HP 16500B User Manual

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16500B/16501A Logic Analysis System Service Guide

16500-97011

August 1994

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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.

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.

Features

Some of the main features of the HP 16500B/16501A are as follows:

• Modular mainframe with five card slots

• Expansion frame, which expands the total system card slots to ten

• Touchscreen user interface

• 86 Mbyte hard disk drive

• High-density 3.5-inch flexible disk drive

• Color monitor

• Intermodule triggering and time correlation of acquired data

• HP-IB, RS-232C or optional LAN interfaces for hardcopy output to a printer or

controller interface

Service Strategy

The service strategy for this instrument is the replacement of defective assemblies. This service guide contains information for finding a defective assembly by testing and servicing the HP 16500B/16501A.

This instrument can be returned to Hewlett-Packard for all service work, including troubleshooting. Contact your nearest Hewlett-Packard Sales Office for more details.

The HP 16500B Logic Analysis System

iii

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.

Chapter 2 tells how to prepare the instrument for use. Chapter 3 gives instructions on how to test the performance of the instrument. Chapter 4 contains calibration instructions for the instrument. Chapter 5 contains self-tests and flowcharts for troubleshooting the instrument. Chapter 6 tells how to replace the instrument and assemblies of the instrument, and how to

return them to Hewlett-Packard. Chapter 7 lists replaceable parts, shows an exploded view, and gives ordering information. Chapter 8 explains how the instrument works and what the self-tests are checking. This book also contains information about the HP 16500L interface module when using an

expansion frame or an external monitor. For information about using the interface module with a local area network, refer to the manuals for the HP 16500L.

Contents

1 General Information

Accessories 1–2 Specifications 1–3 Characteristics 1–3 Recommended Test Equipment 1–6

2 Preparing for Use

To inspect the logic analysis system 2–2 To apply power 2–3 To operate the user interface 2–3 To set the line voltage 2–4 To degauss the display 2–5 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 To perform the self-tests 3–4

4 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

5 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 check 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

Contents

6 Replacing Assemblies

To remove and replace the

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 6–14 Expansion interface board 6–15 Mother board 6–16 Front-panel board 6–18 Color display assembly 6–19

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

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

HP-IB 8–18

RS-232C 8–19

Accessories 1–2 Specifications 1–3 Characteristics 1–3 Recommended Test Equipment 1–6

General Information

This chapter lists the accessories, the specifications and characteristics, and the recommended test equipment.

Accessories

The following accessories are supplied with the HP 16500B/16501A Logic Analysis System.

Accessories Supplied Qty

Training Kit 1

Setting Up The System Guide 1

User’s Reference 1

Programming Reference 1

Service Guide 1

RS-232C Loopback Connector 1

Power cord 1

Disk pouch containing backup composite software 1

Feeling Comfortable With Logic Analyzers

Feeling Comfortable with Digitizing Oscilloscopes

Filler Panels Quantity depends on how many modules are

ordered wi th 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

General Information

Specifications

The specifications are the performance standards against which the product is tested. There are no specifications for the HP 16500B or the HP 16501A.

Characteristics

These characteristics are not specifications, but are included as additional information. The following characteristics are typical for the HP 16500B/16501A system.

Hard Disk Drive Capacity 86 Mbyte unformatted; Formatted as a Microsoft DOS disk drive IDE Interface

Bus.

Flexible Disk Drive Capacity 1.44 Mbyte formatted Microsoft DOS or LIF supported.

Specifications

Programmability Instrument settings and operating modes, including automatic measurements, may be

remotely programmed via RS-232C, HP-IB (IEEE-488), or optional HP 16500L (Ethernet).

Hardcopy Output Printers Supported HP ThinkJet, HP QuietJet, HP LaserJet, HP PaintJet, HP Deskjet,

HP Deskjet C, Epson and Epson-compatible (for example, 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; 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.

Input/Output Rear Panel BNCs:

Intermodule Bus (IMB) Characteristics

Port-in

1.5 mA to +6 V at 1.6 mA.

Port-out

into 50 Ω.

Run Control Oscilloscope, timing, state, and pattern generation can be armed by Group Run. Modules can run concurrently or be armed in series. Each module can arm one or more modules.

Mixed Display Mode Any timing or oscilloscope waveform displays can be mixed. State listings can be included with waveforms in the State/Timing Mixed Mode display.

User selectable: TTL, ECL or user defined; Zin = 4 kΩ ; Maximum Vin = -6.0 V at

Output signal is active high, TTL output level, high > 2 V into 50 Ω, low < 0.4 V

Acquiring Data for Mixed Displays To obtain a mixed display, multiple modules must be armed through the IMB. To include state listings in mixed mode displays, state time tagging must be on.

1–3

General Information

Characteristics

Time Interval Accuracy Between Modules Equals the sum of the channel-to-channel time interval accuracies of each module used in the measurement, for a deskewed measurement.

Time Correlation Resolution 2 ns (500 MHz).

Operating Environment

Weight HP 16500B

Temperature

Instrument Disk Media Probes and Cables

Humidity

Instrument Disk media and hard drive

Altitude Up to 4600 m (15 000 ft). Hard drive to 300 m (10,000 ft.).

Vibration

Operating Random vibration 5-500Hz, 10 minutes per axis, ~ 2.41 g (rms). Non-operating Random vibration 5-500Hz, 10 minutes per axis, ~ 2.4 g (rms); and

swept sine resonant search, 5-500Hz, 0.75g (0-peak), 5 minute dwell at 4 resonances per axis.

Net 18.1 kg (40 lbs) + [0.7 kg (1.6 lbs) x number of optional cards installed]. Shipping 25.9 kg (57 lbs) + [3.6 kg (8 lbs) x number of optional cards installed].

HP 16501A

Net 12.2 kg (27 lbs) + [0.7 kg (1.6 lbs) x number of optional cards installed]. Shipping 19.9 kg (44 lbs) + [3.6 kg (8 lbs) x number of optional cards installed].

0 °C to 50 °C (+32 °F to 122 °F).

10 °C to 40 °C (+50 °F to 104 °F).

0 °C to 65 °C (+32 °F to 149 °F).

up to 95% relative humidity at 40 °C (104 °F).

8% to 80% relative humidity at 40 °C (104 °F).

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.

1–4

Dimensions Refer to the following figure for dimensional detail.

General Information

Characteristics

Dimensional Detail

1–5

General Information

Recommended Test Equipment

Equipment Required

Equipment Critical Specifications Recommended

Model/Part

Oscilloscope 100 MHz Bandwidth HP 54600A T Voltmeter HP 3478A T RS-232C Loopback Connector

*A = Adjustment P = Performance Tests T = Troubleshooting

HP Part Number 01650-63202

Use

1–6

Preparing for Use

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.

Operating Environment

The operating environment is listed in chapter 1. Note the noncondensing humidity limitation. Condensation within the instrument can cause poor operation or malfunction. Provide protection against internal condensation.

The logic analysis system will operate at all specifications within the temperature and humidity range given in chapter 1. However, reliability is enhanced when operating it within the following ranges:

WARNING

• Temperature: +20 °C to +35 °C (+68 °F to +95 °F)

• Humidity: 20% to 80% noncondensing

Storage

Store or ship the logic analysis system in environments within the following limits:

• Temperature: -40 °C to + 75 °C

• Humidity: Up to 90% at 65 °C

• Altitude: Up to 15,300 meters (50,000 feet)

Protect the system from temperature extremes which cause condensation on the instrument.

