HP Compaq 500B Microtower Maintenance And Service Manual Download Page 88

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Connector Pin Assignments

This appendix contains the pin assignments for many computer and workstation connectors. Some of
these connectors may not be used on the product being serviced.

4-Pin Power (for CPU)

Connector and Icon

Pin

Signal

GND

+12V CPU

-12V CPU

Ethernet BNC

Connector and Icon

Pin

Signal

Data

Ground

USB

Connector and Icon

Pin

Signal

+5 VDC

- Data

+ Data

Ground

Appendix D Connector Pin Assignments

Summary of Contents for Compaq 500B Microtower

Page 1: ...Maintenance Service Guide Compaq 500B and 505B Minitower Business PC ...

Page 2: ...nying such products and services Nothing herein should be construed as constituting an additional warranty HP shall not be liable for technical or editorial errors or omissions contained herein This document contains proprietary information that is protected by copyright No part of this document may be photocopied reproduced or translated to another language without the prior written consent of He...

Page 3: ...ollow directions could result in bodily harm or loss of life CAUTION Text set off in this manner indicates that failure to follow directions could result in damage to equipment or loss of information NOTE Text set off in this manner provides important supplemental information iii ...

Page 4: ...iv About This Book ...

Page 5: ...12 Cable Management 19 Cable Connections 20 Drives 21 Installing Additional Drives 21 System Board Drive Connections 22 Removing an Optical Drive 23 Replacing an Optical Drive 25 Removing a Hard Drive 26 Replacing a Hard Drive 29 Front I O and USB Panel Housing Assembly 31 Power Switch LED Assembly 32 System Fan 33 Heat sink assembly Intel Model 500B 34 Heat sink assembly AMD Model 505B 35 Process...

Page 6: ...tup Exit 59 Appendix B Diagnostics Interpreting Diagnostic Beep Codes 61 LED Codes 62 Accessing HP Insight Diagnostics 63 Testing Memory Modules 63 POST Error Warning Messages 64 Power Button Power Button LED 65 Using the Setup Utility 65 BIOS Updates 66 Clearing CMOS 66 Appendix C Troubleshooting Without Diagnostics Safety and Comfort 68 Before You Call for Technical Support 68 Helpful Hints 69 S...

Page 7: ...Damage to Equipment 86 Personal Grounding Methods and Equipment 86 Grounding the Work Area 87 Recommended Materials and Equipment 87 Operating Guidelines 88 Routine Care 89 General Cleaning Safety Precautions 89 Cleaning the Computer Case 89 Cleaning the Keyboard 89 Cleaning the Monitor 90 Cleaning the Mouse 90 Service Considerations 90 Power Supply Fan 90 Tools and Software Requirements 90 Screws...

Page 8: ...Hard Drive Capacities 94 Appendix G Power Cord Set Requirements General Requirements 95 Japanese Power Cord Requirements 95 Country Specific Requirements 96 Appendix H Specifications Index 99 viii ...

Page 9: ...1 Product Description Chassis Designations The following subsection illustrates the 500B and 505B chassis design Microtower MT Chassis Designations 1 ...

Page 10: ...r Compaq 505B MT features AMD AM3 Athlon II and Phenom II processors nVidia MCP61P nVidia GeForce 6150SE integrated graphics controller Both PCs feature Support for up to 4GB of DDR3 SDRAM in two dual channel DIMM slots One PCI E x16 two PCI E x1 one PCI expansion slot 300W passive Power Factor Correction PFC and non PFC power supply Six USB 2 0 ports Realtek 10 100 Mbps Ethernet controller Integr...

Page 11: ...ter before disconnecting any cables CAUTION Regardless of the power on state voltage is always present on the system board as long as the system is plugged into an active AC outlet In some systems the cooling fan is on even when the computer is in the Standby or Suspend modes The power cord should always be disconnected before servicing a unit 5 Disconnect the power cord from the electrical outlet...

Page 12: ... the Computer Access Panel 3 Grasp the handle on the side cover and pull towards the back of the computer Slide the cover about 2 4 cm 1 inch to remove it NOTE You may want to lay the computer on its side to install internal parts Be sure the side with the access panel is facing up Figure 2 2 Removing the Computer Access Panel 4 Chapter 2 Removal and Replacement Procedures Microtower MT Chassis ...

Page 13: ...4 Remove the side panel by lifting it away from the computer Figure 2 3 Removing the Computer Access Panel To replace the access panel reverse the removal steps Access Panel 5 ...

Page 14: ...embly on page 3 2 Remove the access panel Access Panel on page 4 3 Pull each of the three side tabs that secure the front bezel to the computer to release the front bezel Figure 2 4 Removing the Front Bezel 6 Chapter 2 Removal and Replacement Procedures Microtower MT Chassis ...

