Page 1 Thank you for purchasing this Factory Service Manual CD/DVD from servicemanuals4u.com. Please check out our eBay auctions for more great deals on Factory Service Manuals: servicemanuals4u...
Page 2: Specifications
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 3 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 Technician Notes, and Serial Number locations on the unit. This MSG will be periodically maintained and updated online as needed. For content comments or questions, contact the...
Page 4 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 5 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 First Edition ( October 1999 Compaq Computer Corporation 1.800.AT.COMPAQ privacy and legal statement file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20chec...SERIES%201246%201277%201278%201279/notice.html (2 of 2)6/27/2004 2:33:30 AM...
Page 6 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 7: Technician Notes
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 Text set off in this manner presents commentary, sidelights, or interesting points of NOTE: information. Technician Notes WARNING: Only authorized technicians trained by Compaq should repair this equipment.
Page 8: Product Description
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
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Page 10: Troubleshooting
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models : 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
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Page 12 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 13 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 1.800.AT.COMPAQ privacy and legal statement file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20check...0SERIES%201246%201277%201278%201279/illust.html (2 of 2)6/27/2004 2:33:32 AM...
Page 14: Serial Number Location
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 15: Charger Board
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 Processor Hard Drive CD Drive Battery Charger Board Modem Display Panel Assembly Upper CPU Cover Speaker Assembly Diskette Drive Fan Assembly System Board Dip Switch...
Page 16: Physical And Environmental
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models : 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 17: System Interrupts
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models : 1246, 1277, 1278, and 1279 Dimensions (models with 12.1" display) 1.97 in 5.0 cm Height 12.20 in 31.3 cm Depth 10.12 in 25.7 cm Width (model 1277 with 13.0" display) 1.97 in...
Page 18: System Dma
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models : 1246, 1277, 1278, and 1279 System Interrupts Hardware IRQ System Function IRQ0 System Timer IRQ1 Standard 101/102-Key or Microsoft Natural Keyboard IRQ2 Programmable interrupt controller IRQ3 IRQ Holder for PCI Steering...
Page 19 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models : 1246, 1277, 1278, and 1279 System I/O Address System I/O Address I/O Address (Hex) System Function (Shipping Configuration) 0000 - 000Fh Direct memory access controller 0020h - 0021h...
Page 20 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models : 1246, 1277, 1278, and 1279 1000h - 103Fh Motherboard Resources 1040h - 105Fh Motherboard Resources 1060h - 106Fh ESS SOLO-1 PCI AudioDrive 1070h - 107Fh ESS SOLO-1 PCI AudioDrive...
Page 21: Memory Expansion
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models : 1246, 1277, 1278, and 1279 FC120000h - FC13FFFFh RAGE LT PRO AGP 2X (English) FD000000h - FDFFFFFFh RAGE LT PRO AGP 2X (English) FFFC0000h - FFFFFFFFh Motherboard Resources Display 12.1"...
Page 22 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models : 1246, 1277, 1278, and 1279 64-MB 64-MB 128-MB 64-MB 128-MB 192-MB Diskette Drive Diskette Drive Diskette Size 3.5 in Light None Height .5" / 1.27 cm Bytes per Sector: Sectors per Track 18 (1.44-MB) / 15 (1.2-MB)
Page 23: Environmental Requirements
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models : 1246, 1277, 1278, and 1279 CD Drive 24x CD Drive CD-DA, CD-ROM, CD-ROM XA, CD-1, Applicable Disk Photo CD (multisession), Video CD, CD- R, CD-Extra (CD+), CD-G, CD-RW .6"...
Page 24 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models : 1246, 1277, 1278, and 1279 Modem Compliance ITU v.90~6 standard Full ITU-T V.34 compliance Full compliance with: V.21, V.22, V.22bis, V.23, V.32, V.32bis, Bell 103, Bell 212A Data Compression V.42bis/MNP 5...
Page 25: Connector Pin Assignments
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 26: Serial Connector
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 Data Bit 6 Select In* Data Bit 7 18-25 Signal Ground * = Active low Serial Connector Connector Signal Carrier Detect Receive Data Transmit Data...
Page 27 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 Data 1 Data 2 Ground +5 V Clock 1 Clock 2 External VGA Monitor Connector Signal Red Analog Green Analog Blue Analog Not connected...
Page 28: Universal Serial Bus
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 Horizontal Sync Vertical Sync DDC2B Clock Universal Serial Bus Connector Signal Data - Data + Ground Modem Connector Signal Unused Unused Ring Unused Unused 1.800.AT.COMPAQ...
Page 29 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 30 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 The power consumption requirements for PC Cards vary widely. Some cards drain NOTE: the battery pack very rapidly. Battery pack operating time can be increased by as much as 50 percent by controlling the energy required by the computer and the energy stored in the battery pack.
