Page 1 Addenda #1, 2, and 3 to Compaq Professional Workstation AP550 Maintenance & Service Guide Compaq Professional Workstation AP550 Part number 135618-003 Spare part number 158279-001 The complete MSG follows these addenda. These addenda contain changes to the original document. 2000 Compaq Computer Corporation. All rights reserved. Compaq is registered in the U.
Page 2 Spare Part Numbers Description Intel Pentium III processor with heatsink (154293-001) and clip (120891-001) 600 MHz/133-MHz 800 MHz/133-MHz 867 MHz/133-MHz Intel Pentium III processor with heatsink (210720-001), air bafle (167373-001) and clip (120891-001) 1 GHz/133 MHz Memory Modules 64-MB ECC Direct Rambus Inline Memory Module (RIMM) 800-MHz 512-MB ECC (100-MHz SDRAM) Graphics Controllers...
Page 3 Spare Part Numbers (continued) Description Fast Ethernet NIC PCI, 10/100, Wake-On-LAN NIC 10/100 PCI card with Wake-On/Alert-On LAN Miscellaneous Cable Kit CD-ROM data, 12.5” (179048-001) CD-ROM data, 12.5” (105876-001) Diskette drive, 15.5” (179049-001) CD-ROM audio, 12” (288489-001) Thermal sensor (166785-001) Hard drive/CD-ROM drive data, 14”...
Page 4 Specifications – Graphics Controllers Matrox MGA-G400A Graphics Controller Graphics memory Color palette* 64 K colors (16-bit) 16 MB 16 M colors (32-bit) 64 K colors (16-bit) 32 MB 16 M colors (32-bit) * 3D acceleration is only available with a 16- or 32-bit color palette. Intense3D Wildcat 4110 Graphics Controller Supported Resolutions Without Multisampling Aspect Ratio...
Page 5 Specifications – Graphics Controllers (continued) Intense3D Wildcat 4210 Graphics Controller Supported Resolutions Without Multisampling Aspect Ratio 4 x 3 5 x 4 16 x 9 16 x 10 5 x 4 Frame Sequential Stereo 4 x 3 Frame Sequential Stereo Supported Resolutions with Multisampling Aspect Ratio 4 x 3...
Page 6 Specifications – Graphics Controllers (continued) Matrox G200 Quad MMS Graphics Controller Graphics Memory Aspect Ratio 32 MB 4:3/5:4 32 MB 16:9/16:10 ELSA Gloria II AGP Graphics Controller Graphics Maximum Colors Memory Supported 64 MB 16.7M * Refresh rate may function but may not be officially supported by Compaq. Addenda to MSG 135618-001 Refresh Rate/Display Resolution...
Page 7 Air Baffle Assembly 135618-001 7...
Page 8 Compaq Professional Workstation AP550 Maintenance and Service Guide...
Page 9 Professional Workstation AP550 Maintenance and Service Guide First Edition (October 1999) Part Number 135618-001 Spare Part Number 158279-001 Compaq Computer Corporation...
Page 10 Notice The information in this publication is subject to change without notice. COMPAQ COMPUTER CORPORATION SHALL NOT BE LIABLE FOR TECHNICAL OR EDITORIAL ERRORS OR OMISSIONS CONTAINED HEREIN, NOR FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING FROM THE FURNISHING, PERFORMANCE, OR USE OF THIS MATERIAL.
Page 11: Table Of Contents
About This Guide Symbols in Text ...vii Compaq Technician Notes ...viii Where to Go for Additional Help ...ix Telephone Numbers...ix Chapter 1 Illustrated Parts Catalog Overview... 1-2 Mechanical Parts... 1-2 System Components ... 1-3 Spare Parts List ... 1-4 Mechanical Components... 1-4 System Components ...
Page 12 System Board Fan ... 3-47 Power Supply ... 3-48 Power Switch ... 3-50 System Board ... 3-51 I/O Panel ... 3-53 Lithium Battery ... 3-54 Converting a Minitower to a Desktop Configuration ... 3-56 Converting a Desktop to a Minitower Configuration ... 3-59...
Page 13 Chapter 4 Diagnostic Tools Overview... 4-1 Power-On Self-Test (POST) ... 4-2 POST Messages ... 4-3 Troubleshooting Minor Problems ... 4-9 Power Problems ... 4-10 Diskette Drive Problems ... 4-11 Display Problems... 4-12 Printer Problems ... 4-13 Hard Drive Problems ... 4-14 Hardware Installation Problems...
Page 14 vi Compaq Professional Workstation AP550 Maintenance and Service Guide Chapter 6 Jumper and Switch Information Overview... 6-1 Mass Storage ... 6-3 9.1-GB Ultra3 SCSI Hard Drive... 6-3 18-GB Ultra3 SCSI Hard Drive... 6-4 CD-ROM or DVD-ROM Drive ... 6-5 Zip Drive... 6-5 Chapter 7 Physical and Operating Specifications Overview...
Page 15: About This Guide
This maintenance and service guide is a troubleshooting guide that can be used for reference when servicing Compaq Professional Workstation AP550. WARNING: To reduce the risk of personal injury from electrical shock and hazardous energy levels, only authorized service technicians should attempt to repair this equipment. Improper repairs could create conditions that are hazardous.
Page 16: Compaq Technician Notes
viii Compaq Professional Workstation AP550 Maintenance and Service Guide Compaq Technician Notes WARNING: Only authorized technicians trained by Compaq should attempt to repair this equipment. All troubleshooting and repair procedures are detailed to allow only subassembly/module level repair. Because of the complexity of the individual boards and subassemblies, no one should attempt to make repairs at the component level or to make modifications to any printed wiring board.
Page 17: Where To Go For Additional Help
Where to Go for Additional Help In addition to this guide, the following information sources are available: User documentation Compaq Service Quick Reference Guide Service Training Guides Compaq Service Advisories and Bulletins Compaq QuickFind Compaq Insight Manager Workstation Reference Library CD NOTE: The Workstation Reference Library CD contains detailed product information on the graphics controller, certain options, and the safety and comfort guide.
Page 18: Illustrated Parts Catalog
Chapter Illustrated Parts Catalog This chapter provides an illustrated parts breakdown and a reference for spare parts for the Compaq Professional Workstation AP550.
Page 19: Overview
1-2 Compaq Professional Workstation AP550 Maintenance and Service Guide Overview Mechanical Parts Figure 1-1. Exploded view for the Compaq Professional Workstation AP550 mechanical parts...
Page 20: System Components
Illustrated Parts Catalog 1-3 System Components Figure 1-2. Exploded view for the Compaq Professional Workstation AP550 system components...
Page 21: Spare Parts List
1-4 Compaq Professional Workstation AP550 Maintenance and Service Guide Spare Parts List Mechanical Components Figure 1-3. Mechanical components for the Compaq Professional Workstation AP550 Item Description Workstation access panel Chassis Front bezel Note: Parts or components marked with an asterisk (*) are not illustrated. Table 1-1 Mechanical Components Spare Parts List Spare Part #...
Page 22: System Components
System Components Figure 1-4. System components for the Compaq Professional Workstation AP550 Item Intel Pentium III Processor, 600EB-MHz with a 133-MHz front-side bus Intel Pentium III Processor, 733-MHz with a 133-MHz front-side bus Battery System board for the Compaq Professional Workstation AP550 Terminator board for secondary processor slot Lock security bracket Loud speaker...
Page 23: Memory
1-6 Compaq Professional Workstation AP550 Maintenance and Service Guide Memory Figure 1-5. Memory for the Compaq Professional Workstation AP550 Item 64-MB ECC Direct Rambus Inline Memory Modules (RIMM) 600-MHz 64-MB ECC Direct Rambus Inline Memory Modules (RIMM) 800-MHz 128-MB ECC Direct Rambus Inline Memory Modules (RIMM) 600-MHz 128-MB ECC Direct Rambus Inline Memory Modules (RIMM) 600-MHz 128-MB ECC Direct Rambus Inline Memory Modules (RIMM) 800-MHz 256-MB ECC Direct Rambus Inline Memory Modules (RIMM) 600-MHz...
Page 24: Mass Storage Devices
Mass Storage Devices Figure 1-6. Mass storage devices for the Compaq Professional Workstation AP550 Item Note: Parts or components marked with an asterisk (*) are not illustrated. Table 1-4 Mass Storage Device Spare Parts List Description DVD-ROM drive (6X is available on select models) 9-GB Ultra3 SCSI hard drive (10,000 rpm) 18-GB Ultra3 SCSI hard drive (10,000 rpm) 10-GB Ultra ATA/66 IDE hard drive (7,200 rpm)
Page 25: Cable Kits
1-8 Compaq Professional Workstation AP550 Maintenance and Service Guide Cable Kits Figure 1-7. Cable kits for the Compaq Professional Workstation AP550 Item Miscellaneous Cable Kit (166838-001, 288489-002, 247116-001, 242947-001) SCSI LVD 3-device twisted pair cable Serial port cover connector NIC Wake-on-LAN cable Power cord Video cable, 60 POS Note: Parts or components marked with an asterisk (*) are not illustrated.