Page 15: ...ng the front bezel out to remove from the computer Figure 2 5 Removing the Front Bezel NOTE The appearance of the front bezel may vary To reinstall the front bezel reverse the removal procedure Front Bezel 7 ...

Page 16: ...ual channel mode For proper system operation the DDR3 SDRAM DIMMs must be industry standard 240 pin unbuffered PC3 10600 1333 MHz compliant 1 5 volt DDR3 SDRAM DIMMs The DDR3 SDRAM DIMMs must also support CAS latency 9 DDR3 1333 Mhz 9 9 9 timing contain the mandatory JEDEC SPD information In addition the computer supports 512Mbit 1Gbit and 2Gbit non ECC memory technologies single sided and double ...

Page 17: ...oard Figure 2 6 DIMM Socket Locations 500B Figure 2 7 DIMM Socket Locations 505B Table 2 1 DIMM Socket Locations Item Description Socket Color 1 DIMM1 socket Channel A populate first Blue 2 DIMM2 socket Channel A Blue NOTE A DIMM must occupy the DIMM1 socket Memory 9 ...

Page 18: ...dation resulting from having incompatible metals in contact with each other Static electricity can damage the electronic components of the computer or optional cards Before beginning these procedures ensure that you are discharged of static electricity by briefly touching a grounded metal object When handling a memory module be careful not to touch any of the contacts Doing so may damage the modul...

Page 19: ...d properly seated The DIMM must be pushed all the way down into the socket and sit evenly in the socket to avoid memory corruption Make sure the latches are in the closed position 3 6 Repeat steps 4 and 5 to install any additional modules 7 Replace the computer access panel 8 Reconnect the power cord and any external devices then turn on the computer The computer should automatically recognize the...

Page 20: ...ull height or half height expansion cards Figure 2 10 Expansion Slot Locations 500B Figure 2 11 Expansion Slot Locations 505B Table 2 2 Expansion Slot Locations Item Description 1 PCI Express x16 expansion slot 2 PCI Express x1 expansion slot 3 PCI Express x1 expansion slot 4 PCI expansion slot 12 Chapter 2 Removal and Replacement Procedures Microtower MT Chassis ...

Page 21: ... computer for disassembly Preparation for Disassembly on page 3 2 Remove the access panel Access Panel on page 4 3 Locate the add in cards at the back of the computer Figure 2 12 Locating the expansion card slots 4 On the back of the computer remove the screw from the bracket cover for the add in cards Figure 2 13 Opening the slot cover lock Expansion Cards 13 ...

Page 22: ...re 2 14 Removing the bracket cover 6 If you are removing a graphics card press on the latch to release it Figure 2 15 Press the latch to release the graphics card 14 Chapter 2 Removal and Replacement Procedures Microtower MT Chassis ...

Page 23: ...rd and carefully rock the card back and forth until the connectors pull free from the socket Be sure not to scrape the card against the other components Figure 2 16 Removing the graphics card from the slot 8 For other add in cards move the card back and forth gently to free it from the card slot in the computer Figure 2 17 Rocking the card to Remove Expansion Cards 15 ...

Page 24: ... 11 Store the removed card in anti static packaging 12 If you are not installing a new expansion card install an expansion slot cover to close the open slot CAUTION After removing an expansion card you must replace it with a new card or expansion slot cover for proper cooling of internal components during operation 16 Chapter 2 Removal and Replacement Procedures Microtower MT Chassis ...

Page 25: ...t on the chassis Press the card straight down into the expansion socket on the system board Figure 2 20 Installing an expansion card NOTE When installing an expansion card press firmly on the card so that the whole connector seats properly in the expansion card slot 14 If you are replacing a graphics card verify that the latch in the computer snaps back into place Figure 2 21 Replacing a graphics ...

Page 26: ... card is fully seated in the card slot Figure 2 22 Seating the card 16 Replace the bracket cover on the back of the computer Figure 2 23 Replacing the bracket cover 18 Chapter 2 Removal and Replacement Procedures Microtower MT Chassis ...

Page 27: ...t designed to take excessive pressure on them Some flat ribbon cables come prefolded Never change the folds on these cables Never bend a SATA data cable tighter than a 30 mm 1 18 in radius Never crease a SATA data cable Do not rely on components like the drive cage power supply or computer cover to push cables down into the chassis Always position the cables to lay properly by themselves When remo...

Page 28: ...lot PCIE1X black PCIe x1 expansion slot PCIE1X1 black PCIe x1 expansion slot PCIE16X black PCIe x16 expansion slot Table 2 4 Cable connections 505B Connector Name Connector Color Description ATXPOWER white power supply 24 pin ATXCPU white power supply 4 pin CHASSIS_FAN1 brown chassis fan CPU FAN white heat sink fan F_PANEL black front power button LED F_USB2 white front I O USB cable F_AUDIO yello...

