troubleshooting Flowchart 5 6-25...

  • Page 95: Troubleshooting Flowchart 6

    HP 16500A/16501A - Service HP 16500A/16501A Mainframe Tests Flowchart Troubleshooting Flowchart 6 Figure 6-23. Troubleshooting Flowchart 6 6-26...

  • Page 96: Troubleshooting Flowchart 7

    HP 16500A/16501A - Service HP 16500A/16501A Power Supply Flowchart Figure 6-24. Troubleshooting Flowchart 7 Troubleshooting Flowchart 7 6-27...

  • Page 97: Troubleshooting Flowchart 8

    HP 16500A/16501A - Service HP 16500A/16501A HIL Flowchart Troubleshooting Flowchart 8 Figure 6-25. Troubleshooting Flowchart 8 6-28...

  • Page 98: Troubleshooting Flowchart 9

    HP 16500A/16501A - Service HP 16500A/16501A Disk Drive Flowchart Troubleshooting Flowchart 9 Figure 6-26. Troubleshooting Flowchart 9 6-29...

  • Page 99: Troubleshooting Flowchart 10

    HP 16500A/16501A - Service HP 16500A/16501A RS-232C Flowchart Troubleshooting Flowchart 10 Figure 6-27. Troubleshooting Flowchart 10 6-30...

  • Page 100: Troubleshooting Flowchart 11

    HP 16500A/16501A - Service HP 16500A/16501A Intermodule Flowchart Troubleshooting Flowchart 11 Figure 6-28. Troubleshooting Flowchart 11 6-31...

  • Page 101: Troubleshooting Flowchart 12

    HP 16500A/16501A - Service HP 16500A/16501A Expansion Frame Flowchart Troubleshooting Flowchart 12 Figure 6-29. Troubleshooting Flowchart 12 6-32...

  • Page 102

    HP 16500A/16501A - Service This page intentionally left blank. 6-33...

  • Page 103: Cable Pin Numbers

    HP 16500A/16501A - Service Video Signals Check This procedure checks the video signals. 1. Turn off the instrument, then remove the bottom cover. 2. On the color module, disconnect the cable that connects the microprocessor board to the color module. Refer to figure 6-30 for the cable location.

  • Page 104: Color Module To Microprocessor Cable, Horizontal And Vertical Sync Signals

    HP 16500A/16501A - Service Figure 6-30. Color Module to Microprocessor Cable Horizontal Vertical Figure 6-31. Horizontal and Vertical Sync Signals 6-35...

  • Page 105

    HP 16500A/16501A - Service Power Supply Check Check the power supply LEDs for indications of power supply problems. 1. Turn off the power switch located on the rear panel of the instrument, then remove the top cover. 2. Apply power to the instrument.

  • Page 106: Power Supply Check

    HP 16500A/16501A - Service Figure 6-32. Power Supply Check 6-37...

  • Page 107: Power Supply Voltages

    HP 16500A/16501A - Service Power Supply Voltages Check the power supply voltages for indications of power supply problems. 1. Turn off the instrument, disconnect the power cord, then remove the top cover. 2. Using a DVM, measure the power supply voltages. Use figure 6-33 for power supply pin assignments and use table 6-2 for voltages.

  • Page 108: Power Supply Pins

    HP 16500A/16501A - Service Figure 6-33. Power Supply Pins 6-39...

  • Page 109

    To check the correct installation of the interface cable, refer to section 2-20, "HP 16501A Expansion Frame Installation." Procedure: 1. In the HP 1651B System Configuration menu, assign the analyzer to Type: State. Then, assign Pod 1 and Pod 2 to Machine 1. 6-40...

  • Page 110: Hp 1651b Format Menu, Probe Tip Connections

    HP 16500A operating system in one of the disk drives and install a disk containing the performance verification in the other disk drive. 4. Connect the HP 1651B pod 1 and pod 2 probe tip assemblies to three DIP clips as shown in figure 6-35.