To inspect the logic analysis system

1 Inspect the shipping container for damage.

If the shipping container or cushioning material is damaged, keep them until you have checked the contents of the shipment and checked the instrument mechanically and electrically.

Hazardous voltages exist in this instrument. To avoid electrical shock, do not apply power to a damaged instrument.

2–2

2 Check the supplied accessories.

Accessories supplied with the logic analysis system are listed in "Accessories" in chapter 1.

3 Inspect the product for physical damage.

Check the logic analysis system and the supplied accessories for obvious physical or mechanical defects. If you find any defects, contact your nearest Hewlett-Packard Sales Office. Arrangements for repair or replacement are made, at Hewlett-Packard’s option, without waiting for a claim settlement.

To apply power

1 Check that the line voltage selector, located on the rear panel, is on the correct

setting and the correct fuse is installed.

See also, "To set the line voltage" in this chapter.

2 Connect the power cord to the instrument and to the power source.

This instrument is equipped with a three-wire power cable. When connected to an appropriate ac power outlet, this cable grounds the instrument cabinet. The type of power cable plug shipped with the instrument depends on the country of destination. Refer to chapter 7, "Replaceable Parts," for option numbers of available power cables.

Turn on the instrument line switch located on the rear panel, then turn on the power

standby switch located on the front panel.

Preparing for Use

To apply power

To operate the user interface

• To select a field on the mainframe 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.

• 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

Preparing for Use

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.

Turn the front panel power switch to the STBY position, then turn the power switch

to the Off position. Remove the power cord from the instrument.

2 Replace the main fuse with a 5 A/250 V fuse for 230 V operation, or a 10 A/125 V fuse

for 115 V operation.

3 Set the rear panel line select switch for the desired voltage. 4 Reconnect the power cord, turn on the rear panel power switch, then continue

normal operation.

5 If your system includes an HP 16501A Expansion Frame, repeat this procedure for it.

The expansion frame has only one power switch, and that switch is located on the rear panel.

Line Voltage Selection

2–4

Preparing for Use

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.

To clean the logic analysis system

• With the instrument turned off and unplugged, use mild soap and water to clean the

front and cabinet of the system. Harsh soap might damage the water-base paint.

To test the logic analysis system

The logic analysis system does not require calibration or adjustment.

• If you require a test to initially accept the operation, perform the self-tests in

chapter 3, "Testing Performance."

• If the logic analysis system does not operate correctly, go to the beginning of

chapter 5, "Troubleshooting."

2–5

CAUTION

Preparing for Use

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 mats when performing any service to modules.

Turn off the frame power switch, then unplug the power cord. Disconnect any input or output connections.

2 Plan your module configuration.

Refer to the manuals of individual modules for configuration information.

Loosen the thumb screws.

Cards or filler panels below the slots intended for installation do not have to be removed. Starting from the top, loosen the thumb screws on filler panels and cards that need to be

moved.

Starting from the top, pull the cards and filler panels that need to be moved halfway

out.

All multicard modules will be cabled together. To prevent damage to the cables and connectors, pull these cards out together.

Remove the cards and filler panels.

Remove the cards or filler panels that are in the slots intended for the module installation. Some modules for the logic analysis system require calibration if you move them to a different

slot. Refer to the manuals of individual modules for calibration information.

Install the module.

You may need to push all other cards into the card cage, but not completely in, to get them out of the way for installing the module.

Refer to the manuals of individual modules for cabling information.

Slide the complete module into the frame, but not completely in.

Each card is firmly seated and tightened one at a time in step 9.

8 Position all cards and filler panels so that the endplates overlap. 9 Seat the cards and tighten the thumbscrews.

Starting with the bottom card, firmly seat the cards into the backplane connector of the mainframe. Keep applying pressure to the center of the card endplate while tightening the thumbscrews finger-tight. Repeat this for all cards and filler panels starting at the bottom and moving to the top.

CAUTION

See Also Service Guides for the individual modules.

For correct air circulation, filler panels must be installed in all unused card slots. Correct air circulation keeps the instrument from overheating. Keep any extra filler panels for future use.

Plug in the system, then turn it on.

When you turn on the power switch, the logic analysis system performs power-up tests. After the power-up tests are complete, the screen will show your system configuration.

2–6

WARNING

CAUTION

Preparing for Use

To install the HP 16500L interface module

The HP 16500L interface module is required to connect the HP 16501A Expansion Frame to the HP 16500B mainframe.

Hazardous voltages exist on the power supply, the CRT, and the CRT driver board of the HP 16500B mainframe. To avoid electrical shock, disconnect the power from the instrument before performing the following procedures. After disconnecting the power, wait at least six minutes for the capacitors on the power supply board and the CRT driver board to discharge before servicing the instrument. However, if the AC LED on the power supply has any illumination, a significant charge remains on the power supply capacitors.

Electrostatic discharge can damage electronic components. Use grounded wriststraps and 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.

Remove power from the HP 16500B mainframe, then remove the optional modules,

the four rear feet, and the top and bottom covers of the mainframe.

2 Remove the sheetmetal plate on the rear of the mainframe covering the slot where

the HP 16500L interface module will be installed.

With the interface module installed, you will not use the plate. Save the plate to use in case the interface module is removed.

Remove the cable connecting the CRT module to the CPU board.

To release the cable, push the tabs on the board connector to the outside of the connector. With the interface module installed, you will not use this cable. Save the cable to use in case

the interface module is removed.

If you need more room to replace the CRT cable, you can remove the hard disk drive. Removing the hard disk is not necessary, but gives you more room for replacing the CRT cable. The hard disk is connected with four screws.

Connect one end of the new 40-pin cable to the CRT module.

Push the cable connector into the board connector until the tabs lock in the cable. If you removed the hard disk drive, replace it before going to the next step.

2–7

Preparing for Use

To install the HP 16500L interface module

5 Slide the interface module into the mainframe through the slot in the rear panel. 6 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.

Connect the end of the 40-pin CRT cable to the interface module.

7 8 Connect the 80-pin cable to the CPU board and to the interface module.

a Slide the 80-pin cable halfway through the rear slot of the card cage between the

interface module and the CPU board.

b Connect the cable to the CPU board.

c Connect the cable to the interface module.

Connect the 10-pin cable to the CPU board and to the interface module.

10 Replace the top and bottom covers, the optional modules, and the rear feet of the

mainframe.

11 Turn on the system.

a Connect a power cord to the frame.

b Turn on the line switch located on the rear panel the frame.

c Turn on the power standby switch located on the front panel of the mainframe.

When the power-up tests are complete, the mainframe screen shows "Ethernet" in the Communications menu.

2–8

CAUTION

Preparing for Use

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.

Electrostatic discharge can damage electronic components. Use grounded wriststraps and mats when performing any service to this card.

Turn off the mainframe power switch, then unplug the power cord. Disconnect any input connections.

2 Verify that the line select switch located on the rear panel of the expansion frame is

in the off position.

