System 8813 Confidence Manual - PolyMorphic
Contents
1. H H B H D D e ae e E a L H 9 9 9 9 9 9 o E 9 9 B 9 9 9 9 5 sg Li H D H B H zs eeges gees gege seeesgeessgesegesesgsgsgsggegsgeesegesgeggs se D D UE E E a D D D D D Li r D D H U zs 9 E 99 9 9 X eee gt X eee 7 6 5 3 2 1 0 Only error summary printout will work with this test When you choose this test a summary is printed at the end of every pass PolyMorphic Systems System 88 Confidence Manual Page 11 2 3 3 Printer Interface Test Before selecting this test insert the printer test plug in the printer output port on the back of the System 88 If the system fails this test see Printer does not work in the card isolation section of this manual If the test finds nothing wrong you will see this display System 88 Printer Interface Test V 3 0 Passes completed 60119 Total Errors 0004 Error Baud Rate If the test finds errors you will see a display like this System 88 Printer Interface2. to B dtion a REBATE AC n cra ara TRO aa e A ind HARDWARE VERSUS SOFTWARE PROBLEMS 13 CARD ISOLATION ae amp o eg A ok A TA a x 14 MEMORY CHIP ISOLATION a a 24 3 3 1 Common Considerations and Techniques s 24 2 CPU Card Memory Chips 2 ew a sw 24 3 Video Terminal Interface Card 24 4 Isolating Chips on Memory Cards 24 5 16K RAM Memory Chip Isolation 25 6 BL 1 W GA Ly 2 F 8K RAM Memory Chip Isolation cal E DENSITY CONTROLLER CHIP ISOLATION ine e 29 88 MS Double NE Controller Chip Isolation e 2 Double Density 5 Chip Isolation lore S FIDENCE TEST 4 m e avn her otra nah Sm Opie og a dO L Ri Gerd et o massa ra o ne a det a OS 2 Disk Read eet sow A 4m 4 Oa x39 m Mamory Test gx n A A ALADO S ad ot 352 NSIVE MEMORY TEST j PRINTER INTERFACE TEST e a 1 0 0 s 96 4 VTI TEST kd 36 Drawings Sequence of Test for the Confidence Test 34 Sequence of Test for Video Terminal Interface Test 37 Assembly CPU Board e gt se ss ee ess wie 38 Assembly Video Board A oe e Z ei aie ts amp Ze eis e 39 ASSOMDIYSLERK RAM A Ar 4 4 5 amp 4 Wow od 9x QS Sep RAMS arc AD AS ey 979 Ry uh e A PI AE o OBS Assembly Double Density 5 Disk Controller 42 Assembly Double Density 8 Disk Controller 43
3. o e em rem rm i SYMPTOM No alpha numeric characters on screen only graphic characters will appear REASON VTI is not switching properly PROBABLE CAUSE Defective VTI card m e i e i rm e r o re e rr M a M t S n M il A SYMPTOM No graphic characters on screen only alpha numeric characters will appear REASON VTI is not switching properly PROBABLE CAUSE Defective VTI card SYMPTOM Display rolls vertically REASON Loss of or inadequate vertical sync POSSIBLE CAUSES A Video monitor not adjusted properly vert hold B Defective VTI card C Defective video monitor SYMPTOM Horizontal tearing of video display REASON Loss of or inadequate horizontal sync Page 18 System 38 Confidence Manual PolyMorphic Systems POSSIBLE CAUSES A Video monitor not adjusted properly horizontal hold B Defective VTI card C On VTI revisions 0 0 0 1 and 1 2 No phase 2 clock from CPU card which indicates a defective CPU or backplane D Defective video monitor SYMPTOM Steady display with correct characters but a grey or black horizontal band moves slowly from bottom to top on the screen cyclic REASON Positive 5 volt supply on VTI is not pure DC POSSIBLE CAUSES A Defective VTI card B Defective power supply em m vm
4. Memory Data Error to Bit Number Table E E m r vm 9 r M e M M ee o pe e i Data Error Memory Bit Hex Digit Low High 0 none none 1 0 4 2 1 5 3 0 1 4 5 4 2 6 5 0 2 4 6 6 La CS 3 4 7 Ov 15 2 4 5 6 8 3 7 9 0 3 4 7 A 1 3 by Y B Oy Li 3 i 5s 4 y 2 6 7 D 0 2 3 4 6 7 E Le n A Sy OF 7 F 0 Le 2 3 A 5 6 7 As displayed in the Confidence Test screen display As displayed to the right of low or high in the Confidence Test display 4 Isolate the memory chip As an aid in locating a particular memory problem on memory cards a procedure is provided below for both the 8K RAM and 16K RAM memory cards 3 3 5 PolyMorphic Systems 16K RAM Memory Chip Isolation 1 Find the memory card with the memory problem If the System 88 contains more than one memory card you must determine which card the problem is in To do this you must know or figure out what part of the whole address spectrum is made up by a particular memory card If the memory error occurred within that part of the spectrum the problem will usually be in that card The portion of the address spectrum Page 26 System B8 Confidence Manual PolyMorphic Systems for one 16K card ends at an address 3FFFH greater than its starting address The
5. Bad track Q switch on the selected drive Circuitry to detect this may be at fault PolyMorphic Systems System 88 Confidence Manual Page 33 Section 4 TECHNICAL DISCUSSION OF TESTS Except where the sequencing of a test is self evident the discussion of each test below is followed by a block diagram flow chart of the test program 4 1 CONFIDENCE TEST The Confidence Test is made up of two files on the disk which depend on each other to complete The first file is the INITIAL file It is the supervisor for all tests in addition to containing most of the three tests below This structure enables Confidence to test all of the memory of the system and also take precautions such as doing a checksum on itself before running Three parts of Confidence are executed on the first pass only They are the checksum of the test itself the Memory Map routine and the Video Memory Test If the checksum of itself is not correct it will abort normal sequence and load and execute the High Memory Test overlay which tests memory addressed greater than 3200H After these first three tests Confidence cycles through three other tests the CPU card test the disk drives test and the memory test The Memory Map routine searches the address spectrum above 1000H and reports the amount of memory it sees and what address this memory starts at This is displayed in the bottom four lines of the screen A graphic representation of this is displayed below t
6. The above display reveals the following things about the progress of the test l Zero days zero hours 2 minutes and 43 seconds in processor interrupt enabled time have elapsed since the start of the main loop of the test When the system runs this test it must sometimes disable the interrupts While interrupts are disabled the system cannot access the real time clock so time is not kept during such periods The Elapsed Time displayed is the total time that the test has run while the interrupts were enabled Actual elapsed test time is always somewhat greater than the figure displayed how much greater depends on the number of disk drives and the number of errors found 2 The CPU card tested good 3 Four passes of the test has completed 4 There were no memory errors PolyMorphic Systems System 88 Confidence Manual Page 9 5 One cycle of the Disk Read Test was run on each drive and tested good on all three drives 6 The first three lines of the four lines at the bottom of the screen indicate the total number of soft and hard errors for each disk drive the test has accumulated since its beginning 7 The bottom line names the last three tests performed in a pass of the test When one of these three tests is in progress an arrow not shown above points to the IK block of memory being tested by that particular test 8 The amount of memory in the System 88 under test is graphically represented by the line of stars an
