HP Omnibook 300 425 430 530 Service Manual
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65Paw Carrier (Paw Active) (HP Authorized Service Providers Only) Required Equipment · Appropriate ESD station · Torx #6 screwdriver · Two small flat tip screwdrivers (or similar prying devices) · Probe Removal Procedure 1. Follow the Logic Board PCA Removal Procedure. 2. Remove the Mylar Mouse Shield. Refer to the below illustration for location of components. 3. The Mouse Eject Arm and Eject Arm Spring may be removed at this point for convenience. 4. Gently bend the Pivot Bracket Tabs upward. Take caution not to break these tabs. If this occurs the Bottom Case must be replaced. 5. Remove the Pivot Bracket. 6. Lift the Paw Carrier from the plastic posts holding it in place. Replacement Procedure 1. To replace the Paw Carrier, reverse the steps in the Removal Procedure. 2. Follow the Logic Board PCA Replacement Procedure to replace the Logic Board and remaining components.Figure 24 - Paw Carrier RemovalMylar Mouse ShieldPivot BracketPaw CarrierMouse Eject ArmEject Arm SpringBottom CasePivot BracketTabs (Qty 2)
66Other Components (HP Authorized Service Providers Only) The below table list additional replaceable components and the disassembly procedure(s) necessary to gain access to each.ComponentDisassemblyProcedure(s)EquipmentSpecial NotesTop CaseDisplay KeyboardTorx #6 screwdriver 5mm hexdriver Two flat tip screwdrivers ProbeBottom CaseDisplay Logic PCA Board Paw CarrierTorx #6 screwdriver 5mm hexdriver Two flat tip screwdrivers ProbeMouse Button Latch Mouse Latch SpringDisplayTorx #6 screwdriver 5mm hexdriver Two flat tip screwdrivers ProbeMylar Mouse Shield Pivot BracketDisplay Logic PCA BoardTorx #6 screwdriver 5mm hexdriver Two flat tip screwdrivers ProbeEject Buttons (A&B) Eject Arms (L&R) Eject Arm SpringDisplayTorx #6 screwdriver 5mm hexdriver Two flat tip screwdrivers ProbePivot Doors (A&B) Pivot Door SpringDisplayTorx #6 screwdriver 5mm hexdriver Two flat tip screwdrivers ProbeHinge CapDisplayTorx #6 screwdriver 5mm hexdriver Two flat tip screwdrivers ProbeThe Hinge Caps simply slide off of the ends of the Display.Security LatchDisplayTorx #6 screwdriver 5mm hexdriver Two flat tip screwdrivers ProbeUse a probe to remove the Security Latch from the Bottom Case.
67Appendix A - Technical and Resource Specifications Mass Storage Specifications40MB105MB131MBFlash DiskCards (Typical)Average seek< 19 ms19 ms19ms2-3 msTrack to Track seek5 ms6 ms6 msNAAverage Latency6.67 ms6.72 ms6.72 msNARotational speed4503 rev/m4464 rev/m4464 rev/mNAData transfer rate Buffer to disc Buffer to host13-21 Mbits /sec 4.5 Mbytes /sec11.4 - 19.2 Mbits/sec 4 Mbytes /sec11.4 - 19.2 Mbits/sec 4 Mbytes/sec2.5 MBytes/sec 6.0 MBytes/secBuffer size32 Kbytes static RAM31 Kbytes31 KbytesNASpindle start time1 sec typical 3 sec maximum
68Memory Map Upper Memory Block Space OB300/425OB430OB530UMB Space Available64k64k + 32k112k contiguousDOS Conventional Memory OB300OB425OB430OB530Windows DOS Box (with LapLink Remote)315 KB315505404Exit Windows (with out LapLink Remote)435 KB435533437300/425430430ABCDEFVGA RAMVGA RAMPCMCIAUMB SPACEUMB SPACEROM DOSSYSTEM BIOSVGA BIOSVGA BIOSSYSTEM BIOSUMB SPACEPCMCIA
69Appendix B - Power On Self Test Codes Beep Codes Beep Codes are used to identify a Power On Self Test (POST) error that occurs when the screen is not available. Once the screen is operational, diagnostic messages are reported to the screen. There are beep codes for both fatal and nonfatal system board errors. The codes are shown as x-y-z where 2-2-1 represents 2 beeps - pause - 2 beeps - pause - 1 beep. Fatal Errors1-1-1CPU failure 1-1-3CMOS failure 1-1-4BIOS Checksum failure 1-2-18253 timer failure 1-2-2DMA setup failure 1-2-3DMA page register failure 1-3-1RAM refresh not verified 1-3-2SMI RAM bad 1-3-3Low 64K RAM failure 1-3-4Low 64K RAM even/odd failure 1-4-1Low 64K RAM address line failure 1-4-2Low 64K RAM parity error 2-1-1Low 64K RAM