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1. Flowchart to eliminate l errors l l i Refer to Instability Caused i i Found errors YES by raky companent and ats i l Elimination to eliminate errors l l NO YES l y l Going on stability test because of eed to induce the worrying about the NO gt I errors i test computer is i unstable i vt NO i gt v i i l Wait for opportunity i to solve it Maybe it s in good condition YES i i y i Refer to Induce Error i That Cause Instability to eliminate errors l i Usually the faulty component will be found iq _ A l by Inducing Test Repair ves Poara erias it directly l l i NO n l l Test the computer by It is still unstable i i Pa when put it to simulating conditions for m NO common Gceacion for A important occasion A l testing l 3 v i DSTC shows i stable ais i i YES v l Can be used for l I important occasions l 11 Figure 2 Instability Analysis QiGuan Electronics Co Ltd NO i Found error by lt Error A Analysis flowchart gt Data B2. NO Show stable YES Need to v Replace the removed induce peripherals YES v Go on test according to Shows stable Inducing Test Flowchart NO YES NO No peripheral interference YES Found errors There is peripheral Usually the faulty ee eee components will be found by Inducing NO Test Repair them directly M y End 24 QiGuan Electronics Co Ltd 3 How to choose computers used for important occasions with DSTC gt Remove the peripherals i lt NO Shows stable Change to another computer z lt y Replaced the removed peripherals NO Shows stable gt YES Y Success End 4 Going on the test without removing the hard disk from the computer has any influence on the computer Answer Going on the test without removing the hard disk means abnormal shutdown No other bad results We suggest removing the hard disk from the computer before test 5 Why the normal computer go wrong when the case is opened Answer After a long period of usage the copper foil will be decayed by the dry battery Though the circuitry is ok hit and vibration will lead to bad contact during opening the case Please make data backup before opening the case to clean dust or
3. Shows stable YES y Found error NO 4 Found error but no error of instability vs Eliminate the error and then go on stability test Please note that any repair may cause instability The test computer is stable and no error NO QiGuan Electronics Co Ltd Is the computer able to work YES The test computer has no error but unstable that is to say the test computer has potential error Make backup for the important data and replace the unstable computers with stable ones and then put them to common occasion like training or use aging method to repair The test computer has errors and including instability error even very serious instability error Make data backup with another normal computer and take the opportunity to eliminate the error when the computer goes wrong Often go on stability test and the DSTC shows stable for times then the test computer must be stable or the error may hide or there is other instability error Repeat the former method to eliminate gt found Suggest regular test 10 End NO QiGuan Electronics Co Ltd i Data i Backup 1 i Found Error YES Eliminate the errors according i Codes to meaning of the error codes l I Refer to Instability Analysis
4. r Shows stable NO y Wipe the network card with brush or clean paper and then plug it in the slot again v Shows stable NO y Probably bad contact between mouse and motherboard v Shows stable NO y Probably bad contact between memory band and motherboard wipe the memory bank and plug it in QiGuan Electronics Co Ltd the slot again v Shows stable NO Vv Non bad contact Usually faulty component will be found by Inducing Test Repair it YES y Need to induce the error YES A Refer to Method to induce error that cause instability flowchart to go on test Found error End directly 22 VI FAQ and Solutions 1 How to choose stable UPS with DSTC QiGuan Electronics Co Ltd Power AC lt Shows stable YES Yy gt Power by UPS Change the UPS NO Shows stable gt YES Succeed End YES NO Seek failures by accessories Succeed NO y Repair y There is no facility to check UPS 23 QiGuan Electronics Co Ltd 2 How to check the peripheral disturbance with DSTC Remove the peripherals
5. and won t mislead the users The users can see it clearly when the Clock Signal Pulse fluctuates even if it is 1O0ns pulse 100 M PCI Bus utmost 66 M When there is no Clock Signal the Clock Indicator is off no matter if it stays at high or low level which won t mislead the users No loss of pulse and no unneeded pulse 26
