Page 1 Addenda #1, 2, and 3 to Compaq Professional Workstation SP750 Maintenance & Service Guide Compaq Professional Workstation SP750 Part number 158722-003 Spare part number 164414-001 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 Number Description Intel Pentium III processor with heatsink (179616-002) and thermal film (328614-001) 800 MHz/133-MHz with 256K cache 866 MHz/133-MHz with 256K cache Intel Pentium III processor with heatsink (215610-002) and thermal film (328614-001) 1-GHz/133 MHz Four-RIMM Memory Expansion Board Graphics Controllers Intense3D Wildcat 4110, AGP 2X Intense3D Wildcat 4210, AGP Pro...
Page 3 Specifications – Graphics Controllers 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 4 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 Aspect Ratio 4 x 3 5 x 4...
Page 5 Specifications - Graphics Controllers (continued) 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. Matrox G200 Quad MMS Graphics Controller Graphics Memory Aspect Ratio 32 MB 4:3/5:4...
Page 6 C ompaq Professional Workstation SP750 Maintenance and Service Guide...
Page 7 Professional Workstation SP750 Maintenance and Service Guide First Edition (January 2000) Part Number 158722-001 Spare Part Number 164414-001 Compaq Computer Corporation...
Page 8 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 9: Table Of Contents
About This Guide Symbols in Text ...vi Compaq Technician Notes ...vi Where to Go for Additional Help ...vii Telephone Numbers...vii Chapter 1 Product Description Front Panel Components and LEDs... 1-1 Rear Panel Connectors ... 1-4 Drive Positions... 1-5 Serial Number Location ... 1-7 Chapter 2 Spare Parts System Unit...
Page 10 iv Compaq Professional Workstation SP750 Maintenance and Service Guide Removal and Replacement Preliminaries continued Electrostatic Discharge Information ... 3-1 Generating Static... 3-2 Preventing Electrostatic Damage to Equipment ... 3-2 Personal Grounding Methods and Equipment ... 3-3 Grounding Workstations... 3-3 Recommended Materials and Equipment ... 3-4 General Cleaning Safety Precautions...
Page 11 Removal and Replacement Procedures continued Memory Components... 4-30 Overview... 4-30 Removing a Memory Board ... 4-31 RIMM Slot Locations ... 4-33 RIMM Slot Configurations ... 4-34 Important Guidelines for RIMM Installation... 4-36 Installing a RIMM ... 4-36 Installing a Memory Board ... 4-38 Removing an Ultra3 SCSI Controller ...
Page 12: About This Guide
This maintenance and service guide is a troubleshooting guide that can be used for reference when servicing the Compaq Professional Workstation SP750. 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 13: Where To Go For Additional Help
WARNING: To reduce the risk of personal injury from electrical shock and hazardous energy levels, do not exceed the level of repair specified in these procedures. Because of the complexity of the individual boards and subassemblies, do not attempt to make repairs at the component level or to make modifications to any printed wiring board.
Page 14: Product Description
Chapter Product Description Front Panel Components and LEDs This chapter describes the front and rear panel components, drive positions, and serial number locations for the Compaq Professional Workstation SP750.
Page 15 1-2 Compaq Professional Workstation SP750 Maintenance and Service Guide Figure 1-1. Identifying front panel components...
Page 16 Front Panel Components Item Component Power On/Off LED Power button Hard drive activity LED Network activity LED Bay 4 Bay 5* Bay 6* Bay 7 Speaker * An optional Zip drive can be installed in bay 5 or 6. Table 1-1 Description After plugging the power cord into a grounded AC outlet and the workstation, if the LED is:...
Page 17: Rear Panel Connectors
1-4 Compaq Professional Workstation SP750 Maintenance and Service Guide Rear Panel Connectors The following figure illustrates the location of the external connectors and jacks. See Table 1-2 for a description of each connector. Figure 1-2. Identifying rear panel connectors Item Component Power cord connector Ultra3 SCSI connector...
Page 18: Drive Positions
Product Description 1-5 Drive Positions Your workstation supports up to seven individual drive bays. See Table 1-3 for a description of the drive bay components. Figure 1-3. Identifying drive bay components...
Page 19 1-6 Compaq Professional Workstation SP750 Maintenance and Service Guide As shown in Figure 1-3, the workstation provides seven drive bays. Bays 1 through 3 are located in the 3.5-inch removable hard drive cage, which is located behind the side access panel of the workstation.