bit 0 error 2-1-2Low 64K RAM bit 1 error 2-1-3Low 64K RAM bit 2 error 2-1-4Low 64K RAM bit 3 error 2-2-1Low 64K RAM bit 4 error 2-2-2Low 64K RAM bit 5 error 2-2-3Low 64K RAM bit 6 error 2-2-4Low 64K RAM bit 7 error 2-3-1Low 64K RAM bit 8 error 2-3-2Low 64K RAM bit 9 error 2-3-3Low 64K RAM bit 10 error 2-3-4Low 64K RAM bit 11 error 2-4-1Low 64K RAM bit 12 error 2-4-2Low 64K RAM bit 13 error 2-4-3Low 64K RAM bit 14 error 2-4-4Low 64K RAM bit 15 error 3-1-1DMA #2 register error 3-1-2DMA #1 register error 3-1-38259 #1 error 3-1-48259 #2 error 3-2-48042 KB controller error 3-3-4Video initialization error 3-4-1Video retrace failure 3-4-2Video ROM-scan in progress 3-4-3Video ROM-scan errorNon-Fatal Errors4-2-18253 timer tick test 4-2-2Shutdown/Restart sequence 4-2-3Gate A20 failure 4-2-4Unexpected virtual mode interrupt 4-3-1RAM test in progress 4-3-38253 timer channel 2 test 4-3-4Time of day clock test 4-4-1Serial port test 4-4-2Parallel port test 4-4-3Math coprocessor test
70Display Codes There are a number of Power On Self Test (POST) tests that are performed after the Beep Code tests. Failure of one or more of these tests will result in a displayed failure code (such as 0240). It is extremely important not to interpret a failure code immediately as a hardware failure. The failure should be confirmed with a clean boot. A clean boot is defined as pressing the reset button after removing all accessories (including memory cards, external floppy drive, modems, PCMCIA cards, and printers) and providing a reliable power source. The following list explains a number of POST Display Codes. Note, not all codes are available on all models of the OmniBook. No Error; Self-Test Routine Passed0000htest passed80x86 Microprocessor Error000fhMPU failed self testBIOS ROM Checksum Errors0010herrors relating to the BIOS rom checksums0011hReal Time Clock Errors0110h011X where X = bad register0120hRTC clock tick errorCMOS Errors0240hCMOS power bad0241hCMOS checksum bad0280hHP checksum bad0282hEISA checksum baderror code 0281 was previously used 8041 Errors0301hdid not read 0AAH command0302hdid not respond to 0AAH command0303hbad Response to 0AAH command0305hdid not respond when setting keyclick volume0306hdid not read 0C0H command0307hdid not respond to 0C0H command0308hkeyboard fuse is open0311hdid not read 060H command0312hdid not read data for 060H command0341hdid not read kbd interface test cmd0342hdid not respond to kbd intrf test0342hadd 1-4 to this to get00343hkbd clock line stuck low00344hkbd clock line stuck high00345hkbd data line stuck low00346hkbd clock line stuck high0350hno ACK from kbd test0351hbad ACK from kbd test
710352hkbd not connected0353hno response from kbd test0354hkbd test failederror codes 0304, 0313-0314, 0321-0323, 0331-033C were previously used AUX Self Test Errors03E0hsend enable-aux cmd to 8042 cmd byte failed03E1h8042 failed to accept write-aux- device cmd03E2hwrite-aux-device cmd not sent by 804203E3hreset-aux cmd not accepted by 804203E4h8042 failed to send aux-interface-test03E5hno reply for aux-interface-test cmd from 804203E6haux device clock line stuck low03E7haux device clock line stuck high03E8haux device data line stuck low03E9haux device data line stuck high03EAhno reply for aux-reset cmd from aux03EBhaux failed to perform reset03EChsend default cmd to 8042 cmd byte failedProtected-Mode Switch Error0401hfailed to switch to protected modeerror code 0500 was previously used Serial and Parallel Test Errors0503hno serial port0505hbad serial port0543hno parallel portKeyboard Device Errors0600hkbd has keys stuck 06XXh where XX = the scan code of the stuck keySystem Speed Test Errors0702htimer failed to interrupt0703hCPU clock too slow in SLOW speed0704hCPU clock too fast in SLOW speed0707hCPU clock too slow in FAST speed0708hCPU clock too fast in FAST speederror codes 0700-0701, 0705-0706, 0709-070C were previously used Timer Chip Errors1100hfailed timer test 110Xh where X = failed timer #1200hno refresh tick1201hrefresh signal stuck lowEISA Init Errors13XYX = slot number where error occurred
