Compaq 1257 manuals
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When we buy new device such as Compaq 1257 we often through away most of the documentation but the warranty.
Very often issues with Compaq 1257 begin only after the warranty period ends and you may want to find how to repair it or just do some service work.
Even oftener it is hard to remember what does each function in Laptop Compaq 1257 is responsible for and what options to choose for expected result.
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142 pages 3.08 Mb
2 Welcome to the Maintenance & Service Guide for the Presariothrough 1267 seriesNotice Preface Product Description Troubleshooting Illustrated Parts Catalog Removal & Replacement Procedures Specifications Connector Pin Assignments Battery Pack Operations 3 This online guide is designed to serve the needs of those whose job it is torepair Compaq productsMaintenance & Service Guide This Guide will be periodically maintained and updated online as needed For content comments or questions, contact the Editor 4 Notice5 First Edition (February 1999)Compaq Computer Corporation 6 Maintenance & Service GuidePrefaceMaintenance and Service Guide SymbolsThe following words and symbols mark special messages throughout this guide WARNING: CAUTION: IMPORTANT: NOTE: Technician Notes 7 Serial NumberLocating Additional InformationThe following documentation is available to support this product: ●Compaq Presario 1200 Series Portable Computer documentation set ●Introducing Windows 95 Guide ●Service Training Guides ●Compaq Service Advisories and Bulletins ●Compaq QuickFind ●Compaq Service Quick Reference Guideprivacy and legal statement 8 Product Description10 TroubleshootingIf the problem is intermittent, check the NOTE: computer several times to verify that the problem is solved 11 NOTE:12 Illustrated Parts CatalogSystem Unit Cables Boards Miscellaneous Hardware & Display Assembly Mass Storage Devices Miscellaneous Parts Documentation & Software 13 Removal and Replacement Procedures14 Battery Charger BoardDisplay Panel Assembly Memory Module 15 SpecificationsSysteminterrupts Memory Expansion System DMA Battery Pack System I/O Address Diskette Drive System memory Catalog Hard Drive Physical & environmental CD Drive Display Physical and EnvironmentalComputer Specifications U.S Metric Dimensions 1.97 in 4.95 cm HeightDepth 12.20 in 31.00 cm Width 10.08 in 25.40 cm 16 WeightModel Stand-Alone(Battery Pack) Power Requirements Nominal Operating Maximum Average Peak Operating AC Power Requirements 7.326 LB NiMH W @ 9.6 V W @ 9.6 V W @ 9.6 3.33kg Li-ion W @ 14.4 V W @ 14.4 V W @ 14.4 Operating Voltage Operating Current Operating Frequency Maximum Transient Temperature 0.8/0.4 A RMS 47-63Hz Meets IEC 801-4and IEC801-5 1kV for 50 ns Operating Non-operating Relative Humidity (non-condensing) Non-operating(tw = 38.7°C max) Altitude Shock 50° to 95 °F -4°to 140 °F 10 to 90% 5 to 95% 0 to 10,000 ft 0 to 30,000 ft 10° to 35 °C -20°to 60 °C 35°C to 90% 60°C to 95% 0 to 3.15 km 0 to 9.14 km Non operating Vibration 10 G, 11 ms, half sine 240 G, 2 ms, half sine 0.5G 1.5G Return to the Top 17 Compaq HomeSearch Products Service Worldwide Compaq.com Comments Legal Notices and Privacy Statement United States 18 Connector Pin AssignmentsRear Connectors Click on a link: ●Parallel Connector ●Serial Connector ●Keyboard/Mouse ●External VGA Monitor ●Universal Serial Bus ●Modem Parallel Connector 19 PinSignal Strobe Acknowledge Data Bit Busy Paper Out Select Auto Linefeed Error Initialize Printer Select In Signal Ground * = Active low Return to the top Serial Connector Connector Carrier Detect Receive Data Transmit Data Data Terminal Ready Data Set Ready Ready to Send Clear to Send Ring Indicator 20 Keyboard/MouseData Ground Clock External VGA Monitor Red Analog Green Analog Blue Analog Not connected Ground Analog 21 DataData + Ground 23 Battery Pack Operating Time●Increase battery pack operating time ●Conditioning a battery pack ●Disposal of a used battery pack Increasing Battery Pack Operating Time●Power management settings ●Hardware configuration ●Software applications ●Installed options ●Display brightness ●Hard drive usage ●Changes in operating temperature ●Type and number of installed PC Cards Minimizing the Energy RequiredTo minimize the energy required by the computer, follow these steps: 1.Set the power conservation levels in the Power Management utility to Maximum Maximum on the values selected 24 Maximizing the Energy StoredTo maximize the energy stored in the battery pack, follow these guidelines: ●Store the battery pack in a cool, dry place when not in use Return to the