Page 26: Graphic Controllers
Graphic Controllers Figure 1-8. Graphic controllers for the Compaq Professional Workstation AP550 Item Note: Parts or components marked with an asterisk (*) are not illustrated. Table 1-6 Graphics Controllers Spare Parts List Description Matrox Productiva G100 Multi-Monitor Matrox G400 16-MB 4X AGP (2D) ELSA Synergy II 32-MB 4X AGP (entry-3D) 3Dlabs Oxygen GVX1 AGP (mid-3D) 3Dlabs Oxygen GVX1 PCI (mid-3D)
Page 27: Network Controllers
1-10 Compaq Professional Workstation AP550 Maintenance and Service Guide Network Controllers Figure 1-9. Network controllers for the Compaq Professional Workstation AP550 Item Compaq NC3121 Fast Ethernet NIC PCI, 10/100, Wake-on-LAN Netelligent 16/4 TR PCI UTP/STP Controller Compaq NC3120 Fast Ethernet NIC PCI, 10/100 Compaq NC3123 Fast Ethernet NIC PCI, 10/100, Wake-on-LAN Note: Parts or components marked with an asterisk (*) are not illustrated.
Page 28: Input/Output Devices
Input/Output Devices Item Keyboard and Mouse Keyboard, space saver 3-button mouse Spaceball 4000 3D motion control input device (optional) Monitors P1610 color monitor (Beach) P1610 color monitor (Opal) P110 monitor TFT5000 flat panel monitor TC099 opal, touch screen, NA TFT8000 flat panel monitor Opal, without protective panel, TC095,WW TFT8000 flat panel monitor Opal, with protective panel, TC095,WW TFT8000 flat panel monitor Carbon, without protective panel, TC095,WW TFT8000 flat panel monitor Carbon, with protective panel, TC095,WW...
Page 29: Software And Miscellaneous
1-12 Compaq Professional Workstation AP550 Maintenance and Service Guide Software and Miscellaneous Item Software Microsoft Windows NT Workstation 4.0 CD Miscellaneous 3.5- to 5.25-inch diskette drive mounting bracket with screws and brace for use in bay 3 only 3.5- to 5.25-inch hard drive mounting bracket 3.5- to 5.25-inch ½...
Page 30: Service Preliminaries
Chapter Service Preliminaries Overview This chapter identifies the following service considerations: Preliminary warnings and cautions Electrostatic discharge information Equipment symbols Tools and software requirements Warranty information IMPORTANT: Adherence to the procedures and precautions described in this chapter is essential for proper service.
Page 31: Preliminary Warnings And Cautions
2-2 Compaq Professional Workstation AP550 Maintenance and Service Guide Preliminary Warnings and Cautions The following should be noted when operating or servicing the Compaq Professional Workstation AP550: WARNING: To reduce the risk of electric shock or damage to the equipment: If the system has multiple power supplies, disconnect power from the system by unplugging all power cords from the power supplies.
Page 32: Electrostatic Discharge Information
Electrostatic Discharge Information A discharge of static electricity can damage static-sensitive devices or microcircuitry. Proper packaging and grounding techniques are necessary precautions to prevent damage. To prevent electrostatic damage: Transport products in static-safe containers such as conductive tubes, bags, or boxes. Keep electrostatic-sensitive parts in their containers until they arrive at static-free stations.
Page 33: Tools And Software Requirements
2-4 Compaq Professional Workstation AP550 Maintenance and Service Guide Tools and Software Requirements To service the workstation, you might need the following: Torx T-10 screwdriver Torx T-15 screwdriver Flat-blade screwdriver Diagnostics diskette IMPORTANT: Before servicing the workstation, be sure that the drivers from the latest Compaq workstation SSD for Windows NT are installed.
Page 34: Removal And Replacement Procedures
Chapter Removal and Replacement Procedures Introduction This chapter provides subassembly/module-level removal and replacement procedures for the Compaq Professional Workstation AP550. After completing all necessary removal and replacement procedures, run the Compaq Setup and Diagnostics program to verify that all components are operating properly.
Page 35: Serial Number
3-2 Compaq Professional Workstation AP550 Maintenance and Service Guide Serial Number Provide the computer serial number to Compaq whenever you request information or order spare parts. The serial number is located on the top corner of the workstation 1 and on the rear of the chassis 2.
Page 36: Service Preparations
Service Preparations CAUTION: Electrostatic discharge can damage electronic components. Be sure you are properly grounded before beginning any installation procedure. See “Electrostatic Discharge Information” in Chapter 2 for more information. Before beginning any of the removal and replacement procedures, complete the following steps: 1.
Page 37: Workstation Access Panel
3-4 Compaq Professional Workstation AP550 Maintenance and Service Guide Workstation Access Panel To remove the workstation access panel (137384-001): 1. Perform the steps in the “Service Preparations” section as previously shown. CAUTION: Before removing the workstation access panel, ensure that the workstation is turned off, all cables are disconnected from the back of the workstation, and the power cord is disconnected from the grounded AC outlet 2.
Page 38 Removal and Replacement Procedures 3-5 3. Slide the workstation access panel back about 1 inch (2.5 cm), then lift it off the workstation. Figure 3-4. Removing the workstation access panel To replace the workstation access panel, reverse the above procedure.
Page 39: Front Bezel
3-6 Compaq Professional Workstation AP550 Maintenance and Service Guide Front Bezel To remove the front bezel (158278-001): 1. Perform the steps in the “Service Preparations” section as previously shown. CAUTION: Before removing the workstation access panel, ensure that the workstation is turned off, all cables are disconnected from the back of the workstation, and the power cord is disconnected from the grounded AC outlet.
Page 40: Subpanel And Bezel Blanks
NOTE: The subpanel and bezel blanks must be removed from the front bezel if you are installing a mass storage device for the first time, or if you are converting the unit from a minitower to a desktop configuration or from a desktop to a minitower configuration.
Page 41 3-8 Compaq Professional Workstation AP550 Maintenance and Service Guide CAUTION: When replacing the subpanel, be sure the aligning pins and any remaining bezel blanks are in the proper orientation to prevent damage to the alignment pins. Figure 3-7. Identifying the subpanel keyed-alignment positions...
Page 42: Mass Storage Devices
Mass Storage Devices This section discusses removal and replacement procedures for the mass storage devices supported on the Compaq Professional Workstation AP550. Drive Positions The Compaq Professional Workstation AP550 can house up to five mass storage devices. The following illustration identifies the physical drive locations. See the table below for a list of recommended drive configurations.
Page 43 3-10 Compaq Professional Workstation AP550 Maintenance and Service Guide IMPORTANT: You must install guide screws to ensure that the drives line up correctly in the drive cage. Compaq has provided extra guide screws, installed in the front of the workstation chassis behind the front bezel.
Page 44: 3.5-Inch Hard Drive
3.5-Inch Hard Drive To remove a 3.5-inch hard drive: 1. Perform the steps in the “Service Preparations” section as previously shown. CAUTION: Before removing the workstation access panel, ensure that the workstation is turned off, all cables are disconnected from the back of the workstation, and the power cord is disconnected from the grounded AC outlet.
Page 45 3-12 Compaq Professional Workstation AP550 Maintenance and Service Guide 5. Raise the drivelock to unlock the hard drive. Figure 3-11. Releasing the hard drive by raising the drivelock 6. Hold the drivelock up while you push the drive from the rear and remove it from the front of the drive bay 1.
Page 46: 3.5-Inch Drive With 5.25-Inch Drive Adapter
To replace the 3.5-inch hard drive: 1. Install two guide screws on each side of the replacement drive, making sure the guide screws line up with the guide slots. 2. Slide the hard drive into the drive bay until it snaps into place. IMPORTANT: When installing a second Ultra ATA hard drive on the primary controller, you must use an 80-conductor Ultra ATA cable for optimal performance.
Page 47 3-14 Compaq Professional Workstation AP550 Maintenance and Service Guide 6. Hold the drivelock up while you push the drive from the rear and remove it from the front of the drive bay. Figure 3-14. Removing a 3.5-inch drive from a 5.25-inch drive bay...
Page 48 7. To remove the bracket brace from the top of the drive adapter, squeeze in on both sides of the brace 1, then rotate the brace up and out 2. 8. Remove the drive bezel 3. 9. Remove the screws that secure the hard drive to the drive adapter 4. 10.
Page 49: 5.25-Inch Drive
3-16 Compaq Professional Workstation AP550 Maintenance and Service Guide 5.25-Inch Drive To remove a 5.25-inch drive: 1. Perform the steps in the “Service Preparations” section as previously shown. CAUTION: Before removing the workstation access panel, ensure that the workstation is turned off, all cables are disconnected from the back of the workstation, and the power cord is disconnected from the grounded AC outlet.
