00000000: 46 72 6F 6D 3A 20 77 6D 61 79 73 40 6D 6F 74 6F |From: wmays@moto|
00000010: 77 6E 2E 67 65 2E 63 6F 6D 20 28 57 69 6C 6C 69 |wn.ge.com (Willi|
00000020: 61 6D 20 4C 2E 20 4D 61 79 73 2C 20 58 33 34 34 |am L. Mays, X344|
00000030: 38 29 0A 4E 65 77 73 67 72 6F 75 70 73 3A 20 63 |8).Newsgroups: c|
00000040: 6F 6D 70 2E 73 79 73 2E 63 62 6D 0A 53 75 62 6A |omp.sys.cbm.Subj|
00000050: 65 63 74 3A 20 52 65 3A 20 52 65 61 6C 69 67 6E |ect: Re: Realign|
00000060: 69 6E 67 20 61 20 31 35 34 31 20 44 69 73 6B 20 |ing a 1541 Disk |
00000070: 44 72 69 76 65 0A 44 61 74 65 3A 20 32 31 20 4F |Drive.Date: 21 O|
00000080: 63 74 20 31 39 39 33 20 31 37 3A 35 32 3A 35 33 |ct 1993 17:52:53|
00000090: 20 47 4D 54 0A 4F 72 67 61 6E 69 7A 61 74 69 6F | GMT.Organizatio|
000000A0: 6E 3A 20 4D 61 72 74 69 6E 20 4D 61 72 69 65 74 |n: Martin Mariet|
000000B0: 74 61 20 43 6F 72 70 2C 20 4D 6F 6F 72 65 73 74 |ta Corp, Moorest|
000000C0: 6F 77 6E 20 4E 4A 0A 44 69 73 74 72 69 62 75 74 |own NJ.Distribut|
000000D0: 69 6F 6E 3A 20 77 6F 72 6C 64 0A 52 65 70 6C 79 |ion: world.Reply|
000000E0: 2D 54 6F 3A 20 77 6D 61 79 73 40 6D 6F 74 6F 77 |-To: wmays@motow|
000000F0: 6E 2E 67 65 2E 63 6F 6D 0A 4E 4E 54 50 2D 50 6F |n.ge.com.NNTP-Po|
00000100: 73 74 69 6E 67 2D 48 6F 73 74 3A 20 65 70 69 30 |sting-Host: epi0|
00000110: 35 37 2E 6D 6F 74 6F 77 6E 2E 67 65 2E 63 6F 6D |57.motown.ge.com|
00000120: 0A 0A 59 65 73 2C 20 79 6F 75 20 63 61 6E 20 61 |..Yes, you can a|
00000130: 6C 69 67 6E 20 79 6F 75 72 73 65 6C 66 2E 0A 59 |lign yourself..Y|
00000140: 65 73 2C 20 74 68 65 72 65 20 69 73 20 73 2F 77 |es, there is s/w|
00000150: 20 74 68 61 74 20 69 6E 64 69 63 61 74 65 73 20 | that indicates |
00000160: 61 6C 69 67 6E 6D 65 6E 74 2E 0A 4E 6F 2C 20 6D |alignment..No, m|
00000170: 6F 73 74 20 64 69 73 6B 20 61 6C 69 67 6E 6D 65 |ost disk alignme|
00000180: 6E 74 20 73 2F 77 20 63 61 6E 20 6E 6F 74 20 62 |nt s/w can not b|
00000190: 65 20 63 6F 70 69 65 64 20 6F 72 20 64 6F 77 6E |e copied or down|
000001A0: 6C 6F 61 64 65 64 3B 0A 46 6F 72 20 74 68 65 20 |loaded;.For the |
000001B0: 62 65 74 74 65 72 20 70 72 6F 67 72 61 6D 73 20 |better programs |
000001C0: 74 68 61 74 20 49 20 75 73 65 2C 20 74 68 65 20 |that I use, the |
000001D0: 64 69 73 6B 20 69 73 20 74 68 65 20 61 6C 69 67 |disk is the alig|
000001E0: 6E 6D 65 6E 74 0A 72 65 66 65 72 65 6E 63 65 20 |nment.reference |
000001F0: 74 6F 6F 6C 2E 20 49 74 20 6D 75 73 74 20 68 61 |tool. It must ha|
00000200: 76 65 20 74 68 65 20 74 72 61 63 6B 73 20 69 6E |ve the tracks in|
00000210: 20 70 72 65 63 69 73 65 6C 79 20 74 68 65 20 72 | precisely the r|