Page 20: Serial Number Location
Serial Number Location Provide the computer serial number to Compaq whenever you request information or order spare parts. The serial number is located just above the right top side of the side access panel 2 and on the rear of the workstation 1. For asset control, the serial number is also embedded in the Electrically Erasable Programmable Read Only Memory (EEPROM) on the system board.
Page 21: Spare Parts
Chapter Spare Parts This chapter illustrates and classifies parts for the Compaq Professional Workstation SP750. A reference for spare parts also is provided.
Page 22: System Unit
2-2 Compaq Professional Workstation SP750 Maintenance and Service Guide System Unit Mechanical Components Figure 2-1. Mechanical components for the Compaq Professional Workstation SP750 Item Description Workstation access panel Chassis Front bezel Table 2-1 Mechanical Components Spare Parts List Spare Part Number 329263-001 338549-001...
Page 23: System Components
Spare Parts 2-3 System Components Figure 2-2. System components for the Compaq Professional Workstation SP750...
Page 24 Power switch and LEDs with cable (includes power cord) Battery 90 mm fan Premier Sound desktop 5-watt speaker Intel Pentium III Xeon Processor, 733-MHz with a 133-MHz front-side bus 80 mm fan Compaq Professional Workstation SP750 Base Unit w/Pentium III Xeon 667 Hz...
Page 25: Memory
Spare Parts 2-5 Memory Figure 2-3. Memory components for the Compaq Professional Workstation SP750...
Page 26 2-6 Compaq Professional Workstation SP750 Maintenance and Service Guide Item 64-MB ECC Direct Rambus Inline Memory Modules (RIMM) 600 MHz Continuity RIMM (CRIMM) Eight-RIMM Memory Expansion Board 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) 800-MHz 256-MB ECC Direct Rambus Inline Memory Modules (RIMM) 600-MHz 256-MB ECC Direct Rambus Inline Memory Modules (RIMM) 600-MHz...
Page 27: Mass Storage Devices
Spare Parts 2-7 Mass Storage Devices Figure 2-4. Mass storage devices for the Compaq Professional Workstation SP750...
Page 28 2-8 Compaq Professional Workstation SP750 Maintenance and Service Guide Item Note: Parts or components marked with an asterisk (*) are not illustrated. Table 2-4 Mass Storage Device Spare Parts List Description 18-GB Ultra3 SCSI hard drive (10,000 rpm) 9-GB Ultra3 SCSI hard drive (10,000 rpm) 1.44-MB diskette drive 40X CD-ROM drive 20-GB Ultra ATA/66 IDE hard drive (7,200 rpm)
Page 29: Cable Kits
Cable Kits Figure 2-5. Cable kits for the Compaq Professional Workstation SP750 Item Note: Parts or components marked with an asterisk (*) are not illustrated. Table 2-5 Cable Kits Spare Parts List Description Miscellaneous cable kit Ultra2 SCSI five-device cable SCSI LVD twisted pair cable Dual serial port cable Spare Parts 2-9...
Page 30: Graphic Controllers
2-10 Compaq Professional Workstation SP750 Maintenance and Service Guide Graphic Controllers Figure 2-6. Graphic controllers for the Compaq Professional Workstation SP750...
Page 31 Graphic Controllers Spare Parts List Item Matrox Productiva G100 Quad Multi-Monitor Series (PCI) PowerStorm 600 (enh-3D) 3Dlabs Oxygen GVX1 (AGP) Matrox G400 Dual (AGP) (dual display, analog output) ELSA Synergy II 32-MB 4X AGP (entry-3D) 3Dlabs Oxygen GVX1 PCI (mid-3D) ELSA Synergy II 32 MB (NLX/AGP) Matrox G400 16 MB (NLX/AGP) Note: Parts or components marked with an asterisk (*) are not illustrated.
Page 32: Network Controllers
2-12 Compaq Professional Workstation SP750 Maintenance and Service Guide Network Controllers Figure 2-7. Network controllers for the Compaq Professional Workstation SP750 Item Netelligent 16/4 TR PCI UTP/STP Controller Compaq NC3121 Fast Ethernet NIC PCI, 10/100, Wake-on-LAN Compaq NC3120 Fast Ethernet NIC PCI, 10/100 Compaq NC3123 Fast Ethernet NIC PCI, 10/100, Wake-on-LAN 3COM 10/100 3C905C-TX NIC RSA Intel ®...