Page 50 5. Raise the drivelock to unlock the drive. Figure 3-17. Releasing the hard drive by raising the drivelock 6. Hold the drivelock in its elevated position while you push the hard drive from the rear and remove it from the front of the drive bay. Figure 3-18.
Page 51: Installing Optional Scsi Devices
3-18 Compaq Professional Workstation AP550 Maintenance and Service Guide Installing Optional SCSI Devices Select models of the Compaq Professional Workstation AP550 have a preinstalled internal SCSI hard drive. You can install additional SCSI devices using the external SCSI connector located on the rear panel of the workstation.
Page 52 Table 3-2 Installing Optional SCSI Devices continued Guidelines Turn on all external SCSI device before turning on the power to the workstation. All SCSI hard drives must be either internal or external, but never both. Do not mix Wide-Ultra and narrow SCSI devices on the same SCSI chain or the same controller.
Page 53: Using The Multi-Mode (Scsi) Cable
3-20 Compaq Professional Workstation AP550 Maintenance and Service Guide Using the Multi-Mode (SCSI) Cable The workstation ships standard with a three-device multi-mode (SCSI) cable that supports both low voltage differential (LVD) and single ended (SE) devices and has a terminator 1 on one end.
Page 54: Drivelock
Drivelock The workstation chassis drivelocks secure the drives in both the minitower and desktop configurations. To remove the drivelocks: 1. Perform the steps in the “Service Preparations” section as previously shown. CAUTION: Before removing the workstation access panel, ensure that the workstation is turned off, all cables are disconnected from the back of the workstation, and the power cord is disconnected from the grounded AC outlet.
Page 55 3-22 Compaq Professional Workstation AP550 Maintenance and Service Guide To reinstall the drivelocks: 1. Insert the left side of the drivelock (with the rounded tabs) into the slots on the drive cage 1. 2. Place the washer on the middle tab on the underside of the drivelock. 3.
Page 56: Expansion Boards
Expansion Boards The following illustration identifies the physical location of expansion slots. All connectors populate full-length boards. See the corresponding table for component names. Figure 3-22. Overview of the expansion board slots Reference Table 3-3 Expansion Board Slots Description PCI expansion board slot PCI expansion board slot PCI expansion board slot PCI expansion board slot...
Page 57: Removing An Expansion Board
3-24 Compaq Professional Workstation AP550 Maintenance and Service Guide Removing an Expansion Board To remove an expansion board: 1. Perform the steps in the “Service Preparations” section as previously shown. CAUTION: Before removing the workstation access panel, ensure that the workstation is turned off, all cables are disconnected from the back of the workstation, and the power cord is disconnected from the grounded AC outlet.
Page 58: Installing An Expansion Board
Installing an Expansion Board If the expansion board comes with jumper or switch settings, be sure to follow the setting instructions that have been provided with the board. To install a PCI expansion board: 1. Turn off the workstation and disconnect the power cord from the grounded AC outlet and the back of the workstation.
Page 59 3-26 Compaq Professional Workstation AP550 Maintenance and Service Guide Refer to the following illustration to install a PCI expansion board. 1. Slide the expansion board into the expansion slot and press it firmly into place. Figure 3-25. Installing an expansion board IMPORTANT: When you install an expansion board, press firmly on the board so that the whole connector seats properly in the expansion board slot.
Page 60: Serial Port Cover Connector
AC outlet. 2. Remove the workstation access panel. 3. Rotate the workstation to the desktop position. 4. Unplug the serial port cover connector from the system board. Figure 3-26. Removing the serial port cover connector 5.
Page 61: Card Guide
3-28 Compaq Professional Workstation AP550 Maintenance and Service Guide Card Guide To remove the card guide: 1. Perform the steps in the “Service Preparations” section as previously shown. CAUTION: Before removing the workstation access panel, ensure that the workstation is turned off, all cables are disconnected from the back of the workstation, and the power cord is disconnected from the grounded AC outlet.
Page 62: Memory Modules
Memory Modules Overview The Compaq Professional Workstation AP550 supports the following memory modules: RIMMs—The workstation supports 600-MHz and 800-MHz Error Checking and Correcting (ECC) Direct Rambus Inline Memory Modules (RIMMs). Additional RIMMs are available to upgrade the memory. A maximum of 32-count Direct RDRAMs is supported.
Page 63: Rimm Slot Locations And Configurations
3-30 Compaq Professional Workstation AP550 Maintenance and Service Guide RIMM Slot Locations and Configurations Your workstation supports four RIMM sockets on two Dual Direct RDRAM channels. Both channels support 32-line cache, which stores prefetched information. A maximum of 32 Direct RDRAM devices is supported per channel.
Page 64: Removing And Installing Rimms
Removing and Installing RIMMs Important Guideline for RIMM Installation When installing RIMMs, you MUST follow these guidelines: Use only 64-, 128-, or 256-MB, 600-MHz or 800-MHz Error Checking and Correcting (ECC) RIMMs. Do not mix 600- with 800-MHz RIMMs. Do not exceed 32-count Direct RDRAM devices on each Direct Rambus channel.
Page 65 3-32 Compaq Professional Workstation AP550 Maintenance and Service Guide RIMM Removal To remove a RIMM memory module: IMPORTANT: Before installing additional RIMMs, read the previous section, “Important Guidelines for RIMM Installation.” 1. Perform the steps in the “Service Preparations” section as previously shown. CAUTION: Before removing the workstation access panel, ensure that the workstation is turned off, all cables are disconnected from the back of the workstation, and the power cord is disconnected from the grounded AC outlet.
Page 66 RIMM Installation To install a RIMM memory module: 1. Perform the steps in the “Service Preparations” section as previously shown. CAUTION: Before removing the workstation access panel, ensure that the workstation is turned off, all cables are disconnected from the back of the workstation, and the power cord is disconnected from the grounded AC outlet.
Page 67: Dimm Location And Configurations
3-34 Compaq Professional Workstation AP550 Maintenance and Service Guide DIMM Location and Configurations SDRAM Expansion Boards DIMM-based workstation models come with a synchronous dynamic random access memory (SDRAM) expansion boards installed that supports at least 64-megabyte of Error Checking and Correcting (ECC) Dual Inline Memory Modules (DIMMs).
Page 68: Removing And Installing Dimms
DIMM Pair Installation Pair 1 Pair 2 Removing and Installing DIMMs Important Guidelines for DIMM Installation When installing DIMMs, you MUST follow these guidelines: Use only 64-, 128-, 256-, or 512-MB, Registered 100-MHz Error Checking and Correcting (ECC) DIMMs. SDRAM expansion boards must be installed in pairs, populating the RIMM sockets in the following order: XMM1 and XMM3.
Page 69 3-36 Compaq Professional Workstation AP550 Maintenance and Service Guide Table 3-9 DIMM Guidelines continued DIMMs must be installed in pairs, alternating between the two SDRAM expansion boards. RIMMs and DIMMs can not be mixed on the same system board. CRIMMs (Continuity RIMM) must populate the empty RIMM sockets (XMM2 and XMM4).
Page 70 3. Press outward on both latches of the RIMM at the same time 1. This releases the SDRAM expansion board and pushes it partially out of the socket. 4. Lift the expansion board from the socket 2. Figure 3-31. Removing a SDRAM expansion board 5.
Page 71 3-38 Compaq Professional Workstation AP550 Maintenance and Service Guide CAUTION: When handling a SDRAM expansion board, be careful not to touch any of the contacts. Doing so may damage the module. 3. Insert the DIMM at a 25-degree angle 1 into the slot on the SDRAM expansion board, ensuring that it is fully inserted and properly seated.
Page 72 Removal and Replacement Procedures 3-39 Figure 3-33. Side access panel with stabilizer card 7. When attaching the workstation access panel, assure the SDRAM expansion board stabilizer card (attached to the side access panel) engages with the SDRAM expansion boards, holding the boards in an upright position. NOTE: The system recognizes memory upgrades and automatically reconfigures the workstation.
Page 73: Processor
3-40 Compaq Professional Workstation AP550 Maintenance and Service Guide Processor Removing a Processor WARNING: To reduce the risk of personal injury from hot surfaces, allow the internal system components to cool before touching. To remove the processor: 1. Perform the steps in the “Service Preparations” section as previously shown. CAUTION: Before removing the workstation access panel, ensure that the workstation is turned off, all cables are disconnected from the back of the workstation, and the power cord is disconnected from the grounded AC outlet.
Page 74: Installing An Additional Pentium Iii Processor
Installing an Additional Pentium III Processor You can upgrade the workstation to a multiprocessor system. When you install a second processor, it must be the same speed, cache size, and type as the existing processor. For comprehensive instructions on installing a second processor, refer to the installation card provided in the Processor Options Kit.
Page 75 3-42 Compaq Professional Workstation AP550 Maintenance and Service Guide 5. Pull out the retaining tabs on each side of the terminator board 1, and then lift the terminator board out of the socket 2. Figure 3-36. Removing the terminator board from the secondary processor slot Figure 3-37.