6. no CLK signal impulse no matter the current signal stays at high or low level No pulse loss no unwanted pulse 3 Thoroughly eliminated random initial code that mislead the user in troubleshooting 4 It can troubleshoot the failures from the motherboard even without CPU 5 Functional limitation of traditional PC Diagnostic Cards has been broken e g we have created standard PCI interface and varieties of auxiliary parts that enhance the accuracy and reliability of PC Diagnostic Cards And part of its functions depend on BIOS no more and never limit to POST contents and manners of BI OS 6 Support port 80h 84h and 300h QiGuan Electronics Co Ltd III Stability Test Flowchart power on PC failures troubleshooting The stable indicator light and the unstable indicator light are on at the same time Stability Test The stable indicator light and the unstable indicator light flash alternately and quickly Stability Test data processing The stable indicator light and the unstable indicator light are flashing slowly and alternately Show the stability test results The stable indicator light is on or The unstable indicator light is on End Note This flowchart is only applicable to PCs without hard disk VI Meaning of Test Results QiGuan Electronics Co Ltd 1 Meaning of POST Codes and Analysis amp Solution of Stability T
7. of the Reset Signal of the test computer so the abnormal reset logic of the test computer will not influence the test It can correct failures and prevent pulse loss automatically Resetting the test computer during testing will not influence the stability test 5 It is independent of Windows System or other software and it is able to troubleshoot even the screen is blank 6 Unprecedented compatibility It is compatible with all kinds of high middle and low classes of motherboards in the market and shows more accurate failure codes There is even no exception for Intel 9XX series that represent the mainstream of top motherboards Such as SIS671 which can not be tested by the traditional PC diagnostic card 7 It is good helper to choose quality computers and computer accessories e g memory banks hard disks 4 QiGuan Electronics Co Ltd keyboards and even the external equipments such as UPS printers and computers used for ATM And it also can help the sellers sell their computers by proving the stability I1 Features of Indicator lights Indicator Signal Illustration Light 7 Unstable Unstable III Features of Troubleshooting Special 3 3V voltage of motherboards that have PCI slot The indicator light will be always on when power on Part of the motherboards that have PCI slot have no 3 3V voltage so the indicator light will be off The indicator will be always on when power on Part of the moth
8. one by one such as memory bank hard disk audio card etc Shows stable NO v QiGuan Electronics Co Ltd Retest Is the computer used for important occasion like war industry NO y If the computer is used for common occasion like training then it can be used directly YES eed to prove again with the unstable ap componens YES Suggest retest with the y unstable components Eror elimiatei v because stability may be variable YES NO YES Stable NO YES gt YES y s it component Need to NO cause error and prove again Return to the original the error has been hidden NO Not component that cause error and the computer for trial Necessary aging test and special test according to different occasion error has been hidden Change to a stable component NO Instability appear in aging test YES y If conditions permitted this computer can be used for common occasions Unstable error has been eliminated and can be Eliminate errors through other error analysis flowcharts lt NO used now Is there any evidence show it is bad contact between components lead to insta
9. the Reset Indicator is on for half a second and then go out YES Y Bad Reset Switch repair it Figure 6 AC Error Analysis Data backup l Is there other nearby socket that computer works normally with it NO A YES Quality UPS available NO High power manostat D available gt NO Have a stable computer YES NO y Send the test computer to the repair store or other occasion yY QiGuan Electronics Co Ltd where normal AC is available and see if it is AC that cause the computer to be unstable Y Data backup l DSTC shows Non AC caused stable NOP instability YES AC caused instability End 16 Figure 7 Mixed Memory Bank Data backup l QiGuan Electronics Co Ltd Memory Bank match with the NO gt motherboard Change to memory bank that match with the motherboard YES y lt DSTC shows stable gt s Mixed memory bank cause instability NO y Change to another memory bank match with the motherboard l lt DSTC shows stable es Memory bank is not compatible with the motherboard NO y Put the memory bank to another stable computer A lt DST