72Y = error type1300herror code displayed if fdc is not configured properly1301herror code if board is not ready1302herror code if cmos says slot is empty but a card is present in the slot1303herror code if cmos says slot does not have board with readable id but can read board id1304herror code if cmos id and board id do not match1305herror code if incomplete configuration bit is setMemory Configuration (POST) Errors2000hbad port or wrong memory board2001hbad port or wrong board type2002hport reports null or no SIMMs2003hcant mix single and double density SIMM parts2005hphysical SIMM config. invalid 20X5h X = the memory bank the checking routine stopped at - banks are numbered 0, 1, 2, or 32006Hbad memory controllerDMA Errors21XYhDMA controller errors XY= 0001 bbbb = register bbbb of controller 01 failed write/read test XY= 0010 bbbb = register bbbb of controller 02 failed write/read test213XhDMA status register errors X=0 => Controller 1s status register failed X=1 => Controller 2s status register failed22XYhDMA Page register errors XY= 0001 abbb = channel bbb of page register bad bit a 0 = ISA (0xxh) register 1 = EISA (4xxh) register0010hDMA page maskerror codes 3000-3010 were previously used Real-Mode (0-1Mb) RAM Errors4000h4XYZ - the interpretation of this error code is machine dependenterror codes 5000-5FFF were previously used RAM Address Line Independence, Parity, & IO_CHK Errors6100herrors relating to the address independence test of ram XX = xxxx bbbb = address line bbbb is bad (no. 0 to 19)6200herrors relating to the RAM parity 620X
73test (low 640k). x = 64k bank no. with problem (i.e. 6204 = bank 4 is bad = address range 40000h to 4ffffh)6300hI/O channel check came active during write read test of protected mode ram 63xx = xx = 256k ram bank/block with problemBIOS and Memory Shadow-RAM Errors6500hshadow RAM BIOS failed6510hshadow RAM video BIOS failed6520hshadow RAM option ROM failed65A0hA000 shadow RAM test failed65B0hB000 shadow RAM test failed65C0hC000 shadow RAM test failed65D0hD000 shadow RAM test failed65E0hE000 shadow RAM test failed65F0hF000 shadow RAM test failed8259 Interrupt Functionality Errors07000h7XYY where X = 0 masters mask reg. failed X = 1 slaves mask reg. failed YY = XOR of value read & written to the mask reg07400hIRQ 0 error07500hIRQ 8 errorerror code 7600 was previously used Hard Disk Errors8310hcontroller fail8311hfixed disk fail8312hdrive splitting failureerror codes 8001-8002, 8100, 8200, 8300 were previously used Flexible Disk Errors9X0ZX = drive number (0..3 correspond to drives A:, B:, FDE#1, FDE#2) Z = determined by the following equates9000HFDC input error9001HFDC output error9002HFDC seek error9003HFDC recall error9005HFDC reset error9006HFDC wrong drive9008HFDC no interrupt9009hFDC track 0 errorerror codes 90XX and 98XX were previously used 80x87 Numerical Co- Processor Errors0a001hthere is no 80287 in the system0a002hproblem with the 80287s registers0a003hproblem with the 80287s stack
740a004hFXCH or FCOMP didnt work0a005hFADD didnt work0a006hFMUL didnt work0a007hFDIV didnt work0a008hFSQRT didnt work0a009hFPATAN didnt work0a00ahinvalid operation exception err0a00bhdenormal operand exception error0a00chzero divide exception error0a00dhoverflow exception error0a00ehunderflow errorWeitek Numerical Co- Processor Errors0af00hfailed to enter protected mode0af01hthere is no Weitek in the system0af02herror in Weitek data register0af05hADD didnt work0af06hMULT didnt work0af0ChZero Divide exception errorVideo Errors0b009hbeep if no video card is installederror codes B001-B008, B100, B200, B301-B307, B400- BFFF were previously used Cache Errors0b308hinternal cache error0b300hP4 cache test failureProtected Mode RAM Errors0c000h0CXYZ - the interpretation of this error code is machine dependenterror codes D000, D003-D040, D050, D1XX, EXXX, FFXX were previously used