Page 76: Removing The Heatsink From The 733-Mhz Processor
Removing the Heatsink from the 733-MHz Processor WARNING: To reduce the risk of personal injury from hot surfaces, allow the internal system components to cool before touching. To remove the heatsink from the 733-MHz processor (163363-001): 1. Perform the steps in the “Service Preparations” section as previously shown. CAUTION: Before removing the workstation access panel, ensure that the workstation is turned off, all cables are disconnected from the back of the workstation, and the power cord is disconnected from the grounded AC outlet.
Page 77 3-44 Compaq Professional Workstation AP550 Maintenance and Service Guide 5. Lift the processor off the pins on the back of the heatsink to remove it from the heatsink 2. Figure 3-39. Removing the metal clip and processor from the heatsink To install a new processor/heatsink, reverse the above procedure.
Page 78: Processor Guide Rails (Urm)
Processor Guide Rails (URM) CAUTION: Static electricity can damage the electronic components of the workstation. Before beginning these procedures, be sure you are discharged of static electricity by briefly touching a grounded metal object. To remove the processor guide rails: 1.
Page 79: Speaker
3-46 Compaq Professional Workstation AP550 Maintenance and Service Guide Speaker To remove the speaker (158267-001): 1. Perform the steps in the “Service Preparations” section as previously shown. CAUTION: Before removing the workstation access panel, ensure that the workstation is turned off, all cables are disconnected from the back of the workstation, and the power cord is disconnected from the grounded AC outlet.
Page 80: System Board Fan
System Board Fan To remove the system board fan (158275-001): 1. Perform the steps in the “Service Preparations” section as previously shown. CAUTION: Before removing the workstation access panel, ensure that the workstation is turned off, all cables are disconnected from the back of the workstation, and the power cord is disconnected from the grounded AC outlet.
Page 81: Power Supply
3-48 Compaq Professional Workstation AP550 Maintenance and Service Guide Power Supply To remove the power supply (128399-001): 1. Perform the steps in the “Service Preparations” section as previously shown. CAUTION: Before removing the workstation access panel, ensure that the workstation is turned off, all cables are disconnected from the back of the workstation, and the power cord is disconnected from the grounded AC outlet.
Page 82 4. Remove the four external screws that secure the power supply to the back of the chassis 1. NOTE: The internal screw that secures the power supply to the side of the chassis may not need to be removed, only loosened. 5.
Page 83: Power Switch
3-50 Compaq Professional Workstation AP550 Maintenance and Service Guide Power Switch CAUTION: The power switch should not be removed from the switch holder. Doing so may damage the switch components. To remove the power switch and switch holder (166925-001): 1. Perform the steps in the “Service Preparations” section as previously shown. CAUTION: Before removing the workstation access panel, ensure that the workstation is turned off, all cables are disconnected from the back of the workstation, and the power cord is disconnected from the grounded AC outlet.
Page 84: System Board
AC outlet. 2. Remove the workstation access panel. 3. With the workstation in the desktop position, remove the speaker. 4. Remove all expansion boards. 5. Disconnect all cables that are attached to the system board.
Page 85 3-52 Compaq Professional Workstation AP550 Maintenance and Service Guide 8. Remove the retaining screws that secure the system board to the chassis 1. 9. Slide the board 1/2-inch toward the front of the chassis to clear the I/O panel connectors 2. 10.
Page 86: I/O Panel
I/O Panel To remove the I/O panel: 1. Perform the steps in the “Service Preparations” section as previously shown. CAUTION: Before removing the workstation access panel, ensure that the workstation is turned off, all cables are disconnected from the back of the workstation, and the power cord is disconnected from the grounded AC outlet.
Page 87: Lithium Battery
3-54 Compaq Professional Workstation AP550 Maintenance and Service Guide Lithium Battery NOTE: When replacing a battery, use a CR2032 or equivalent 3-volt lithium coin cell battery. WARNING: The system board contains a lithium-ion battery pack. There is a risk of fire and chemical burn if the battery pack is handled improperly.
Page 88 4. Lift the battery out of the holder. Figure 3-48. Removing the battery To replace the battery, slide the replacement battery into position with the positive side up. IMPORTANT: Positive polarity should be positioned up. NOTE: The battery holder automatically secures the battery in the proper position. Removal and Replacement Procedures 3-55...
Page 89: Converting A Minitower To A Desktop Configuration
3-56 Compaq Professional Workstation AP550 Maintenance and Service Guide Converting a Minitower to a Desktop Configuration To convert a minitower to a desktop configuration: 1. Perform the steps in the “Service Preparations” section as previously shown. CAUTION: Before removing the workstation access panel, ensure that the workstation is turned off, all cables are disconnected from the back of the workstation, and the power cord is disconnected from the grounded AC outlet.
Page 90 IMPORTANT: The diskette drive should always be placed in the bay nearest the top of the chassis in the desktop configuration for proper drive clearance and access. Figure 3-50. Installing a drive in the desktop configuration 8. Reconnect the power and data cables to the drives.
Page 91 3-58 Compaq Professional Workstation AP550 Maintenance and Service Guide Figure 3-51. Rotating the bezel blanks when converting a minitower 1 to a desktop 2 9. Gently pull the subpanel, with the bezel blank secured, away from the front bezel, remove, and rotate the bezel blank.
Page 92: Converting A Desktop To A Minitower Configuration
Converting a Desktop to a Minitower Configuration To convert a desktop to a minitower configuration: 1. Perform the steps in the “Service Preparations” section as previously shown. CAUTION: Before removing the workstation access panel, ensure that the workstation is turned off, all cables are disconnected from the back of the workstation, and the power cord is disconnected from the grounded AC outlet 2.
Page 93 3-60 Compaq Professional Workstation AP550 Maintenance and Service Guide 7. Rotate each drive clockwise 90 degrees, then reinstall it into the drive bay. When the drives are properly inserted, the drivelock will secure them. IMPORTANT: For proper placement within the chassis, the diskette drive should always be placed in bay three, the bay nearest the internal 3.5-inch drives.
Page 94 Figure 3-54. Rotating the bezel blanks when converting a desktop 1 to a minitower 2 10. Replace the subpanel and front bezel, ensuring the subpanel and front bezel align properly with the alignment tabs.
Page 95: Diagnostic Tools
Overview This chapter provides information on the following topics to assist you when servicing the Compaq Professional Workstation AP550: Power-On Self-Test (POST) Troubleshooting Minor Problems Computer Setup and Diagnostics Utilities Clearing Configuration Memory Diagnostic Utilities Error Codes ROMPaq Fault Management Compaq Insight Manager Compaq Management Agents for Workstations Compaq Restore CD...
Page 96: Power-On Self-Test (Post)
4-2 Compaq Professional Workstation AP550 Maintenance and Service Guide Power-On Self-Test (POST) POST is a series of diagnostic tests that runs automatically when the system is turned on. After the computer is turned on, POST checks the following assemblies to make sure that the computer system is functioning properly: Keyboard RIMMs...
Page 97: Post Messages
POST Messages An error message results if the POST encounters a problem. This test runs when the system is turned on, checking assemblies within the workstation and reporting any errors found. CAUTION: RIMMs can reach a temperature of 212 F (100 C) in a matter of minutes. Caution should be excised whenever removing or replacing these components.
Page 98 4-4 Compaq Professional Workstation AP550 Maintenance and Service Guide Table 4-1 POST Error Messages Error Code 162-System Options Error 162-System Options Not Set 163-Time & Date Not 164-Memory Size Error 201-Memory Error 202-Memory Type Mismatch continued Audible Beeps L=Long S=Short Probable Source of Problem No diskette drive or mismatch in drive type.
Page 99 Table 4-1 POST Error Messages continued Audible Beeps Error Code L=Long S=Short 207-ECC Corrected Single Bit Errors in Memory Module Socket(s) 212-Failed Processor 213-Incompatible Memory Module in Memory Module Socket(s) 214-Memory Device Failure. Error Code: XX Memory Module Sockets(s): XX 301-Keyboard Error None 303-Keyboard...
Page 100 4-6 Compaq Professional Workstation AP550 Maintenance and Service Guide Table 4-1 POST Error Messages Error Code 605-Diskette Drive Type Error 912-The computer cover has been removed since last system startup 1611-Fan failure detected. 1720-SMART Hard Drive detects imminent failure. 1721-SMART SCSI Hard Drive Detects Imminent Failure 1771-Primary Disk...
Page 101 Table 4-1 POST Error Messages continued Audible Beeps Error Code L=Long S=Short 1790-Disk 0 Failure None (Secondary) 1791-Disk 1 Failure None (Secondary) 1792-Secondary None Disk Controller Failure 1793-Secondary None Controller or Disk Failure XX000Y ZZ Parity None Check 2 Fixed Disk Parameter Table or BIOS Error System Halted Invalid Electronic...
Page 102 4-8 Compaq Professional Workstation AP550 Maintenance and Service Guide Table 4-1 POST Error Messages Error Code Audible 1800-Temperature alert 1801-Microcode Patch Error (RESUME = F1 KEY) * L = Long, S = Short continued Audible Beeps L=Long S=Short Probable Source of Problem 1L, 3S System ROM is bad;...