Page 31 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 3. Your battery is reconditioned. 4. Plug in the AC adapter and begin using the computer. The table below shows the approximate battery pack charge times.
Page 32: Models And Features
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 33: System Memory
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 Power Hard Drive 4.8-GB 4.8-GB Management CD Drive 24x CD-ROM 24x CD-ROM for Windows Modem 56.0 Kbps PCI data/fax 56.0 Kbps PCI data/fax System...
Page 34 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
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Page 36 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 37: For Windows
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 Power Management for Windows 1.800.AT.COMPAQ privacy and legal statement file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20check...RIES%201246%201277%201278%201279/fbezellts.html (2 of 2)6/27/2004 2:33:39 AM...
Page 38 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 39 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 7. Instant Power E-Mail Management Button for Windows 1.800.AT.COMPAQ privacy and legal statement file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20check...RIES%201246%201277%201278%201279/fbezelbtn.html (2 of 2)6/27/2004 2:33:40 AM...
Page 40: Left Side Components
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 41 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 privacy and legal statement file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20check...SERIES%201246%201277%201278%201279/leftsid.html (2 of 2)6/27/2004 2:33:41 AM...
Page 42: Right Side Components
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
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Page 44 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 45 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 46 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 Power Modem Management Jack for Windows 1.800.AT.COMPAQ privacy and legal statement file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20chec...SERIES%201246%201277%201278%201279/connec.html (2 of 2)6/27/2004 2:33:43 AM...
Page 47 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 48 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 Power Management Properties Tab: Power Schemes: Plugged in Running on Batteries Always on System Standby: Never 15 minutes Turn OFF Monitor After 3 hours...
Page 49: Hibernation Mode
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 CAUTION: While in Sleep mode, your computer maintains system information and open files. Unsaved information is lost if you turn off your system prior to system wake-up, or if you lose power while using the AC adapter.
Page 50: Battery Operating Time
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 a cold start) press and hold down the Power Button for at least four seconds, which will cause a manual shutdown. Then, restart it with a single press of the Power Button. If it still doesn't recover, do the following: 1.
Page 51: Preliminary Steps
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models : 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 52 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models : 1246, 1277, 1278, and 1279 When the preliminary steps are completed, you are ready to run POST. 1.800.AT.COMPAQ privacy and legal statement file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20chec...SERIES%201246%201277%201278%201279/prelim.html (2 of 2)6/27/2004 2:33:45 AM...
Page 53 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 54: Remove The Keyboard
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 Cover with Touch Pad. 5. Remove the heatspreader. 6. Remove the keyboard. 7. Remove RTC battery for 30 seconds and replace it. 8. Reassemble the computer.
Page 55 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 56 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 Code Beeps POST Routine Description Verify Real Mode Disable Non-Maskable Interrupt (NM) Get CPU type Initialize system hardware Initialize chipset with Initial POST values...
Page 57 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 1-3-4-2 RAM failure on address line xxxx* 1-3-4-3 RAM failure on data bits xxxx* of low byte of memory bus Enable cache before system BIOS shadow...
Page 58 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 Jump to UserPatchI Configure advanced cache registers Initialize Multi Processor APIC Enable external and CPU cache Setup System Management Mode (SMM) area Display external L2 cache size...
Page 59 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 Build MPTABLE for multi-processor boards Install CD ROM for boot Clear huge ES segment register Fixup Multi Processor table Search for option ROMs. One long, two short beeps on checksum...
Page 60 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 Try to boot with INT 19 Initialize POST Error Manager (PEM) Initialize error logging Initialize error display function Initialize system error handler PnPnd dual CMOS (optional)
Page 61 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 Initialize Video Initialize beeper Initialize boot Clear Huge segment Boot to Mini DOS Boot to Full DOS privacy and legal statement file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20chec...SERIES%201246%201277%201278%201279/power1.html (7 of 7)6/27/2004 2:33:47 AM...
Page 62: Compaq Diagnostics
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 63 5. Press Enter to continue. The Diagnostics menu appears. 6. Select Computer Checkup from the Diagnostics menu. A Test Option menu appears. 7. Select View the Device List from the Test Option menu. A list of the installed Compaq devices appears.
Page 64 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 11. Exit the Test Option menu. 12. Exit the Diagnostics menu. View System Information (INSPECT) The View System Information (INSPECT) utility provides information about the computer and installed or connected devices.
Page 65: Diagnostic Error Codes
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 66 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 Processor Test Error Codes Error Code Description Recommended Action 101-xx CPU test failed Replace the processor and retest. 102-xx Coprocessor or Weitek Error 1. Run the Configuration and Diagnostics Utilities.
Page 67 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 301-xx Failed Selftest/Interface Test 2. Replace the keyboard and retest. 302-xx Failed Individual Key Test 3. Replace the system board and retest. 304-xx Failed Keyboard Repeat Test...