Page 33: Input/Output Devices
Input/Output Devices Item Keyboard and Mouse Keyboard Three-button mouse Labtec Spaceball 4000 3D motion control input device (optional) Monitors P75 monitor P1610 color monitor (Beach) P1610 color monitor (Opal) P110 monitor V1000 color monitor V900 color monitor V700 color monitor Note: Parts or components marked with an asterisk (*) are not illustrated.
Page 34: Software And Miscellaneous
2-14 Compaq Professional Workstation SP750 Maintenance and Service Guide Software and Miscellaneous Item Software Miscellaneous Note: Parts or components marked with an asterisk (*) are not illustrated. Documentation Item Note: Parts or components marked with an asterisk (*) are not illustrated. Table 2-9 Software and Miscellaneous Spare Parts List Description...
Page 35: Removal And Replacement Preliminaries
Removal and Replacement Preliminaries Preliminaries This chapter provides general service information for the computer. Adherence to the procedures and precautions described in this chapter is essential for proper service. CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the system board.
Page 36: Generating Static
3-2 Compaq Professional Workstation SP750 Maintenance and Service Guide Generating Static The following table shows that: Different activities generate different amounts of static electricity. Static electricity increases as humidity decreases. Event Walking across carpet Walking across vinyl floor Motions of bench worker Removing DIPs* from plastic tube Removing DIPs* from vinyl tray Removing DIPs* from Styrofoam...
Page 37: Personal Grounding Methods And Equipment
Personal Grounding Methods and Equipment Use the following equipment to prevent static electricity damage to equipment: Wrist straps are flexible straps with a minimum of one-megohm +/- 10 percent resistance in the ground cords. To provide proper ground, a strap must be worn snug against bare skin.
Page 38: Recommended Materials And Equipment
3-4 Compaq Professional Workstation SP750 Maintenance and Service Guide Recommended Materials and Equipment Materials and equipment that are recommended for use in preventing static electricity include: Antistatic tape Antistatic smocks, aprons, or sleeve protectors Conductive bins and other assembly or soldering aids Conductive foam Conductive tabletop workstations with ground cord of one-megohm +/- 10 percent resistance...
Page 39: Cleaning The Computer Case
Cleaning the Computer Case Follow all safety precautions in the “General Cleaning Safety Precautions” section in this chapter before cleaning the computer. To clean the computer case, follow the procedures described below: To remove light stains or dirt, use plain water with a clean, lint-free cloth or swab. For stronger stains, use a mild dishwashing liquid diluted with water.
Page 40: Cleaning The Monitor
3-6 Compaq Professional Workstation SP750 Maintenance and Service Guide Cleaning the Monitor Wipe the monitor screen with a clean cloth moistened with water or with a towelette designed for cleaning monitors. Do not use sprays or aerosols directly on the screen, the liquid may seep into the housing and damage a component.
Page 41: Screws
Screws The screws used in the computer are not interchangeable. They may have standard or metric threads and may be of different lengths. If an incorrect screw is used during the reassembly process, it can damage the unit. Compaq strongly recommends that all screws removed during disassembly be kept with the part that was removed, then returned to their proper locations.
Page 42: Removal And Replacement Procedures
Chapter Removal and Replacement Procedures This chapter provides subassembly/module-level removal and replacement procedures for the Compaq Professional Workstation SP750. After completing all necessary removal and replacement procedures, run the Compaq Setup and Diagnostics program to verify that all components are operating properly.
Page 43: Service Preparations
4-2 Compaq Professional Workstation SP750 Maintenance and Service Guide Service Preparations CAUTION: The power supply in the Compaq Professional Workstation SP750 has an auxiliary power section. This section is always active as long as the unit is plugged into a live AC outlet. Be sure to turn off the switch and unplug the power cord before performing any service work.
Page 44: Cable Lock
Cable Lock The workstation comes standard with a cable lock provision for attaching a padlock and/or cable lock. If installed, the locks must be removed before accessing internal components. To remove the lock: 1. Unlock and remove the cable lock or the padlock. 2.
Page 45: Workstation Feet
4-4 Compaq Professional Workstation SP750 Maintenance and Service Guide Workstation Feet NOTE: Not all procedures in this chapter require the removal of the workstation feet. Be sure to thoroughly read each removal and replacement procedure before attempting to access any internal components.
Page 46: Side Access Panel
Side Access Panel CAUTION: Do not operate the workstation with the side access panel removed. The panel is an integral part of the cooling system; removing it while the system is running may adversely affect data integrity. To remove the side access panel: 1.