Page 103: Troubleshooting Minor Problems
Troubleshooting Minor Problems If minor hardware or software problems occur, refer to the following list for possible solutions before running any of the diagnostic utilities: Verify that the workstation is connected to a working grounded AC outlet. Is the workstation turned on and the power light illuminated? Check all cable connections.
Page 104: Power Problems
4-10 Compaq Professional Workstation AP550 Maintenance and Service Guide Power Problems Problem Computer will not turn on. Computer does not automatically display the date and time. Computer powered off automatically. Insufficient power to the components. CAUTION: If both power cables are not properly connected to the system board, damage to the system board could result.
Page 105: Diskette Drive Problems
Diskette Drive Problems Problem Diskette drive light stays on. Diskette drive cannot write to a diskette. Diskette drive cannot read a diskette. A problem has occurred with a disk transaction. Non-system disk message. Drive not found. Table 4-3 Solutions for Diskette Drive Problems Possible Solution Diskette could be installed incorrectly.
Page 106: Display Problems
4-12 Compaq Professional Workstation AP550 Maintenance and Service Guide Display Problems Problem Screen is blank. Graphics colors are wrong. Characters are dim. Monitor does not function properly when used with the energy saver features. Blurry display or requested resolution cannot be set. Table 4-4 Solutions for Display Problems Possible Solution...
Page 107: Printer Problems
Table 4-4 Solutions for Display Problems Problem The picture is broken up; it rolls, jitters, or blinks. Screen goes blank. Monitor overheats. Cursor will not move using the arrow keys on the numeric keypad. Printer Problems Problem Printer will not print. Printer will not turn on.
Page 108: Hard Drive Problems
4-14 Compaq Professional Workstation AP550 Maintenance and Service Guide Hard Drive Problems The information provided by the diagnostics test includes error code, system serial number, drive serial number, drive model, and drive firmware revision. Specific details of the drive failure are not included. When you run the diagnostics, the test results are stored in a log.
Page 109: Hardware Installation Problems
Hardware Installation Problems Problem A new device is not recognized as part of the computer system. Installed third-party hard drive adapter (SCSI and so on) is not participating in the Hard Drive Ordering option provided in F10 setup and/or is always coming up as the boot device regardless of the Hard Drive Ordering information.
Page 110: Dvd-Rom And Cd-Rom Drive (Ide) Problems
4-16 Compaq Professional Workstation AP550 Maintenance and Service Guide DVD-ROM and CD-ROM Drive (IDE) Problems Problem Cannot read compact disc. System will not boot from CD-ROM drive. Cannot eject compact disc. CD-ROM device is not detected; driver is not loaded. Table 4-8 DVD-ROM and CD-ROM Drive (IDE) Problems Possible Solution...
Page 111: Memory Problems
Memory Problems Problem Out of memory error. Memory count during POST is wrong. Insufficient memory error during operation. Unit is powered on but no video is being displayed to the screen and the power LED is blinking red. SCSI Problems Problem System will not boot from a SCSI drive...
Page 112: Network Problems
4-18 Compaq Professional Workstation AP550 Maintenance and Service Guide Network Problems The process of debugging network cabling is not discussed. Problem System does not detect a network controller. System Setup utility reports unprogrammed EPROM. Diagnostics reports a failure. Table 4-11 Network Problems Cause Possible driver problem.
Page 113 Table 4-11 Network Problems continued Problem Diagnostics passes, but the system does not communicate with the network. Network controller stopped working when an expansion board was installed. Cause Network drivers are not loaded, or driver parameters do not match current configuration.
Page 114: Audio Hardware Conflicts
4-20 Compaq Professional Workstation AP550 Maintenance and Service Guide Table 4-11 Network Problems continued Problem Network controller stopped working without apparent cause. Audio Hardware Conflicts Hardware conflicts occur when two or more peripheral devices contend for the same signal lines or channels.
Page 115: Computer Setup And Diagnostics Utilities
Computer Setup and Diagnostics Utilities The Computer Setup and Diagnostics utilities provide information you will need about the workstation. Computer Setup Diagnostics Creating a Diagnostics Diskette Running Computer Checkup (TEST) Running View System Information (INSPECT) Running Diagnostic Utilities for Error Codes Explanations and procedures for each utility are included in this chapter.
Page 116: Accessing The Computer Setup Menu
4-22 Compaq Professional Workstation AP550 Maintenance and Service Guide Accessing the Computer Setup Menu NOTE: Computer Setup is built into the reprogrammable system ROM on the Compaq Professional Workstation AP550 and is shipped in English only. Computer Setup is also available in 12 additional languages that can be accessed from the Computer Setup utility menu.
Page 117: Computer Setup
Task View the product name, type/speed/stepping for both processors, CPU serial number, system ROM date, system board revision, installed memory size, and asset tracking number. Set the system time and date. View the currently installed drive A: (preinstalled diskette drive) and drive B: devices and set resources for diskette drives.
Page 118 4-24 Compaq Professional Workstation AP550 Maintenance and Service Guide Table 4-12 Computer Setup continued Set the power button configuration (on/off or suspend/wakeup) and enable/disable power LED blink-in-suspend mode. NOTE: This selection does not appear if the energy saver mode is disabled. Enable the Power-On Password.
Page 119: Clearing Configuration Memory
Table 4-12 Computer Setup continued Save the system configuration to a blank 1.44-MB diskette. Restore the system configuration from a diskette. Restore factory default settings and exit Computer Setup. Exit Computer Setup without applying or saving any changes. Save changes to the system configuration and exit Computer Setup.
Page 120: Diagnostics Utilities
4-26 Compaq Professional Workstation AP550 Maintenance and Service Guide 4. Locate the SW50 Clear CMOS switch on the system board. Figure 4-1. Locating the SW50 Clear CMOS switch on the system board 5. Press the SW50 Clear CMOS switch to clear the workstation CMOS. 6.
Page 121 Running Computer Checkup (TEST) NOTE: Computer Checkup (TEST) will detect Compaq hardware. Devices from other manufacturers may not be detected. TEST is the primary diagnostics utility. TEST confirms whether or not the various workstation devices are recognized by the system and whether or not they are functioning properly. Use TEST in the following instances: Quick Check Diagnostics—Runs a quick, general test on each device with a minimal number of prompts.
Page 122 4-28 Compaq Professional Workstation AP550 Maintenance and Service Guide To run TEST: 1. Restart the workstation from the diagnostics diskette you have created. 2. Press Enter to bypass the welcome screen. 3. Select Computer Checkup (TEST), then press Enter. 4. Select the option to view the device list. A list of installed hardware devices is displayed. 5.
Page 123 Running View System Information (INSPECT) NOTE: View System Information (INSPECT) will detect Compaq hardware. Devices from other manufacturers may not be detected. The View System Information (INSPECT) utility provides information about the system after it has been configured, including: System Contents of the operating system startup files System ROM System storage...
Page 124 4-30 Compaq Professional Workstation AP550 Maintenance and Service Guide Running Diagnostic Utilities for Error Codes Diagnostics utilities error codes help identify possibly defective subassemblies. The following tables list possible error codes, descriptions of each error condition, and actions required to resolve the error condition. See Chapter 3, Removal and Replacement Procedures, for assistance in the removal and replacement of a particular subassembly.
Page 125: Error Codes
Error Codes Microprocessor Error Code 101-xx 102-xx 103-xx 104-xx 105-xx 106-xx 107-xx 108-xx 109-xx 110-xx 113-01 114-01 199-xx Table 4-13 Microprocessor Test Error Codes Description CPU test failed. Coprocessor error. DMA controller failed. Interrupt controller failed. Port error. Keyboard controller self-test failed.
Page 126 4-32 Compaq Professional Workstation AP550 Maintenance and Service Guide Memory Error Code 200-xx 202-xx 203-xx 204-xx 211-xx 214-xx 215-xx Keyboard Do not hold down a key during the boot-up sequence. Holding down any key during the boot-up sequence causes the Basic Input Output System (BIOS) to beep, as a warning of possible keyboard problems.
Page 127 Printer Parallel Printer Test Error Codes Error Code 401-xx 402-xx 403-xx Diskette Drive Diskette Drive Test Error Codes Error Code 600-xx 601-xx 602-xx 603-xx 604-xx 605-xx 606-xx 609-xx 610-xx 697-xx 698-xx 699-xx Table 4-16 Description Recommended Action Printer failed or not connected. The following steps apply to 401-xx through 403-xx: Printer port test failed.
Page 128 4-34 Compaq Professional Workstation AP550 Maintenance and Service Guide Serial Port Error Code 1101-xx Modem Error Code 1201-xx 1202-xx 1203-xx 1204-xx 1205-xx 1210-xx Pointing Device Error Code 8601-xx 8602-xx Table 4-18 Serial Test Error Codes Description Serial port test failed Table 4-19 Modem Communications Test Error Codes Description...