Page 68 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 diskette power and signal cables Failed Diskette Write/Read/Compare 603-xx and retest. Test 604-xx Failed Diskette Random Read Test 3. Replace the diskette drive and...
Page 69 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 2402-xx Failed Video Memory Test 1. Run the Configuration and Diagnostics Utilities 2403-xx Failed Video Attribute Test 2404-xx Failed Video Character Set Test 2. Replace the display assembly Failed Video 80 x 25 mode 9 x 14 and retest.
Page 70 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 2477-xx Advanced VGA Data Path Test 2478-xx Advanced VGA BitBLT Test 2480-xx Advanced VGA LineDraw Test Audio Test Error Codes 3206-xx Audio System Internatl Error Replace the system board and retest.
Page 71: Troubleshooting Without Diagnostics
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 72 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 Verify that all required changes have been made to the CONFIG.SYS file. Verify that all required changes have been made to the AUTOEXEC.BAT file.
Page 73: Solving Minor Problems
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 74 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 Computer is beeping and battery LED Battery charge is low. Immediately save any open file(s). icon is blinking. Then do any one of the following:...
Page 75 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 Battery pack has partially self- Condition the battery pack by fully discharged. charging, fully discharging, then fully recharging it. To maintain the charge, leave battery packs in the computer when it is connected to external power.
Page 76: Solving Display Problems
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 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.
Page 77 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 Display is blank and the Suspend icon System is in Suspend mode. Press any key or touch the Touch is flashing. Pad. Internal display is blank and the...
Page 78: Solving Hard Drive Problems
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 Problem Probable Cause Solution(s) This display panel has a continuous pattern Improper display cable Reseat the display cable to the across it (e.g., a "jailbars" pattern), has a...
Page 79: Solving Hardware Installation Problems
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 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.
Page 80 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 Memory count during Power-On Self-Test Optional memory expansion card Ensure that the optional memory (POST) is incorrect. is installed incorrectly, expansion card is installed is incompatible with correctly.
Page 81: Shipping Preparation
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 82 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 Ensure that there is no diskette in the diskette drive and that there are no IMPORTANT: PC Cards in the PC slots. 4. Close the display and all exterior doors of the computer.
Page 83: System Unit
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models : 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE PRODUCTS Maintenance & Service Guide SERVICES Presario Series SUPPORT Models: 1246, 1247, 1277, 1278, and 1279 CONTACT...
Page 84 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models : 1246, 1277, 1278, and 1279 4. Speaker 148108- Assembly w/ Cables 5. Base 158798- Enclosure 6. Battery Pack LION Enhanced 388647-001 NiMH Enhanced 388648-001 1.800.AT.COMPAQ privacy and legal statement...
Page 85 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 86 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 2. Voltage Convertor Board 352891-001 3. Modem 56K Data/Fax w/o SRAM 400445-001 3. Modem 56K Data/Fax w/o SRAM-Intl 143848-001 4. Processor AMD K6II 400-Mhz (Models: 1246, 1247, 1277, and 1278) 134079-001 433-Mhz (Models: 1277, 1278, and 1279) 158851-001 5.
Page 87: Display Assembly
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 88 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 89 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 1.800.AT.COMPAQ privacy and legal statement file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20chec...20SERIES%201246%201277%201278%201279/mass.html (2 of 2)6/27/2004 2:33:58 AM...
Page 90: Miscellaneous Cables Kit
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 91 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 privacy and legal statement file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20chec...SERIES%201246%201277%201278%201279/cables.html (2 of 2)6/27/2004 2:33:59 AM...
Page 92 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 93: Miscellaneous Plastics Kit
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 94 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 1.800.AT.COMPAQ privacy and legal statement file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20check...%201246%201277%201278%201279/misplastickit.html (2 of 2)6/27/2004 2:34:00 AM...
Page 95: Miscellaneous Parts
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 96 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 Miscellaneous Parts 1. AC Adapter 298239-001 2. Return Kit 293799-001 (not shown) 3. Logo Kit 141848-001 (not shown) 1.800.AT.COMPAQ privacy and legal statement file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20chec...RIES%201246%201277%201278%201279/miscella.html (2 of 2)6/27/2004 2:34:01 AM...
Page 97 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 98 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 -004 April -010 October -005 -011 November -006 June -012 December 1.800.AT.COMPAQ privacy and legal statement file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20che...ERIES%201246%201277%201278%201279/docume.html (2 of 2)6/27/2004 2:34:01 AM...
Page 99: Electrostatic Discharge
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 100 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 Typical Electrostatic Voltages Relative Humidity Event Walking across carpet 35,000 V 15,000 V 7,500 V Walking across vinyl floor 12,000 V 5,000 V 3,000 V...