Page 47: Front Bezel
4-6 Compaq Professional Workstation SP750 Maintenance and Service Guide Front Bezel The front bezel is mounted to the chassis with release levers that are integrated into the bezel. To remove the front bezel: 1. Perform the steps in the “Service Preparations” section in this chapter, then place the workstation on its side.
Page 48: Blank Drive Bezel
Blank Drive Bezel To remove the blank drive bezel from the front bezel: 1. Perform the steps in the “Service Preparations” section in this chapter, then place the workstation on its side. CAUTION: Before removing the side 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 49: Emi/Cooling Shield
4-8 Compaq Professional Workstation SP750 Maintenance and Service Guide EMI/Cooling Shield An EMI/cooling shield covers bays 5 and 6 to provide proper cooling and EMI protection. To remove the EMI/cooling shield: 1. Perform the steps in the “Service Preparations” section in this chapter, then place the workstation on its side.
Page 50: Power Supply Air Baffle
Power Supply Air Baffle To remove the power supply air baffle: 1. Perform the steps in the “Service Preparations” section in this chapter, then place the workstation on its side. CAUTION: Before removing the side 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 51: Mass Storage Devices
4-10 Compaq Professional Workstation SP750 Maintenance and Service Guide Mass Storage Devices This section discusses removal and replacement procedures for the mass storage devices supported on the Compaq Professional Workstation SP750. Drive Positions The Compaq Professional Workstation SP750 can house up to seven mass storage devices. The following illustration identifies the physical drive locations.
Page 52 Table 4-1 Drive Positions Item Component Bay 1 Part of the removable hard drive cage. A 3.5-inch, third-height bay that supports a 1.0-inch hard drive or a 1.6-inch hard drive. Bay 2 Part of the removable hard drive cage. A 3.5-inch, third-height bay that supports a 1.0-inch hard drive.
Page 53: Hardware Screws
4-12 Compaq Professional Workstation SP750 Maintenance and Service Guide Hardware Screws There are 17 extra hardware screws on the side of the air plenum. The top group of eight screws 1 is for installing hard drives in the removable hard drive cage. The bottom group of nine screws 2 is for installing removable media storage devices in the front drive bays.
Page 54: Cd-Rom Drive
CD-ROM Drive NOTE: This procedure also applies to removing a DVD-ROM drive. To remove the CD-ROM or DVD-ROM drive: 1. Perform the steps in the “Service Preparations” section in this chapter, then place the workstation on its side. CAUTION: Before removing the side 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 4-14 Compaq Professional Workstation SP750 Maintenance and Service Guide Figure 4-11. Disconnecting the cables from the CD-ROM drive To replace the CD-ROM or DVD-ROM drive, reverse the above procedure. CAUTION: Use only 3/16-inch or 5-mm screws as guide screws. Longer screws can damage the internal components of the drive.
Page 56: Diskette Drive
Diskette Drive IMPORTANT: Before beginning the removal procedure, be sure there is no diskette in the drive. To remove the diskette drive: 1. Perform the steps in the “Service Preparations” section in this chapter, then place the workstation on its side. CAUTION: Before removing the side 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 57 4-16 Compaq Professional Workstation SP750 Maintenance and Service Guide 4. Remove the two screws that secure the diskette drive. 5. Pull the diskette drive straight out of the drive cage. Figure 4-13. Removing the diskette drive To replace the diskette drive, reverse the above procedure. CAUTION: Use only 3/16-inch or 5-mm long screws.
Page 58: Removing A Hard Drive From Bays 5 Or 6
Removing a Hard Drive from Bays 5 or 6 Drive bays 5 and 6 can be configured with either a 1.0-inch or 1.6-inch hard drive. To remove a hard drive: NOTE: Before removing a SCSI device, please read the “SCSI Guidelines” chapter in the Compaq Service Reference Guide .
Page 59 4-18 Compaq Professional Workstation SP750 Maintenance and Service Guide Figure 4-15. Removing the EMI/cooling shield Figure 4-16. Removing the hard drive...
Page 60 Removal and Replacement Procedures 4-19 Figure 4-17. Removing a hard drive from the hard drive bracket To replace the hard drive, reverse the previous procedure.
Page 61: Removing A Hard Drive From The Removable Hard Drive Cage In Bays 1 Through 3
4-20 Compaq Professional Workstation SP750 Maintenance and Service Guide Removing a Hard Drive from the Removable Hard Drive Cage in Bays 1 through 3 NOTE: The removable hard drive cage supports up to three 1.0-inch hard drives or two 1.6-inch hard drives.