Page 129 DVD-ROM and CD-ROM Drive (IDE) DVD-ROM and CD-ROM Drive (IDE) Error Code 3301-xx 3305-xx 6600-xx 6600-xx 6605-xx 6608-xx 6623-xx Tape Drive Tape Drive Test Error Codes Error Code 1900-xx 1901-xx 1902-xx 1903-xx 1904-xx 1905-xx 1906-xx Table 4-21 Description Recommended Action CD-ROM drive read test failed.
Page 130 4-36 Compaq Professional Workstation AP550 Maintenance and Service Guide Video Error Code 501-xx 502-xx 503-xx 504-xx 505-xx 506-xx 507-xx 508-xx 509-xx 510-xx 511-xx 512-xx 514-xx 516-xx 2402-xx 2403-xx 2404-xx 2405-xx 2406-xx 2408-xx 2409-xx Table 4-23 Video Test Error Codes Description Recommended Action Graphics controller test failed.
Page 131 Table 4-23 Video Test Error Codes continued Error Code 2410-xx 2411-xx 2412-xx 2414-xx 2416-xx 2418-xx 2419-xx 2421-xx 2422-xx 2423-xx 2424-xx 2425-xx 2431-xx 2432-xx 2448-xx 2451-xx 2456-xx 2458-xx 2468-xx 2477-xx 2478-xx 2480-xx Description Recommended Action Video 640 × 200 mode test failed. The following error codes apply to error codes 2410-xx through 2456-xx:...
Page 132 4-38 Compaq Professional Workstation AP550 Maintenance and Service Guide Audio Error Code 3206-xx Network Interface Error Code 6000-xx 6014-xx 6016-xx 6028-xx 6029-xx 6054-xx 6056-xx 6068-xx 6069-xx 6089-xx Table 4-24 Audio Test Error Codes Description Audio System Internal Error Table 4-25 Network Interface Test Error Codes Description Network ID test failed.
Page 133: Scsi Error Codes
SCSI Error Codes This section includes the error codes for the following SCSI devices: Hard drives CD-ROM drives Tape drives The SCSI error codes are written in the format AABB-CC and can be determined by looking up the respective parts of the code in Table 4-26, Table 4-27, and Table 4-28. AA (Table 4-26) identifies the drive type being tested.
Page 134 4-40 Compaq Professional Workstation AP550 Maintenance and Service Guide Error Code XX00-XX XX05-XX XX06-XX XX23-XX XX28-XX Error Code XXXX-02 XXXX-03 XXXX-05 XXXX-06 XXXX-07 XXXX-08 XXXX-09 XXXX-10 XXXX-11 XXXX-12 XXXX-13 XXXX-14 XXXX-15 XXXX-16 XXXX-17 XXXX-18 XXXX-21 65XX-24 Table 4-27 SCSI Test Names Device Read SA/Media...
Page 135 Table 4-28 SCSI Test Error Codes continued Error Code 66XX-24 67XX-24 XXXX-25 XXXX-30 XXXX-31 XXXX-32 XXXX-33 XXXX-34 XXXX-35 XXXX-36 XXXX-39 XXXX-40 XXXX-41 XXXX-42 XXXX-43 XXXX-44 XXXX-50 XXXX-51 XXXX-52 XXXX-53 XXXX-54 XXXX-60 XXXX-61 XXXX-65 Description Recommended Action Media hard error Media hard error Unknown Controller timed out Replace the indicated device.
Page 136: Upgrading The Rom
4-42 Compaq Professional Workstation AP550 Maintenance and Service Guide Table 4-28 SCSI Test Error Codes Error Code XXXX-90 XXXX-91 XXXX-99 Upgrading the ROM If the Compaq Professional Workstation AP550 does not have a Setup Password enabled, the ROM is not write-protected, and unauthorized updates can occur. If you need or want to upgrade your system ROM, you can: Order the Compaq Support Software CD Kit.
Page 137: Remote Rom Flash
Remote ROM Flash The Compaq Professional Workstation AP550 offers Remote ROM upgrade capability. The following software is available for downloading from the Compaq website: www.compaq.com Remote Management Setup (allows upgrading of the system ROM remotely) Remote ROM Flash Remote Security Settings Remote Wakeup ROM Image for Remote ROM Flash (included in the CAB file for flashing the ROM remotely)
Page 138 4-44 Compaq Professional Workstation AP550 Maintenance and Service Guide When the system successfully starts from the diskette and reprograms the ROM, the following three keyboard lights will turn on. Ctrl Figure 4-2. Identifying keyboard lights The following table lists the various keyboard light combinations, as well as the meaning and action associated with each combination.
Page 139: Fault Management
Compaq Diagnostics for Windows NT. If the workstation is connected to a network managed by Compaq Insight Manager or other Simple Network Management Protocol (SNMP)–based management products (for example, HP OpenView or IBM Tivoli TME10 NetView), the workstation also sends a fault notice to the network management application.
Page 140: Compaq Insight Manager
Environment alerts for workstations with a temperature out of the normal range Compaq Management Agents for Workstations The Compaq Management Agents for Workstations provides local alerting, Desktop Management Interface (DMI), Simple Network Management Protocol (SNMP), and DMI Web agents for Compaq Professional Workstations that support Intelligent Manageability running Windows NT.
Page 141: Compaq Restore Cd
Compaq Restore CD The Compaq Restore CD is a set of Compaq-specific drivers and Compaq value added software that enables the workstation to operate at optimum performance. Updates are available on the Compaq website at www.compaq.com and through a subscription to the Compaq Support Software CD Kit.
Page 142: Compaq Diagnostics For Windows Nt
4-48 Compaq Professional Workstation AP550 Maintenance and Service Guide Compaq Diagnostics for Windows NT To use Compaq Diagnostics for Windows NT: 1. Double-click the Compaq Diagnostics for Windows NT icon located in the Control Panel. The screen displays an overview of the computer hardware and software. 2.
Page 143: System Security
Security Features The Compaq Professional Workstation AP550 is equipped with features that secure valuable components and system integrity. The following table identifies and explains the security features. Feature Setup Password Power-On Password System Security Table 5-1 Security Features Purpose How It Is Established Allows configuration to be Computer Setup menu.
Page 144: Setup Password
5-2 Compaq Professional Workstation AP550 Maintenance and Service Guide Table 5-1 Security Features continued Feature Serial or Parallel Interface Control Removable Media Boot Control Removable Media Write Control Cable Lock Provision IMPORTANT: Always set different passwords for the various types of passwords like the Power-On Password, the Setup Password, and the Windows NT password.
Page 145 Establishing a Power-On Password 1. Turn on the workstation. 2. When the F10 = Setup message appears in the lower-right corner of the screen, press F10. NOTE: You have approximately 30 seconds to press F10. If you do not press F10 while the message is displayed, you must restart the workstation to access the utility.
Page 146 5-4 Compaq Professional Workstation AP550 Maintenance and Service Guide Changing a Setup or Power-On Password 1. Turn on the workstation. 2. To change the Setup Password, run Computer Setup. 3. To change the Power-On Password, when the key icon ( password, then a slash (/) or alternate delimiter character, your new password, another slash(/) or alternate delimiter character, and your new password: current password / new password / new password...
Page 147 Clearing a Setup or Power-On Password If you forget the Setup or Power-On Password, you cannot use the Computer Setup utility to change the configuration settings. You may view the current settings, but you may not change them unless you know the Setup or Power-On Password. To clear the Setup or Power-On Password: 1.
Page 148: Windows Nt Workstation Password
5-6 Compaq Professional Workstation AP550 Maintenance and Service Guide Enabling a Setup or Power-On Password To enable the Setup or Power-on Password features: 1. Turn off the workstation. CAUTION: Before removing the workstation access panel, ensure that the workstation is turned off, all cables are disconnected from the back of the workstation, and the power cord is disconnected from the grounded AC outlet.
Page 149: National Keyboard Delimiter Characters
National Keyboard Delimiter Characters Each keyboard is designed to meet country-specific requirements. The syntax and keys you use for changing or deleting a password depend on the keyboard that came with the workstation. The following table identifies the correct delimiter character for each keyboard. Arabic Belgian BHCSY*...
Page 150: Advanced Security Management
5-8 Compaq Professional Workstation AP550 Maintenance and Service Guide Advanced Security Management You can access the following security features through the Computer Setup menu: Storage Disable removable media boot ability Disable removable media write ability Disable serial port Disable parallel port Security QuickLock Cable lock provision...
Page 151: Reenabling A Serial Port Or Parallel Port
Reenabling a Serial Port or Parallel Port The workstation ships with the serial and parallel ports enabled. If a user has disabled either of these ports, you may need to re-enable them to service the workstation. To reenable the ports: 1.
Page 152: Jumper And Switch Information
Chapter Jumper and Switch Information Overview This chapter provides jumper and switch information for the system board and disk drives for the Compaq Professional Workstation AP550. The components on the system board, which is Pentium II–based, are illustrated in the following figure. See the corresponding table for component names.
