Ibm Xt Error 301
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Eurosoft/Mylex Faraday A-Tease HP IBM Landmark Microid Research/Mr NCR Olivetti Phillips Phoenix Quadtel Supersoft Tandon Zenith Intel Motherboards: CA810E CC820 SE440BX-2 D810E2CB D810EMO D815BN D815EEA D815EPEA D820LP SE440BX SR440BX JN440BX ibm error codes LB440GX/L440GX N440BX/NA440BX OR840 T440BX RC440BX VC820 For their PS/2 systems, IBM used a
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system of diagnostic codes to diagnose trouble spots in a given computer. The problem was, these diagnostic codes were
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never really documented all that well. The codes that I am presenting here are from documents I have read through, found on the web, found in old books, documents and technical
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papers. As a computer technician, I rely on documentation to guide me through these types of messages. Therefore, I hope to provide this to all those other technicians out there who get the opportunity to work on one of these. And, yes, people still use them and some refuse to give them up. The method for reading these codes is pretty straight forward. The ibm checkpoint codes first part of the error code indicates the device that is causing the trouble. The second part gives the meaning of the error. You can think of the first part as the test code and the second part as the fault code. A fault code of 00 indicates that no problem was found. Thus 200 means the system memory was tested. The 00 means that no fault was found. 201 would mean a memory error. 202 would mean memory address error; lines 00-15. This page is rather extensive and will be updated on a regular basis. Like all the other codes out there. If you know of any error codes that I am displaying incorrectly or that aren't here. Let me know and I'll get it corrected as soon as I can. Thanks to Mike Rose for erors 129 and 229! System Board Errors: Code Description 101 System board interrupt failure (unexpected interrupt) 102 BIOS ROM checksum error (PC, XT); timer error (AT, MCA) 103 BASIC ROM checksum error (PC, XT); timer interrupt error (AT, MCA) 104 Interrupt controller error (PC, XT); protected mode error (
numerical order. For example, the hard drive tests are done in order of 1782, 1780, 1781, 1790, 1791 Error As shown on screen Description 161 161-System Options Not Set-(Run SETUP) Battery problem. Some possible causes: ibm post error codes * Battery is dead/low - replace it and then run the SETUP procedure. * A dead/low what dos command do you use to erase a hard drive and make it bootable? battery was replaced with new but the SETUP procedure has yet to be done. 162 162-System Options Not Set-(Run SETUP) CMOS/RTC checksum problem, 162 configuration change has occurred ibm server or other configuration issue. Known causes: * A hiccup of some kind has corrupted CMOS/RTC configuration (SETUP). Correct this by running the SETUP procedure. * Battery is dead/low. Some 5170 motherboards, for unknown reason, don't produce a 161 error. http://www.bioscentral.com/misc/ibmdiag.htm Check/replace battery, and then run the SETUP procedure. * A CGA video card is fitted, but the CMOS/RTC configuration (SETUP) is set for MDA (monochrome), or 'special' (EGA/VGA). * An MDA ( monochrome) video card is fitted, but the CMOS/RTC configuration (SETUP) is set for CGA, or 'special' (EGA/VGA). 163 163-Time & Date Not Set-(Run SETUP) Clock (RTC) error.[ detection of invalid time values in RTC chip, or clock not ticking over] Some possible causes: * The SETUP procedure http://minuszerodegrees.net/5170/post_errors/5170_post_errors.htm was started but not finished. * Motherboard failure (in RTC related circuitry). 164 164-Memory Size Error-(Run SETUP) 164 NOT PRECEDED BY A 201 ERROR The amount of base RAM and expansion (extended) RAM discovered by the POST is more than the two amounts recorded in CMOS/RTC configuration (SETUP). Some possible causes: * User has added RAM but failed to then perform the SETUP procedure. * User ran the SETUP procedure, and during that procedure, entered incorrect amounts for the RAM (ones lower than fitted). 164 PRECEDED BY A 201 ERROR Deal with the 201 error first. Correcting that will probably remove the 164 error as well. 201 201-Memory Error RAM related problem. Displayed on screen in the format of "AAAAAABBBB201-Memory Error", where AAAAAA is the hexidecimal address (in bytes) of the failing word and BBBB shows which bits in the word have failed. You can use the diagram here to calculate the failing bit/s, and the address as a KB figure. Sometimes, you may see an address that is one word beyond the actual failing address, e.g. 080002 instead of 080000 NOTE: If the BBBB portion (failing bits) contains many "F", example: "FFFE", then it is highly likely that non-existing RAM is being tested. For example (one of many), this would occur if the machine SETUP is configured for 640K of RAM, but only 512K is fitted. For example (one of many), a RAM card ha
had lots of problems, firstly the power supply packed in which turned out to be diodes gone short. Then the http://www.vintage-computer.com/vcforum/archive/index.php/t-39355.html Rodime hard drive went bang which was a found to be bad tantalum that blew it's top off and melted the ribbon cable slightly. This I replaced and tested on another board and amazingly still works. The full height tandon floppy doesn't work but I'll get round to fixing that later. What is really driving me mad is the 301 error, I have replaced error codes the plug on the keyboard and even tried a clone keyboard with at/xt switch. I have even destroyed a perfectly good 8255a Pia chip which was a nightmare to remove and socket hoping it was this that was causing the problem. So new PIA and still no go, I am running out of ideas if anyone can offer somewhere else to look at!:confused: Chuck(G)September 24th, ibm xt error 2013, 08:49 AMDid you replace the 74LS322 shift register? That's really the core of the keyboard controller. Pet RescueSeptember 24th, 2013, 09:15 AMDid you replace the 74LS322 shift register? That's really the core of the keyboard controller. Thanks for the reply Chuck(G) I haven't replaced the 74ls322 but I certainly will, I should have posted here first before destroying the PIA! What could have caused it to go faulty? Unplugging the keyboard when switched on or the power supply blowing? StoneSeptember 24th, 2013, 09:30 AMHave you tried a known good XT keyboard that is *not* a switchable AT/XT model? Chuck(G)September 24th, 2013, 10:01 AMYou could probably damage the '322 with a simple ESD accident. This is a real XT, right? Let me stare at the schematic a bit before you haul out the soldering iron. Okay, the 322 (U27) is a likely suspect; less so, the 175 (U21). Amazing that there's no buffering between the connector and the '322. You'd think that IBM would have inserted a schmitt trigger at least on the receiving end. Do check out Stone's suggestion that you find a real XT keyboard first, however. Absent that