Page 62 4. Pull back the power supply air baffle, as illustrated in the “Power Supply Air Baffle” section in this chapter, to access the hard drive cage. 5. Loosen the two thumbscrews that hold the drive cage in place. 6. Slide the drive cage out of the chassis. Figure 4-19.
Page 63: Installing A Hard Drive In The Removable Hard Drive Cage In Bays 1 Through 3
4-22 Compaq Professional Workstation SP750 Maintenance and Service Guide Installing a Hard Drive in the Removable Hard Drive Cage in Bays 1 through 3 NOTE: Before installing a SCSI device, please read the “SCSI Guidelines” chapter in the Compaq Service Reference Guide .
Page 64 5. Install an optional hard drive in the removable hard drive cage. Figure 4-22. Installing a 1.0-inch hard drive 6. Reinstall the removable hard drive cage. Figure 4-23. Reinstalling the removable hard drive cage Removal and Replacement Procedures 4-23...
Page 65 4-24 Compaq Professional Workstation SP750 Maintenance and Service Guide Figure 4-24. Connecting the signal and power cables to the hard drive 7. Reassemble the workstation.
Page 66: Scsi Cables And Guidelines
SCSI Cables and Guidelines All workstation models use the following three areas for connecting mass storage SCSI devices: 1. Internally with hard drives in the removable hard drive cage 2. Internally with storage devices in the front panel drive bays 3.
Page 67: Expansion Boards
4-26 Compaq Professional Workstation SP750 Maintenance and Service Guide Expansion Boards This section discusses removal and replacement procedures for PCI expansion boards. NOTE: The following instructions also apply to installing and removing graphics controllers. Additional information on your graphic controllers may be found on the Workstation Reference Library CD. The Compaq Professional Workstation SP750 contains four 32-bit/33-MHz and two 64-bit/66-MHz PCI expansion slots.
Page 68: Removing An Expansion Board
Removing an Expansion Board To remove an expansion board: 1. Perform the steps in the “Service Preparations” section in this chapter, then place the workstation on its side. CAUTION: Before removing the side 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 69: Installing An Expansion Board
4-28 Compaq Professional Workstation SP750 Maintenance and Service Guide Installing an Expansion 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. Disconnect the network cable and any external devices from the system.
Page 70: Removal And Replacement Procedures
4. Slide the expansion board into the expansion slot and press the board firmly into place. Figure 4-29. Installing an expansion board IMPORTANT: When installing an expansion board, press firmly on the board so that the whole connector seats properly in the expansion board slot. NOTE: If you are installing a full-length PCI board, make sure the card is engaged with the card guide.
Page 71: Memory Components
4-30 Compaq Professional Workstation SP750 Maintenance and Service Guide Memory Components The Compaq Professional Workstation SP750 includes a memory expansion board that must be removed from the system board to remove and replace memory modules. Overview The Compaq Professional Workstation SP750 supports 600- or 800-MHz Direct Rambus Inline Memory Modules (RIMMs).
Page 72: Removing A Memory Board
Removing a Memory Board To remove a memory board: 1. Perform the steps in the “Service Preparations” section in this chapter, then place the workstation on its side. CAUTION: Before removing the side 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 73 4-32 Compaq Professional Workstation SP750 Maintenance and Service Guide 4. To release the memory board, press downward on the plastic release latch holding the memory board in the memory board retainer. 5. Carefully remove the memory board from the memory board connector. Figure 4-32.
Page 74: Rimm Slot Locations
RIMM Slot Locations The Compaq Professional Workstation SP750 ships with an eight-RIMM slot memory expansion board (four RIMM slots per memory channel). Figure 4-33. Location of eight RIMM slots Identifier Removal and Replacement Procedures 4-33 Table 4-4 RIMM Slot Locations RIMM Slot Memory Channel RIMM Slot 1...
Page 75: Rimm Slot Configurations
4-34 Compaq Professional Workstation SP750 Maintenance and Service Guide RIMM Slot Configurations When installing RIMMs on the eight-RIMM slot memory board, you must follow one of the following four configurations: Configuration 1 Location RIMM Slots 1 and 2 RIMM Slots 3 and 4 RIMM Slots 5 and 6 RIMM Slots 7 and 8 Configuration 2...
