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Diagnosis POST

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Judul : Diagnosis POST
Subjudul : Diagnosis POST

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Diagnosis POST

Pesan/peringatan kesalahan hasil POST berupa tampilan performance PC, visual di monitor dan beep dari speaker. Sesuai dengan urutan prosedur POST yang dilakukan oleh BIOS maka gejala-gejala permasalahan yang muncul adalah sebagai berikut:


Kode Beep AMI BIOS 
Dibawah ini  adalah daftar kode beep dari AMI BIOS.

Beep CodeDescriptions
1 shortDRAM refresh failure
2 shortParity circuit failure
3 shortBase 64K RAM failure
4 shortSystem timer failure
5 shortProcess failure
6 shortKeyboard controller Gate A20 error
7 shortVirtual mode exception error
8 shortDisplay memory Read/Write test failure
9 shortROM BIOS checksum failure
10 shortCMOS shutdown Read/Write error
11 shortCache Memory error
1 long, 3 shortConventional/Extended memory failure
1 long, 8 shortDisplay/Retrace test failed
Kode Beep AWARD BIOS 
Beep CodeDescription
1 long, 2 shortIndicates a video error has occurred and the BIOS cannot initialize the video screen to display any additional information
Any other beep(s)RAM problem.
Jika ada masalah hardware yang dapat diperbaiki, maka BIOS akan menampilkan pesan.

Kode Beep IBM BIOS
Beep CodeDescription
No BeepsNo Power, Loose Card, or Short.
1 Short BeepNormal POST, computer is ok.
2 Short BeepPOST error, review screen for error code.
Continuous BeepNo Power, Loose Card, or Short.
Repeating Short BeepNo Power, Loose Card, or Short.
One Long and one Short BeepMotherboard issue.
One Long and Two Short BeepsVideo (Mono/CGA Display Circuitry) issue.
One Long and Three Short Beeps.Video (EGA) Display Circuitry.
Three Long BeepsKeyboard or Keyboard card error.
One Beep, Blank or Incorrect DisplayVideo Display Circuitry.


Nada Startup pada Macintosh
TonesError
Error Tone. (two sets of different tones)Problem with logic board or SCSI bus.
Startup tone, drive spins, no videoProblem with video controller.
Powers on, no tone.Logic board problem.
High Tone, four higher tones.Problem with SIMM.

Kode Beep pada Phoenix BIOS
Beep CodeDescription and what to check
1-1-1-3Verify Real Mode.
1-1-2-1Get CPU Type.
1-1-2-3Initialize system hardware.
1-1-3-1Initialize chipset registers with initial POST values.
1-1-3-2Set in POST flag.
1-3-3-128 Autosize DRAM.
1-3-3-3Clear 512K base RAM.
1-3-4-1Test 512 base address lines.
1-3-4-3Test 512K base memory.
1-4-1-3Test CPU bus-clock frequency.
1-4-2-4Reinitialize the chipset.
1-4-3-1Shadow system BIOS ROM.
1-4-3-2Reinitialize the cache.
1-4-3-3Autosize cache.
1-4-4-1Configure advanced chipset registers.
1-4-4-2Load alternate registers with CMOS values.
2-1-1-1Set Initial CPU speed.
2-1-1-3Initialize interrupt vectors.
2-1-2-1Initialize BIOS interrupts.
2-1-2-3Check ROM copyright notice.
2-1-2-4Initialize manager for PCI Options ROMs.
2-1-3-1Check video configuration against CMOS.
2-1-3-2Initialize PCI bus and devices.
2-1-3-3Initialize all video adapters in system.
2-1-4-1Shadow video BIOS ROM.
2-1-4-3Display copyright notice.
2-2-1-1Display CPU Type and speed.
2-2-1-3Test keyboard.
2-2-2-1Set key click if enabled.
2-2-2-356 Enable keyboard.
2-2-3-1Test for unexpected interrupts.
2-2-3-3Display prompt Press F2 to enter SETUP.
2-2-4-1Test RAM between 512 and 640k.
2-3-1-1Test expanded memory.
2-3-1-3Test extended memory address lines.
2-3-2-1Jump to UserPatch1.
2-3-2-3Configure advanced cache registers.
2-3-3-1Enable external and CPU caches.
2-3-3-3Display external cache size.
2-3-4-1Display shadow message.
2-3-4-3Display non-disposable segments.
2-4-1-1Display error messages.
2-4-1-3Check for configuration errors.
2-4-2-1Test real-time clock.
2-4-2-3Check for keyboard errors
2-4-4-1Set up hardware interrupts vectors.
2-4-4-3Test coprocessor if present.
3-1-1-1Disable onboard I/O ports.
3-1-1-3Detect and install external RS232 ports.
3-1-2-1Detect and install external parallel ports.
3-1-2-3Re-initialize onboard I/O ports.
3-1-3-1Initialize BIOS Data Area.
3-1-3-3Initialize Extended BIOS Data Area.
3-1-4-1Initialize floppy controller.
3-2-1-1Initialize hard disk controller.
3-2-1-2Initialize local bus hard disk controller.
3-2-1-3Jump to UserPatch2.
3-2-2-1Disable A20 address line.
3-2-2-3Clear huge ES segment register.
3-2-3-1Search for option ROMs.
3-2-3-3Shadow option ROMs.
3-2-4-1Set up Power Management.
3-2-4-3Enable hardware interrupts.
3-3-1-1Set time of day.
3-3-1-3Check key lock.
3-3-3-1Erase F2 prompt.
3-3-3-3Scan for F2 key stroke.
3-3-4-1Enter SETUP.
3-3-4-3Clear in POST flag.
3-4-1-1Check for errors
3-4-1-3POST done - prepare to boot operating system.
3-4-2-1One beep.
3-4-2-3Check password (optional).
3-4-3-1Clear global descriptor table.
3-4-4-1Clear parity checkers.
3-4-4-3Clear screen (optional).
3-4-4-4Check virus and backup reminders.
4-1-1-1Try to boot with INT 19.
4-2-1-1Interrupt handler error.
4-2-1-3Unknown interrupt error.
4-2-2-1Pending interrupt error.
4-2-2-3Initialize option ROM error.
4-2-3-1Shutdown error.
4-2-3-3Extended Block Move.
4-2-4-1Shutdown 10 error.
4-3-1-3Initialize the chipset.
4-3-1-4Initialize refresh counter.
4-3-2-1Check for Forced Flash.
4-3-2-2Check HW status of ROM.
4-3-2-3BIOS ROM is OK.
4-3-2-4Do a complete RAM test.
4-3-3-1Do OEM initialization.
4-3-3-2Initialize interrupt controller.
4-3-3-3Read in bootstrap code.
4-3-3-4Initialize all vectors.
4-3-4-1Boot the Flash program.
4-3-4-2Initialize the boot device.
4-3-4-3Boot code was read OK.


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