Page 29: ...r model 505B CAUTION To prevent loss of work and damage to the computer or drive If you are inserting or removing a drive shut down the operating system properly turn off the computer and unplug the power cord Do not remove a drive while the computer is on or in standby mode Before handling a drive ensure that you are discharged of static electricity While handling a drive avoid touching the conne...

Page 30: ...nnectors Figure 2 25 System Board Drive Connections 500B Figure 2 26 System Board Drive Connections 505B Table 2 5 System Board Drive Connections No System Board Label 500B System Board Label 505B Color 1 SATA1 SATA0 dark blue 2 SATA2 SATA1 white 22 Chapter 2 Removal and Replacement Procedures Microtower MT Chassis ...

Page 31: ...mbly Preparation for Disassembly on page 3 2 Remove the access panel Access Panel on page 4 3 Remove the front bezel Front Bezel on page 6 4 Disconnect the power cable 1 and data cable 2 from the rear of the optical drive Figure 2 27 Disconnecting the power and data cables 5 Remove the screws that fasten the disc drive in the computer Figure 2 28 Removing the optical drive screws Drives 23 ...

Page 32: ... forward 7 Pull the disc drive out through the front of the computer Figure 2 30 Pull the drive from the computer NOTE To install an optical drive refer to Replacing an Optical Driveon page 25 24 Chapter 2 Removal and Replacement Procedures Microtower MT Chassis ...

Page 33: ... Front Bezel on page 6 4 If the new drive has screws installed on the sides of the drive remove the screws before inserting the drive into the chassis 5 Push the replacement disc drive partially into the drive bay in the computer Figure 2 31 Installing the optical drive 6 Connect the power cable 1 and data cable 2 to the rear of the optical drive Figure 2 32 Connecting the power and data cables Dr...

Page 34: ...be sure to back up the data from the old hard drive so that you can transfer the data to the new hard drive Also if you are replacing the primary hard drive make sure you have created a Recovery Disc Set to restore the operating system software drivers and any software applications that were preinstalled on the computer If you do not have this CD set select Start HP Backup and Recovery and create ...

Page 35: ...t of the computer below the optical drive bays Figure 2 35 Locating the hard drive 5 Disconnect the power 1 and data 2 cables by squeezing the latch on the connector and pulling to remove Figure 2 36 Disconnecting the hard drive cables Drives 27 ...

Page 36: ...37 Removing the hard drive screws 7 Pull the hard drive out of the front of the computer Figure 2 38 Pulling the hard drive from the computer NOTE To install a hard drive refer to Replacing a Hard Driveon page 29 28 Chapter 2 Removal and Replacement Procedures Microtower MT Chassis ...

Page 37: ...rive with a new drive use the four retainer screws from the old drive to install the new drive Figure 2 39 Installing the hard drive 3 Align the screw holes on the side of the hard drive with the holes marked HDD on the bay Figure 2 40 Align the screw holes CAUTION Never crease or bend a SATA data cable tighter than a 30 mm 1 18 in radius A sharp bend can break the internal wires Drives 29 ...

Page 38: ...rive 5 Attach the power and data connectors to the back of the drive Figure 2 42 Attaching the connectors 6 Replace the front bezel computer access panel and all cables 7 Lock any security devices that were disengaged when the access panel was removed 30 Chapter 2 Removal and Replacement Procedures Microtower MT Chassis ...

Page 39: ...front bezel Front Bezel on page 6 5 Unplug the four cables that connect the assembly to the system board 6 Remove the screw 1 that secures the housing to the chassis slide the housing up 2 and then pull the assembly away from the chassis while guiding the cables through the hole in the chassis Figure 2 43 Removing the front I O assembly To install the housing assembly reverse the removal procedure...

Page 40: ...Disconnect the braided cables from the system board 7 Remove the cable from the clips in the optical drive cage 8 Press the tabs near the bottom on both sides of the switch holder 1 to disengage it from the chassis rotate the bottom of the switch upward 2 and then pull it away from the chassis while guiding the wires through the hole in the chassis Figure 2 44 Removing the power switch To install ...

Page 41: ...n its side with the rear facing toward you 4 Disconnect the cable that connects the system fan to the system board 5 Remove the four Phillips screws that secure the fan to the chassis rotate the top of the fan forward and then remove the fan from the chassis Figure 2 45 Removing the system fan To install the fan reverse the removal procedures System Fan 33 ...