Page 76 Configuration 4 Configuration 4 (Four Pairs of RIMMs) Location RIMM Slots 1 and 2 RIMM Slots 3 and 4 RIMM Slots 5 and 6 RIMM Slots 7 and 8 WARNING: To reduce the risk of personal injury when replacing or removing RIMMs, allow the module being removed from the RIMM slot sufficient time to cool.
Page 77: Important Guidelines For Rimm Installation
4-36 Compaq Professional Workstation SP750 Maintenance and Service Guide Important Guidelines for RIMM Installation When installing RIMMs, you must follow the guidelines in Table 4-9. CAUTION: The listed guidelines must be followed when installing RIMMs or your workstation will not function. Use only 64-, 128-, or 256-MB, 600-MHz or 800-MHz Error Checking and Correcting (ECC) RIMMs.
Page 78 Removal and Replacement Procedures 4-37 3. Press inward on the two retainer latches to secure the RIMM in the slot. Figure 4-34. Installing a RIMM To remove a memory module from a RIMM slot, reverse the above procedure.
Page 79: Installing A Memory Board
4-38 Compaq Professional Workstation SP750 Maintenance and Service Guide Installing a Memory Board To install a memory board: 1. Perform the steps in the “Service Preparations” section in this chapter, then place the workstation on its side. CAUTION: Before removing the side 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: Removing An Ultra3 Scsi Controller
Removing an Ultra3 SCSI Controller To remove an Ultra3 SCSI Controller: 1. Perform the steps in the “Service Preparations” section in this chapter, then place the workstation on its side. CAUTION: Before removing the side 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: Accelerated Graphics Port Controller
4-40 Compaq Professional Workstation SP750 Maintenance and Service Guide Accelerated Graphics Port Controller The workstation ships standard with a graphics controller installed in the Accelerated Graphics Port (AGP) graphics controller slot. The following figure shows the location of the AGP graphics controller slot.
Page 82 5. Hold the board at each end and carefully rock it back and forth until the connectors pull free from the slot. Do not scrape the board against other components. Figure 4-37. Removing an AGP Graphics Controller 6. Store the board in antistatic packaging. CAUTION: If you permanently remove an expansion board, install a protective slot cover to ensure proper cooling.
Page 83: Processor
4-42 Compaq Professional Workstation SP750 Maintenance and Service Guide Processor Removing the Processor WARNING: To reduce the risk of personal injury from hot surfaces, allow the internal system components to cool before touching them. To remove the processor and heatsink assembly: 1.
Page 84: Installing An Additional Processor
CAUTION: After connecting the power cord to the grounded AC outlet and to the workstation, DO NOT turn on the power switch if the power LED is a steady amber color. A steady amber color indicates that the processor is not seated properly. Installing an Additional Processor You can upgrade the workstation to a multiprocessor system.
Page 85 4-44 Compaq Professional Workstation SP750 Maintenance and Service Guide CAUTION: A primary processor must be installed in the primary processor slot when installing a second processor or your workstation will not function. 4. Reassemble the workstation and connect the power cord that was disconnected from the grounded AC outlet or the back of the workstation.
Page 86: Speaker
Speaker To remove the speaker: 1. Perform the steps in the “Service Preparations” section in this chapter, then place the workstation on its side. CAUTION: Before removing the side 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 4-46 Compaq Professional Workstation SP750 Maintenance and Service Guide Figure 4-41. Removing the fours screws and removing the speaker To replace the speaker, reverse the above procedure.
Page 88: Card Guide
Card Guide To remove the card guide: 1. Perform the steps in the “Service Preparations” section in this chapter, then place the workstation on its side. CAUTION: Before removing the side 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 89 4-48 Compaq Professional Workstation SP750 Maintenance and Service Guide Figure 4-43. Removing the four screws securing the card guide to the card guide bracket To replace the card guide, reverse the above procedure.
Page 90: System Fan
System Fan To remove the system fan: 1. Perform the steps in the “Service Preparations” section in this chapter, then place the workstation on its side. CAUTION: Before removing the side 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 91: Processor Cage
4-50 Compaq Professional Workstation SP750 Maintenance and Service Guide Processor Cage To remove the processor cage: 1. Perform the steps in the “Service Preparations” section in this chapter, then place the workstation on its side. CAUTION: Before removing the side 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 92: System Board
Removal and Replacement Procedures 4-51 System Board The system board contains the memory expansion board, primary processor, secondary processor (if installed), AGP graphics controller (if installed), and the battery. Each of these components is spared separately. The following illustration and Table 4-10 identify the internal system board components of your workstation.