7. A memory error in one of these chips will be designated by data under one of the four marks under CP in the Confidence Test memory error summary display The four marks from left to right correspond directly to chip numbers 21 through 24 The data represented is not as important here since each memory chip is used for four bits of a word It does in any case represent what bits were incorrect 3 3 3 Video Terminal Interface Card There are eight memory chips located on the VTI card numbered 21 through 28 See the VTI card layout in the package of drawings appended to this manual to locate these chips A memory error in one of these chips will be displayed directly on the video screen The program displays this in four places on the screen and stops so you have a good chance of getting the message 3 3 4 The Basic Steps for Isolating Chips on Memory Cards There are essentially four steps to take to find the bad memory chip after knowing the incorrect data and corresponding address block PolyMorphic Systems System 88 Confidence Manual Page 25 1 Isolate the memory problem to one memory card 2 Find the address of the memory problem relative to where all memory on that card is addressed This will isolate the problem to a portion of the memory card 3 Find the bit number s of the problem This may be obtained directly from the Extensive Memory Test Use the following table to fnd the bit number s from the Confidence Test Data
8. Display graphics Display characters Print summary or characters 1f selected Was any key depressed A TO BE INSTALLED AFTER FLOW OLDER OPERATION A ICAT MONITOR FOM N 053020 A FOR DISK SYSTEM A 1025 DOT ROM 400 FIN 035023 B C2 amp ROOT om 400 P N 035030 B 7 Sg ZZ ZA HI aos NOO DODDO DA Dr 1 Pe o Aa vus ER s lt M Es di JUNPER Y 24 BUM WIRE VOODOO OG fate i C Hp A n E 5 TOK 711 d ES NM ic23 x ih dE Hu eed Zem an gin PERN d mm a 2 Mila La aen Be Ber SES lr Press ORE i EHE gpr 30 WIREWRAP WIRE e i T d z ti 1 ij H JUMPER E TO 2 JUMPER F To Z 4 BUSS WIRE 24 BUSS WIRE WITH TEFLON TVEING WITH TEFLON TUBING GROUWD JUMPER 8 AVSS WIRE WITH TEFLON TULA ASSY CPU ADARO UBA BIA UII S 001062 1 Y NA M OS d ESSA iub vid ups AN Poo cum PLE qn uius if A IC SOCKET REGO Ay AMIT RI AND 3 FOR USE WITH DISK SYSTEM TO AE INSTALLED AFTER FLOW ANDER OPERATION PB MODIFY PER DLL 13514 JEE PARTS LIST ODOR la DN FOR SONZ OPERATION i A CUT TRICE FROM CENTER PAD TO ye POL YAE PHIL SYSTEMS bone nr IMP MES Z IMPO Aus PAD TD IT mos f JMP a L AS Y WV DEO BMRA brs TAQ Si BE AN 0ivos s z AS m ae 7 TT s Bo ze M M A A 090099 re
9. PolyMorphic Systems System 88 Confidence Manual Page 1 INTRODUCTION The PolyMorphic Systems User Confidence Package lets you test your System 88 computer regularly so that you can be confident that it is working well To use it you insert a disk into each drive of your System 88 including each drive of your 88 MS if you have one To run the test program push the Load button The Confidence Test segment runs automatically upon loading of the system You can cause the other tests to be executed by typing CTRL S and selecting the appropriate number from the menu of tests The results of the tests are displayed on the screen and are easy to recognize You don t need to know anything about computers or electronics to test your system Computers are extrememly reliable and trouble free There is little that can break or get out of adjustment The infrequent problems that do arise can be identified in their early stages by confidence testing and your dealer can make repairs before the problem has a chance to do any harm These confidence tests will tell you if the computer is starting to misbehave in some way Beyond that they will tell you in some cases which particular part is about to start causing problems but in general they are not intended to isolate a developing problem to a particular electronic component Once you know that a problem is developing your dealer can perform diagnostic tests that narrow it down to a particular item in
10. adjusted properly or defective monitor ISOLATION PROCEDURE A Check POSSIBLE CAUSES A and B below B Adjust video monitor BRIGHTNESS and CONTRAST controls You should be able to obtain a bright screen I not see POSSIBLE CAUSES E If you can get a bright rectangle on the screen the video monitor is probably functioning correctly C Check the other POSSIBLE CAUSES POSSIBLE CAUSES A No power to the system Check power indicator light red light over On Off switch AC line cord fuse and On Off switch B No power to the video monitor Check power indicator light AC line cord fuse and On Off switch C Video monitor cables disconnected or defective Check cable from VTI to rear panel of computer and cable from rear panel to video monitor D Defective power supply E Defective video monitor F Defective VTI card G Defective CPU card unlikely mm m r E M ee r A o a M s F R PolyMorphic Systems System 88 Confidence Manual Page 17 3 SYMPTOM Random characters on screen REASON Random characters stored in VTI memory POSSIBLE CAUSES A Improperly addressed VTI card B Defective VTI card C Defective CPU card D Defective backplane lt r m E i a re i c r M
11. ava gr w 7 QD TPI THRU TPF 4 POSITION DOP Sw mar BE SUBSTI TUTED FOR toi SWITCH MOUNT IN UPPER B HOLES 2 MOOIFY PER DWE 30190 A TO SE INSTALLED AFTER FLOW SOLDER OPERATION St 53 PPOWIX NECE ID Y n GH SY i C36 KT L for iii sO ch Ui MA JUMPER AS SHOWN USING IB INSULATED WIRE FDLYMORPHE SYSTEMS ASSY IO RAM L O 2 bi Y 24 E y ie EE 99402 1 9802 piba EG GE pita IPERE peter En K 102 fach t2 Y ee eo AD ee P pam i pe E ii gt Z Ta Hoge saat lt gt Ki a rea Azar egt Sf a AE T A RH Ih e En 025 dcr tme hs o ght gt KA ia as gt nat LA gt 22242 DEE Y 2 a E MED 7 T4 CX GY ADD Y ZS EK red C8 ERZ Cx AE NOAA AMI JUAS Y CH COAT uris AAS JUOD E TOL D D wifi S AGM JUAWER IAT L Gin FES OR 20 SA EH Ze TURE d DATE CONE SAW MAN y pr RE 10204 u MU r PAI mmal e 005272 A SYSTEMS POLYMORPHIC ASSY DOUBLE DENSITY 8 BIC CONTROLLER POSE rrur E Ut CH S mi ran v Thi i wR rn y eer rrn b vo P man rn KK KE TER sie pue ma od 4 130 521 Am 3 trae Al lav e ZLOCNEWVS AT rne EXCEPT ON IC QUOC INSTALL ar IER FL ZM SOC LY AN z AR PM ET FER TANIA
12. disk for your use If you have some kind of printer not included among those on the disk you will have to add a device definition corresponding to your printer this may take quite a bit of trial and error See the System 88 User s Manual for more information about the printer driver The default device and parameters may be viewed and changed by typing CTRL Y and then Printer Of course the write protect tab must be removed from the disk to edit the printer driver After doing this you can restart the test by typing INITIAL or pressing the Load button If you select the error summary printout you will get a display summarizing the errors found on every pass of Confidence The error printout selection prints on the printer all the error information that is presented on the scrolled display that occupies the bottom four lines of the screen 2 2 1 2 Extensive Memory Test PolyMorphic Systems System 88 Confidence Manual Page 7 The Extensive Memory Test is a thorough worst case test for the memory of the System 88 Because it is rather long the test may be run once a month It takes about 90 minutes to run the test once for every l6K of memory in the system 2 2 1 3 Printer Interface Test This test checks out the Printer Interface Card and the serial communications circuitry on the CPU card 2 2 1 4 Video Interface Test The Video Interface Test displays all characters and graphic symbols of the System 88 character set Compare this