Page 101: Service Considerations
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 102 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 Return to Removal & Replacement Procedures 1.800.AT.COMPAQ privacy and legal statement file:///C|/SERVICE%20MANUALS/COMPAQ%20_%20chec...ERIES%201246%201277%201278%201279/service.html (2 of 2)6/27/2004 2:34:03 AM...
Page 103: Cables And Connectors
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Page 104: Plastic Parts
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 The ribbon cable position for the 4.3-GB and 4.8-GB hard drive. The ribbon cable position for the drive. The ribbon cable position for the diskette drive.
Page 105: Preparing The Computer For Disassembly
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 106 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 CD Drive Metal objects can damage the battery pack as well WARNING: as the battery contacts in the battery compartment. To Battery prevent damage, do not allow metal objects to touch the Charger Board battery contacts.
Page 107 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 108 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 Modem Display Panel Assembly Upper CPU Cover Speaker Assembly Diskette Drive Fan Assembly System Board Dip Switch Settings Memory Module 1.800.AT.COMPAQ privacy and legal statement...
Page 109 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 110: Dip Switch Settings
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 Upper CPU Prepare the Cover computer for Speaker disassembly. Assembly Diskette Drive 2. Close the computer and turn Fan Assembly the computer System Board upside down.
Page 111 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 112: Display Panel Assembly
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 palmrest Modem cover with Display Panel touchpad Assembly slot opening. Upper CPU 4. Remove Cover Speaker heatspreader. Assembly Next Step Diskette Drive Fan Assembly...
Page 113 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 114 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 4. Remove two Display Panel screws from Assembly Upper CPU heatspreader and lift it out of Cover the chassis. Speaker Assembly To replace the...
Page 115 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 116 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 screw- driver Battery into the Charger Board bottom slot Modem opening on Display Panel processor Assembly and push toward the Upper CPU display to...
Page 117: Table Of Contents
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Page 118 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 Display Panel 2. Remove the Assembly palmrest cover Upper CPU with touch pad. Cover 3. Remove two Speaker screws from the Assembly hard drive...
Page 119: Cables And
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 120 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 written Hard Drive procedure. CD Drive Battery To remove the CD drive, complete Charger Board the following steps: Modem Display Panel 1. Prepare the...
Page 121: United States June 27, 2004
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 122 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 2. Remove the Keyboard palmrest cover Processor with touch pad. Hard Drive 3. Remove the CD Drive hard drive. Battery Charger Board 4. Remove one...
Page 123: Illustrated Parts Catalog
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 124 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 securing the Display Panel modem, and Assembly pull the Upper CPU modem off Cover connector on Speaker the system Assembly board. Diskette Drive Next Step...
Page 125: Removing The Display Panel
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 126 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 2. Remove the Display Panel palmrest cover Assembly with touch pad. Upper CPU Cover Speaker 3. Remove the heatspreader. Assembly Diskette Drive 4. Remove the Fan Assembly keyboard.
Page 127: Removal And Replacement Procedures
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Page 128: Battery Charger Board Modem
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 Remove the CD Drive hard drive. Battery Charger Board Remove the display panel Modem assembly. Display Panel Assembly Remove the screw located Upper CPU...
Page 129: Removal Sequence
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Page 130 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 4. Remove Palmrest the keyboard. Cover with Touch Pad 5. Remove Heatspreader hard Keyboard drive. Processor 6. Remove Hard Drive display CD Drive panel assembly.
Page 131: Removing The Diskette Drive
"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 132 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 upper CPU cover. Keyboard Heatspreader 8. Remove the battery charger Processor board. Hard Drive CD Drive 9. Remove the speaker Battery Charger assembly. Board Modem 10.
Page 133: Prepare The Computer For
"Compaq.com - Compaq Presari"Compaq.com - Compaq Presario Series Maint...ies Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide...
Page 134 "Compaq.com - Compaq Presari"Compaq.com - Compaq Presario Series Maint...ies Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 the keyboard. Processor Hard Drive 5. Remove CD Drive display panel Battery assembly. Charger Board Modem 6. Remove Display Panel...
Page 135 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 136 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 11. Remove the drive. CD Drive Battery 12. Remove the assembly. Charger Board Modem When replacing the system board, remove the memory IMPORTANT: Display Panel module on the system board.
Page 137 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models : 1246, 1277, 1278, and 1279 United States June 27, 2004 STORE | PRODUCTS | SERVICES | SUPPORT | CONTACT US | COMPAQ SEARCH Maintenance & Service Guide Presario Series...
Page 138: Complete The Following Steps
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Page 139 "Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1246, 1277, 1278, and 1279 3. Remove Modem the screw Display Panel from the Assembly memory module Upper CPU door, and Cover slide the memory Speaker module Assembly door to the Diskette Drive right.

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Compaq Presario 1246 Maintenance & Service Manual

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