10. C shows stable gt YES y It is not memory bank that cause instability End 17 Figure 8 Not Enough Power Load Capacity QiGuan Electronics Co Ltd Data backup l Remove the PCI cards and change to higher power Power load is too light Power overload kq YES lt YES DSTC shows stable NO v Add more hard disks or PCI cards and change to lower power DSTC shows stable gt NO Y cause instability Not overloading or less loading e Usually Faulty components will be found by Inducing Test Repair it directly YE v Need to induce YES v Refer to Method To Induce Instability Found errors NO End 18 QiGuan Electronics Co Ltd Figure 9 Bad Heat Dissipation Data backup l Enhance heat dissipation clean the CPU fan clear out the duct or change to bigger fan DSTC shows stable NO v Reduce heat by removing the hard disk or PCI graphic card YES YES DSTC shows stable NO Lower the ambient temperature by starting air conditioner or fan DSTC shows stable NO v v Heat Heat dissipation OK dissipation badness 19 Figure 10 Dust Lead to Instabil
11. Diagnostics amp Stability Test Card User s Manual Version 1 1 Advanced and Unique Please read this Manual before using Chinese Patent for Invention O3126857 9 Certificate Number 208776 All rights reserved Made by QiGuan Electronics Co Ltd QiGuan Electronics Co Ltd Preface Thanks for choosing Diagnostics amp Stability Test Card DSTC of QiGuan Electronics Co Ltd If you have any question please visit our website www pc diagnosis com for detailed information or send e mail to p678 163 net We will give you answer as soon as possible Thanks for your trust and support DSTC of QiGuan Electronics Co Ltd is kind of high performance product that can troubleshoot failures and test the stability of computers And it is simple and easy to use Using ultra large scale IC integrated module DSTCs are really top quality products They are compact structured stable and reliable and have more richer internal resources more excellent anti jamming performance and lower rate of self errors All software are built in the users do not need to install software Combining advanced technology and user behavioral science the functional design is humanized to be convenient and user friendly QiGuan Electronics Co Ltd is specialized in research development and production marketing of PC diagnostic cards her main series of products like New Generation PC Diagnostic Card Kingnostic Card and DSTC are under the protection of
12. Nee tE EEEE ne AE En ENEE RENEE 21 Figure 12 Error Caused by Bad Contact ssssrrssssrrrrrrerrrrresrrrrresrrrreerrrrrresrrrrrere 22 Vi FAO and OUI S ecseri resintere RE ENRE ENNE 23 1 How to choose stable UPS with DSTC ccce cece cece eee ee sees sees eee eeaeeeeesnaneeeeannees 23 2 How to check the peripheral disturbance with DSTO cccceeceeeeeeeeeeeeeeeeseuaeees 24 3 How to choose computers used for important occasions with DSTC ccceeee eas 25 4 Going on the test without removing the hard disk from the computer has any influence on the computer Answer Going on the test without removing the hard disk means abnormal shutdown No other bad results We suggest removing the hard disk from the computer DEINE TES egien ea aides iatausetnduaes seceusec dees bidawsaerdieuectbiese bes pebeideusaasdetauetecsaenenseds 25 5 Why the normal computer go wrong when the case iS OPENed ccceeeeeeeeeeeeeees 25 6 How to DUrchase DST Cl sccsccrncrcnctdnudrecdasdeutecndvel ets dettavcladteedesseiadeccsethuscsneaiatesteusscs 26 7 Why the Clock Indicator needs to be improved and what s the advantages of IVIL OV CINGIN ecakbecsuneeceheajereccartauaceiateshatacsaniericlannauadeenseteadieien sae iadersss pcre eiaueesisensees 26 a QiGuan Electronics Co Ltd j Introduction of DSTC Components Picture of DSTC Components MKCP6A for example Connect to the RESET on the case there is no nee