00000220: 69 67 68 74 20 70 6C 61 63 65 73 2E 0A 48 6F 77 |ight places..How|
00000230: 65 76 65 72 3B 20 49 20 66 69 6E 64 20 74 68 61 |ever; I find tha|
00000240: 74 20 69 66 20 67 61 6D 65 73 2C 20 65 74 63 2E |t if games, etc.|
00000250: 20 61 72 65 20 70 72 6F 74 65 63 74 65 64 2C 20 | are protected, |
00000260: 74 68 65 79 20 6D 61 79 20 6E 6F 74 20 6C 6F 61 |they may not loa|
00000270: 64 0A 62 65 63 61 75 73 65 20 6F 66 20 61 20 73 |d.because of a s|
00000280: 70 65 65 64 20 69 6E 61 63 63 75 72 61 63 79 2E |peed inaccuracy.|
00000290: 20 53 70 65 65 64 20 69 73 20 6D 75 63 68 20 65 | Speed is much e|
000002A0: 61 73 69 65 72 20 74 6F 20 61 64 6A 75 73 74 2E |asier to adjust.|
000002B0: 0A 0A 59 6F 75 20 63 61 6E 20 67 6F 20 6D 61 64 |..You can go mad|
000002C0: 20 74 72 79 69 6E 67 20 74 6F 20 73 65 74 20 68 | trying to set h|
000002D0: 65 61 64 20 61 6C 69 67 6E 6D 65 6E 74 20 62 79 |ead alignment by|
000002E0: 20 6C 6F 61 64 69 6E 67 20 61 20 63 6F 6D 6D 65 | loading a comme|
000002F0: 72 63 69 61 6C 0A 70 72 6F 67 72 61 6D 2C 20 62 |rcial.program, b|
00000300: 75 74 20 79 6F 75 20 6D 61 79 20 77 61 6E 74 20 |ut you may want |
00000310: 74 6F 20 74 72 79 2E 0A 48 65 61 64 20 61 6C 69 |to try..Head ali|
00000320: 67 6E 6D 65 6E 74 20 69 73 20 73 68 69 66 74 65 |gnment is shifte|
00000330: 64 20 62 79 20 6C 6F 6F 73 65 6E 69 6E 67 20 74 |d by loosening t|
00000340: 68 65 20 74 77 6F 20 73 63 72 65 77 73 20 6F 6E |he two screws on|
00000350: 20 74 68 65 20 62 6F 74 74 6F 6D 20 74 68 61 74 | the bottom that|
00000360: 0A 68 6F 6C 64 20 74 68 65 20 6D 6F 75 6E 74 69 |.hold the mounti|
00000370: 6E 67 20 65 61 72 73 20 6F 66 20 74 68 65 20 73 |ng ears of the s|
00000380: 74 65 70 20 6D 6F 74 6F 72 2E 20 54 68 65 6E 20 |tep motor. Then |
00000390: 74 68 65 20 6D 6F 74 6F 72 20 69 73 20 74 75 72 |the motor is tur|
000003A0: 6E 65 64 20 61 20 74 69 6E 79 20 0A 64 69 73 74 |ned a tiny .dist|
000003B0: 61 6E 63 65 20 61 6E 64 20 74 69 67 68 74 65 6E |ance and tighten|
000003C0: 65 64 20 64 6F 77 6E 2E 20 54 75 72 6E 69 6E 67 |ed down. Turning|
000003D0: 20 61 6C 6C 20 74 68 65 20 77 61 79 20 65 6E 64 | all the way end|
000003E0: 2D 74 6F 2D 65 6E 64 20 6F 66 20 74 68 65 20 6D |-to-end of the m|
000003F0: 6F 74 6F 72 20 6D 6F 75 6E 74 69 6E 67 0A 73 6C |otor mounting.sl|
00000400: 6F 74 73 20 63 6F 76 65 72 73 20 32 20 2D 20 33 |ots covers 2 - 3|
00000410: 20 74 72 61 63 6B 73 2C 20 79 6F 75 20 77 61 6E | tracks, you wan|
00000420: 74 20 74 6F 20 6D 6F 76 65 20 62 79 20 71 75 61 |t to move by qua|
00000430: 72 74 65 72 73 20 6F 66 20 61 20 74 72 61 63 6B |rters of a track|