top of this page Conditioning a Battery PackCAUTION: To condition a battery pack, complete the following steps: 3.Your battery is re- conditioned 4.Plug in the AC adapter and begin using the computer The table below shows the approximate battery pack charge times Approximate Battery Charge Time Computer On Line Off Line NiMH Battery Pack 4.0 hours premature termination 2:00 hrs Li ion Battery Pack 4.5 hours premature termination 2:50 hrs 25 Disposal of a Used Battery Pack26 Models & Features28 Controls and LightsControls and Lights Bottom of Unit Rear Connectors Power Management for Windows Front Panel Components 1.Display 2.Power Button 3. Keyboard 4. TouchPad 5. Speakers & Ports 6. Palmrest 7.(L) TouchPad Button 8.(R) TouchPad Button 29 9. InstantInternet Access 10. Instant Search 11. Scroll up/down Button 12.Instant E- Commerce Button (or favorite website) 13. Instant E-mail 14. Power Light 15. Battery Charge 16. AC Adapter 17. Headphone Jack 18. Volume Down 19. Volume Up Button 20. Microphone Jack 21. Number Lock Light 22. Cap Lock Light 23. Scroll 31 Left Side Components33 Right Side ComponentsModels and Features Controls and Lights Left Side Components Right Side Components Bottom of Unit Rear Connectors Power Management for Windows 1.Battery Compartment 2.CD Drive 3.CD Drive Eject Button 34 Bottom of Unit35 Rear ConnectorsPower Management for Windows 1.AC Adapter 2.Parallel Printer Port 3.Serial Port 4.Fan Exhaust 5. External Monitor Port 6. USB Keyboard/ Mouse Port 8.Modem Jack 36 9. Security Slot37 Power Management for Windows38 Preliminary Steps48 Diagnostic Error Codes49 501 throughHard Drive Test 2402 through Video Test 2458 through Audio Test Touch Pad Pointing Device Test 8601 through CD Test 3301 through Processor Test Error Codes Error Code Description Recommended ActionCPU test failed Replace the processor and retest Coprocessor or Weitek Error Run the Configuration and Diagnostics Utilities Replace the processor board and retest DMA page registers test failed Replace the system board and retest Interrupt controller master test failed Port 61 error Keyboard controller self-testfailed CMOS RAM test failed CMOS interrupt test failed CMOS clock test failed Programmable timer load data test Protected mode test failed Speaker test failed Check system configuration Verify cable connections to speaker Memory Test Error CodesMemory machine ID test failed Memory system ROM checksum failed Write/Read test failed 1.Flash the system ROM and retest 2.Replace the system board and retest 1.Remove the memory module and retest Address test failed Random pattern test failed Noise test failed Random address test failed 2.Install a new memory module and retest Return to the top 50 Keyboard Test Error CodesFailed ID Test Check the keyboard connection. If disconnected, turn off the computer Failed Selftest/Interface Test and connect the keyboard Failed Individual Key Test Replace the keyboard and retest Failed Keyboard Repeat Test Parallel Printer Test Error CodesPrinter failed or not connected Connect the printer Check power to the printer Failed Port Test Install the loop-backconnector and Check port and IRQ configuration Printer pattern test failed 51 Serial Test Error CodesSerial port test failed 1. Check port configuration 2. Replace the system board and retest Hard Drive Test Error CodesHard drive format test failed 1. Run the Configuration and Diagnostics Utilities and verify drive Hard drive read test failed type Hard drive write/read/compare 2. Verify that all secondary drives have test failed secondary drive capability 3. Replace the hard drive and retest Hard drive random seek test failed 4. Replace the system board and retest Hard drive controller test failed Hard drive ready test failed Hard drive recalibration test failed Hard drive format bad track test Hard drive reset controller test Hard drive park head test failed Hard drive head select test failed Hard drive conditional format test Hard drive ECC* test failed Hard drive power mode test failed Network preparation test failed Drive monitoring test failed *ECC = Error Correction Code Return to the top 52 Video Test Error CodesVideo controller test failed Video memory test failed Video attribute test failed Video character set test failed Video 80 × 25 mode 9 × 14 character cell test failed Video 80 × 25 mode 8 × 8 character cell test failed Video 40 × 25 mode test failed Video 320 × 200 mode color set 0 test failed Video 320 × 200 mode color set 1 test failed Video 640 × 200 mode test failed Video screen memory page test failed Video gray scale test failed Video white screen test failed Video noise pattern test