13. ackup NO Remove the hard disk i f s Found error by lt Error i Is it stable when Analysis flowchart gt 7 power on YES YES NO 4 Is the test computer unstable in daily use Or Found error by lt Overclock is it unstable in testing and CUP frequency through other methods characteristic drops flowchart gt YES v NO Need to prove Vv again Whether consult lt Not enough power load capacity NO e ae flowchart gt to find the reason Vv that cause the Does error N test computer to hide be unstable use YES NO software utilities Y YES t l v O repair trying use and then test YES gt to find the reason till it becomes serious or days later i NO NO v y Whether consult lt Dust lead Consult Methods to induce 2 instability pene to instability flowchart to eliminate find the reason NO Find the reason through induction Whether consult lt Strong magnetism interfere NO Vv Can t find the reason for the moment The computer is in good condition End flowchart gt to find the reason NO v Whether consult lt Bad contact flowchart gt to find the reason Eliminate errors NO y YES gt YES gt YES YES gt YES YES gt YES 12 Figure 3 Unstable Components Analysis gt Data backup Change to the components that may work stably
14. aseenscsaes 7 1 Meaning of POST Codes and Analysis amp Solution of Stability Test Result 008 7 2 Slats OF Stab TESE cereis irr nan EEE EAr EE 7 Ss Status OF INdicator LIONS ssirircsrrrreteri K rke narini n REVENE ERETRIA netted 8 V Basic Operation FIOWCMGNIN sci eiscrsidorsakrdebneetecdeasausadediennansdedivelsediateleehtbideiddessadvidsdessieniass 10 Foure L General PIOW CNAME cvaescsciedesceetecussdenvecrienenarien tne ded sosdenveersaeesurisad EEEE 11 Fig re 2 Instability ANAlYSIS sie sactsacaiecerdesndetesteniaratsavSaddgridess ded AE 12 Figure 3 Unstable Components AnalySiS ccccccceeeeeeeeeeeeeee ee seeeeeeeeeeeeeesnnneeeeannees 13 Figure 4 Method To Induce Instability ccccc cc ccecce cece eee eeeee tees eeseeeeeeeeeesngaaneneees 14 FIGUrFea 5 Reset Error Analy StS csvcsidcsscc eck cipdeneddvsanuneayeedasebskisaaenreersaennuasaciawesetntonans 15 Fig re 6 AC Error ANiGly SiSi 2d2ssicaterenederaesden tarp neacidatacenddardessdeu EAEE RNA 16 Figure 7 Mixed Memory BaiiK evecare cccccerereuiacssadnatvenceneiseuerves nd EEEE EEEE RR 17 Figure 8 Not Enough Power Load Capacity ccccccccceeeeeeeeeee ee eeeeeeeeeeeeeeeeeaneeeeannees 18 Figure 9 Bad Heat Dissipation vei euciececvasrexcavwcorecrsuevede beanie EEE ACEEA eaeeecesaas 19 Figure 10 Dust Lead to Instability nsusnsnusrrrerrrnsrrrnrrrrrsrrrerrrrerrrerrrrerrrrrrrrsrrreee 20 Figure 1l Magnetic DISEUPO ANCE eseisrerirssrxsiirssritir kii
15. ata processing Stability test aa the wipe PCI with stable 1 Dirty rubber or plug in indicator PCI or PCI and pull out and the Abnormal in poor repeatedly to Random unstable diagnostic contact make it in good indicator function contact are never 2 Bad n Return to the off or Diagnostic supplier never on card 3 Status of Indicator Lights Stable 5V i Indicat RESE CLK 12V 12V or Mean Cause solution No Code Indicat 3 Bad Return Diagnos to the tic Card supplier 1 Bad Refer to Neve Reset Reset Figure 5 gt Rando Rando r Rando Rando Rando Rando Rando keene Circuit m been m m m m one 2 Bad Return off Diagnos to the tic Card supplier wipe Give 3 Rando Rando no pi mi A on notice or T Light ng Light on off wipe PCI with rubber or plug in and 1 Bad pull out contact repeate Neve diy to 1 Rando Rando r Rando Rando Rando Rando make it m m been m m m in good on contact a Refer to ane Figure 5 circuit m PCI with rubber or plug 1 PCI in in and poor pull out contact repeate diy to make it in good contact 2 Bad Return Diagnos to the Pa P tic Card supplier on 3 No 3V Normal notice notice circuit repair of 3V the chip power Rando Rando m m 5 Rando Rando m m Give no notic e Give no notic e Give no notice Give no notice Give no notice Give no notice Give no notice QiGuan Elec
16. bility 13 QiGuan Electronics Co Ltd Figure 4 Method To Induce Instability Data backup l Cleaning i Use reasonable method to induce the errors or it is risky to cause more errors Common methods 1 Raise or drop voltage 2 Heating or cooling 3 Vibration or hit 4 Signal interference 5 Increase load 6 Drop load 7 other methods DSTC shows error code YES Eliminate errors NO according to v POST codes DSTC shows stable YES NO y Refer to unstable component Vv analysis flowchart to eliminate Inducing Test failed errors End 14 Figure 5 Reset Error Analysis QiGuan Electronics Co Ltd Has Reset Indicator never been on NO v Has Reset Indicator never been out YES lt Check the Reset Line and see if it is connected correctly YES y Reset Circuitry conducted but Reset not bounced Reset bounced but Circuitry Reset not conducted NO lt NO NO gt Connect the Reset Line as indicated YES gt Draw Switch the from Reset the case and then put it back y Bad Reset circuitry or Reset Signal failure l Repair the chip End 15 y When power on