Page 42: ...s side to keep from contaminating the work area with thermal grease CAUTION Heat sink retaining screws should be tightened in diagonally opposite pairs as in an X to evenly seat the heat sink to the processor This is especially important as the pins on the socket are very fragile and any damage to them may require replacing the system board When reinstalling an existing heat sink make sure that it...

Page 43: ... on the heat sink 3 free from the tab on the heat sink bracket 8 Lift the heat sink from the processor and set it on its side to keep from contaminating the work area with thermal grease Figure 2 47 Removing the heat sink CAUTION Heat sink retaining screws should be tightened in diagonally opposite pairs as in an X to evenly seat the heat sink to the processor This is especially important as the p...

Page 44: ...dle the pins in the processor socket These pins are very fragile and handling them could cause irreparable damage Once pins are damaged it may be necessary to replace the system board CAUTION The heatsink must be installed within 24 hours of installing the processor to prevent damage to the processor s solder connections Figure 2 48 Removing an Intel processor To install a new processor 1 Place th...

Page 45: ...control cable to the system board CAUTION Heat sink retaining screws should be tightened in diagonally opposite pairs as in an X to evenly seat the heat sink on the processor This is especially important as the pins on the socket are very fragile and any damage to them may require replacing the system board NOTE After installing a new processor onto the system board always update the system ROM to...

Page 46: ...nce pins are damaged it may be necessary to replace the system board The heat sink must be installed within 24 hours of installing the processor to prevent damage to the processor s solder connections Figure 2 49 Removing an AMD processor To install a new processor 1 Place the processor in its socket and close the retainer 2 Secure the locking lever If reusing the existing heat sink go to step 3 I...

Page 47: ...e computer The latest system BIOS can be found on the Web at http h18000 www1 hp com support files Power Supply WARNING Voltage is always present on the system board when the computer is plugged into an active AC outlet To avoid possible personal injury and damage to the equipment the power cord should be disconnected from the computer and or the AC outlet before opening the computer NOTE When ins...

Page 48: ...ctors appropriately will prevent the computer or components from working successfully NOTE The location of the power connectors on the motherboard may vary from the ones shown below 7 Trace the power supply cables to the system components Optical disc drives A Hard disk drives B Motherboard main power C Motherboard fan D Figure 2 51 Power supply connections 40 Chapter 2 Removal and Replacement Pro...

Page 49: ...8 Disconnect the power cable from the optical disc and hard disk drives by squeezing the latch 1 on the connectors and pulling to remove Figure 2 52 Disconnecting the power cable Power Supply 41 ...

Page 50: ...etach the connector from the motherboard Figure 2 53 Disconnecting the main system board power connector Some connectors may have latches that must be pressed to remove them Figure 2 54 Connector Latches 42 Chapter 2 Removal and Replacement Procedures Microtower MT Chassis ...

Page 51: ...otherboard Figure 2 55 Disconnecting power connectors 11 Remove the four screws that connect the power supply to the computer The images below illustrate possible power supply screw locations Figure 2 56 Removing the power supply screws Power Supply 43 ...

Page 52: ...ull the power supply back and tilt it out of the computer Figure 2 58 Removing the power supply from the computer To install the power supply reverse the removal procedure Note that there is a latch a guide and a ledge on the computer that help secure the power supply 44 Chapter 2 Removal and Replacement Procedures Microtower MT Chassis ...

Page 53: ...are the computer for disassembly Preparation for Disassembly on page 3 2 Remove the access panel Access Panel on page 4 3 Lay the computer on its side with the rear facing toward you 4 Remove the front bezel Front Bezel on page 6 5 Remove an expansion cards Expansion Cards on page 12 6 Disconnect the power and data cables from the back of all installed drives 7 Disconnect all cables from the syste...

Page 54: ... latest version of the BIOS is being used on the computer The latest system ROM BIOS can be found at http h18000 www1 hp com support files Battery The battery that comes with your computer provides power to the real time clock and has a lifetime of about three years When replacing the battery use a battery equivalent to the battery originally installed on the computer The computer comes with a 3 v...

Page 55: ...per disposal please use the public collection system or return them to HP its authorized partners or its agents CAUTION Static electricity can damage the electronic components of the computer or optional equipment Before beginning these procedures ensure that you are discharged of static electricity by briefly touching a grounded metal object 1 Prepare the computer for disassembly Preparation for ...

Page 56: ...2 Push the other edge down until the clamp snaps over the other edge of the battery 3 Replace the computer access panel 4 Plug in the computer and turn on power to the computer 5 Reset the date and time your passwords and any special system setups using Computer Setup Refer to the Computer Setup F10 Utility Guide Type 3 Battery Holder 1 Pull back on the clip 1 that holds the battery in place then ...

Page 57: ...k in place 3 Replace the computer access panel 4 Plug in the computer and turn on power to the computer 5 Reset the date and time your passwords and any special system setups using Computer Setup Refer to the Computer Setup F10 Utility Guide Battery 49 ...