00000440: 2C 20 61 74 20 6D 6F 73 74 2E 0A 59 6F 75 20 6E |, at most..You n|
00000450: 65 65 64 20 74 6F 20 6B 6E 6F 77 20 6D 6F 72 65 |eed to know more|
00000460: 20 62 65 66 6F 72 65 20 79 6F 75 20 6D 65 73 73 | before you mess|
00000470: 20 77 69 74 68 20 74 68 65 20 68 65 61 64 20 73 | with the head s|
00000480: 74 6F 70 20 61 64 6A 75 73 74 6D 65 6E 74 2C 20 |top adjustment, |
00000490: 70 72 61 79 20 69 74 20 69 73 20 6F 6B 2E 0A 0A |pray it is ok...|
000004A0: 53 70 65 65 64 20 61 64 6A 75 73 74 6D 65 6E 74 |Speed adjustment|
000004B0: 20 69 73 20 64 6F 6E 65 20 62 79 20 6D 61 6B 69 | is done by maki|
000004C0: 6E 67 20 74 69 6E 79 20 74 77 65 65 6B 73 20 6F |ng tiny tweeks o|
000004D0: 66 20 74 68 65 20 73 70 65 65 64 20 63 6F 6E 74 |f the speed cont|
000004E0: 72 6F 6C 20 70 6F 74 2C 20 0A 61 20 73 75 62 6D |rol pot, .a subm|
000004F0: 69 6E 69 61 74 75 72 65 20 73 71 75 61 72 65 20 |iniature square |
00000500: 70 6C 61 73 74 69 63 20 74 72 69 6D 6D 65 72 20 |plastic trimmer |
00000510: 70 6F 74 2E 20 49 74 20 69 73 20 69 6E 20 64 69 |pot. It is in di|
00000520: 66 66 65 72 65 6E 74 20 70 6C 61 63 65 73 2C 20 |fferent places, |
00000530: 74 6F 70 20 61 6E 64 0A 62 6F 74 74 6F 6D 20 64 |top and.bottom d|
00000540: 65 70 65 6E 64 69 6E 67 20 6F 6E 20 74 68 65 20 |epending on the |
00000550: 6D 6F 64 65 6C 2F 79 65 61 72 20 6F 66 20 74 68 |model/year of th|
00000560: 65 20 64 72 69 76 65 2E 20 49 74 20 69 73 20 6F |e drive. It is o|
00000570: 6E 20 74 68 65 20 61 63 74 75 61 6C 20 44 52 49 |n the actual DRI|
00000580: 56 45 20 0A 66 72 61 6D 65 2C 20 6F 6E 20 61 20 |VE .frame, on a |
00000590: 72 61 74 68 65 72 20 73 6D 61 6C 6C 20 70 63 20 |rather small pc |
000005A0: 62 6F 61 72 64 2C 20 6E 6F 74 20 69 6E 20 74 68 |board, not in th|
000005B0: 65 20 6C 61 72 67 65 20 31 35 34 31 20 63 68 61 |e large 1541 cha|
000005C0: 73 73 69 73 20 6F 72 20 6D 61 69 6E 20 62 6F 61 |ssis or main boa|
000005D0: 72 64 2E 0A 54 68 65 20 64 72 69 76 65 20 66 6C |rd..The drive fl|
000005E0: 79 77 68 65 65 6C 20 75 6E 64 65 72 20 74 68 65 |ywheel under the|
000005F0: 20 66 6C 6F 70 70 79 20 68 75 62 20 4D 41 59 20 | floppy hub MAY |
00000600: 68 61 76 65 20 61 20 72 61 64 69 61 6C 20 70 61 |have a radial pa|
00000610: 74 74 65 72 6E 20 6F 66 20 62 6C 61 63 6B 20 6C |ttern of black l|
00000620: 69 6E 65 73 0A 74 68 61 74 20 63 61 6E 20 62 65 |ines.that can be|
00000630: 20 73 74 72 6F 62 65 64 20 75 6E 64 65 72 20 6E | strobed under n|
00000640: 65 6F 6E 20 6F 72 20 66 6C 75 6F 72 65 73 63 65 |eon or fluoresce|