3 Install the HP 16500L interface module into the mainframe.

The procedure for installing the HP 16500L is on page 2–7.

4 Connect the interface cable to the expansion frame and to the interface module in

the mainframe.

To ensure correct insertion, the 68-pin "D" connectors on each end of the interface cable are asymmetric in shape. They only fit into their respective ports on the cards when oriented to match the shape of the ports.

When connecting the interface cable, you will hear two clicks. Make sure the cable connector is properly seated into the port by pulling the connector without pressing the release tabs. If the connector is properly seated, it will remain connected to the port.

Turn on the system.

a Connect a power cord to each frame.

b 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 mainframe.

When the power-up tests are complete, the mainframe screen shows "Master Frame" in a blue field.

2–9

Preparing for Use

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

Vertical deflection (fv) 59.95 Hz

Resolution 576 x 368 x dots x lines (WxH)

RGB video 0.714 VP-P, positive

Impedance 75 ohm , analog

External Sync Signal

Connector Pins

H TTL, negative 3.2 µS; W TTL, negative, 120 µS

Pin number Signal Pin number Signal

1 Red 6,7,8,10 Ground

2 Green 13 Horizontal Sync

3 Blue 14 Vertical Sync

1 Connect your monitor to the HP 16500L interface module installed into the

HP 16500B mainframe.

2 If your monitor needs adjusting, follow the manufacturer’s instructions.

2–10

Connector for external monitor

To perform the power-up tests 3–3 To perform the self-tests 3–4

Testing Performance

To ensure the logic analysis system is operating correctly, you can perform software tests (self-tests) on the system. Directions for performing the software tests are given in this chapter.

This chapter normally tells you how to test the performance of the logic analysis system against the specifications listed in chapter 1. Because there are no specifications for the HP 16500B/16501A, there are no performance verification tests.

Self-Tests

The self-tests listed in this chapter check the functional operation of the mainframe and the expansion frame. Self-tests for the optional modules installed in the frames are listed in the individual module Service Guides.

There are two types of self-tests: self-tests that automatically run at power-up, and self-tests that you select on the screen. For descriptions of the tests, refer to chapter 8, "Theory of Operation."

Perform the self-tests as an acceptance test when receiving the logic analysis system or when the logic analysis system is repaired.

If a test fails, refer to chapter 5, "Troubleshooting."

Test Interval

There is no recommended test interval for the HP 16500B mainframe or the HP 16501A expansion frame. However, each of the HP 16500-series option modules has performance verification tests and therefore require a periodic verification of specifications. 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.

3–2

Testing Performance

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. As each test completes, either "passed" or "failed" prints on the screen in front of the name of each test.

Disconnect all inputs, then insert a formatted disk into the flexible disk drive.

1 2 Let the instrument warm up for a few minutes, then cycle power by turning off then

turning on the power switch.

If the instrument is not warmed up, the power-up test screen will complete before you can view the screen.

As the tests complete, check if they pass or fail.

The Flexible Disk Test reports No Disk if a disk is not in the disk drive. If a power-up self-test fails, refer to chapter 5, "Troubleshooting."

Performing Power-Up Self-Tests

passed ROM Test

passed RAM Test

passed Interrupt Test

passed Display Test

passed HIL Controller Test

passed Front-Panel Test

passed Touchscreen Test

passed Correlator Test

passed Hard Disk Test

passed Flexible Disk Test

Loading Module Files

3–3

Testing Performance

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.

1 If you just did the power-up self-tests, go to step 2.

If you did not just do the power-up self-tests, disconnect all inputs, then turn on the power switch. Wait until the power-up tests are complete.

2 In the System Configuration menu, select Configuration, then select Test.

3 Select the box labeled Load Test System. 4 Select Test System, then select Mainframe Test from the pop-up menu.

3–4

Testing Performance

To perform the self-tests

5 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.

6 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. This step shows how to run all tests at once.

The status of the tests will change from Untested to Passed or Failed. If a test fails, refer to chapter 5, "Troubleshooting."

The Color Display Test is not normally needed. The screens are primarily used when the color display assembly requires adjusting. For the adjustment procedure, refer to chapter 4, "Calibrating and Adjusting."

Exit the mainframe tests.

a In the Mainframe Test menu, select Mainframe Test, then select Test System.

b Select Configuration, then select Exit Test in the pop-up menu.

c Select the field close to the center of the screen to exit the test system and to load the

mainframe operating system.

After the operating system is loaded, the System Configuration menu is displayed.

3–5

3–6

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

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.

Use the following procedures to adjust the CRT module to compensate for magnetic influences causing misconvergence.

WARNING

Hazard voltages exist on the power supply, the CRT, and the CRT driver board. To avoid electrical shock, read and follow the Safety and Warning considerations at the end of this manual before performing adjustment procedures.

Adjustment Interval

DO NOT PERFORM THESE ADJUSTMENTS AS A PART OF ROUTINE CALIBRATIONS. The following procedures are provided only for the few extreme cases where either the earth’s magnetic field or the user’s environment cause an unusable display due to misconvergence that cannot be corrected by degaussing the entire CRT screen.

DO NOT perform the procedures in this chapter before first degaussing the CRT screen using the rear-panel degaussing switch. In extreme cases of magnetism, it may be necessary to degauss the CRT using a conventional external television-type degaussing coil.

Adjustment Personnel

It is recommended that these adjustments be performed only by qualified personnel who are familiar with color CRT convergence procedures.

Equipment Required

The instrument firmware supplies the display patterns necessary for adjustment. The only tool required is a nonmetallic adjustment tool:

• Sony Part Number 4-367-065-01

• HP Part Number 8710-1355

4–2

Calibrating and Adjusting

To prepare the instrument

1 Remove the rear feet and the covers from the mainframe. 2 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.

During any of the following CRT adjustments, the CRT module must face west.

3 4 Use the following chart to guide you with the CRT adjustment procedure.

The following CRT adjustments are broken down into adjustment groups. The adjustment group sequence must be followed in order because of interaction and dependency. The adjustment group sequence is shown in the adjustment flow diagram below. There will be cases where not all of the adjustments groups will be used. For example, if the Geometry Adjustment Group corrects the problem, this will be the only group used.

Colo r CRT Mod ule Adju stme nt Flow Diag ram

4–3

Calibrating and Adjusting

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.

2 Touch the field near the center of the screen to load the Test System. 3 In the Test System Configuration menu, touch Test System, then select Mainframe

Test in the pop-up menu.

The screen displays the Mainframe Test menu.

4 Touch the Color Display Test field to display the first test pattern, which is the

white, cross-hatch pattern.

5 Touch Continue to see the next test pattern.

With every touch of the Continue field, the next test pattern will be displayed. When Continue is selected from the black raster pattern, the Mainframe Test menu will be displayed. Notice that the status of the Display field changes to Tested.

To exit the test system, touch the Mainframe Test field, then touch the Test System.

Touch Configuration, select test, then touch the field near the center of the screen to exit the test system.

4–4

Calibrating and Adjusting

To adjust geometry

1 Display the white cross-hatch test pattern on the CRT.

From the Color Display Test menu, select the white, cross-hatch pattern.

2 Preset the front panel brightness control, the top of the two controls to the left of

the display, maximum clockwise.