Page 58: ...tup F10 Utility and the settings described in this section Enable or disable removable media boot ability Using Computer Setup F10 Utilities Computer Setup can be accessed only by turning the computer on or restarting the system To access the Computer Setup Utilities menu complete the following steps 1 Turn on or restart the computer 2 As soon as the computer is turned on press F10 when the monito...

Page 59: ...OS could become corrupted It is safe to turn off the computer only after exiting the F10 Setup screen Computer Setup Main NOTE Support for specific Computer Setup options may vary depending on the hardware configuration Table A 1 Computer Setup Main Option Description System Time Allows you to set system time System Date Allows you to set system date Language Allows you to select language Floppy D...

Page 60: ... Version Model Number Serial Number Product Number Asset Tag Computer Setup Advanced NOTE Support for specific Computer Setup options may vary depending on the hardware configuration WARNING Setting items on this menu to incorrect values may cause your system to malfunction Table A 2 Computer Setup Advanced Option Description CPU Type view only CPU Speed view only Cache RAM view only Primary Video...

Page 61: ...nfiguration Table A 3 Computer Setup Power Option Description After AC Power Failure Allows you to select system restart behavior after power loss Stay Off Power On Auto XD Disables enables XD eXecute Disable bit NOTE The XD bit is a technology used in to separate areas of memory for use by either storage of processor instructions or code or for storage of data Memory designated with the NX attrib...

Page 62: ...e F12 key to boot from LAN Boot Device Priority Allows you to specify which device groups will boot first second third and fourth or to disable any of the four 1st Boot Device 2nd Boot Device 3rd Boot Device 4th Boot Device Options for each boot device include CD ROM Group Hard Drive Group Floppy Group Network Boot Group NOTE MS DOS drive lettering assignments may not apply after a non MS DOS oper...

Page 63: ... devices Restrict a device from booting the unit Run hard drive self tests Establish a supervisor password that controls access to Computer Setup F10 Utility and the settings described in this section Enable or disable removable media boot ability Using Computer Setup F10 Utilities Computer Setup can be accessed only by turning the computer on or restarting the system To access the Computer Setup ...

Page 64: ...e the CMOS could become corrupted It is safe to turn off the computer only after exiting the F10 Setup screen Computer Setup Main NOTE Support for specific Computer Setup options may vary depending on the hardware configuration Table A 6 Computer Setup Main Option Description System Time Allows you to set system time System Date Allows you to set system date Language Allows you to select language ...

Page 65: ... Memory Bank 1 Memory Bank 2 BIOS Revision Core Version Model Number Product Number Asset Tag press Enter to change Computer Setup Advanced NOTE Support for specific Computer Setup options may vary depending on the hardware configuration WARNING Setting items on this menu to incorrect values may cause your system to malfunction Table A 7 Computer Setup Advanced Option Description CPU Type view onl...

Page 66: ...up Power NOTE Support for specific Computer Setup options may vary depending on the hardware configuration Table A 8 Computer Setup Power Option Description After AC Power Failure Allows you to select system restart behavior after power loss Auto Power On Stay Off NX No Execute Disables enables NX bit Virtualization Technology Allows you to enable disable Virtualization Technology VT VT enables a ...

Page 67: ...cess the boot menu during boot F9 Diagnostics Enables disables the ability to press the F9 key to access the Diagnostics menu during boo F10 Setup Enables disables the ability to press the F10 key to access the Setup menu during boo F11 Recovery Enables disables the ability to press the F11 key to access the recovery menu during boo F12 Boot from LAN Enables disables the ability to press the F12 k...

Page 68: ...ress Enter to exit saving changes Exit Discarding Changes Press Enter to exit discarding changes Load Setup Defaults Press Enter to load setup defaults Discard Changes Press Enter to discard changes Save Changes Press Enter to save changes 60 Appendix A Computer F10 Setup ...

Page 69: ...nfiguration error Check that the memory modules have been installed correctly and that proper modules are used 2 short beeps 1 long beep 3 second pause No graphics card installed or graphics card initialization failed For systems with a graphics card 1 Reseat the graphics card Power on the system 2 Replace the graphics card 3 Replace the system board For systems with integrated graphics replace th...

Page 70: ...blem with the expansion card 6 Replace the system board 5 short beeps 3 second pause BIOS recovery was successful No action required LED Codes The following table describes the LED states for the Compaq 500B and 505B MT Desktop PCs LED State LED Status Power LED Indicator System on normal operation Steady green Suspend to RAM Blinks green every 2 seconds Computer off LED not on Drive LED Indicator...