Page 153 6-2 Compaq Professional Workstation AP550 Maintenance and Service Guide Figure 6-1. Overview of system board components Reference 12 11 Table 6-1 System Board Components Accelerated Graphics Port (AGP) 4X Pro slot Serial port cable connector Wake-on-LAN connector (RJ45) LVD/SE connector (SCSI) Embedded processor power module connector (VRM) Processor power module connector for secondary processor Primary processor slot...
Page 154: Mass Storage
Mass Storage The Compaq Professional Workstation AP550 supports Ultra3 SCSI, Wide Ultra2 SCSI, and Ultra ATA hard drives. The specifications included below are the standard hard drive configurations shipped with the workstation. For specifications on other hard drives, refer to the Service Quick Reference Guide.
Page 155: 18-Gb Ultra3 Scsi Hard Drive
6-4 Compaq Professional Workstation AP550 Maintenance and Service Guide 18-GB Ultra3 SCSI Hard Drive Drive Size: Printed Pin 1 POWER NOTES: 1. All jumper and switch settings are shown in the factory default setting, including those not labeled. 2. Termination is disabled/removed. Figure 6-3.
Page 156: Cd-Rom Or Dvd-Rom Drive
CD-ROM or DVD-ROM Drive Figure 6-4. Locating the jumper positions for the 40X Max CD-ROM drive (IDE) or the DVD-ROM drive Zip Drive The jumper positions for the 100- and 250-MB Zip drives are identical. Drive Size: Default Setting Jumper Setting for Cable Select Device 0 (Master) Device 1 (Slave)
Page 157: Physical And Operating Specifications
Overview This chapter provides operating and performance specifications for the following Compaq Professional Workstation AP550 hardware: System unit Power supply Diskette drive Zip drive CD-ROM drive DVD-ROM drive Hard drives Audio system Keyboard Mouse (3-button) Graphics controller Network controller Physical and Operating Specifications Chapter...
Page 158: System Unit
7-2 Compaq Professional Workstation AP550 Maintenance and Service Guide System Unit Component Minitower Dimensions Height Width Depth Desktop Dimensions Height Width Depth Approximate Weight Power Supply Rated Input Voltage Rated Input Frequency Environmental Requirements Temperature Operating Shipping Humidity (noncondensing) Operating...
Page 159 System Interrupts Hardware IRQ IRQ 0 IRQ 1 IRQ 2 IRQ 3 IRQ 4 IRQ 5 IRQ 6 IRQ 7 IRQ 8 IRQ 9 IRQ 10 IRQ 11 IRQ 12 IRQ 13 IRQ 14 IRQ 15 Physical and Operating Specifications 7-3 Table 7-2 System Function System timer...
Page 160 7-4 Compaq Professional Workstation AP550 Maintenance and Service Guide Hardware DMA DMA 0 DMA 1 DMA 2 DMA 3 DMA 4 DMA 5 DMA 6 DMA 7 I/O Address (Hex) 000 - 00F 010 - 01F 020 - 021 02E – 02F 040 - 043 044-04D 04E –...
Page 161 Table 7-4 System I/O continued I/O Address (Hex) 093 - 09F 0A0 - 0BF 0C0 - 0DF 0E0 - 0EB 0EC - 0ED 0EE - 0EF 0F0 - 0F1 0F2 - 0F3 0F4 - 0F5 0F6 - 0F8 0FC - 0FF 100 - 12F 130 - 131 132 - 16F...
Page 162 7-6 Compaq Professional Workstation AP550 Maintenance and Service Guide Table 7-4 System I/O continued I/O Address (Hex) 2F0 - 2F7 2F8 - 2FF 300 - 317 318 - 319 31A - 36F 370 - 377 378 - 37F 380 - 387 388 - 38B 38C - 397 39A - 3AF...
Page 163 Memory Address Size FFFFFFFFh to FFF80000h 512 KB FEEFFFFFh to FEE00000h 1024 KB FECFFFFFh to FEC00000h 1024 KB FEBFFFFFh to TOM (Top of Depends on memory installed Memory) TOM (Top of Memory) – 1 to 64 KB (However, USB buffer not TOM –...
Page 164: 375-W Power Supply
7-8 Compaq Professional Workstation AP550 Maintenance and Service Guide 375-W Power Supply Input specifications Rated input voltage Rated input current Rated input frequency General specifications Input power Holdup time Full output rating Minimum load Ambient temperature range Operating Storage Safety standard Input transient susceptibility Surge-tolerant power supply (superimposed on AC line)
Page 165: Diskette Drive
Diskette Drive Size and Capacity Size (inch) High density (MB) Low density (KB) Light Height Bytes per sector Sectors per track High density Low density Tracks per side High density Low density Read/write heads Average access time (ms) Track-to-track (high/low) Average (high/low) Latency average (ms) Data Transfer Rate (Mbit/s)
Page 166: Zip Drive
7-10 Compaq Professional Workstation AP550 Maintenance and Service Guide Zip Drive Disk Data transfer rate Sustained Burst Seek time (includes settling time)* Minimum Average Maximum Latency (average rotational delay) Spindle speed Track-to-track access time** Average head switch time Head reload time † Start-stop time (average) ‡...
Page 167 100-MB Zip Drive Cartridge Characteristics Disk Spares capacity Form factor width Weight Drop height/shock Insertion/removal cycles Estimated shelf life Physical and Operating Specifications 7-11 Table 7-9 1.6 MB 98.0 mm (3.875 inch) 49.6 grams (1.75 oz) 3.0 meters 2,000 minimum 10 years...
Page 168 7-12 Compaq Professional Workstation AP550 Maintenance and Service Guide Disk Data transfer rate Maximum Sustained 250-MB Cartridge 100-MB Cartridge Read Write Burst (both cartridges) Seek time (includes settling time)* Minimum Average Maximum Latency (average rotational delay) Spindle speed Track-to-track access time** Average head switch time Head reload time †...
Page 169 250-MB Drive Zip Cartridge Characteristics Disk Spares capacity Form factor width Weight (typical) Insertion/removal cycles Estimated shelf life* Environmental Limits Maximum operating temperature † Operating humidity (noncondensing) Shipping temperature * Extrapolated from previous product data. † Operating temperature limits shall not be exceeded inside the cartridge. Physical and Operating Specifications 7-13 Table 7-11 5.2 MB...
Page 170: Cd-Rom Drive
7-14 Compaq Professional Workstation AP550 Maintenance and Service Guide CD-ROM Drive Disk Diameter Capacity Mode 1 Mode 2 Disk thickness Track pitch Performance Access Time Random seek Full stroke seek Data transfer rate Sustained Burst Bus rate Cache/buffer Start-up time Single Multisession Stop-time...
Page 171 Table 7-12 40X Max Tray-Load CD-ROM Drive (IDE) Disk Audio interface Line out connector RMS output voltage S/N ratio Channel separation Noise Frequency response Digital audio out connector Electrical DC power requirements 5 VDC +/-5% 12 VDC +/-5% DC current 5 VDC +/-5% (typical) 5 VDC =/-5% (maximum) 12 VDC +/-5% (typical)
Page 172: Dvd-Rom Drive
7-16 Compaq Professional Workstation AP550 Maintenance and Service Guide DVD-ROM Drive Disk Applicable Disc Formats Disc Diameter Capacity Disc Thickness Track Pitch Block Size Performance Access Time Data Transfer Rate (1KB = 1024 Bytes) Table 7-13 DVD-ROM Drive DVD (Single and Double Layer) CD-ROM Mode 1 &...
Page 173 Table 7-13 DVD-ROM Drive continued Disk Bus Rate Cache/Buffer Start-Up Time Stop Time Error Rates Reliability Indicators Audio Interface Line Out Connector: RMS Output Voltage S/N Ratio Channel Separation THD & Noise Frequency Response Electrical DC Input Power Requirements: 5 VDC ± 5%, 12 VDC ±...
Page 174: Hard Drives
7-18 Compaq Professional Workstation AP550 Maintenance and Service Guide Hard Drives Capacity Transfer rate Media Asynchronous Synchronous Seek time (typical) Single track Average Full stroke Disk rotation speed Cylinders Data heads/cylinder Sectors/track Buffer size NOTE: Drive performance may vary slightly, depending upon the vendor. Table 7-14 9.1-GB Ultra3 SCSI Hard Drive 9.1 GB...
Page 175 18-GB Ultra3 SCSI Hard Drive Capacity Transfer rate Media Asynchronous Synchronous Seek time (typical) Single track Average Full stroke Disk rotation speed Cylinders Data heads/cylinder Sectors/track Buffer size NOTE: Drive performance may vary slightly, depending upon the vendor. Physical and Operating Specifications 7-19 Table 7-15 18.2 GB 151 to 257 Mbits/s...
Page 176 7-20 Compaq Professional Workstation AP550 Maintenance and Service Guide Capacity Drive type Transfer rate Media Interface Seek time (typical) Single track Average Full stroke Disk rotation speed Cylinders Data heads (logical) Sectors/track (logical) Buffer size NOTE: Drive performance may vary slightly, depending upon the vendor. Table 7-16 10-GB Ultra ATA-66 IDE Hard Drive 10 GB...
