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1、the code of version 5004 is more credible ,POST card self-test is more detailedUsers guide of four-bit code POST card This Users guide is fit for the common computer post card (the PI0050) and the note book computer post card (M04). 四位代码形电脑主板故障诊断卡使用说明There are editions in Chinese for you to choose可选
2、配中文说明书 Not only diagnose the trouble of main board but also the trouble of the POST card, keep users from misunderstanding . More compatible with main board PIV, end the history that the POST card is unable to work as the main board update constantly. You can consult the code that has run; Press the
3、 switch once and the code pauses It do no harms to device while insert the card wrongly with a speaker on the card to remind you there is an error, SMD device that protect your hands. Test the speed of PCI and ISA bus of the computer, you will get the result as soon as you test it. It can help you n
4、ot suffer losses when you buy the computer, and also help you sell the computer that has a fast bus speed at good price. . CatalogueI、Front View 2II、Implication of word/number of four-bit code POST card 3 III、Flow chart 4 、Distinguish true and false 7、OBLIGATORY CONTENT 7 、Description of LED display
5、s 8 、Error code table 8 、Description of beep code 30 、 Frequently-asked questions 34I、 Front View This card that named PI0050 is fit for common computer This card named M04 is fit for notebook computer.II、Implication of word/number of four-bit code post cardword/NUMDescriptionStart automatic diagnos
6、is after it displayed for about half a second1The first function symbol of main menu ,then enter code consulting function after it displayed for about half a second2The second function symbol of main menu , then display the reference speed of bus after it displayed for about half a second3The third
7、function symbol of main menu ,display the versionnumber5002 after it displayed for about half a second4The fourth function symbol of main menu, start to test the card and display from 0000、1111 to FFFF after it displayed for about half a second5The 5th function prompt ,start self-test after the prom
8、pt displayed for about half second. .As long as each of 4 bits can display symbols, no matter what it displays, the POST process passed. Because of the POST content has been enhanced a lot, plenty of symbols are especial . you can pay no attention to it.P C IIt indicates that the slot you insert the
9、 card is PCI slot, and wait for you to consult the next code by pressing function switch.I S AIt indicates that the slot that you insert the card is ISA slot. And wait for you to consult the next code by pressing function switch.Waiting for you to consult the next code by pressing the function switc
10、h. After it displayed for half a second, the code will be displayed, and the first two bits indicates the hexadecimal error code .The last two bits indicates the ordinal number of the code.Waiting for you to consult the preceding code by pressing the function switch. After it displayed for half a se
11、cond, the code will be displayed, and the first two bits indicates the hexadecimal error code, the last two bits indicates the ordinal number of the code.E n dThe last code( ordinal number limit: 0-47) forward consulting is displayed; press and hold the function switch for some 0.8 second, then ente
12、r the backward consulting mode and display P- - -, after half a second, the code is displayed, the first two-bit code indicates the 47th POST code, the last two-bit code(47) indicates the ordinal number of the code; if press and hold the function switch for about 0.8 second twice, it will exit the c
13、ode consulting and enter the second function of main menu, at the same time displayed 2- - -, then display the reference speed of PCI/ISA bus in decimal in half a second.E n dThe first code (ordinal number limit : 0-47) backward consulting is displayed; Press and hold the function switch for 0.8 sec
14、ond, then enter the forward consulting mode and display- - -P, after half a second, the code is displayed, the first two-bit code indicates the zero code; the last two-bit code (00) indicates the ordinal number of the code. If press and hold the function switch for about 0.8 second twice, it will ex
15、it the code consulting and enter the second function of main menu, at the same time displayed2- - - , then display the reference speed of PCI/ISA bus in decimal in half a second.III. Flow chart BeginPower off and remove all the cards that plug in expansion slot. Insert the card into ISA or PCI slot.