3 Preset the front panel contrast control, the bottom of the two controls to the left of

the display, to the mechanical center.

4 Preset H.SUB SHIFT (RV006) and V.SUB SHIFT (RV008), located on the bottom PC

board, to the mechanical centers.

All of the following adjustment potentiometers are located on the PC board on the left side of the display.

Adjust the display size. Measure with a flexible ruler.

Adjust H.SIZE (RV504) for a 161 mm (6.34 in.) width.

•

Adjust V.HEIGHT (RV50) for a 120.5 mm (4.74 in.) height.

•

Center the pattern.

Adjust V.CENT (RV510) for vertical centering.

•

Adjust H.CENT (RV503) for horizontal centering.

•

Adjust PIN AMP (RV506) to eliminate pincushion distortion in the vertical lines of

the cross-hatch pattern as shown in the next figure.

8 Remove the left, bottom rail of the mainframe.

The left, bottom rail must be removed in order to access the next adjustment.

9 Adjust PIN PHASE (RV505) to eliminate pin phase distortion in the vertical lines of

the cross-hatch pattern as shown in the next figure.

10 Reinstall the bottom rail. 11 Adjust TOP PIN (RV511) so that the top horizontal line is parallel with the center

horizontal line.

12 Adjust BOTTOM PIN (RV512) so that the bottom horizontal line is parallel with the

center horizontal line.

4–5

Calibrating and Adjusting

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.

1 2 Remove the rear and side fans.

Refer to chapter 6, "Replacing Assemblies."

Focus Adjustment

Geometry adjustments must be performed before making the focus adjustment.

Display the white, cross-hatch test pattern on the display.

From the Color Display Test menu, select the white, cross-hatch pattern.

2 Adjust FOCUS (RV701), located on the rear PC board, for best overall focus.

4–6

Calibrating and Adjusting

To adjust focus, landing, and convergence

Landing Adjustment

Turn the front panel BRIGHTNESS control fully clockwise.

1 2 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. In this case, to completely degauss the CRT you may need to use a conventional television-type degaussing coil.

Red

Green

Blue

Set the purity magnet tabs to the mechanical center. Refer to the next figure.

3 4 Display a green raster test pattern on the display.

From the Color Display Test menu, select the green raster. In the next steps, while moving the deflection yoke forward and rearward, rotate the yoke as

necessary to keep the edges of the raster parallel to the sides of the display.

Move the deflection yoke rearward until the left edge of the raster turns red and the

right side of the raster turns blue.

7 Adjust the purity magnets until green is in the center of the raster with red and blue

bands evenly distributed on the sides.

4–7

Purity control corrects this area

Deflection yoke position corrects these areas

Calibrating and Adjusting

To adjust focus, landing, and convergence

8 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).

10 If the landing is not correct in step 9, repeat steps 6 through 9 for the best

compromise.

11 If the landing is not correct in step 10, readjust purity magnets for best landing of

each color.

12 When the landing adjustment is complete, tighten the deflection yoke clamp screw

just enough to keep the yoke from moving. DO NOT over tighten or you might damage the CRT.

4–8

Calibrating and Adjusting

To adjust focus, landing, and convergence

Static Convergence

Temporarily disconnect the power from the instrument.

1 2 Remove the PC board shield cover from the rear of the Color CRT Module by prying

evenly on all four sides.

3 Reapply power. 4 Display the white, cross-hatch test pattern on the CRT.

From the Color Display Test menu, select the white, cross-hatch pattern.

5 Preset front panel brightness control, the top of the two controls to the left of the

display, maximum clockwise.

6 Preset front panel contrast control, the bottom of the two controls to the left of the

display, to the mechanical center.

7 Check the four dots which are located around the center intersection of the

cross-hatch pattern for coincidence of the blue, red, and green dots. If the dots are not coincident, adjust H.STAT (RV703) located on the rear PC board to obtain horizontal coincidence and V.STAT (RV803) located on the bottom PC board to obtain vertical coincidence.

V.STAT

Center dot

H.STAT

Due to interaction, the BEAM LANDING will need to be readjusted if either the H.STAT or V.STAT adjustments are made. Once the BEAM LANDING is re-adjusted, repeat step 7 above if necessary to obtain the center screen coincidence of the dots.

4–9

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.

2 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.

3 Adjust Y CROSS (RV804) located on the bottom PC board to eliminate red, green,

and blue orthogonal misalignment at the top and bottom of the center vertical line.

4–10

Calibrating and Adjusting

To adjust focus, landing, and convergence

4 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. Use the next two figures for V TOP and V BOTTOM respectively.

4–11

Calibrating and Adjusting

To adjust focus, landing, and convergence

5 Adjust H.AMP (RV807) located on the bottom PC board for equal amounts of

misconvergence at the right and left sides of the screen.

6 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.

7 If you are finished with the CRT adjustments, replace the fans.

If you need to adjust the white balance, which is the next procedure, you will replace the fans after completing that procedure.

4–12

Calibrating and Adjusting

To adjust white balance

1 Provide a blank display on the CRT.

From the Color Display Test menu, select a blank (colorless) raster.

2 Preset the front panel brightness and contrast controls to their mechanical centers. 3 On the bottom PC board, set the following adjustments to their mechanical centers.

SUB BRT (RV901)

•

SUB CONT (RV902)

•

4 On the bottom PC board, set the following adjustments to their mechanical centers.

G. DRIVE (RV921)

•

B. DRIVE (RV931)

•

R. DRIVE (RV911)

•

5 On the rear PC board, set the following adjustments fully counterclockwise.

G. BKG (RV721)

•

B. BKG (RV731)

•

R. BKG (RV711)

•

6 Adjust the SCREEN (RV702) located on the rear PC board until either the red, green,

or blue raster just starts to become visible. Note which color becomes visible first and do not adjust the background control (BKG) for that color in the next step.

7 Adjust the other two background controls for the best white balance. 8 From the Color Display Test menu, select the white raster test pattern. 9 Set the front panel brightness control to maximum.

10 On the bottom PC board, adjust the DRIVE controls (RV921, RV931 and RV911) for

the best white balance.

For a white balance reference, use an average piece of white photocopy paper and compare the white on the CRT to the paper.

Repeat steps 1-3 followed by 6-10 until satisfied with the white balance.

Essentially, from this point the procedure is as follows:

a With a blank screen, the front panel brightness set to center, and SCREEN (RV702) set

for minimum background, adjust the BKG controls (G.-RV721, B.-RV731, and R.-RV711) for the best white balance.

b With a white raster and the front panel brightness set to maximum, adjust the DRIVE

controls (G.-RV921, B.-RV931, and R.-RV911) for best white balance.

c Repeat until satisfied with the white balance.

Replace the side and rear fans.

Refer to chapter 6, "Replacing Assemblies."

4–13

4–14

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

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. The other tests are located in this chapter after the flowcharts.

The service strategy for this instrument is the replacement of defective assemblies. This instrument can be returned to Hewlett-Packard for all service work, including troubleshooting. Contact your nearest Hewlett-Packard Sales Office for more details.

CAUTION

Electrostatic discharge can damage electronic components. Use grounded wriststraps and mats when you perform any service to this instrument or to the cards in it.