Page 93 4-52 Compaq Professional Workstation SP750 Maintenance and Service Guide Item Power connectors Clear/disable password header Battery Primary processor slot Secondary processor slot Processor cage fan connector Back processor fan External Ultra3 SCSI connector (channel B) Ultra3 SCSI connector (channel B) Ultra3 SCSI connector (channel A) AGP Pro expansion slot <...
Page 94 Removal and Replacement Procedures 4-53 5. Remove the system board. Figure 4-47. Removing the system board To install a new system board, reverse the above procedure.
Page 95: Lithium Battery
4-54 Compaq Professional Workstation SP750 Maintenance and Service Guide Lithium Battery The battery that comes with your workstation provides power to the real-time clock and has a life of about five years. When replacing the battery, use a CR2032 or equivalent 3-volt lithium coin cell battery.
Page 96 2. Lift the battery out of its holder. IMPORTANT: Properly dispose of the old battery. Figure 4-49. Removing the coin cell battery 3. Insert new battery. NOTE: Positive polarity should be positioned up. 4. The battery holder automatically secures the battery in the proper position. 5.
Page 97: Power Switch And Led Cable Assembly
4-56 Compaq Professional Workstation SP750 Maintenance and Service Guide Power Switch and LED Cable Assembly The power switch can be replaced without removing the power supply. To remove the power switch: 1. Perform the steps in the “Service Preparations” section in this chapter, then place the workstation on its side.
Page 98 Removal and Replacement Procedures 4-57 Figure 4-51. Removing the screws securing the crown assembly To replace the power switch holder, reverse the above procedure.
Page 99: Power Supply
4-58 Compaq Professional Workstation SP750 Maintenance and Service Guide Power Supply WARNING: This procedure should be performed only by qualified personnel. Do not reconnect power to the computer until the computer cover is replaced. Connecting the power before replacing the computer cover can result in personal injury or equipment damage. 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 100 Removal and Replacement Procedures 4-59 4. Slide the power supply toward the front of the chassis, then pull up to remove it. Figure 4-52. Removing the power supply To replace the power supply, reverse the above procedure.
Page 101: Connectors, Jumpers, And Switches
Chapter Connectors, Jumpers, and Switches Overview This chapter provides jumper and switch information for the Compaq Professional Workstation SP750.
Page 102: Disable And Clear Password Jumper
5-2 Compaq Professional Workstation SP750 Maintenance and Service Guide Disable and Clear Password Jumper To disable the Power-On and Setup Password features, or to clear the Power-On and Setup Passwords if you forget them and cannot access the workstation system or Computer Setup, follow these steps: 1.
Page 103: Cmos Reset Switch
CMOS Reset Switch The workstation configuration memory (CMOS) may occasionally be corrupted. When this occurs, it is usually due to software or hardware that is not functioning accurately, or to the addition or removal of expansion boards. If the workstation configuration memory becomes corrupted, it is necessary to clear the configuration memory.
Page 104 5-4 Compaq Professional Workstation SP750 Maintenance and Service Guide 4. Locate the SW50 pushbutton switch on the system board. Figure 5-2. Locating the SW50 pushbutton switch on the system board 5. Press the SW50 pushbutton switch to clear the workstation CMOS. 6.
Page 105: Mass Storage
Mass Storage The Compaq Professional Workstation SP750 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. 9.1-GB Ultra3 SCSI Hard Drive Drive Size: Printed Circuit Board Pin 1...
Page 106: 18-Gb Ultra3 Scsi Hard Drive
5-6 Compaq Professional Workstation SP750 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 5-4.
Page 107: Cd-Rom Or Dvd-Rom Drive
CD-ROM or DVD-ROM Drive Figure 5-5. 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 108: Specifications
Overview This chapter provides operating and performance specifications for the following Compaq Professional Workstation SP750 hardware: System unit Diskette drive Zip drive CD-ROM drive DVD-ROM drive Hard drives Audio system Keyboard Mouse (Three-button) Graphics controllers Network controllers Chapter Specifications...
Page 109: System Unit
6-2 Compaq Professional Workstation SP750 Maintenance and Service Guide System Unit Dimensions (with bezel and without feet) Height Depth Width Weight Power Supply Input Requirements Rated Input Voltage Rated Input Current Rated Input Frequency Input Power Input Power (BTU/H) Power Supply Output Power Rated Steady-State Power Maximum Peak Power Relative Humidity...