failed The following apply to error codes 501- xx through 516-xx: 1.Disconnect external monitor and test with internal LCD display 2.Replace the display assembly and retest 3.Replace the system board and retest The following steps apply to error codes 2402-xxthrough 2456-xx: 1.Run the Configuration and Diagnostics Utilities 2416-xxVideo noise pattern test failed 2418-xxECG/VGC memory test failed 2419-xx ECG/VGC ROM checksum test failed 2421-xxECG/VGC 640 × 200 graphics mode test failed 2422-xxECG/VGC 640 × 350 16 color set test failed 2423-xxECG/VGC 640 × 350 64 color set test failed 2424-xxECG/VGC monochrome text mode test failed 2425-xxECG/VGC monochrome graphics mode test failed 2431-xx640 × 480 graphics test failure 2432-xx320 × 200 graphics (256 color mode) test failure 2448-xx Advanced VGA Controller test failed 2451-xx 132-columnAdvanced VGA test failed 2456-xxAdvanced VGA 256 Color test failed 2.Disconnect external monitor and test with internal LCD display 3.Replace the display assembly and retest Advanced VGA BitBLT test The following step applies to error codes 2458-xxthrough 2480-xx: Advanced VGA DAC test Advanced VGA data path test Advanced VGA LineDraw test 53 Audio Test Error CodesAudio System Internal Error 54 TouchPad/Pointing Device Interface Test Error CodesMouse test failed 1. Replace the TouchPad and retest Interface test failed CD Drive Test Error CodesCD drive read test failed 1. Replace the CD and retest Verify that the speakers are connected CD drive seek test failed Verify that drivers are loaded and properly installed ID test failed Replace the CD drive and retest Read test failed Controller test failed Random read test failed or return to the Troubleshootingindex page 55 Return to the Troubleshootingindex page57 Solving Minor ProblemsSolving Audio ProblemsSome common audio problems and solutions are listed in the following table Solving Audio Problems This is typical; it indicates successful No action is required On Self-Test(POST) completion of the Power-On Self-Test (POST) Solving Battery Pack and Battery Gauge ProblemsSolving Battery Pack and Battery Gauge Problems Computer won't turn on when Battery pack is discharged Connect the computer to an external battery pack is inserted and power power source and charge the battery cord is unplugged pack Replace the battery pack with a fully charged battery pack Check the battery connectors on the system board to verify they are evenly spaced and that they are not bent or brokenComputer is beeping and battery LED 58 Battery charge is lowImmediately save any open file(s) icon is blinking Then do any one of the following: Connect the computer to an external power source to charge the battery pack Turn off the computer or initiate Hibernation until you can find another power source or charge the battery pack Computer battery LED icon (front onVolume is turned down too low the unit) blinks to indicate lowbattery condition, but computer does not beep Battery LED icon doesn't light andBattery pack is already charged battery pack won't fast charge Battery pack was exposed to temperature extremesBattery pack is at end of its life You have to set the date and time RTC battery is deadevery time you turn on the computer Adjust the volume No action is necessary Allow time for the battery pack to return to room temperature Replace battery pack Replace the RTC battery Battery charge does not last as long as expected Battery is being exposed to high temperatures or extremely cold temperaturesor recommended storage range Battery pack is warm to the touch after charging Battery has partially self-discharged Power management is disabled An external device or PC Card is draining the battery Normal warming has occurred due to charging Power management is turned off or disabled Recharge the battery. Discharge the battery completely and then recharge it Set a power management level in Computer SetupTurn off or disconnect external devices when not using them Enable power management in Computer Setup and in Windows Power Properties Battery pack has partially self- discharged (10° C to 40° C) Storage: -4°F to 86° F (-20°C to 30° C ) Recharge the battery pack 59 Solving CD Drive ProblemsSolving CD Drive Problems CD drive cannot read a compact disc Compact disc is upside down or is Open the CD loading tray, lay theimproperly inserted in the CD drive compact disc in it (label side up) then close the tray CD is CD Plus or Pregap/Track Cannot read these type CDs in type Remove the CD Solving Diskette and Diskette Drive ProblemsSolving Diskette and Diskette Drive Problems Problem Probable Cause Solution(s) Diskette drive cannot