13. starting address is the beginning of its part of the spectrum To isolate a defective memory card First pull out the memory cards and examine their address DIP switches Using the starting address table below write down the starting addresses of each memory card in ascending order Then select the card in whose address section the bad memory is located For instance if the starting addresses are 2000 and 6000 a fault at 4C00 is in the card with the starting address 2000 Below is a table you can use in conjunction with the switch positions of the DIP dual in line package switch located near the edge connector of the memory card to figure out the starting address of the memory card Starting Address versus Possible Switch Settings Switches Starting 1 2 3 4 S 6 7 Address Switch Position not used 00008 off off off off 10008 on off off off 20008 off on off off 3000H on on off off 40008 off off on off 5000 on off on off 6000H off on on off 7000H on on on off 8000H off off off on 9000H on off off on A000H off on off on BOOOH on on off on coooH l off off on on D000H on off on on E000H off on on on FOOOH on on on on 2 Find the address of the memory problem relative to the Starting address of the card This relative address will isolate the problem to one of four areas on the memory card From the Confidence Test summary display of incorrect memory data each of thes
14. to isolate some of the more obvious problems found in the System 88 computer systems It is not possible to document all possible problems nor is it possible to identify ALL of the possible causes for the more common problems This guide should prove useful if you remember the above exceptions and use standard logical troubleshooting procedures Most computer problems produce obvious symptoms on the video Screen so most of this section deals with screen symptoms We will list and number the symptoms first then discuss the probable causes 1 Drive 3 turns on momentarily when the system is powered up or the Load button is pressed 2 Screen is blank 3 Random characters on screen 4 No alpha numeric characters on screen only graphic characters will appear 5 No graphic characters on screen only alpha numeric characters will appear 6 Display rolls vertically 7 Horizontal tearing of video display 8 Steady display with correct characters but a grey PolyMorphic Systems System 38 Confidence Manual Page 15 horizontal band moves slowly from bottom to top on the screen cyclic 9 Wrong characters appear at certain screen positions This does not include characters that the VTI is not supposed to be able to produce see improper dot patterns 10 Improper dot patterns This includes any character position that has missing or extra dots ll Incorrect characters appear when the keyboard is used 12 Multiple char
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16. 3 6 PolyMorphic Systems 8X RAM Memory Chip Isolation If the System 38 contains more than one memory card you must determine which card the problem is in To do this you know or figure out what part of the whole address spectrum a memory card occupies in the system If the memory error occurred within that part of the memory spectrum the problem will usually be in that card The address region for an card ends at an address lFFFH eight stars greater than its Starting address The starting address is the beginning of part of the spectrum Below is a table you can use in conjunction with the switch positions of the DIP dual in line package switch located near the edge connector of the memory card to figure out the starting address of the memory card To isolate a defective card Page 28 System 88 Confidence Manual PolyMorphic Systems First pull out the memory cards and examine their DIP address switches Using the table below write down the starting address of each memory card in ascending order Then select the card in whose address section the bad memory is located For instance if the starting addresses are 2000 4000 and 6000 a fault at 4C00 is in the card starting at 4000 Starting Address versus Possible Switch Settings Switches Starting 1 2 3 4 Address Switch Position not used 0000H on on on 2000H off on on 4000H l on off on 6000H off off on 8000H on on off A000H off on of
17. Defective FDC card I em e A E r vm m r A vm A ee A ee a A rm vm em vm SYMPTOM Cassette tapes do not load or dump properly ISOLATION PROCEDURE Page 23 A Check that the recorder s volume and tone controls are set to recommended levels B Check to see that all cables are hooked properly up C Run the printer interface test If the system fails see Printer does not work D Check to see that JMP2 on the cassette card connected from center pad to minus is E On upgrades check to see that the Byte Poly switch is set correctly or correctly eliminated F Check the adjustment of R26 and R27 see cassette card manual G Test the CPU USART H Substitute working tape cables recorder and cassette card into the system one at a time POSSIBLE CAUSES A User error B Bad tape or tape recorder C Hardware failure SYMPTOM Printer does not work ISOLATION A Check cables printer header and printer switches B Use a printer routine that is known to be working C Run the printer interface test If the system fails the problem is probably on the CPU card or serial 1 0 card On upgrades make sure that the K jumper on the CPU card is connected and that the CPU card has all necessary modifications Check jumpers on the serial I O card r
18. IFFAI 33 34 1 35 4 365 E 37 L 38 39 L ap 1400H H to 17EFH 41 42 a3 U 44 U 48 0 46 1 4 Yl 489 1800H cto 18PFMI 1 T SO Sr j 52 53 Y 4 55 Y 55 1C00H l to iPPEH 57 SE 59 0 81 2 6 6a Relative to the starting address of the card add the appropriate number to the card s starting address 3 4 DOUBLE DENSITY CONROLLER CHIP ISOLATION The Double Density Controllers perform self diagnosis when the system is booted As a part of this procedure error messages may be sent to the screen during the booting of the system These error messages are explained in the following two Sections 3 4 1 88 MS Double Density Controller Chip Isolation The following table lists the possible 88 MS Double Density Conroller error messages and notes what problem they indicate When appropriate the bad IC and bit numbers are provided Page 30 System 88 Confidence Manual PolyMorphic Systems Memory Error to Integrated Circuit Table Message Problem Bit No IC No Error 0380 Bad Disk Controller ROM 1033 Error 0381 Self Test Failure In SDLC 1C43 Error 0382 Memory Error Bit 0 1C22 Error 0383 Memory Error MS controller Bit 1 1C23 Error 0384 Memory Error MS controller Bit 2 IC24 Error 0385 Memory Error MS controller Bit 3 IC25 Error 0385 Memory Error MS controller Bit 4 IC26 Error 0387 Memory Error MS controller Bit 5 IC27 Error 0388 Memory Err