Page 71: ...the computer 7 Restart the computer and the system will boot to the CD 8 Click the appropriate language and click Next 9 Click Agree in the End User License Agreement page The utility launches with the Survey tab displayed Testing Memory Modules A faulty memory module or socket can lead to memory errors operating system crashes or frequent system lock ups Memory problems can be caused by overheati...

Page 72: ...en there are multiple errors happened during POST apply the following guideline If multiple errors include at least one critical error the system will shut down immediately after handling the first critical error If multiple errors do not include a critical error handle all serious errors first one by one and then proceed to alerts warnings For example if the BIOS detected a SMART error serious er...

Page 73: ...e BIOS will program the power button LED to alternate the color between the On ACPI S0 state and the Stand by S3 state In doing so the LED should not blink but stay constant Check with the corresponding platform manager for the default colors in the On and Stand by states The color of the power button LED in the Hibernate state ACPI S4 is the same as in the S5 state To find out if the system s pow...

Page 74: ...er Clearing CMOS The CLEAR CMOSjumper allows you to clear the Real Time Clock RTC RAM in CMOS You can clear the CMOS memory of date time and system setup parameters by erasing the CMOS RTC RAM data The onboard button cell battery powers the RAM data in CMOS which include system setup information such as system passwords To erase the RTC RAM WARNING Except when using this function do not remove the...

Page 75: ...e cap on pins 1 2 for 5 to 10 seconds 7 Replace the jumper on pins 2 3 8 Reinstall the battery 9 Replace the access panel external equipment and reconnect the power cord 10 Turn on the computer 11 Hold down the F1 key during boot and enter BIOS setup to re enter data Clearing CMOS 67 ...

Page 76: ...ore You Call for Technical Support If you are having problems with the computer try the appropriate solutions below to try to isolate the exact problem before calling for technical support Run the HP diagnostic tool Run the hard drive self test in Computer Setup Refer to the Computer Setup F10 Utility Guide for more information If the screen is blank plug the monitor into a different video port on...

Page 77: ...oftware see the following list of general suggestions before taking further action Check that the computer and monitor are plugged into a working electrical outlet Check that the computer is turned on and the green power light is on Check that the monitor is turned on and the green monitor light is on Turn up the brightness and contrast controls of the monitor if the monitor is dim Press and hold ...

Page 78: ...are unable to resolve it yourself or if you feel uncomfortable about performing the operation contact an authorized dealer or reseller WARNING When the computer is plugged into an AC power source voltage is always applied to the system board To reduce the risk of personal injury from electrical shock and or hot surfaces be sure to disconnect the power cord from the wall outlet and allow the intern...

Page 79: ...mputer is beeping a code See POST Error Warning Messages on page 64 to interpret the error code Solving Power Problems Common causes and solutions for power problems are listed in the following table Table C 2 Solving Power Problems The computer will not turn on Cause Solution Cables to the external power source are unplugged Check that the cables connecting the computer to the external power sour...

Page 80: ... increase the POST Delay in Advanced Power On Options Nonsystem disk NTLDR missing message Cause Solution The system is trying to start from the hard drive but the hard drive may have been damaged Try to reboot the computer from another bootable device such as a diskette or USB disk on key If the operating system boots from the new device either the hard drive is defective or the boot block is cor...

Page 81: ...rt is not responding Insert a USB device into an open USB port to test the USB If the device works properly go to the next step If the USB device also fails there is a problem with the USB port See the USB troubleshooting guide for help in this matter The internal memory card reader pin is bent Shine a flashlight into the empty card slots Check whether any pins inside are bent Disconnect the compu...

Page 82: ...able connection from the monitor to the computer and to the electrical outlet You may have a screen blanking utility installed or energy saver features are enabled Press any key or click the mouse button and if set type your password You are using a fixed sync monitor and it will not sync at the resolution chosen Be sure that the monitor can accept the same horizontal scan rate as the resolution c...

Page 83: ...Turn on the external speakers External speakers are plugged into the wrong audio jack Check the sound card documentation for proper speaker connection A device such as headphones is connected to the line out jack Turn on and use headphones or external speakers only connect to one device at a time Solving Keyboard and Mouse Problems If you encounter keyboard or mouse problems see the documentation ...

Page 84: ...rrect network driver Check the network controller documentation for the correct driver or obtain the latest driver from the manufacturer s Web site Network status link light is not working or never flashes NOTE The network status light is supposed to flash when there is network activity Cause Solution No active network is detected Check cabling and network equipment for proper connection Network c...

Page 85: ... to find out the status of the network Cannot connect to network server when attempting Remote System Installation Cause Solution The network controller is not configured properly Verify that the computer is properly connected to the network that a DHCP Server is present and that the Remote System Installation Server contains drivers for the network controller Solving Memory Problems If you encoun...