17. d to Connected to RESET contact connect the Reset Line to the Reset Line pin on mai board Soar you don t need to use eset Connected this plug to the white socket as indieated Stable indicator light Unstable indicator light LED indicator or rit fx a J MODEL MKCP6A chip BNET TA PCI data interface Real product may differ to the picture please refer to the real product Our products will be improved without further notice QiGuan Electronics Co Ltd How to connect the motherboard and DSTC Pay attention the connection of motherboard and DSTC Please pay attention to the connection of the RESET line rr connected to RESET contact connect to RESET switch on the case connect to RESET outlet on Diagnostics amp Stability Test Card II Features of DSTC Features of Stability Test 1 It s simple to identify the test result red indicator light means unstable and green indicator light means stable When the red and green flashes alternatively and quickly the DSTC is testing the stability 2 DSTC can tell you whether your computer is stable or not no matter you computer works now stably or unstably And it also can help find the factors not matter they are invariable factors or variable factors such as occasional and invisible potential factors 3 It works more efficiently and stably than traditional PC Diagnostic Card It never stops in testing 4 It is independent
18. erboards that have PCI slot have no 3 3V voltage so the indicator light will be off The indicator will be always on when power on Part of the motherboards that have PCI slot have no 3 3V voltage so the indicator light will be off The CLK will be on when there is clock signal impulse and will be off when there is no clock signal impulse no matter the current Signal stays at high or low level which won t mislead the user that there is clock signal impulse It is normal that the indicator light is on for a half second and then become off when start the computer or press the RESET If the indicator light is never off usually it is because the Reset Contact Pin on the main board is pinned to the Accelerate Switch or the Reset Circuit is damaged If the test computer is not stable there is potential errors or the accessories do not match with the host the unstable indicator light will be on The test computer is stable and no potential errors the stable indicator light will be on 1 There are two digit display four digit display and 6 digit display for your option 2 There are Reset indicator CLK indicator 3V indicator 12V indicator and 12V indicator The Reset indicator and CLK indicator have been completely upgraded The CLK indicator is 100 correct and will not mislead the users The users can see the clock pulse fluctuation clearly even the single 10ns clock pulse The CLK indicator will be off when there is
19. est Result code Stability Indicator Light on for half a second then off OK on for half a second then off code Error unstable code 2 Status of Stability Test Stability Indicator Light on for half a second then off on for half a second then off on for Green and Red both on Flash alternately and quickly Flashed Flashed CLK flashed flashed O i i n n 5V LED 5V LED on off pe fede Meaning no error is detected but not stable detected errors but no errors of instability detected errors including errors of instability in troubleshooting in stability test Reason 1 motherboard and its accessories are contact in poor Solution suggest regular or irregular test of stability check the motherboard and its accessories and see if they are contacted well 2 error of Refer to instability figure 2 3 Bad test card motherboard error 1 Reset Line connected wrong or not connected 2 Only error of instability 3 Including errors of instability and other errors return to the supplier eliminate the errors according to POST codes check the Reset Line and see if it is connected rightly Refer to Figure 2 Eliminate the errors according to POST codes and Figure 2 pm fem pm fem Flash alternately and slowly half a second then off 3V on on i Interior d
20. ity QiGuan Electronics Co Ltd Data backup Clean the fan of the power i DSTC shows stable NO v Clean the magnetic head the floppy drive or iaser head of CD ROM lt _YES lt _YES lt q YES a YES y The impact of the dust DSTC shows stable gt 1 Clean the CPU fan DSTC shows stable NO y Clean the dust of the motherboard l DSTC shows stable NO t Dust impact is not End 20 QiGuan Electronics Co Ltd Figure 11 Magnetic Disturbance Data Backup Eliminate external interference Keep the computer far away from the electronic equipment such as inverter air conditioner and TV sets Shows stable YES NO Eliminate internal YES interference Remove the hard disk and video card etc lt YES lt Shows stable gt NO y y Magnetic Probably it is not interference magnetic interference Need to prove NO End once again 21 Figure 12 Error Caused by Bad Contact lt _YES lt _YES lt _ YES t 1 _ YES y Bad contact Start y Data backup y Bad contact of socket and change to okay socket