00000650: 6E 74 20 6C 69 67 68 74 20 74 6F 20 73 65 74 20 |nt light to set |
00000660: 74 68 65 20 73 70 65 65 64 2E 0A 53 2F 77 20 63 |the speed..S/w c|
00000670: 61 6E 20 61 6C 73 6F 20 6D 65 61 73 75 72 65 20 |an also measure |
00000680: 73 70 65 65 64 2C 20 69 74 20 61 6C 6C 20 64 65 |speed, it all de|
00000690: 70 65 6E 64 73 20 6F 6E 20 77 68 61 74 20 79 6F |pends on what yo|
000006A0: 75 20 63 61 6E 20 67 65 74 2E 0A 2D 2D 2D 0A 53 |u can get..---.S|
000006B0: 70 65 61 6B 69 6E 67 20 6F 6E 6C 79 20 66 6F 72 |peaking only for|
000006C0: 20 6D 79 73 65 6C 66 3A 20 20 42 69 6C 6C 20 4D | myself: Bill M|
000006D0: 61 79 73 0A 5C 20 20 2F 0A 20 5C 2F 0A 20 2F 5C |ays.\ /. \/. /\|
000006E0: 0A 2F 20 20 5C 20 20 6D 79 20 6D 61 72 6B 2E 0A |./ \ my mark..|
000006F0: 0A |. |
FROM: WMAYS@MOTOWN.GE.COM (WILLIAM L. MA
YS, X3448).NEWSGROUPS: COMP.SYS.CBM.SUBJ
ECT: RE: REALIGNING A 1541 DISK DRIVE.DA
TE: 21 OCT 1993 17:52:53 GMT.ORGANIZATIO
N: MARTIN MARIETTA CORP, MOORESTOWN NJ.D
ISTRIBUTION: WORLD.REPLY-TO: WMAYS@MOTOW
N.GE.COM.NNTP-POSTING-HOST: EPI057.MOTOW
N.GE.COM..YES, YOU CAN ALIGN YOURSELF..Y
ES, THERE IS S/W THAT INDICATES ALIGNMEN
T..NO, MOST DISK ALIGNMENT S/W CAN NOT B
E COPIED OR DOWNLOADED;.FOR THE BETTER P
ROGRAMS THAT I USE, THE DISK IS THE ALIG
NMENT.REFERENCE TOOL. IT MUST HAVE THE T
RACKS IN PRECISELY THE RIGHT PLACES..HOW
EVER; I FIND THAT IF GAMES, ETC. ARE PRO
TECTED, THEY MAY NOT LOAD.BECAUSE OF A S
PEED INACCURACY. SPEED IS MUCH EASIER TO
ADJUST...YOU CAN GO MAD TRYING TO SET H
EAD ALIGNMENT BY LOADING A COMMERCIAL.PR
OGRAM, BUT YOU MAY WANT TO TRY..HEAD ALI
GNMENT IS SHIFTED BY LOOSENING THE TWO S
CREWS ON THE BOTTOM THAT.HOLD THE MOUNTI
NG EARS OF THE STEP MOTOR. THEN THE MOTO
R IS TURNED A TINY .DISTANCE AND TIGHTEN
ED DOWN. TURNING ALL THE WAY END-TO-END
OF THE MOTOR MOUNTING.SLOTS COVERS 2 - 3
TRACKS, YOU WANT TO MOVE BY QUARTERS OF
A TRACK, AT MOST..YOU NEED TO KNOW MORE
BEFORE YOU MESS WITH THE HEAD STOP ADJU
STMENT, PRAY IT IS OK...SPEED ADJUSTMENT
IS DONE BY MAKING TINY TWEEKS OF THE SP
EED CONTROL POT, .A SUBMINIATURE SQUARE
PLASTIC TRIMMER POT. IT IS IN DIFFERENT
PLACES, TOP AND.BOTTOM DEPENDING ON THE
MODEL/YEAR OF THE DRIVE. IT IS ON THE AC
TUAL DRIVE .FRAME, ON A RATHER SMALL PC
BOARD, NOT IN THE LARGE 1541 CHASSIS OR
MAIN BOARD..THE DRIVE FLYWHEEL UNDER THE
FLOPPY HUB MAY HAVE A RADIAL PATTERN OF
BLACK LINES.THAT CAN BE STROBED UNDER N
EON OR FLUORESCENT LIGHT TO SET THE SPEE
D..S/W CAN ALSO MEASURE SPEED, IT ALL DE
PENDS ON WHAT YOU CAN GET..---.SPEAKING
ONLY FOR MYSELF: BILL MAYS.\ /. \/. /\
./ \ MY MARK...
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