Page 86: ...C 11 Solving CD ROM and DVD Problems System will not boot from DVD drive Cause Solution DVD boot is not enabled in the BIOS Setup Utility Run the BIOS Setup Utility select Device Options from the Storage menu and enable removable media boot Verify the boot order and check that the DVD drives are listed in the boot order DVD device not detected or driver is not loaded Cause Solution Drive is not co...

Page 87: ...Solving Front Panel Component Problems If you encounter problems with devices connected to the front panel refer to the common causes and solutions listed in the following table Table C 12 Solving Front Panel Component Problems A USB device is not recognized by the computer Cause Solution The device does not have power If the USB device requires AC power be sure one end is connected to the device ...

Page 88: ... Some of these connectors may not be used on the product being serviced 4 Pin Power for CPU Connector and Icon Pin Signal 1 2 3 4 GND GND 12V CPU 12V CPU Ethernet BNC Connector and Icon Pin Signal 1 2 Data Ground USB Connector and Icon Pin Signal 1 2 3 4 5 VDC Data Data Ground 80 Appendix D Connector Pin Assignments ...

Page 89: ...1 8 miniphone Pin Signal 1 2 3 1 Tip 2 Ring 3 Shield Audio_left Power_Right Ground Line in Audio Connector and Icon 1 8 miniphone Pin Signal 1 2 3 1 Tip 2 Ring 3 Shield Audio_In_Left Audio_In_Right Ground Line out Audio Connector and Icon 1 8 miniphone Pin Signal 1 2 3 1 Tip 2 Ring 3 Shield Audio_Out_Left Audio_Out_Right Ground Microphone 81 ...

Page 90: ...und Ground Ground Ground 13 14 15 Horizontal Sync Vertical Sync DDC Serial Clock 24 Pin Power Connector 24 12 13 1 Front Pin Signal Pin Signal Pin Signal Pin Signal 1 2 3 4 5 6 3 3V 3 3V GND 5V GND 5V 7 8 9 10 11 12 GND POK 5 Vaux 12V 12V 3 3V 13 14 15 16 17 18 3 3V 12V GND PSON GND GND 19 20 21 22 23 24 GND open 5V 5V 5V GND 82 Appendix D Connector Pin Assignments ...

Page 91: ...SVD GND PERp4 36 37 38 39 40 PERn4 GND GND PERp5 PERn5 41 42 43 44 45 GND GND PERp6 PERn6 GND 46 47 48 49 50 GND PERp7 PERn7 GND RSVD 51 52 53 54 55 GND PERp8 PERN8 GND GND 56 57 58 59 60 PERp9 PERn9 GND GND PERp10 61 62 63 64 65 PERn10 GND GND PERp11 PERn11 66 67 68 69 70 GND GND PERp12 PERn12 GND 71 72 73 74 75 GND PERp13 PERn13 GND GND 76 77 78 79 80 PERp14 PERn14 GND GND PERp15 81 82 PERn15 GN...

Page 92: ... 38 39 40 GND PETp5 PETn5 GND GND 41 42 43 44 45 PETp6 PRTn6 GND GND PETp7 46 47 48 49 50 PETn7 GND PRSNT2 GND PETp8 51 52 53 54 55 PETn8 GND GND PETp9 PETn9 56 57 58 59 60 GND GND PETp10 PETn10 GND 61 62 63 64 65 GND PETp11 PETn11 GND GND 66 67 68 69 70 PETp12 PETn12 GND GND PETp13 71 72 73 74 75 PETn13 GND GND PETp14 PETn14 76 77 78 79 80 GND GND PETp15 PETn15 GND 81 82 PRSNT2 RSVD Pin B informa...

Page 93: ... electronic device exposed to electrostatic discharge ESD may not appear to be affected at all and can work perfectly throughout a normal cycle The device may function normally for a while but it has been degraded in the internal layers reducing its life expectancy Networks built into many integrated circuits provide some protection but in many cases the discharge contains enough power to alter de...

Page 94: ... surface before removing them from their container Always be properly grounded when touching a sensitive component or assembly Avoid contact with pins leads or circuitry Place reusable electrostatic sensitive parts from assemblies in protective packaging or conductive foam Personal Grounding Methods and Equipment Use the following equipment to prevent static electricity damage to equipment Wrist s...

Page 95: ...ductive materials such as ordinary plastic assembly aids and Styrofoam Use field service tools such as cutters screwdrivers and vacuums that are conductive 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...

Page 96: ...r Lint dust and other foreign matter can block the vents and limit the airflow Be sure to unplug the computer before cleaning the air vents Never operate the computer with the cover or side panel removed Do not stack computers on top of each other or place computers so near each other that they are subject to each other s re circulated or preheated air If the computer is to be operated within a se...