19. System 88 Confidence Manual PolyMorphic Systems 460 Ward Drive Santa Barbara Califomia 9344 805 967 2351 This is Version V of the Confidence Manual and is meant to accompany Version V of the Confidence Package See page 3 for Confidence Package part numbers The software described in this manual was created by L G Danczyk F E Weiss and Frank Anderson The manual was written by L G Danczyk edited by Dr Gerald A Bradley and revised by Jennifer Douglas This manual is part number 810167 Copyright 1979 Interactive Products Corporation All rights reserved SYSTEM 88 CONFIDENCE MANUAL Table of Contents Page Section 1 INTRODUCTION E gt EI L gt E L gt Ei Ki LJ Ei L 1 CONFIDENCE PACKAGES PART NUMBERS 4 s e 3 Section 2 CONFIDENCE TESTING D D D D D D 1 INTRODUCTION TO CONFIDENCE TESTING 2 PREVENTIVE MAINTENANCE a RE eg E 2 2 1 Running the Tests Which Test How often Sha WEY ar uq eP K R aa as N A 2 1 1 Confidente Test Aw ie n e 2 Extensive Memory Test 3 Printer Interface Test 4 E 2s 2 Video Interface Test ERAI 4 beue ud Ce T fiv aps va yta X Confidence Test 6 e 6s A A Extensive Memory Test 10 Printer Interface Test ll Video Interface Test lt ll YNN NANU mu un 2 4 ENVIRON 24 5 POWER KL k KL
20. Test V 3 0 Passes completed 9119 Total Errors 9177 Error Baud Rate 50 75 119 134 5 150 300 600 980 1200 1800 2400 3600 4800 7200 9600 2 3 4 Video Interface Test Verify the correct character set and graphic characters by visual inspection after selecting this test If the graphics characters are displaying correctly the upper part of the display will look like this white is lighted NM EC e ees na eT pie n Page 12 System 88 Confidence Manual PolyMorphic Systems If the symbol character set is being displayed correctly the 3 lower part of the display will look like this Se nalk AuvEomporv xVw2V erzz I ESS amp 0123456789 lt gt 25 RCDEFGHIIKLMNOPQRSTOVWXYZ N _ abcdefghijklmnopqrstuvwxyz l Selecting Error Printout with this test will print out the title of the test and the last 96 characters Selecting Error Summary Printout will print out only the 96 characters Typing any character during this test will cause the test to repeat 2 4 Environment The system should not be subjected to dust corrosive gases or airborne corrosive or conductive particles Keep the system within the following ranges of temperature etc at all times Operating Shipping Storage Ambient Temperature 40 to 115 F 40 to 144 F 8 to 117 F 4 to 46 C 40 to 62 C 22 to 47 pP Relative Humidity 28 to 86 L to 95 1 to 95 Maximum Wet Bulb 78 F No Condensation 25 C 2 5 Power Power s
21. acters appear on screen when only one key is pressed 13 Characters appear on screen when no key is pressed 14 Greek characters or other unexplainable characters appear as part of a file name when the d rectory is listed 15 The system displays the start up messages and prompt Si but does not respond to the keyboard 16 A program does not execute properly and typing keys including CTRL Y and CTRL Z does not change the display 17 Error messages appear when the system is turned on 18 Two or more drive lights turn on simultaneously 19 Cassette tapes do not load or dump properly 20 Printer does not work vm M rr i 9 vm ae re E vm rm E a ee vm 9 c vm rem zm zm l SYMPTOM Drive 3 turns on momentarily when the system is powered up or the LOAD button is pressed REASON This is not a problem it happens on all 8813 3 drive systems The power on sequence causes drive 3 to be selected until the software selects drive 1 T e r em vm Page 16 System 88 Confidence Manual PolyMorphic Systems a SYMPTOM Blank screen REASON No video signal at video monitor monitor not
22. all memory blocks addressed greater than 3400H Because of the way it executes in an extreme case this test could stop executing and cause the system to re load in turn causing the test to start over 4 2 EXTENSIVE MEMORY TEST In addition to the three memory tests above this test performs a galloping pattern test The galloping pattern test zeros out a 4K memory block and then stores one different bit in each memory chip within the memory block It then checks every address of the memory chip to see if there were any changes The test then complements the pattern and does it again The test does this to every location of the memory block and to every memory block except video card memory of the system 4 3 PRINTER INTERFACE TEST The printer interface card must be configured for RS 232 in order for you to test it If the test reveals a problem and if you have the technical ability make sure that the header on the printer interface card has these pins connnected to each other 1 to 15 2 to 16 This test sends data through a loop by way of a test plug inserted in the printer port on the back of the System 88 The test does this in asynchronous mode at baud rates from 50 to 9600 baud 4 4 VTI TEST This test displays all graphics characters twice and all ASCII characters on the screen PolyMorphic Systems System 88 Confidence Manual Page 37 The Sequence of Tests for the Video Interface Test Display heading
23. are simply imbedded lower in the 10X15 matrix PROBABLE CAUSE Defective VTI card e rm a i o e a SYMPTOM Incorrect characters appear when the keyboard is used REASON Incorrect characters reach the final sections of the VTI card POSSIBLE CAUSES A Defective keyboard most probable B Defective keyboard cable C See also Wrong character s appear at certain screen position s Multiple characters appear on screen when only one key is pressed or Improper dot patterns re m r M E rr mm rm e mm M o vm vm r o E E t e mm e e a SYMPTOM Multiple characters appear on screen when only one key is pressed REASON VTI sees multiple keyboard strobes POSSIBLE CAUSES A Holding down key too long All PolyMorphic Systems keyboards except Keyboard I have an auto repeat feature Page 20 System 88 Confidence Manual PolyMorphic Systems B Defective keyboard C Electrical noise on keyboard cable the ususal symptom for this is Characters appear on screen when no key is pressed em vm m m mr m vm v r m vm vm mm r mm cc c o CA A mm mm A A I vr l 2 SYMPTOM Characters appear o
24. ause there is no Motor Speed Test for drives 4 through 7 Even if the system being tested is a 7 drive system these spaces will be blank The word none will appear in all other spaces which fall in the colums of drives that you don t have Sample Confidence Test display for a system in good condition System 88 Confidence Test V 5 0 Elapsed Time 00 00 02 43 CPU Test good Passes Completed 0004 Memory Test Cumulative Errors 0000 Hex memory address blocks CP 20 30 40 50 60 70 80 90 AU BH CH DO EB FB k de k k e ee e k k e fg k k A AAC UT LOW 2 H D D D 9 9 9 9 9 9 9 9 9 9 9 K wo 9 9 9 9 o9 oW gt 9 9 o 9 K X lt D H e K gt 9 9 9 9 9 9 49 B O9 0 9 9 9 9 6 9 9 W K Disk Test 1 2 3 4 5 6 7 Motor Test good good good bad bad bad bad Write Protect Test good good good Read Results good good good none none none none CTRL S displays the confidence tests CTRL Y returns to Exec Disk Drive number 01 Cumulative errors Soft 0000 Hard 00900 Disk Drive number 02 Cumulative errors Soft 5900 Hard 0000 Disk Drive number 03 Cumulative errors Soft 0000 Hard 0000 Unique Address Test Pattern Test Refresh Test L e