16、 (Notice: When you plug it in the ISA slot the component side should face to the power, if it plugged in the wrong direction, the card and motherboard is not broken, but both the card and the main board stop running. According to the “Description of LED displaying , you can find the cause of the tro
17、uble and correct it NOPower on; Judge If the all lights run normally. (The BIOS light may be on low power to sparkleAccording to the error code table, you can find the cause of the trouble and correct itYESYESJudge whether the error code that means there is a trouble with the main board is displayed
18、NOPower off, According to the error code table, you can find the cause of the trouble and correct itPower off, insert the display card、I/O card、keyboard、hard disk drive and expansion cardsPower on, Judge whether the error code that means there is a trouble with the main board is displayedYESNOEndIf
19、the result of the test is correct even though it cant boot the operating system, there may be some trouble with the software or disc drive, or disk controller, or DMA circuit.Illustration of four-bit code POST card (5004 version)power onDisplay 0- - - testing.Error Preceding Code Code 8 8 8 8Display
20、 - PCI if insert to the PCI slot, Display - ISA if insert to the ISA slot,Press and hold theswitch for about0.8 secondDisplay 1- - - about 1 second latter code consulting Display reference speed of bus in decimalDisplay 2- - - test speedDisplay 3- - - display version numberPress and hold the switch
21、for about 0.8 secondDisplay version number5 0 0 4If the display component is ok, it will display from0000.1111.2222.3333toFFFF F F F FDisplay 4- - - self-test displaycomponentPress and hold the switch for about 0.8 secondAs long as each of 4 bits can display symbols, no matter what it displays, the
22、POST process passed. Because of the POST content has be enhanced a lot, plenty of symbols are especial. you can pay no attention to it.8 8 8 8Display 5- - - RAM、ROMself-test (The display is so fast that you cannot see.)Press and hold the switch for about 0.8 secondConnecting dot Connecting dot Conne
23、cting dot Connecting dot press and hold for about 0.8 secondpress and hold for about 0.8 seconddisplay - - - P consulted the forwardpress and hold the switch for about 0.4 second(the 49th)display End - , the first code of 48 codespress and hold theswitch for about 0.4second (the 2nd)POSTordinalnumbe
24、rCodeof the code press and hold the switch forabout 0.4 secondpress and hold theswitch for about 0.4second (the 2nd)8 8 0 1POSTordinalnumberCodeof the codepress and hold theswitch for about 0.4second(the 47th)press and hold theswitch for about 0.4second (the 2nd)POST MAXCode8 0 4 7press and hold the
25、switch for about 0.4second(the 1st)press and hold theswitch for about 0.4second(the 49th)display - End the last codepress and hold the switch for about 0.8 seconddisplay P- - - consult it backwardpress and hold the switch for about 0.8 secondexit the code consultingcode analysis clew The codes that
26、can be consulted are last 0 to 47 codes that take relative longer time in the POST process, not all the code need to be consulted.(some main board output millions of codes or the same code appears many times), If the same code take different time to run in different running courses on the same main
27、board , the POST card not always use it as code that can be consulted. The main board is of the good stability If the 47 codes that consulted in different running courses on the same main board are the same, and the last 47th code has passed the POST, but this situation is rare.、Distinguish true and
28、 falsePi0050is more suitable than Pi0049for slap-up main board ,such as pill、PIV and so on. So you can distinguish them by their characteristics ,and also you can dial this number 086 139 2517 4332 or write to me by E-mail: to get lastest distinguishing message.TRUE There are typefaces like “China C
29、opyright 01224987.4on the edge of PCB; There are typefaces like “China Copyright 513427on PI0049、pi0050;FLASE On the back of the card ,there is a telephone number written like “086 139 2517 4332; Known characteristic of spurious cards: 中国专有号：01223987.3 专有技术：01224988.3 专利号：02125087.5(It is the patent
30、 of biology organic compound) Be careful .The spurious cards always use badly or unsuitable materials, it hasnt been tested by the professional equipment ,and has no simulation technique. At the same time ,there may be a few low card appears to used as PI0050 card.、OBLIGATORY CONTENT 1. The error co