  • Page 111: Expander Test Screen

    (ground) of the DIP clips with pin 10 (ground) of U18, U19, and U20. 6. Install the mainframe interface card into slot E of the HP 16500A. Connect the power cords to the frames, then turn on the frames. The mainframe interface card should appear in the HP 16500A System Configuration menu.

  • Page 112: Hp 1651b Test Screen

    HP 16500A/16501A - Service 8. Select Run on the HP 1651B, then scroll the data to fill the screen. The results on the HP 1651B screen should show the Data and Address alternating between AA and 55. See figure 6-37.

  • Page 113: Probe Tip Connections

    HP 16500A/16501A - Service 11. Connect the HP 1651B pod 1 and pod 2 probe tip assemblies to three DIP clips as shown in figure 6-38. The HP 1651B System Configuration menu and Format menu are setup the same as in step 1 and step 2.

  • Page 114

    (board), refer to section 6-20, "Expansion Interface Board Replacement." 17. Connect the HP 1651B pod 1 and pod 2 probe tip assemblies to three DIP clips as shown in figure 6-35. The HP 1651B System Configuration menu and the Format menu are the same as in step 1 and step 2.

  • Page 115: Repair, Replaceable Assemblies

    The repair procedures in this section are provided for the removal and replacement of major assemblies of the HP 16500A mainframe and of the HP 16501A expansion frame. After diagnosing the defective assembly using the troubleshooting flowcharts, refer to the appropriate repair procedure and follow the steps provided.

  • Page 116: Tools Required, Cover Removal

    Pozidriv #2 screwdriver. 6-10. Cover Removal There are four outside covers on the HP 16500A 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 117: Power Supply Replacement

    HP 16500A/16501A - Service 6-11. Power Supply Replacement When necessary, refer to other removal procedures. HP 16500A 1. Remove the power cord, the top cover, the left side cover, and the card or filler panel in the top slot of the card cage. To remove the covers, refer to section 6-10, "Cover Removal." To remove the optional module card, refer to the Service Manual for each module.

  • Page 118

    HP 16500A/16501A - Service Figure 6-39. Power Supply Replacement 6-49...

  • Page 119: Mother Board Replacement

    HP 16500A/16501A - Service 6-12. Mother Board Replacement When necessary, refer to other removal procedures. HP 16500A 1. Remove the power cord, all optional modules, and top, bottom and left side covers. To remove the covers, refer to section 6-10, "Cover Removal." To remove the optional modules, refer to the Service Manual for each module.

  • Page 120

    HP 16500A/16501A - Service Figure 6-40. Mother Board Replacement 6-51...

  • Page 121: Rear Fan Replacement

    HP 16500A/16501A - Service 6-13. Rear Fan Replacement When necessary, refer to other removal procedures. HP 16500A and HP 16501A 1. Remove the power cord and the top cover. To remove the top cover, refer to section 6-10, "Cover Removal."...

  • Page 122

    HP 16500A/16501A - Service Figure 6-41. Rear Fan Replacement 6-53...

  • Page 123: Side Fan Replacement

    HP 16500A/16501A - Service 6-14. Side Fan Replacement When necessary, refer to other removal procedures. HP 16500A and HP 16501A 1. Remove the power cord and top, bottom, and right side covers. To remove the covers, refer to section 6-10, "Cover Removal."...

  • Page 124

    HP 16500A/16501A - Service Figure 6-42. Side Fan Replacement 6-55...

  • Page 125: Rear Disk Drive Replacement

    HP 16500A/16501A - Service 6-15. Rear Disk Drive Replacement When necessary, refer to other removal procedures. HP 16500A 1. Remove the power cord and the bottom cover of the instrument. To remove the bottom cover, refer to section 6-10, "Cover Removal."...

  • Page 126

    HP 16500A/16501A - Service Figure 6-43. Rear Disk Drive Replacement 6-57...

  • Page 127: Front Disk Drive Replacement

    HP 16500A/16501A - Service 6-16. Front Disk Drive Replacement When necessary, refer to other removal procedures. HP 16500A 1. Remove the power cord and the top cover. To remove the top cover, refer to section 6-10, "Cover Removal." 2. Remove the two disk drive mounting screws.

  • Page 128

    HP 16500A/16501A - Service Figure 6-44. Front Disk Drive Replacement 6-59...

  • Page 129: Microprocessor Board Replacement

    HP 16500A/16501A - Service 6-17. Microprocessor Board Replacement When necessary, refer to other removal procedures. HP 16500A 1. Remove the power cord, all optional modules, and the bottom cover. To remove the bottom cover, refer to section 6-10, "Cover Removal." To remove the optional modules, refer to the Service Manual for each module.

  • Page 130

    HP 16500A/16501A - Service Figure 6-45. Microprocessor Board Replacement 6-61...

  • Page 131: Front-panel Board Replacement

    HP 16500A/16501A - Service 6-18. Front-Panel Board Replacement When necessary, refer to other removal procedures. HP 16500A 1. Remove the power cord and the bottom cover. To remove the bottom cover, refer to section 6-10, "Cover Removal." Remove the top trim from the front frame.

  • Page 132

    HP 16500A/16501A - Service Figure 6-46. Front-Panel Board Replacement 6-63...

  • Page 133: Color Display Module Replacement

    HP 16500A/16501A - Service 6-19. Color Display Module Replacement The color display module replacement procedure consists of three sections: Removing the module from the mainframe. Transferring parts to the replacement module. Installing the module in the mainframe. When necessary, refer to other removal procedures.

  • Page 134: Color Display Module Removal

    HP 16500A/16501A - Service Figure 6-47. Color Display Module Removal 6-65...

  • Page 135

    HP 16500A/16501A - Service Transferring Parts to the Replacement Module The purpose of this procedure is to transfer the mechanical parts from the old module to the replacement module. 1. Remove the rear mounting bracket from the rear support bracket. Remove the rear support bracket from the color display module.

  • Page 136: Transferring Parts

    HP 16500A/16501A - Service Figure 6-48. Transferring Parts 6-67...

  • Page 137

    HP 16500A/16501A - Service Installing the Replacement Color Display Module 1. Carefully slide the color display module most of the way into the mainframe. To prevent damage to the cables, make sure that they clear the mainframe. 2. Connect the color display to power supply cable to the power supply. Slide the display module completely into the mainframe.

  • Page 138: Color Display Module Installation

    HP 16500A/16501A - Service Figure 6-49. Color Display Module Installation 6-69...

  • Page 139: Expansion Interface Board Replacement

    HP 16500A/16501A - Service 6-20. Expansion Interface Board Replacement When necessary, refer to other removal procedures. HP 16501A 1. Remove the power cord, all optional modules, and the bottom cover. To remove the bottom cover, refer to section 6-10, "Cover Removal." To remove the optional module cards, refer to the Service Manual for each module.

  • Page 140

    HP 16500A/16501A - Service Figure 6-50. Expansion Interface Board Replacement 6-71...

  • Page 141: Mainframe Interface Board Replacement, Endplate Overlap

    3. Starting from the top, loosen the thumb screws on filler panels and cards in the HP 16500A mainframe that are located above the mainframe interface card. Starting from the top, pull the cards and filler panels halfway out.

  • Page 142

    HP 16500A/16501A - Service Figure 6-53. Mainframe Interface Board Replacement 6-73...

  • Page 143: Safety Considerations

    SAFETY CONSIDERATIONS GENERAL - This is a Safety Class I instrument (provided with Do not install substitute parts or perform any unauthorized terminal for protective earthing). modification to the instrument. OPERATION - BEFORE APPLYING POWER verify that the Adjustments described in the manual are performed with power transformer primary is matched to the available line volt- power supplied to the instrument while protective covers age, the correct fuse is installed, and Safety Precautions are...

  • Page 144

    For warranty service or repair, this product must be returned to a service facility designated by HP. Buyer shall prepay shipping charges to HP and HP shall pay shipping charges to return the product to Buyer.

This manual also for:

16501a

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