25. ce that the hardware is working Since it is impossible to test every possible sequence of system operation this area cannot be absolutely eliminated Situations in which operator error is most likely include Being unfamiliar with the operating system software Illogical not well thought out and or unattentive user operations Incorrect assumptions Situations in which problems with user software are most likely include New or changed software that has never run before Situations in which problems with operating software are most likely include Page 14 System 88 Confidence Manual PolyMorphic Systems A system command instruction or proper sequence of instructions that does not work according to the user s manual on all System 88s If the same problem occurs on an identically configured System 88 this area can be highly suspected Situations in which problems with hardware are most likely include A system command instruction or proper sequence of instructions that does not work according to the user s manual only on the one suspected System 88 One aid in narrowing down a problem is running a suspected program on another System 38 of the same configuration 3 2 CARD ISOLATION The tests provided on the System 38 Confidence Disk were designed to provide as much card isolation testing as possible without using test equipment or having the cover off the main unit with the power on This discussion is intended
26. d the two lines of colons and dots The sample display above indicates that there is 56K of RAM in the system in addition to the 1 2 K of RAM on the CPU card Sample Confidence Test display for a 3 drive system in poor condition System 88 Confidence Test V 5 0 Elapsed Time 00 00 02 43 CPU Test RTC Passes Completed 0004 Memory Test Cumulative Errors 0017 Hex memory address blocks CP 20 30 40 50 60 70 80 90 AO BO CO DO EO FO KR HK KK RR KER AA e ee e e dee RARA dee o ede e ok ee fee e ede dee I A q ART CIEN dt G 3 Seu ER VE d T AE Tea A x Low irritar rro dar taria ir Pra t 4 S t Disk Test 1 2 3 4 5 6 it Motor Test bad bad bad bad bad bad bad bad Write Protect Test bad bad Read Results bad bad bad none none none none CTRL S displays the confidence tests CTRL Y returns to Exec Disk Drive number 01 Cumulative errors Soft 0390 Hard 0001 Disk Drive number 02 Cumulative errors Soft 001E Hard 0001 Disk Drive number 03 Cumulative errors Soft 0192 Hard 0000 Unique Address Test Pattern Test Refresh Test Below are the less obvious things that can be said about the above display l Seventeen memory words at up to 17 addresses were found to be incorrect by the two memory tests Since each location is tested more than once more than one error can be reported from each address 2 The 1K address blocks that tested incorrect are those that start at 4400H 6000H and ACOOH Page 10 S
27. display to the correct display included in this manual 2 3 HOW TO RUN THE TESTS The Confidence Test runs automatically as soon as you insert the confidence disk into the System Drive and press the Load button To run the other tests type CTRL S and select a test from the list of tests displayed CTRL S works only when interrupts are enabled some parts of some tests disable the interrupts so as to run without interruption You can return from any test and select any other test by typing CTRL S Assuming interrupts are enabled you can also use CTRL S to stop any test and select another 2 3 1 Confidence Test Simply inserting the confidence disk in the System Drive and pressing Load will run the Confidence Test The test requires a confidence disk in every disk drive with the write protect tab on each disk to test every disk drive properly If a drive contains no disk or if its door is left open you may get a spurious error report t Selecting error printout with this test will print the errors of the Disk Read test and possible loading problems encountered when reloading the INITIAL file Selecting error summary printout with this test will print the summary display on every pass of the test Page 8 System 88 Confidence Manual PolyMorphic Systems NOTE The following is a Confidence Test display for Jj a 3 drive system in good condition The spaces for drives 4 through 7 are blank in the Motor Speed Test line This is bec
28. e areas is represented by four stars under 20 30 40 etc You need to know if the error is in the first second third or fourth PolyMorphic Systems System 88 Confidence Manual Page 27 area from the starting address These areas correspond to rows 2 3 1 and 4 respectively of the following table of memory chip number and placement on the board 3 Find the bit number s of the problem This can be obtained from the Memory Data Error to Bit Number Table in section 3 3 4 4 Find the memory chip The IC numbers in the table below correspond to the typical placement of the chips on the card when looked at from the front of the card with the edge connector down 16K Memory Card IC Number and Placement Table r i r vm r X E E i X vm o o a vm M e i M e i o em em i i ee Address Memory Data Bit Range 2 0 lL 2 RS 6 7 b TEA 4 2000H ra 2P8PEHRH 42 K 43 E ae L A58 1 36 E Ai Fr 49 49 0000H Ed HRESESIL 34 1 39 T 38 bL 37 38 J 239 L 490 41 1000H Se Seed 26 S LU 28 L A97 10 38 DP at 0 32 34 3000H Ee REER 28 k 3X9 4 209 A 22 22 Td 23 H 2 25 Relative to the starting address of the board add appropriate number to the card s starting address 3
29. e good bad determinations are made by comparing various test results to pre defined levels of expected minimum performance It is good practice to run this test for an hour every week on a system If this is done for instance the Disk Read part of the test can keep you informed about any change in the condition of the disk drives This is important in maintaining a library of readable disks since a disk drive that is slowly going out of alignment will often be able to read a disk that it wrote yesterday but not a disk it wrote last month The test presents memory errors as a number rather than specifying a particular item as good or bad Any number other than 0000 indicates a problem This test isolates memory card Problems to a 1K memory block 1024 consecutive addresses If a memory error occurs and you want to replace the defective memory chip yourself refer to the repair section to isolate the problem to a particular chip Use CTRL S hold down the CTRL key and hit the s key to display a list of the tests and to make a selection The System 88 printer driver is used with the tests You can get a printout telling how many errors a test has found so far or one that provides a brief summary of errors this may be selected after the display of the System 88 tests The printer driver currently defaults to null no output and Should be changed to default to your printer Several other printer devices are prerecorded on the confidence
30. f C000H on off off E000H off off off 2 Find the address of the memory problem relative to where all memory on that card is addressed This relative address will isolate the problem to one of eight areas on the memory board In the Confidence Test summary display of incorrect memory data each of these areas is represented by one mark under 20 30 40 etc You must know what area from the starting address first second third eighth the error is in These areas correspond to rows 1 through 8 respectively of the following table of the memory chip number and placement on the board 3 Find the bit number s of the problem This can be obtained from the Memory Data Error to Bit Number Table in the Appendix at the end of this section 4 Find the memory chip The table below corresponds directly to the placement of the chips on the card when looked at from the front of the card with the edge connector down ilyMorphic Systems System 88 Confidence Manual Page 29 O 8K Memory Card IC Number and Placement Table Address Memory Data Bit Range 0 lied 2 3 4 a B er i 0000H to O3FFH i p d GAS f A L 3 6 Y h Y 0400H l to 07FFH ELLA MAA AZ J sao uU TE 0800H to ORPPA 17 A Jh 1 J 29 1 21 2 A 23 Y 24 0C00H t OFEN 25 28 H 24 H SE 4 2 N 20 of 31 1 32 1000H ag l l to I