write to a Diskette is write-protected Disable the diskette's write-protect diskette feature or use a diskette that is not write-protected Computer is writing to the wrong drive Not enough space is left on the diskette Check the drive letter in the path statement Use another diskette Drive error has occurred Run Computer Checkup from the Compaq Diagnostics diskette Diskette is not formatted Format the diskette. At the system prompt, enter FORMAT A: Diskette drive cannot read a diskette The wrong type of diskette is being Use the type of diskette required by used the drive Diskette has a bad sector Copy files to hard drive or another diskette. Reformat bad floppy Diskette is not formatted Cannot boot from diskette Bootable diskette is not in drive A Diskette Boot has incorrect setting in Computer Setup Put the bootable diskette in drive A Run Computer Setup and set diskette as first to boot 60 Solving Display Problems1.Turn off the monitor 2.Turn off the computer 3.Disconnect the monitor signal cable from the computer 4.Turn on the monitor and allow it to warm up for one minute Solving Display Problems Screen is dim Control for brightness or contrast (if applicable) is not set properly Computer screen is in direct light Adjust the Brightness of the display by using Fn + F7 or Fn + F8 Adjust the Contrast of the display by using Fn + F5 or Fn + F6 Tilt display or move computer Screen is blank Screen save was initiated by Power Press any key or touch the Touch Pad Management due to lack of user activity Display has overheated If computer is in direct sunlight, move it and allow it to cool off Display is blank and the Suspend icon is flashing System is in Suspend mode Display function was switched to the external monitor Press any key or touch the Touch Pad Use Fn + F3 to switch between LCD or CRT LCD CRT Using 1024 × 768 or higher Restart the computer resolution on external monitor and have toggled back to internal display which supports up to 800 × Improper backlight or display cable connections 61 Defective inverter boardDefective display cableDefective display panel. Defective system board Defective system board Replace the display assembly Replace the display assembly. Replace the system board Replace the system board Backlight (brightness) cannot be adjusted Improper display cable with Fn + F7 or connections Fn + F8 Contrast cannot be adjusted with Fn + F5 or Fn + F6 1.Reseat the display cable to the system board 2.Replace the display assembly This display panel has a continuous pattern Reseat the display cable to the across it (e.g., a "jailbars" pattern), has a connections following until the problem is solved: single color on it, or has garbled graphics across the entire panel. This failure is for System board patterns across the entire panel (not just on one section) Display assembly Ghost bars extending from graphics on the Common characteristic of Change the background colors display STN displays Adjust the Contrast of the display by using Fn + F5 or Fn + F6 A single line, small group of lines, or block Defective display panel appears on the display panel. This failureoccurs in only a section of the display panel NOTE: 62 Solving Hard Drive ProblemsSolving Hard Drive Problems Reading hard drive takes an System entered Hibernation due to Give the system time to restore the unusually long time after restarting low battery condition and is now previously saved data to its exact the computer exiting from it state before Hibernation Hard drive error occurs Hard drive has bad sectors or has Run Computer Checkup failed Hard drive does not work Hard drive is not seated properly Turn off and unplug the computer remove the battery pack, and remove and then reinstall the hard drive 63 Solving Hardware Installation ProblemsSolving Hardware Installation Problems Solutions(s) A new device is not recognized as part Cable(s) of new external device are Ensure that all cables are properly of the computer system loose or power cables are and securely connected unplugged Power switch of new external device Turn off the computer, turn on the is not turned on external device, then turn on the computer to integrate the device with the computer system Device is not seated properly Turn off the computer and reinsert the device Solving Keyboard/Numeric Keypad ProblemsSolving Keyboard/Numeric Keypad Problems Embedded numeric keypad on computer Num Lock function is not enabled Press the Shift+NumLk keys to Shift NumLk keyboard is disabled enable the Num Lock function and embedded numeric keypad. The Num Lock icon on the status panel turns on Embedded numeric keypad is disabled and External