31、de table is in the order of the code value that from small to big. The sequence that the code displays is decided by BIOS of the motherboard;2. Four-bit code can be divided to two two-bit codes .The one is made of the thousands digit and the hundreds digit ;The other is made of the tens digit and un
32、its digit .According to the two two-bit codes, Not only you can know the posting for computer can not pass the units that the thousands digit and the hundreds digit point out, but also you can know that the post for computer can pass the units at last that the tens digit and the units digit point ou
33、t; 3. Code havent be defined is not included in the table;4. For the different BIOS (such as AMI、Award、Phoenix ), a Code has different meanings. So make sure that which kind of BIOS you are testing. Or view the users guide, or See it on the BIOS IC on the motherboard;5. There is only some code displ
34、ayed when you insert the card into the PCI slot on a few motherboards, but when it plugged into the ISA slot, all the code could be displayed. At present, it has be discovered that the code is displayed when you insert the card into the PCI slot of several computers which has registered trade mark,
35、but not ISA. So Youd better try it on the other slot if the code is not displayed. In addition, on the different PCI slots of a board, some could display the code, for example, the code is displayed and goes from “00 to “FF when you insert the card into the PCI slot, which is near to the CPU on moth
36、erboard DELL810, but if in the other slot , the code would stopped at the port “38;6. The time that reset message output needed is not always in-phase, so sometimes the code is displayed when the card in the ISA, but it is stopped at the origination code when in the PCI.;7. As there are more and mor
37、e kinds motherboard, and the code of BIOS POST is updated ceaselessly, so the meanings of error codes is just for reference;、Description of LED displaysLED Type Description CLK Bus clockLights when the power is applied to the empty board (even without CPU ) , or else there is no message.BIOSBase inp
38、ut/output readLED that turn on and off when the board is powered on, as CPU is reading to BIOS.IRDYManager is readyLED that turn on and off when there is a message.OSCOscillationLights when the board is powered on, or else the crystal oscillation circuit is broken, and has no OSC message. FRAMEFrame
39、 periodsLights all the time. Turn on and off only when there is a circular frame message. RSTResetLights only for half-second when you slide the power switch or the reset switch. If it is lit all the time, check the following: make sure that the reset pin is plugged properly, or the reset circuit is
40、 broken.12VPowerLights once the board is powered on, if it is not lit, that means the short circuit occurs on motherboard, or voltage cant up to 12V.-12VPowerThe same as“12V5VPowerThe same as “12V-5VPowerThe same as “12V (-5V is output only in ISA slot.、Error code table CODEAwardAMIPhoenix4.0/Tandy3
41、000 CODEAwardAMIPhoenix4.0/Tandy300000Code copying to specific areas is done. Passing control to INT 19h boot loader next.01Processor Test 1, Processor status (1FLAGS) verification. Test the following processor status flags: carry, zero, sign, overflow.CPU is testing the register inside or failed, p
42、lease change the CPU and check it.The BIOS sets each flag, verifies they are set, then turns each flag off and verifies it is off.02Test All CPU Registers Except SS, SP, and BP with Data FF and 00Verify Real Mode03Disable NMI, PIE, AIE, UEI, SQWV.The NMI is disabled. Next, checking for a soft reset
43、or a power on conditionDisable Not masked Interrupt (NMI)Disable video, parity checking, DMA.Reset math coprocessor.Clear all page registers, CMOS shutdown byte.Initialize timer 0, 1, and2, including set EISA timer to a known state.Initialize DMA controllers 0 and 1.Initialize interrupt controllers
44、0 and 1.Initialize EISA extended registers.04RAM must be periodically refreshed to keep the memory from decaying. This refresh function is working properly.Get CPU type05Keyboard Controller InitializationThe BIOS stack has been built. Next, disabling cache memory.DMA initialization in progress or failure CODEAwardAMIPhoenix4.0/Tandy300006Reserved Uncompressing the POST code next.Initialize syste