31. failure modes of this circuitry merit the above Lastly a single step instruction is simulated to test the single step logic All of the above except the real time clock test must work every time for a good indication of the CPU Card Test to be displayed Improper operation of the real time clock gets displayed directly on the summary error screen since the problem could be some place other than the CPU card If the real time clock tested incorrect bad RTC is displayed next to CPU Test 4 1 2 Disk Read Test The Disk Read Test does three tests every pass of the Confidence Test on each drive of a System 88 A motor speed test is done and checked for a variance of no more than 5 The status of the write protect switch is read in and reported good if it is write protected The test then reads the last 100 sectors of each disk of the system and keeps a cumulative total expressed as a hexadecimal number of the soft and hard errors for each drive This information is scrolled and displayed on the bottom four lines of the screen A bad indication will be displayed in the Read Results area of the summary display if 100 total soft errors or one hard error is read on a disk during a pass of the test This test will try to read a disk three times three cycles of the Confidence Test before giving up due to a No disk or door open error 4 1 3 Memory Tests The memory test portion of the Confidence Test is actually three separate tes
32. he address blocks in the summary display A star is displayed for every 1K block seen addressed greater than 2000H Necessary for any display is proper addressing of the Video Terminal Interface Card CI Checksum Initial file Confidence Tesc ood selected Checksum CPU Card ROMs RAM Test good Memory Map Routine CPU Card RAM Test bad bad Dt The Sequence of Tests for the Confidence Test System Memory Test CPU Card Test 1 Checksum ROMs 2 Real Time Clock 3 Single Step Disk Drives Test l Motor Speed Test 2 Write Protect Test 3 Disk Read Test High RAM Test 1 Unique Address Test 2 Pattern Test 3 Refresh Test Increment passes completed count update display Cie Display other tests Load selected test Run selected test yes Load in Initial file PE ebea TenueW eoueprjuoo SA ET MT88 sua3sAS orudaowAT od PolyMorphic Systems System 88 Confidence Manual Page 35 4 1 1 CPU Card Test The CPU card must pass four tests before a good indication will be displayed on the summary display The three ROMS are 16 bit checksummed individually and identified directly if incorrect The four memory chips are tested and identified in the memory error summary display see Repair section CPU Card The Real Time Clock is tested for an accuracy of 184 3 milliseconds This includes allowance for 50 Hertz operation The
33. idence Packages 000538 System 88 Confidence Package 2 drive 5 Double Density 2 Confidence Disks 820163 1 Test Connector Printer Interface 004533 1 System 88 Confidence Manual 810167 00537 System 88 Confidence Package 3 drive 5 Double Density 3 Confidence Disks 820163 1 Test Connector Printer Interface 004533 1 System 88 Confidence Manual 810167 000528 System 88 Confidence Package 2 drive 5 Single Density 2 Confidence Disks 820113 1 Test Connector Printer Interface 004533 1 System 88 Confidence Manual 810167 000511 System 88 Confidence Package 3 drive 5 Single Density 3 Confidence Disks 820113 1 Test Connector Printer Interface 004533 1 System 88 Confidence Manual 810167 000548 System 88 Confidence Package 2 drive 8 Single Sided 2 Confidence Disks 820171 1 Test Connector Printer Interface 004533 1 System 88 Confidence Manual 810167 000549 System 88 Confidence Package 4 drive 8 Single Sided 4 Confidence Disks 820171 1 Test Connector Printer Interface 004533 1 System 88 Confidence Manual 810167 Confidence testing is done with the cover of the main unit left on and should be performed regularly even when the system has not been malfunctioning In using these test procedures you will find that the displays on the video screen are quite straightforward needing only a little interpretation at times Tables provided in this manual enable you to interpret the screen displays
34. ion sign or approximately equal sign wavy equal sign when printed on the screen REASON Control character s have been entered as part of PolyMorphic Systems System 38 Confidence Manual Page 21 O name POSSIBLE CAUSES A You have typed a control character without noticing It did not print on the screen when entered B Electrical noise generated a control character when the file name was being entered See Characters appear on screen when no key is pressed 15 SYMPTOM The system displays the start up messages and prompt S but does not respond to keyboard REASON Keyboard information does not reach CPU card or Exec is ignoring the characters sent POSSIBLE CAUSES A Keyboard not plugged into computer or plugged into wrong socket B Keyboard interface sometimes called parallel card cable is not plugged into VTI card C Defective keyboard D Defective VTI card E Defective System Disk F Defective memory card G Defective CPU card or CPU memory RAM ROM or EPROM 16 SYMPTOM A program does not execute properly and typing keys including CTRL Y and CTRL Z does not change the display REASON Program is probably caught in a loop with the interrrupts disabled POSSIBLE CAUSES A Software problem Page 22 System 88 Confidence Manual PolyMorphic Systems 17 B See also the POSSIBLE CAUSES for The system displays the start up messages and prompt but does not respond
35. m a s i Me c a Ha UG e mm M e 1 r e o iH i i a rm L o l l 9 SYMPTOM Wrong character s appear at certain screen position s This does not include characters that the VTI is not supposed to be able to produce see improper dot patterns REASON VTI is producing bad character s ISOLATION PROCEDURE Use the software front panel mode or a program to read the bad character byte If the video memory has the correct contents see POSSIBLE CAUSES A amp B If not it could be any of the POSSIBLE CAUSES If a different hex value is displayed for the same memory location each time you update the front panel display by typing U see possible cause F POSSIBLE CAUSES A Defective VTI memory B Defective VTI card C Software problem D Defective backplane E Defective CPU card unlikely PolyMorphic Systems System 88 Confidence Manual Page 19 F If the System 88 is an upgrade from a POLY 88 it may have a memory timing problem which can be eliminated with the VTI modification called for in the upgrade manual 10 SYMPTOM Improper dot patterns Includes any character position that has missing or extra dots Some early character generator ROMs do not drop the tails of lower case letters RELEVANT DATA Each character position is a 10X15 dot matrix ASCII characters are 7X9 imbedded within the 10X15 character position Characters with extended tails