numeric keypad is Disconnect the external numeric Num Lock function is on connected to the computer keypad from the computer 64 or return to the Troubleshootingindex page65 Contacting Compaq SupportShipping Preparation 67 System UnitSystem Unit Boards Display Assembly Mass Storage Devices Miscellaneous Cable Kit Cables Miscellaneous Hardware and Plastics Kit Miscellaneous Parts Documentation and Software 69 BoardsSystem Unit Place cursor over each device to attain its part numberBoards Mass Storage Devices Cable Kit Cables Hardware and Plastics Kit Parts Documentation and Software Modem, K-56.0Kbps Data/Fax w/o SRAM (US, Canada, Latin America) 71 Display Panel Assembly:73 Mass Storage DevicesSystem Unit Boards Mass Storage Devices Miscellaneous Cable Kit Cables Miscellaneous Hardware and Plastics Kit Miscellaneous Parts Documentation and SoftwareHard Drives w/Mounting Brackets 75 Miscellaneous Cables KitPlace cursor over each device for a description of that item 76 Power CordModem Cables 78 Miscellaneous Hardware and Plastics Kit80 Miscellaneous PartsMiscellaneous Screw Kit (Not Shown) 82 Documentation and Software84 Electrostatic DischargeGenerating StaticRelative Humidity 85 Event10% 40% 55% Walking across carpet 35,000 15,000 7,500 Walking across vinyl floor 12,000 5,000 3,000 Motions of bench worker 6,000 Removing DIPS from plastic 2,000 tubes Removing DIPS from vinyl trays 11,500 4,000 Removing DIPS from Styrofoam 14,500 3,500 Removing bubble pack from 26,000 20,000 7,000 PCBs Packing PCBs in foam-linedbox 21,000 11,000 Return to Removal & Replacement Procedures 86 Tool and Software RequirementsScrews87 Return to Removal & Replacement Procedures88 Cables and Connectors●Handle cables by the connector whenever possible Handle flex cables with extreme care; they can tear easily Select the desired illustration●Removing a Cable from a ZIF Connector ZIF Connector ●The ribbon cable position for the 3.2-GB, 4.0-GB,and 6.4-GBhard drive ●The ribbon cable position for the CD drive CD drive ●The ribbon cable position for the diskette drive diskette drive ●The cable position for the speaker assembly speaker assembly Plastic Parts 90 Preparing the Computer for DisassemblyElectrostatic Discharge Service Considerations Cables and Connectors Preparing the Computer for Disassembly Battery Pack Palmrest Cover with Touch Pad Heatspreader Keyboard Processor Hard Drives CD Drive Battery Charger Board Modem Display Panel Assembly Upper CPU Cover Speaker Assembly Diskette Drive Fan Assembly System Board 1.Disconnect AC power and any external devices 2.Remove the battery pack 3.Remove any PC Cards NOTE: not respective screws with their associated sub-assembly 91 Dip SwitchSettings Memory Module Return to Removal & Replacement Procedures 92 Removing the Battery Pack94 Removing the Palmrest Cover with Touch PadElectrostatic Discharge Considerations Cables and Preparing the Computer for Disassembly Battery Pack Palmrest Cover with Touch Pad Heatspreader Keyboard Processor CD Drive Battery Charger Board Display Panel Upper CPU Cover It is not necessary to remove the display panel NOTE: assembly to access the interior components of the computer To remove the palmrest cover with touch pad, complete the following steps: 1.Prepare the computer for disassembly 95 Speaker2. Close the computer and turn the computer upside Diskette Drive down Fan Assembly 3. Remove four System Board screws from the Dip Switch bottom of the Settings computer Memory Next Step Module 96 Removing the Heatspreader98 Removing the Keyboard99 heatspreader5.Disconnect the flex cable from the ZIF connector on the system board 6.Disconnect the flex cable from the ZIF connector on the system board To replace the keyboard, reverse the previous procedures Return to Removal & Replacement Procedures 100 Removing the Processor102 Removing the Hard Drive104 Removing the CD Drive112 Removing the Upper CPU Cover114 Removing the Speaker Assembly115 drive7.Remove the Upper CPU cover 8.Remove the charger board To replace the speaker assembly, reverse the previous procedures 116 Removing the Diskette Drive117 7.Remove battery charger board8.Remove the screw from the diskette drive and lift up the diskette drive Ensure the diskette drive eject lever is properlyNOTE: inserted in the chassis slot, when replacing the diskette drive 118 Removing the Fan Assembly120 Removing the System Board121 Memory Module10.Remove the battery charger board 11.Remove the diskette drive 12.Remove the CD drive 13.Remove the fan 14.Disconnect the speaker assemblycables 124 Removing the Memory Module136 Specifications
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