Page 97: ...mpened with clear water For stubborn stains use isopropyl rubbing alcohol No rinsing is needed as the alcohol will evaporate quickly and not leave a residue After cleaning always wipe the unit with a clean lint free cloth Occasionally clean the air vents on the computer Lint and other foreign matter can block the vents and limit the airflow Cleaning the Keyboard Follow all safety precautions in Ge...

Page 98: ...re that the power to the computer is turned off Clean the mouse ball by first removing the retaining plate and the ball from the housing Pull out any debris from the ball socket and wipe the ball with a clean dry cloth before reassembly To clean the mouse body follow the procedures in Cleaning the Computer Case on page 89 Service Considerations Listed below are some of the considerations that you ...

Page 99: ...t they cannot be caught or snagged by parts being removed or replaced CAUTION When servicing this computer ensure that cables are placed in their proper location during the reassembly process Improper cable placement can damage the computer Hard Drives Handle hard drives as delicate precision components avoiding all physical shock and vibration This applies to failed drives as well as replacement ...

Page 100: ... of fire and chemical burn if the battery is handled improperly Do not disassemble crush puncture short external contacts dispose in water or fire or expose it to temperatures higher than 140ºF 60ºC Do not attempt to recharge the battery NOTE Batteries battery packs and accumulators should not be disposed of together with the general household waste In order to forward them to recycling or proper ...

Page 101: ...ial 400 700 mV Drive voltages 3 3 V 5 V 12 V Jumpers for configuring drive N A Data transfer rate 3 0 Gb s SATA Hard Drive Cables SATA Data Cable Always use an HP approved SATA 3 0 Gb s cable as it is fully backwards compatible with the SATA 1 5 Gb s drives Current HP desktop products ship with SATA 3 0 Gb s hard drives SATA data cables are susceptible to damage if overflexed Never crease a SATA d...

Page 102: ...drive partition A drive partition is the largest segment of a drive that may be properly accessed by the operating system A single hard drive may therefore be subdivided into a number of unique drive partitions in order to make use of all of its space Because of the differences in the way that drive sizes are calculated the size reported by the operating system may differ from that marked on the h...

Page 103: ...dited agency responsible for evaluation in the country where the power cord set will be installed 2 The power cord set must have a minimum current capacity of 10A 7A Japan only and a nominal voltage rating of 125 or 250 volts AC as required by each country s power system 3 The diameter of the wire must be a minimum of 0 75 mm2 or 18AWG and the length of the cord must be between 1 8 m 6 feet and 3 ...

Page 104: ... fittings appliance coupler and wall plug must bear the certification mark of the agency responsible for evaluation in the country where it will be used 2 The flexible cord must be Type SVT or equivalent No 18 AWG 3 conductor The wall plug must be a two pole grounding type with a NEMA 5 15P 15A 125V or NEMA 6 15P 15A 250V configuration 3 Appliance coupler flexible cord and wall plug must bear a T ...

Page 105: ...um rate of change is 10 C Hr The upper limit may be limited by the type and number of options installed Shock The level of shock the product can withstand with no damage being incurred is 35 G peak input acceleration during an 11 millisecond trapezoidal shock pulse Vibration Operating Non operating Random vibration 0 25 G nominal 5 Hz at 0 00025 G Hz 10 Hz at 0 01 G Hz 100 Hz at 0 01 G Hz 300Hz at...

Page 106: ...ls LWAd and declared average desktop seated operator position A weighted sound pressure levels LpAm when the product is operating in a 23 C 73 4 F ambient environment NOTE Noise emissions were measured in accordance with ISO 7779 ECMA 74 and declared in accordance with ISO 9296 ECMA 109 Table H 1 Specifications continued 98 Appendix H Specifications ...

Page 107: ...cables 21 installing 21 removal and replacement 21 E electrostatic discharge ESD preventing damage 86 error codes beeps 61 LEDs 62 ethernet BNC pin assignments 80 expansion card sockets 12 expansion slot cover replacing 16 F fan power supply 90 removal and replacement 33 front bezel removal and replacement 6 front I O device removal and replacement 31 front panel problems 79 G general problems 70 ...

Page 108: ...al and replacement 36 R removal and replacement access panel 4 battery 46 drives 21 fan 33 front bezel 6 front I O device 31 heat sink 34 35 memory 8 MT processor 38 power supply 39 power switch 32 processor 36 system board 45 removing hard drive 26 optical drive 23 S safety and comfort 68 safety precautions cleaning 89 SATA connectors on system board 93 data cable pinouts 93 hard drive characteri...

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HP Compaq 500B Microtower, Maintenance And Service Manual

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Summary of Contents for Compaq 500B Microtower

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