Page 177: Audio System
Audio System Sampling rate Full scale input voltage (rms) Microphone-in Line-in Full scale output voltage (rms) Line output Dynamic range (DR) Line input-to-line output Digital playback Digital record Total Harmonic Distortion + Noise Line input-to-line output Digital playback Digital record Frequency response (-3 dB cutoffs) Line level (48 kHz) Speaker...
Page 178: Mouse
7-22 Compaq Professional Workstation AP550 Maintenance and Service Guide Mouse Dimensions Height Length Width Weight Base resolution Tracking speed (maximum) Temperature Operating Storage Lifetime Mechanical Switch Relative humidity Table 7-19 3-Button Mouse U.S. Metric 1.42 in. 3.6 cm 4.17 in. 10.7 cm 2.87 in.
Page 179: Graphics Controllers
Graphics Controllers ELSA Synergy II AGP Graphics Controller Maximum Color Support Resolutions 1920 x 1200 1920 x 1080 1600 x 1280 1600 x 1200 1600 x 1000 1536 x 1152 1280 x 1024 1152 x 864 1024 x 768 800 x 600 640 x 480 3Dlabs Oxygen GVX1 AGP Graphics Controller Color Support Resolutions...
Page 180 7-24 Compaq Professional Workstation AP550 Maintenance and Service Guide Matrox Productiva G100 Multi-Monitor Maximum Color Support Resolutions 640 x 480 800 x 600 1024 x 768 1152 x 864 1280 x 1024 1600 x 1200 1920 x 1080 1920 x 1200 1800 x 1440 Matrox G400 AGPGraphics Controller Maximum Color Support Resolutions...
Page 181: Network Controller
Resolution 1440 x 900 1280 x 1024 1280 x 960 1152 x 864 1024 x 768 800 x 600 640 x 480 Network Controller Physical connector Operating environment Temperature Humidity Electrical bus RJ-45 Network Cable Specifications The RJ-45 connections use an unshielded twisted pair (UTP) cable of 22-, 24-, or 26-gauge. The cable must comply with the IEEE 802.3 10BASE-T standard.
Page 182: External Connectors
Overview This chapter provides an overview of the external connectors, including pin assignments for the Compaq Professional Workstation AP550. Physical Location The following illustration identifies the physical location of each connector. See the corresponding table for connector names. Chapter External Connectors...
Page 183 8-2 Compaq Professional Workstation AP550 Maintenance and Service Guide Figure 8-1. Identifying the external connectors Identifier Table 8-1 External Connectors Connector Identifier Power cord Line-out Line-in Headphone Microphone Keyboard Mouse Connector Two universal serial bus (USB) RJ45 LVD/SE cable (SCSI) Parallel Serial COM1) Serial (COM2)
Page 184: Pin Assignments
Pin Assignments Connector and Icon (Orange) 188368bd.AI, KEYBD.EPS Connector and Icon (Green) Table 8-2 Keyboard Table 8-3 Mouse External Connectors 8-3 Signal Data Unused Ground +5 VDC Clock Reserved Signal Data Reserved Ground +5 VDC Clock Reserved...
Page 185: Parallel Interface
8-4 Compaq Professional Workstation AP550 Maintenance and Service Guide Connector and Icon Table 8-4 Parallel Interface Signal Strobe Data Bit 0 Data Bit 1 Data Bit 2 Data Bit 3 Data Bit 4 Data Bit 5 Data Bit 6 Data Bit 7 Acknowledge Busy Paper end...
Page 186 Connector and Icon Connector and Icon 15 14 13 12 11 * For DDC support (I 2 C monitors) Table 8-5 Serial Interfaces Table 8-6 Video External Connectors 8-5 Signal Carrier detect Receive data Transmit data Data terminal ready Signal ground Data set ready Request to send Clear to send...
Page 187 8-6 Compaq Professional Workstation AP550 Maintenance and Service Guide Connector and Icon 1 3 5 7 2 4 6 8 Connector and Icon Table 8-7 Ethernet RJ-45 Table 8-8 Signal (+) Transmit data (-) Transmit data (+) Receive data Unused Unused (-) Receive data Unused...
Page 188 LVD/SE Connector (SCSI) (low voltage differential/single ended) Connector and Icon Signal 1-16 Ground 17-18 TERMPWR Reserved 20-34 Ground -D12 -D13 -D14 -D15 -DP1 -DP0 49-50 Ground Table 8-9 51-52 External Connectors 8-7 Signal TERMPWR Reserved Ground -ATN Ground -BSY -ACK -RST -MSG -SEL...
Page 189 8-8 Compaq Professional Workstation AP550 Maintenance and Service Guide Connector and Icon Connector and Icon Connector and Icon (Blue) Connector and Icon Table 8-10 Audio Line-In Connector Stereo 1/8-inch miniphone Table 8-11 Audio Line-Out Connector Stereo 1/8-inch miniphone Table 8-12 Microphone Connector Stereo 1/8-inch miniphone Table 8-13...
Page 190: Index
Symbols and Numbers 1/2 height mounting bracket spare part number 1-12 10-GB hard drive spare part number 1-7 128-MB memory modules spare part number 1-6 128-MB RIMM spare part number 1-6 18-GB hard drive spare part number 1-7 256-MB memory modules spare part number 1-6 256-MB RIMM spare part number 1-6...
Page 191 Ultra ATA/66 6-2 serial port cable 6-2 Wake-on-LAN 6-2 Continuity RIMM spare part number 1-6 converting desktop to a minitower 3-59 minitower to a desktop 3-56 date, setting 4-23 deleting power-on password 5-4 setup password 5-4 delimiter characters 5-7...
Page 192 diskette drive connector 6-2 enabling/disabling diskette boot 4-23 enabling/disabling diskette write 4-23 location 3-9 mounting bracket, spare part number 1-12 spare part number 1-7 specifications 7-9 test error codes 4-33 troubleshooting 4-11 viewing current devices and setting resources 4-23 diskette write, re-enabling 5-8 display problems, troubleshooting 4-12 drivelock 3-21...
Page 193 4 Compaq Professional workstation AP550 Maintenance and Service Guide flat panel monitor TFT5000 (opal) spare part number 1-11 TFT5000S color (EMEA) spare part number 1-11 TFT5000S color (outside EMEA) spare part number 1-11 TFT8000 (carbon) with protective panel spare part number 1-11 TFT8000 (carbon) without protective panel spare part...
Page 194 Microprocessor test error codes 4-31 Microsoft Windows NT Workstation password 5-6 Microsoft Windows NT Workstations CD for 4.0 spare part number 1-12 minitower to a desktop, converting 3-56 modem test error codes 4-34 monitor problems, troubleshooting 4-12 monitor, flat panel...
Page 195 6 Compaq Professional workstation AP550 Maintenance and Service Guide parts catalog, illustrated 1-1 password disabled jumper 6-2 Microsoft Windows NT Workstation 5-6 power-on 5-3 power-on key icon 4-2 setup 5-2 Windows NT Workstation 5-6 bus mastering, enabling/disabling 4-24 expansion slots 6-2 locations 3-23 VGA palette snooping, enabling/disabling 4-24...
Page 196 removal and replacement 3.5-inch drive from a 5.25-inch drive adapter 3-15 battery 3-54 DIMM memory module 3-36 disconnecting CD-ROM drive cables 3-16 drivelock 3-21 drivelock, reinstalling 3-22 heatsink 3-43 I/O panel 3-53 power supply 3-48 power switch 3-50 processor 3-40 processor guide rails (URM) 3-45 RIMM memory module 3-32...
Page 197 8 Compaq Professional workstation AP550 Maintenance and Service Guide 64-MB RIMM 1-6 733 processor 1-5 9-GB hard drive 1-7 access panel 1-4 auxiliary fan 1-5 battery 1-5 cable kit 1-8 CD-ROM hard drive 1-7 chassis/base pan 1-4 Continuity RIMM 1-6 diskette drive 1-7 diskette drive mounting bracket 1-12...
Page 198 terminator board spare part number 1-5 Test audio error codes 4-38 CD-ROM error codes 4-35 diskette drive error codes 4-33 DVD-ROM error codes 4-35 keyboard error codes 4-32 memory error codes 4-32 microprocessor error codes 4-31 modem error codes 4-34 network interface error codes 4-38 pointing device error codes 4-34...
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Ap550 - professional - 128 mb ram Professional workstation ap550

Compaq Deskpro AP550 Maintenance And Service Manual

About this Guide

Chapter 1 Illustrated Parts Catalog

Chapter 2 Service Preliminaries

Chapter 3 Removal and Replacement Procedures

Chapter 4 Diagnostic Tools

Chapter 5 System Security

Chapter 6 Jumper and Switch Information

Chapter 7 Physical and Operating Specifications

Chapter 8 External Connectors

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