To use the flowcharts

Flowcharts are the primary tool used to isolate defective assemblies. The flowcharts refer to other tests to help isolate the trouble. The circled letters on the charts indicate connections with the other flowcharts. Start your troubleshooting at the top of the first flowchart.

5–2

Troubleshooting

To use the flowcharts

Main Troubleshooting Flowchart 1

5–3

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.

Troubleshooting

To use the flowcharts

Main Troubleshooting Flowchart 2

5–4

Troubleshooting

To use the flowcharts

Color Module Troubleshooting Flowchart 3

5–5

Troubleshooting

To use the flowcharts

Color Module Troubleshooting Flowchart 3A (continued)

5–6

Troubleshooting

To use the flowcharts

Power-Up Troubleshooting Flowchart 4

5–7

Troubleshooting

To use the flowcharts

System Start Troubleshooting Flowchart 5

5–8

Troubleshooting

To use the flowcharts

Mainframe Tests Troubleshooting Flowchart 6

5–9

Troubleshooting

To use the flowcharts

Power Supply Troubleshooting Flowchart 7

5–10

Troubleshooting

To use the flowcharts

HIL Troubleshooting Flowchart 8

5–11

Troubleshooting

To use the flowcharts

Flexible Disk Drive Troubleshooting Flowchart 9

5–12

Troubleshooting

To use the flowcharts

Hard Disk Drive Troubleshooting Flowchart 10

5–13

Troubleshooting

To use the flowcharts

RS-232C Troubleshooting Flowchart 11

5–14

Troubleshooting

To use the flowcharts

Intermodule Troubleshooting Flowchart 12

5–15

Troubleshooting

To use the flowcharts

Expansion Frame Troubleshooting Flowchart 13

5–16

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

Troubleshooting

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" appears on the screen in front of the name of each test.

Disconnect all inputs, then insert a formatted disk into the flexible disk drive.

1 2 Let the instrument warm up for a few minutes, then cycle the power by turning off

and turning on the power switch.

If the instrument is not warmed up, the power-up test screen will complete before you can view the screen.

As the tests complete, check if they pass or fail, then return to the flowcharts.

The Flexible Disk Test reports No Disk if a disk is not in the disk drive. Refer to the tables below for the screen listing after the tests are complete and for power-up error messages.

Power-Up Self-Test Screen Listing

Performing Power-Up Self-Tests passed ROM Test passed RAM Test passed Interrupt Test passed Display Test passed HIL Controller Test passed Front-Panel Test passed Touchscreen Test passed Correlator Test passed Hard Disk Test passed Flexible Disk Test Loading Module Files

Error Messages at Power-Up

Message Cause Remedy

FATAL ERRORS ENCOUNTERED, BOOT HALTED

SYSTEM DISK NOT FOUND The mainframe operating system

Touchscreen power-up test impaired

A power-up test failed. Follow the troubleshooting

flowcharts.

Install the operating system cannot be found on the hard disk drive.

The touchscreen operation is impaired.

software onto the hard disk drive.

Follow the troubleshooting

flowcharts. The touchscreen might

still operate with a minimal loss of

functionality.

See Also "The Power-Up Routine" in chapter 8.

5–18

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.

If you did not just do the power-up self-tests, disconnect all inputs, then turn on the power switch. Wait until the power-up tests are complete.

2 In the System Configuration menu, select Configuration, then select Test.

Troubleshooting

To run the self-tests

3 Select the box labeled Load Test System. 4 Select Test System, then select Mainframe Test from the pop-up menu.

5–19

Troubleshooting

To run the self-tests

5 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.

To run a test continuously, select Repetitive. Select Stop to halt a repetitive test.

For a Single run, the test runs one time, and the screen shows the results.

5–20

Troubleshooting

To run the self-tests

7 To exit the ROM Test, select Done. Note that the status changes to Passed or Failed.

8 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. Run the remaining All System Tests in the same manner.

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.

Exit the mainframe tests.

a Select Done from any test screen.

b Select Mainframe Test, then select Test System in the pop-up menu.

c Select Configuration, then select Exit Test in the pop-up menu.

d Select the box near the center of the screen to exit the test system.

If you are performing the self-tests as part of the troubleshooting flowchart, return

to the flowchart.

5–21

WARNING

Troubleshooting

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 procedure is to be performed by service-trained personnel aware of the hazards involved, such as fire and electrical shock.

Turn off the instrument, then remove the bottom cover.

1 2 On the color assembly, disconnect the cable that connects the microprocessor

board to the color display assembly.

3 Turn on the instrument, then wait for it to power up. 4 Probe the cable for the horizontal sync, vertical sync, and display data signals.

The horizontal and vertical sync signals are TTL levels that resemble the figure. The display data signals have a baseline of approximately −1.7 V and vary in amplitude from

the baseline voltage to approximately 125 mV, depending on the characteristics of the colors displayed.

Reconnect the cable, then return to the color display assembly flowchart.

Vertical

Horizontal

Cable Pin Numbers

Pin Numbers Signal

3 Vertical Sync

7 Horizontal Sync

21 Red Display Data

29 Green Display Data

37 Blue Display Data

Sync Signals

5–22

WARNING

To check the power supply LEDs

Refer to chapter 6, "Replacing Assemblies," for instructions to remove or replace covers and assemblies.

Turn off the instrument, then remove the top cover.

1 2 Apply power to the instrument. 3 Check the power supply LEDs. 4 Note problems with the power supply, then return to the power supply flowchart.

Troubleshooting

5–23

WARNING

Troubleshooting

To check the power supply voltages

Refer to chapter 6, "Replacing Assemblies," for instructions to remove or replace covers and assemblies.

Turn off the instrument, disconnect the power cord, then remove the top cover.

1 2 Apply power to the instrument. 3 Using a DVM, measure the power supply voltages. 4 Note problems with the power supply, then return to the power supply flowchart.

Power Supply Voltages

Pin Supply/Signal Voltage Pin Supply/Signal Voltage

1-5 5 volt +5 V 21 Ground sense 0 V

6 +5 volt remote sense +5 V 22 Power valid +5 V

7-9 +3.5 volt +3.5 V 23

10 +3.5 volt remote sense +3.5 V 24-30

11 +12 volt +12 V 31

13 Not connected 33-37

14-20 Ground 0 V 38 Remote on/off +12 V

−12 volt −12 V

−3.25 volt remote sense −3.25 V

−3.25 volt −3.25 V

−5.2 volt current limit

−5.2 volt remote sense −5.2 V

−5.2 volt −5.2 V

+2.5 V

5–24

WARNING

Troubleshooting

To test the flexible disk drive voltages

Refer to chapter 6, "Replacing Assemblies," for instructions to remove or replace covers and assemblies.

Equipment Required

Equipment Critical Specification Recommended

Model/Part

Digitizing Oscilloscope > 100 MHz Bandwidth HP 54600A

1 Turn off the instrument, then remove the power cable. Remove the instrument

cover and the flexible disk drive.

2 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.

3 Connect the power cable, then turn on the instrument. 4 In the Mainframe Test menu, select the Flexible Disk Test. Insert a disk that has

enough available bytes to run the test in the disk drive, then select Run-Repetitive.

Refer to "To run the self-tests" in this chapter if you need help accessing the test menu.