36. n screen when no key is pressed REASON VTI card sees a strobe not produced by typing or generates an invalid interrupt ISOLATION PROCEDURE This is almost always caused by electrical noise on the keyboard strobe line The keyboard cable acts like an antenna and an invalid strobe pulse can be generated by electrical noise If this problem occurs often enough you can unplug the keyboard cable and ground the keyboard strobe input pin 9 of the 25 pin keyboard socket If spurious characters are still generated the problem is in the computer If they are not the problem is in the keyboard or cable POSSIBLE CAUSES A Electrical noise Try installing a commercial line filter between the wall outlet and the power cord B Defective keyboard C Defective VTI card vm zm M a mm rm e M M I E r rm M 9 M M r a a SYMPTOM Greek character s or other unexplainable character s appear as part of a file name when the directory is listed RELEVANT DATA Normally control characters do not print on the screen when typed from the keyboard An exception is when the system is in the text edit mode If the control characters do not perform a control function they will be accepted and used but not displayed control character appears as a Greek character square root sign up left and right arrows divis
37. or MS controller Bit 6 IC28 Error 0389 Memory Error MS controller Bit 7 1C29 Error 038A Data Loop Failure on MS Controller The Bit indicated by a memory error message is the first bad bita There is a possibility that other greater bit numbers are also bad Single Density systems do not generate the above messages Therefore there occurance on a Single Density System with an attached 88 MS definitely indicates a problem on the 88 MS controller board However if you have a Double Density 8813 with an 88 MS add on then you have two controller boards which perform boot time self diagnosis that can result in some of the same error messages This means that you will not know which board has the problem If this occurs your dealer will be able to determine which board is responsible for the error message If it is determined that the faulty board is not the 38 MS controller but the 8813 controller board then the following section can be consulted for chip isolation instructions 3 4 2 Double Density 5 Chip Isolation Error message 0382 indicates a bad memory chip on the 5 Double Density Controller board When this message occurs type a Control Z to see front panel Location 1C06H contains the bad byte type L1C06 and the right arrow will point at the bad byte Use the following table to determine the bit which corresponds to the characters provided for the bad byte For instance if the right arrow points at byte 8A you would de
38. pecifications may be obtained from the System 88 User s Manual Although the system contains an EMI filter electro magnetic interference filter excessive line noise could still cause errors An isolation transformer may be used at the power line to correct this problem PolyMorphic Systems System 88 Confidence Manual Page 13 Section 3 REPAIR 3 1 Hardware versus Software Problems To begin isolation of a system problem think of the system as consisting of four major areas in any one of which a problem might exist the user the application or user software if any the system operating software and the hardware It may be clear at the outset in which area the problem lies Or you may have to eliminate three of the areas one by one on the basis of sound verification that each of those areas is trouble free Let s consider why each one of them might be eliminated in tracking down a problem 1 User error This area cannot be completely eliminated but it can be minimized by reviewing what the user did and consulting the System 88 User s Manual 2 User software This area can be eliminated if the program has worked in the past with identical System 38 hardware operating system software and user procedures 3 Operating software This area can be eliminated if the program has worke before with the same operating system software 4 Hardware failure Successfully running the System 388 tests can provide a high level of assuran
39. r re rm r r ee r r rem the Page 24 System 88 Confidence Manual PolyMorphic Systems 3 3 MEMORY CHIP ISOLATION This section explains how to isolate a problem to a particular memory chip and make the required repair Use this section when you find memory errors 3 3 1 Common Considerations and Techniques To insure that the indicated chip is actually causing the problem it is a good practice to swap the chip with another identical chip predict the test results by going through the steps below in reverse sequence then running the test again and seeing if in fact the problem swaps to its new location If the same results occur as before chances are the problem is elsewhere than in the chip you selected Since it is easy to put a chip in wrong by rotating it 180 degrees it is important to note the pin 1 indication often a notch in one end of the chip and make sure it goes in exactly as it came out The correct method to remove a chip by hand is to pry out one end a little then the other repeating alternately An incorrect method that will almost always result in bent pins is to try to pull the chip out by holding it with one finger on each end of the chip 3 3 2 CPU Card Memory Chips There are four memory chips located on the CPU card numbered 21 through 24 Please see the CPU card layout in the package of drawings appended to this manual to locate these chips
40. se these tables as opposed to having the test tell you directly which memory chip is bad because this lets you test memory cards made by various manufacturers 2 2 PREVENTIVE MAINTENANCE Preventive maintenance involves running a series of tests regularly once a week or once a month depending on the test and examining the resulting screen displays so that you always know the current condition of the system Included in the descriptions of the tests below are sample screen displays and explanations If the test does not even get to the point of displaying the expected display one of the following three things may be happening 1 The Confidence Disk itself is bad 2 The system is malfunctioning so badly that it cannot even produce a display 3 The problem is intermittent and so is randomly interfering with the execution of the test 2 2 1 Running the Tests Which Test How Often and Why 2 2 1 1 Confidence Test The Confidence Test provides a quick way to assess the system s Page 6 System 88 Confidence Manual PolyMorphic Systems condition Except for memory errors which it totals the screen display indicates whether the important component areas of the system are good or bad If a cycle of the test finds a particular area bad that discovery is remembered if another part of the test or another cycle of the same part of the test finds the same tested area good afterwards the bad indication is retained Thes
41. side the system In order to service the System 88 most dealers keep on hand spare parts that are known to be working When the dealer s service personnel have determined which part in your system is about to start causing problems they can insert the appropriate spare into your system and send the defective part to PolyMorphic Systems We repair it and return it to the dealer He then removes the spare part and replaces the repaired part This reduces to a minimum the time that your System s not running In the case of memory chips the dealer can isolate the malfunction to a particular chip and replace that chip In cases where it is possible to isolate a developing malfunction to a particular part users with sufficient ability can remove that part and bring it to the dealer Some users may even want to replace memory chips themselves and the user confidence package enables them to do so You should now check your confidence package to make sure that you recieved the right one for your Sytem 88 The different confidence packages and their numbers are listed below In addition to noting that your package part number is correct make sure that the Confidence Disks are the right part number Note that if you have a System 88 with an 88 MS add on you need Page 2 System 88 Confidence Manual PolyMorphic Systems two packages one for your 8 drives and one for your 5 drives PolyMorphic Systems System 88 Confidence Manual Page 3 Conf