21. national patent Patent NO 03126857 9 and CE certified All rights reserved We do not produce traditional products any more all users please pay attention to the Logo 777 and the anti counterfeit label The specification and other information mentioned in this manual is just for reference Its real content will be updated regularly without further notice For latest product information please visit our website www pc diagnosis com Welcome to visit the website of QiGuan Electronics Co Ltd http www pc diagnosis com l Ntroduction OF DSTG COMPONENTS isic5 dscnserdacercereghaddensadsnndhegetedanddnsaseidakiidaneatidebssessassseads 3 Picture of DSTC Components MKCP6A for example cccccce cee ee eee eeee eee eeeeeaeeeeeaeeaes 3 How to connect the motherboard and DSTC cccccccce cece eect ee eeeee ee eeeeeeeeeeaeeeeeaene eas 4 hs Fec uree OF IDS WC ea EEEE R A E R 4 Features of StaDIUty TESE c ic2su sch etieuvedseviaienssstiedurddedadedeleddanketpchihederddinadidtensetaatieeess 4 I Features OF indicator NONIS cscciiicicnntedsradenewcoiacisarradenset si iakeeeeeireineeniie EEEN 5 lI Features Of TrOUDIGSNOOUING ieccccccccdsideescedssieticrecdeuscesciactanded ecigdietonisvenesstciediaeesdeds 5 Els Stability Test FIOW CNG lt civiensacauerieceiects poneveervehnniueiwied rade sehen esis ARSAN RERE ENEE 6 Vi Meaning of TeSt RESUMS 1 i42derhcdaveenidiesiereasssieusaeeedaubentdatvenstccedienpastiiaabidendesidiiia
22. replace the hardware 25 QiGuan Electronics Co Ltd 6 How to purchase DSTC Answer If you are going to use it for repair we suggest that you buy motherboards without components If you need to fix it on the host you d better buy the models with external LEDs fixed on the hob 7 Why the Clock Indicator needs to be improved and wha s the advantages of improvement Answer Clock signal of the PCI Bus is usually through the ways bellow 1 Traditional motherboard use static Clock There is always clock signal no matter if PCI slot is plugged with expansion card or not and the expansion card is working or not Now most of the existing motherboards use dynamic Clock There is Clock Signal when it is working and there is no Clock Signal when it is off Unlike data signal control signal and other Bus Signals under general circumstances there will be Clock Signal immediately when power on successfully and it will keep on until the Reset Signal is out Even if you press the Reset and never loose it the Clock Signal will bring out Some traditional diagnostic cards have two design defects Clock Signal is too fast to catch by naked eyes which always mislead users that there is no Clock Signal When the Clock Signal is out traditional Clock Indicator will be on no matter if it stays at high or low level which will mislead users that there is Clock Signal The Clock Signal of DSTC has been enhanced to be 100 accurate
23. tronics Co Ltd Give no notice 1 PCI in poor contact 2 bad diagnos tic card 3 short circuit of 12V power 1 PCI in poor contact 2 Bad diagnos tic card 3 short circuit of 12V power wipe PCI with rubber or plug in and pull out repeate diy to make it in good contact Return to the supplier repair the chip wipe PCI with rubber or plug in and pull out repeate diy to make it in good contact Return to the supplier repair the chip V Basic Operation Flowchart Start Vv Data backup Vv Insert the card into PCI slot AA Insert the bigger white terminal of the Attached Line in DSTC and the smaller black terminal in the Reset Contact Pin of the test motherboard If there is need to use Reset Switch on the case then connect the Reset Line with the other end of the Attached Line There is no need to remove the data cable because the test computer has to be reset to change the test circuitry before starting stability test and_avoid damage of data System files in the hard disk caused by restarting Starting the test without removing the power cord from the hard disk means abnormal shutdown and won t cause any bad results Power on when connected correctly or the card will show unstable even if the computer runs stably f DSTC start working refer to Stability Test Flowchart
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