5–25

Troubleshooting

To test the flexible disk drive voltages

5 Check for the following voltages and signals using an oscilloscope.

Disk Drive Voltages

Pin Signal

Description

1 NC 13 Ground 24 Write Gate

2 Disk Change 14 NC 25 Ground

3 NC 15 Ground 26 Track 00

4 High Density 16 Motor On 27 Ground

5 NC 17 Ground 28 Write Protect

6 NC 18 Direction 29 Ground

7 +5 V 19 Ground 30 Read Data

8 Index 20 Step 31 Ground

9 +5 V 21 Ground 32 Side Select

10 Drive Select 22 Write Data 33 Ground

11 +5 V 23 Ground 34 Ready

12 NC

Pin Signal

Description

Pin Signal Description

6 Select Stop, and turn off the logic analyzer. Remove the power cable. 7 Disconnect the disk drive cable and reinstall the disk drive in the mainframe. 8 Reconnect the disk drive cable and install the cover on the mainframe.

5–26

WARNING

Troubleshooting

To test the hard disk drive voltages

Refer to chapter 6, "Replacing Assemblies," for instructions to remove or replace covers and assemblies.

Equipment Required

Equipment Critical Specification Recommended

Model/Part

Digitizing Oscilloscope > 100 MHz Bandwidth HP 54600A

1 Turn off the instrument, then remove the power cable. Remove both the top and

bottom covers of the mainframe and set the mainframe on its side with the strap handle facing up.

2 If an HP 16500L module is installed, then remove it from the mainframe.

a 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.

Remove the four screws holding the hard disk drive and let the hard disk drive hang

by the power and the data cables. Do not let the hard disk drive contact the CPU board.

4 Connect the power cable and apply power to the mainframe. When the hard disk

drive begins spinning, ensure the disk drive does not contact the CPU board. When the mainframe has powered up, enter the Test System.

5 When the System Test menu appears, select Mainframe Test, then select Disk Test.

When the disk test menu appears, select Run-Repetitive.

6 Using an oscilloscope, check for activity on the pins. Probe the voltages on the hard

disk drive circuit board where the data cable connector is soldered. Pin 1 of the connector is marked on the circuit board and is on the side of the connector closest to the power cable.

5–27

Troubleshooting

To test the hard disk drive voltages

Disk Drive Voltages

Pin Signal Description Pin Signal Description Pin Signal Description

2 Ground 16 Data 30 Ground

3 Data 17 Data 31 Interrupt Request

4 Data 18 Data 32 NC

5 Data 19 Ground 33 Address

6 Data 20 (connector key pin) 34 NC

7 Data 21 NC 35 Address

8 Data 22 Ground 36 Address

9 Data 23

10 Data 24 Ground 38

11 Data 25

12 Data 26 Ground 40 Ground

13 Data 27 I/O Cycle Extend

14 Data 28 NC

Reset 15 Data 29 +5 V

Write Strobe 37 Register Select

Read Strobe 39 NC

7 If the hard disk drive signals appear as indicated, then the hard disk drive should be

replaced. If the signals do not appear, then either the data cable or the CPU board is suspect. J12 of the CPU board can be probed in the same manner as described above to check for the same signals.

8 Select Stop, and turn off the mainframe. Remove the power cable and replace the

faulty assembly.

9 Reassemble the mainframe.

5–28

WARNING

Troubleshooting

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. Isolation is done by using an oscilloscope to check activity on the address and data buses and the strobe signal lines.

Refer to chapter 6, "Replacing Assemblies," for instructions to remove or replace covers and assemblies.

Equipment Required

Equipment Critical Specification Recommended

Model/Part Number

Oscilloscope 100MHz Bandwidth HP 54600A

Before beginning this procedure, verify that the HP 16500L interface is properly installed and that the expansion frame interface card and interface cable are properly seated.

Set up the Expansion Frame

Remove power from the HP 16500B system and unplug the power cords from both the mainframe and the expansion frame.

2 Set the expansion frame on its side with the strap handle facing up. Remove the

bottom cover from the expansion frame.

3 Plug the power cords into both the mainframe and expansion frame, then apply

power.

4 In the System Configuration menu, select Configuration. Select Test , then touch the

box to load the test system.

5 Select Test, then select Mainframe Tests in the pop-up menu. Select Option Board

Tests, then select Run-Repetitive.

5–29

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.

U7 pins 11 through 18

•

U8 pins 2 through 9

•

U9 pins 5 through 9

•

If there is TTL activity on all of the pins indicated, then the signal paths from the mainframe CPU board and the end of the expansion frame interface card are considered working. Go to the next step.

If one or more of the signal lines do not show activity, then go to "Test the Mainframe CPU Board" on the next page.

2 With the oscilloscope probe still grounded to the expansion frame, probe the

following pins.

U7 pins 2 through 9

•

U8 pins 11 through 18

•

U9 pins 11 through 15

•

If all of the signal lines show TTL activity, then go to the next step. If one or more of the signal lines do not show TTL activity, then replace the

expansion frame interface board.

Bottom Side of Expansion Interface Card

5–30

To test the expansion frame interface

3 Remove the probe ground from the frame, and reattach the probe ground to the

metal portion of the expansion frame near the front panel.

4 Probe the following pins.

U1 pins 2 through 9

•

U2 pins 2 through 9

•

U3 pins 5 through 9

•

If all of the signal lines show TTL activity, then go to the next step. If one or more of the signal lines do not show TTL activity, then replace the

expansion frame interface board.

5 With the oscilloscope probe still grounded to the frame, probe the following pins.

U1 pins 11 through 18

•

U2 pins 11 through 18

•

U3 pins 11 through 15

•

If one or more of the signal lines do not show TTL activity, then replace the expansion frame interface board.

Troubleshooting

Bottom Side of Expansion Interface Card

5–31

Troubleshooting

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.

2 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.

3 Plug the power cords into both the mainframe and expansion frame, then apply

power.

4 In the System Configuration menu, select Configuration. Select Test, then touch the

box to load the test system.

5 Select Test, then select Mainframe Tests. Select Option Board Tests, then select

Run-Repetitive.

6 Ground the oscilloscope probe to the metal portion of the frame near the rear panel

of the mainframe and check for TTL activity on the following pins. Reference designator J10 is indicated on the bottom side of the CPU board.

J10 pins 11 through 18

•

J10 pins 21 through 28

•

J10 pins 48 through 50

•

If there is TTL activity on all of the pins indicated, then the mainframe CPU board is operational.

If one or more of the signal pins on the expansion frame interface board did not show TTL activity, then the HP 16500L or the interface cable are suspect. Using an ohm meter, check continuity of the interface cable.

If the interface cable is good, then replace the HP 16500L circuit board.

7 Remove power from the HP 16500B system, and unplug the power cords from both

the mainframe and expansion frame. Replace the faulty components, then reassemble the mainframe.

5–32

To remove and replace the

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 Color display assembly 6–19

To return assemblies 6–22

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.

WARNING

CAUTION

Hazardous voltages exist on the power supply, the CRT, and the CRT driver board. To avoid electrical shock, disconnect the power from the instrument before performing the following procedures. After disconnecting the power, wait at least six minutes for the capacitors on the power supply board and the CRT driver board to discharge before servicing the instrument. However, if the AC LED on the power supply has any illumination, a significant charge remains on the power supply capacitors.