Page 110 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 Table 6-2 System Function System timer Keyboard Unused...
Page 111 6-4 Compaq Professional Workstation SP750 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 - 04F...
Page 112 Table 6-4 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 113 6-6 Compaq Professional Workstation SP750 Maintenance and Service Guide Table 6-4 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 114 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 TOM 64 KB (However, USB buffer is not –...
Page 115: Diskette Drive
6-8 Compaq Professional Workstation SP750 Maintenance and Service Guide Diskette Drive Size and Capacity Size High density Low density 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 Track-to-track (high/low) Average (high/low)
Page 116: Zip Drive
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) ‡ Start Stop * Seek time does not include latency or head switch time. Average seek time is the average time of a random seek.
Page 117 6-10 Compaq Professional Workstation SP750 Maintenance and Service Guide Disk Spares capacity Form factor width Weight Drop height/shock Insertion/removal cycles Estimated shelf life Table 6-8 100-MB Zip Drive Cartridge Characteristics Specifications 1.6 MB 3.875 inch (98.0 mm) 1.75 oz (49.6 grams) 3.0 meters 2,000 minimum 10 years...
Page 118 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 † Start-Stop Time (Average) ‡...
Page 119 6-12 Compaq Professional Workstation SP750 Maintenance and Service Guide 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. † Do not exceed operating temperature limits inside the cartridge. Table 6-10 250-MB Drive Zip Cartridge Characteristics Specifications...
Page 120: Cd-Rom Drive
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 Error rates Soft error Hard error Seek error Dimensions Chassis...
Page 121 6-14 Compaq Professional Workstation SP750 Maintenance and Service Guide Table 6-11 40X Max Tray-Load CD-ROM Drive (IDE) 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...
Page 122: Dvd-Rom Drive
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 6-12 DVD-ROM Drive Specifications DVD (single and double layer) CD-ROM Mode 1 and 2 CD-DA CD-XA (mode 2, form 1 and 2) CD-I (mode 2, form 1 and 2) CD-I Ready, CD-bridge, CD-R...
Page 123 6-16 Compaq Professional Workstation SP750 Maintenance and Service Guide Table 6-12 DVD-ROM Drive continued Performance 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...
Page 124: Hard Drives
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 6-13 9.1-GB Ultra3 SCSI Hard Drive 9.1 GB 13.6 to 21.3 MB/s 5.0 MB/s...
Page 125 6-18 Compaq Professional Workstation SP750 Maintenance and Service Guide 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 6-14 18-GB Ultra3 SCSI Hard Drive 18.2 GB...
Page 126 20-GB Ultra ATA/66 IDE Hard Drive 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 Logical Blocks Operating Temperature NOTE: Drive performance may vary slightly, depending upon the vendor. Table 6-15 20 GB 65 (soft)
Page 127: Audio System
6-20 Compaq Professional Workstation SP750 Maintenance and Service Guide 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...
Page 128: Mouse
Mouse Dimensions Height Length Width Weight Base Resolution Tracking Speed (maximum) Temperature Operating Storage Lifetime Mechanical Switch Relative Humidity Table 6-18 Three-Button Mouse U.S. Metric 1.42 inch 3.6 cm 4.17 inch 10.7 cm 2.87 inch 7.4 cm 5.20 oz 150 g 400 dpi 10 in/sec 25 cm/sec...
Page 129: Graphics Controllers
6-22 Compaq Professional Workstation SP750 Maintenance and Service Guide 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...
Page 130 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 Millenium G400 AGP Graphics Controller Maximum Color Support Maximum Resolutions Refresh Rate...
Page 131: Network Controllers
6-24 Compaq Professional Workstation SP750 Maintenance and Service Guide Resolution 1440 x 900 1280 x 1024 1280 x 960 1152 x 864 1024 x 768 800 x 600 640 x 480 Network Controllers 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.
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HP Compaq SP750 Maintenance And Service Manual

About this Guide

Chapter 1 Product Description

Chapter 2 Spare Parts

Chapter 3 Removal and Replacement Preliminaries

Chapter 4 Removal and Replacement Procedures

Removal and Replacement Procedures

Chapter 5 Connectors, Jumpers, and Switches

Chapter 6 Specifications

Quick Links

Related Manuals for HP Compaq SP750

Summary of Contents for HP Compaq SP750

Table of Contents