42. termine that Bits 1 3 and 7 are bad O PolyMorphic Systems System 88 Confidence Manual Page 31 Memory Data Error to Bit Number Table Data Error Hex Digit First Character Last Character 0 none none 1 4 0 2 ET ai Ja 3 Lu 8 5 L Bei 4 l 6 JNE 5 4 6 D 2 6 Dy Hues 2 7 U 45 6 D Be 1 2 8 MEM Lp 3 9 4 7 0 3 A E PA D X 4 B D o ES L De hess E L Se D xe D 14 17 L die Ael E 155 Sa 7 U 3 2 3 F ru Sy ye D Bay Dy 2 3 Once you have determined which bit is bad you can consult the Bad Bit to Integrated Circuit table below Bad Bit to Integrated Circuit mm mm rm The following table shows other error codes which indicate malfunctions of the Double Density 5 controller Page 32 System 88 Confidence Manual PolyMorphic Systems Table of Double Density 5 Controller Errors Message Problem Error 0380 1C33 is bad Error 038A Phase Lock Loop tested bad l Error 030C Controller Self check error 1 Error 0307 Controller does not exist Controller circuitry may be malfunctioning so severly that CPU ROMs can not tell if it exists l Error 0308 Checksum error memory error on controller board Error 030A Controller Error Error 030B Head positioning mechanism on the selected l drive did not get to where it was directed by the controller Controller circuitry to perform this may be at fault J Error 0309
43. to keyboard SYMPTOM Error messages appear when the system is first turned on REASON See the System 88 User s Manual for a description of each error message POSSIBLE CAUSES A Most error messages are the result of an oversight on the part of the operator the solution is apparent when the error type is known B Defective System Disk Note disk contents can be destroyed by magnetism such as is generated by AC line cords or momentary failures of the AC power at the wrong time C A 0302 error can be caused by bad disk head alignment D Disk drive defective or out of adjustment E Defective improperly installed or disconnected drive cable s F Any card in the system can cause an error Order of significance FDC floppy power supply CPU backplane any other bus card that is causing bus problems M e a 9 e mm e M M c r M i M i o m a SYMPTOM Two or more drive lights turn on simultaneously REASON Multiple drives have been selected POSSIBLE CAUSES A Program shunt sometimes called drive select header on the drive PC cards are configured for the same drive See PolyMorphic Systems drawing 104417 MODIFICATION FLOPPY DISK DRIVE B Defective drive control cable C Defective drive PolyMorphic Systems System 88 Confidence Manual D
44. ts The first a Unique Address Test stores the least significant byte of the address of the location into the location It then checks these locations for the correct contents The test is then repeated with the most significant byte of the address The second test is a checkerboard test This test writes a pattern into the odd numbered locations and the complement of the pattern into the even numbered locations This is done with three different pattern lengths which correspond to what it takes to accomplish a checkerboard pattern in a memory card designed with a 1K 4K or 16K memory chip This test is done Page 36 System 88 Confidence Manual PolyMorphic Systems with the data patterns of OOH PER 55H and AAH Memory data errors are bit accumulated within a 1K block by way of a buffer which designates a word for each block This buffer is saved after every pass of Confidence The third test is a refresh test After verifying the storage of a number of instructions in a 1K block the test synchronizes itself with the real time clock and executes those instructions Proper execution of these known instructions constitutes an error free test Failure of this test is indicated by an R being displayed below the corresponding 1K address block Because of the way the display is created the R could conceivably be blotted out by a blank in a subsequent pass of the test or replaced by a hex digit indicating a data error This test is run on
45. when necessary NOTE Make sure you use only confidence disks that were made by PolyMorphic Systems A confidence disk that is actually an image of a factory made disk may give inaccurate test results For instance a disk IMAGEd on a drive that is out of alignment will not reveal the faulty alignment of that drive and may incorrectly indicate that another drive is out of alignment Page 4 System 88 Confidence Manual PolyMorphic Systems PolyMorphic Systems System 88 Confidence Manual Page 5 Section 2 Confidence Testing This section describes the confidence tests and how you use them to make sure your system is in good operating condition The next section Repair offers suggestions on how to use these tests to isolate a given problem to its source whether it be hardware or software In most cases users will want to take their systems to the dealer for further testing and repair don t attempt repairs yourself unless you re sure you can do them NOTE Attempted repair of a system component except for replacement of memory chips in sockets by unauthorized personnel voids the warranty The section called Technical Dissussion of the Tests includes a technical discussion of each test and indicates what problems each test can find Included is a hexadecimal to bit numbers table that will help you use the condensed information provided by the Confidence Test to isolate defective memory chips if you want to replace them yourself We u
46. ystem 88 Confidence Manual PolyMorphic Systems 3 The data bits 0 7 that tested incorrect in the above 1K address blocks are A Bits 4 5 and 6 in 440054 to 47FFH B Bits 1 and 3 in 6000H to 53FFH C Bit 6 in ACOOH to AFFFH This information is obtained with help from the Memory Data Error to Bit Number Table at the end of the next section 4 Disk Drive 2 Read Results is displayed bad because one hard error was read in the first pass of the Confidence Test 5 Disk Drive 3 Read Results is displayed bad because more than 100 soft errors were read in the first pass of the Confidence Test The actual number of errors found is 192H 302 decimal 6 The RTC real time clock on the CPU Card tested bad This indication is shown for display purpose only if the RTC were bad the memory tests would not have been completed For more information see Section 4 2 3 2 Extensive Memory Test This test requires the confidence disk in the System Drive usually drive 1 Sample Extensive Memory Test Display 88 Extensive Memory Test v4 I Elapsed 00h00m00 Test 20 30 40 50 60 70 80 90 AO BO CO DO EO FO H H H B D D H H H ZS ges E E E E E ees eeeseeesgegeseegeeegseeezeegeseg REAREAKARRA LARA cte e de n gd RA D D D H D o9 9 9 9 K 9 9 9 9 X K 9954 gt WV D D E E E E E E
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