Damage can occur to electronic components if you remove or replace assemblies when the instrument is on or when the power cable is connected. Never attempt to remove or install any assembly with the instrument on or with the power cable connected.

Replacement Strategy

These replacement procedures are organized as if disassembling the complete instrument, from the first assembly to be removed to the last. Some procedures say to remove other assemblies of the instrument, but do not give complete instructions. Refer to the procedure for that specific assembly for the instructions.

Electrostatic discharge can damage electronic components. Use grounded wriststraps and mats when performing any service to this logic analyzer.

Tools Required

#10, #15, #25 TORX screwdrivers #2 posidrive screwdriver 8-mm nut driver

6–2

Replacing Assemblies

To remove and replace optional modules or filler panels

1 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.

Starting from the top, loosen the thumb screws on filler panels and cards in the

mainframe or the expansion frame. Starting from the top, pull the cards and filler panels out.

All multicard modules will be cabled together. To prevent damage to the cables and connectors, pull all multicard modules out together.

To replace the modules, reposition all cards and filler panels so that the endplates

overlap properly.

4 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. Repeat for all cards and filler panels in a bottom to top order.

For correct air circulation, filler panels must be installed in all unused card slots. Correct air circulation keeps the instrument from overheating. Keep any extra filler panels for future use.

See Also Service Guides for each individual module.

6–3

Replacing Assemblies

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. The shielding braid helps the instrument meet EMI (electromagnetic interference) specifications.

Remove the four rear feet.

The screws connecting the feet to the frame are accessible through the holes in the end of the feet.

Remove the top and bottom covers.

To remove the covers, loosen the screw in the rear of the covers. If a captive screw was used, loosening the screw will pull the cover back. When the screw is completely loose from the frame, slide the cover off. To remove the bottom cover, turn the instrument on its side, then loosen the screw in the rear of the bottom cover.

Remove the side strap handle and side covers.

To remove the side strap handle, remove the two strap retaining screws. Slide the strap handle cover off.

Note that the handle is rounded on the side closest to the instrument. Reinstall the handle with the same side toward the instrument.

To remove a side cover, loosen the screw in the rear of the cover. (The side cover with a strap handle will not have a rear screw.) If a captive screw was used, loosening the screw will pull the cover back. When the screw is completely loose from the frame, slide the cover off.

Replace the covers by reversing this procedure.

6–4

Replacing Assemblies

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.

2 3 Slide the flexible disk drive assembly toward the rear panel until the assembly is out

of the instrument.

4 Disconnect the control cable for the disk drive. 5 Remove the mounting bracket from the bottom of the assembly. 6 Reverse this procedure to replace the flexible disk drive.

6–5

Replacing Assemblies

To remove and replace the power supply

WARNING

Hazardous voltages exist on the power supply. To avoid electrical shock, disconnect the power from the instrument before performing the following procedures. After disconnecting the power, wait at least six minutes for the capacitors on the power supply board to discharge before servicing the instrument. 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:

Top cover

•

Flexible disk drive assembly

•

Optional module card or filler panel in the top slot of the card cage

•

2 Remove the power supply rear panel. 3 Disconnect the color display to power supply cable from the power supply. 4 Remove the four power supply mounting screws. 5 Pull the power supply towards the rear panel of the mainframe until the power

supply disconnects from the mother board connector.

6 Lift the front end of the power supply and guide it out of the mainframe. 7 Reverse this procedure to install the replacement power supply.

Before pushing the power supply into place, make sure that it is properly aligned with the front connector of the mother board and with the rail guides of the card cage.

HP 16501A

Using previous procedures, remove the following assemblies:

Top cover

•

Optional module card or filler panel in the top slot of the card cage

•

Remove the power supply rear panel.

22 3 Remove the four power supply mounting screws. 4 Pull the power supply towards the rear panel of the expansion frame until the power

supply disconnects from the mother board connector.

5 Lift the front end of the power supply and guide it out of the expansion frame. 6 Reverse this procedure to install the replacement power supply.

Before pushing the power supply into place, make sure that it is properly aligned with the front connector of the mother board and with the rail guides of the card cage.

6–6

Replacing Assemblies

To remove and replace the power supply

6–7

Replacing Assemblies

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.

2 3 Remove the complete rear fan assembly from the rear panel of the instrument. 4 Disconnect the rear fan power cable. 5 Remove the rear fan mounting screws and remove the fan from the fan shroud. 6 Reverse this procedure to install the replacement rear fan.

Make sure that the fan power cable is dressed under and between the fans and that the cable polarity is observed.

6–8

Replacing Assemblies

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.

2 3 Reach through the top of the instrument and disconnect the fan power cable, then

remove the fan.

4 Reverse this procedure to install the replacement side fan.

Make sure that the fan power cable is dressed under and between the fans and that the cable polarity is observed.

6–9

Replacing Assemblies

To remove and replace the HP 16500L interface module

HP 16500B and HP 16500L

Using previous procedures, remove the following assemblies:

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.

3 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.

4 Remove the two screws connecting the HP 16500L interface module to the sheet

metal plate and the four screws connecting the HP 16500L interface module to the mainframe rear panel.

5 Slide the card out the back of the mainframe. 6 Insert the replacement card in the back of the mainframe, then install the screws

and connect the cables.

The module serial number is located on the module rear panel. If you need to keep the same serial number with your system, then remove the rear panel from the old interface module and install it on the replacement module. The module rear panel is connected to the module circuit board with four screws.

6–10

Replacing Assemblies

To remove and replace the HP 16500L interface module

7 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. They only fit into the ports on the cards when oriented to match the shape of the ports.

When reconnecting the interface cable, make sure the cable connector is properly seated into the port on the expansion interface card by pulling the cable connector without pressing the release tabs. If the connector is properly seated, it will remain connected to the port.

6–11

Replacing Assemblies

To remove and replace the hard disk drive

HP 16500B

Using previous procedures, remove the following assemblies:

Top and bottom covers

•

HP 16500L interface module

•

2 Reaching in from the top of the instrument, remove the four screws connecting the

hard disk drive to the bracket.

3 Reaching in from the bottom of the instrument, remove the hard disk drive. 4 Disconnect the two cables from the hard disk drive to the CPU board. 5 Reverse this procedure to install the replacement hard disk drive.

Verify that the jumper on the underside of the hard disk is in the E1 position.

The replacement hard disk might be fastened to a mounting bracket when received. Before installing the hard disk, remove the mounting bracket If the replacement hard disk is an exchange assembly, attach the mounting bracket to the faulty disk drive before returning it to Hewlett-Packard. If the replacement disk drive is a new assembly, discard the mounting bracket.

6–12

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

•

2 Disconnect the cables from the microprocessor board. 3 Remove the two screws connecting the microprocessor to the rear panel. 4 Carefully slide the microprocessor board out of the mainframe. 5 Reverse this procedure to install the replacement microprocessor board.

Replacing Assemblies

6–13

Replacing Assemblies

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.

3 Reverse this procedure to install the replacement SIMM.

Slide the SIMM module into the connector at an angle, then push it down parallel to the microprocessor board.

6–14

Replacing Assemblies

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

•

2 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.

3 Disconnect the two cables on the expansion interface board. One cable is

connected to the front-panel LED and one cable is connected to the mother board.

4 Remove the two screws connecting the expansion interface board to the rear panel

of the expansion frame.

5 Carefully slide the expansion interface board out of the expansion frame. 6 Reverse this procedure to install the replacement expansion interface board.

In order to ensure correct connection of the interface cable, the 68-pin "D" connectors on the cable are asymmetric in shape. They only fit into the ports on the boards when oriented to match the shape of the ports.

When reconnecting the interface cable, make sure the cable connector is properly seated into the port on the expansion interface board by pulling the cable connector without pressing the release tabs. If the connector is properly seated, it will remain connected to the port.

6–15

Replacing Assemblies

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

•

2 Set the frame so that the bottom of the frame is facing up. This is to gain access to

the fan power cable and the front-panel cable.

3 Disconnect the fan power cable and the front-panel cable from the mother board. 4 Remove the six mother board mounting screws, then lift the mother board out of the

mainframe.

5 Reverse this procedure to install the replacement mother board.

HP 16501A

1 Using previous procedures, remove the following assemblies:

Top and bottom covers

•

Power supply

•

Expansion interface board

•

All optional modules and filler panels

•

Set the frame so that the bottom of the frame is facing up. This is to gain access to

the fan power cable and the front-panel cable.

3 Disconnect the fan power cable from the mother board. 4 Remove the six mother board mounting screws, then lift the mother board out of the

expansion frame.

5 Reverse this procedure to install the replacement mother board.

6–16

Replacing Assemblies

To remove and replace the mother board

6–17

Replacing Assemblies

To remove and replace the front-panel board

HP 16500B

Remove the top trim from the front frame.

1 2 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.

Remove the screws connecting the front-panel assembly to the top and bottom of

the frame.

4 Remove the front-panel assembly by pushing on the back of the assembly from

inside the instrument.

5 Carefully remove the shield from the assembly.

The shield is very fragile and must be replaced if it is bent or damaged in any way.

6 Remove the bezel from the front-panel board. 7 Remove the RPG knob and the two CRT control knobs by pulling them away from

the front-panel.

8 Remove the screws connecting the front-panel board to the front-panel, then remove

the front-panel board.

9 Reverse this procedure to install the replacement front-panel board.

6–18

Replacing Assemblies

To remove and replace the color display assembly

HP 16500B

The color display assembly replacement procedure consists of three sections:

Removing the assembly from the mainframe. Transferring parts to the replacement assembly. Installing the assembly in the mainframe.

Removing the color display assembly from the mainframe

Using previous procedures, remove the following assemblies:

All covers

•

Front-panel assembly

•

2 Disconnect the color display to microprocessor cable from the microprocessor

board. 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.

4 Remove the screws that connect the color display to the top and bottom of the front

frame.

5 Remove the screws that connect the center board guide to the front frame. Move

the sheet metal nuts, located on the center board guide, so that the display assembly can clear the mainframe.

6 Slide the complete color display assembly forward out of the mainframe. To prevent

damage to the assembly cables, make sure that they also clear the frame.

6–19

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.

2 Attach the rear support bracket to the replacement assembly, using the two

thread-forming screws. Do not overtighten.

3 Attach the frame mounting bracket to the rear support bracket. Install the hardware

in the following sequence: screw, flat washer, rubber washer. Do not tighten the hardware.

4 Remove the four bracket nuts connecting the front mounting brackets to the old

assembly, then remove the front mounting brackets. Reinstall the bracket nuts on the old assembly.

5 Remove the four bracket nuts from the replacement assembly. Using the four

bracket nuts, install both front mounting brackets on the replacement display assembly. The upper bracket is identified by the notch on one edge.

6 Disconnect the flat microprocessor cable, the power cable, and the front-panel

control cable from the old assembly, noting the location of the cables. Connect the cables to the replacement assembly.

6–20

Replacing Assemblies

To remove and replace the color display assembly

Installing the replacement color display assembly

Carefully slide the color display assembly 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 assembly completely into the mainframe.

3 Attach the display assembly to the front frame with four screws (two on the top

casting and two on the bottom casting). Do not tighten the screws.

4 Move the sheet metal nuts, located on the front tabs of the center board guide, so

that the holes in the sheet metal nuts and the tabs line up. Attach the front tabs of the center board guide to the front frame.

5 Reinstall the front-panel assembly, connecting the front-panel cables. Make sure the

front-panel assembly is properly seated before tightening the hardware.

6 Push the display assembly forward, until it is properly seated against the front-panel

assembly. Tighten the four display assembly mounting screws in the front frame.

7 Attach the rear mounting bracket of the display assembly to the side frame, then

tighten the mounting bracket screws. To prevent damage to the rubber washers, do not overtighten the screws.

8 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.

6–21

CAUTION

Replacing Assemblies

To return assemblies

Before shipping the logic analysis system or assemblies to Hewlett-Packard, contact your nearest Hewlett-Packard sales office for additional details.

Write the following information on a tag and attach it to the part to be returned.

Name and address of owner

•

Model number

•

Serial number

•

Description of service required or failure indications

•

2 Remove accessories from the logic analysis system.

Only return accessories to Hewlett-Packard if they are associated with the failure symptoms.

3 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 material.

Seal the shipping container securely, and mark it FRAGILE.

6–22

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

This chapter contains information for identifying and ordering replaceable parts for your logic analysis system.

Replaceable Parts Ordering

Parts listed

To order a part on the list of replaceable parts, quote the Hewlett-Packard part number, indicate the quantity desired, and address the order to the nearest Hewlett-Packard Sales Office.

Parts not listed

To order a part not on the list of replaceable parts, include the model number and serial number of the module, a description of the part (including its function), and the number of parts required. Address the order to your nearest Hewlett-Packard Sales Office.

Direct mail order system

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 handling charge for each order) and there are no invoices.

In order for Hewlett-Packard to provide these advantages, a check or money order must accompany each order. Mail order forms and specific ordering information are available through your local Hewlett-Packard Sales Office. Addresses and telephone numbers are located in a separate document at the back of the Service Guide.

Exchange Assemblies

Some assemblies are part of an exchange program with Hewlett-Packard. The exchange program allows you to exchange a faulty assembly with one that has been repaired and performance verified by Hewlett-Packard.

After you receive the exchange assembly, return the defective assembly to Hewlett-Packard. A United States customer has 30 days to return the defective assembly. If you do not return the defective assembly within the 30 days, Hewlett-Packard will charge you an additional amount. This amount is the difference in price between a new assembly and that of the exchange assembly. For orders not originating in the United States, contact your nearest Hewlett-Packard Sales Office for information.

See Also "To return assemblies" in chapter 6.

7–2

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:

Reference designator

•

Hewlett-Packard part number

•

Total quantity included with the instrument (Qty)

•

Description of the part

•

Reference designators used in the parts list are as follows:

A Assembly

•

E Miscellaneous Electrical Part

•

F Fuse

•

H Hardware

•

MP Mechanical Part

•

W Cable

•

Replaceable Parts

7–3

HP 16500B User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual