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DD = double-density (720K) DOS = disk operating system FDD = floppy disk drive |
HD = high-density (1.4M) KB = K = kilobytes MB = M = megabytes |
SMF = Std. MIDI File = Standard MIDI File |
In the simplest case, you may have tried to read one type of disk using the wrong screen. If things look worse than that, cleaning the drive heads is a good thing to try, especially if your 01 has been in smokey places.
If you are really unlucky, the drive will have to be replaced. Check the text to see your options.
Other disk drive related pages on this site are:
01/W Disk Mode: About the options available when you press DISK on
the 01 panel).
01/W Disk Topics: Information on many disk-related questions like using
DD or HD floppies.
| Message | Meaning |
|---|---|
| Data Error | This message means the data being read off the disk is bad.
Although it is very unlikely, it is possible that the disk drive has gone bad and the drive itself has damaged the disk. If you insert a disk containing valued work, it could be destroyed. The manual recommends: 1. Re-insert the disk and try the operation again.
Use only new or empty double-sided disks until you know for certain
your disk drive is not damaging disks.
Now, more likely reasons you will get this error include: 1. The disk is DOS formatted for 1.4M (high-density) instead of 720K (double-density) (click here for details), or 2. Bad data was written onto the disk, or 3. Good data on the disk isn't being read properly. This can be caused by: 3a. Dirty heads on your disk drive. If you use your floppy drive a lot, especially in smoky places, try using a floppy disk cleaner. 3b. A dirty or damaged disk. |
| Disk Type Error | 1. The disk is DOS formatted and you're trying to access it as an 01-formatted
disk (by using Page 1 or 2).
2. The disk is not for the 01/W series. |
| Drive Not Ready | There is no disk in the drive, or the disk is not properly or fully inserted. |
| Insufficient Memory | MIDI data files can't be loaded or saved because there isn't enough free sequencer memory. |
| Memory Overflow | While saving a MIDI file, the received data was more than 64K bytes. |
| No File | The specified file isn't on the disk. |
| Protected Disk | The write-protect tab on the disk is in the "protect" position (the hole is open). |
If the disk drive head becomes dirty, data errors may occur. Accumulated dirt can scratch the disk. Regular cleaning is important to avoid dirt buildup.
To clean the disk drive head, use a commercially available fluid-type cleaning disk for dual-sided drives.
Using a single-sided cleaning disk may damage the disk drive.
Cleaning Procedure
(1) Moisten the cleaning disk with cleaning fluid.
(2) Immediately insert the cleaning disk into the disk drive and execute
a load operation. (Any type of load operation is ok.) An error message
will appear.
(3) After approximately 10 seconds, press the eject button, and remove
the cleaning disk.
(4) For approximately 5 minutes, do not use the disk drive. (Using
the disk drive before the cleaning liquid has dried may cause malfunctions.)
- - - - -
That ends the quote from the manual. The same cleaning disk is used
for DD and HD disk drives. Just make sure it's for a 2-sided floppy drive.
A replacement drive by itself cost $183 from a New York Korg dealer (99Dec). This is consistent with the $200 figure that has been reported in the past. Teac was selling the same drive for about $35 (97Feb15).
Dis-Assembling the 01
I've posted step-by-step instructions for taking your 01 apart and
putting it back together in the Sticky Key section. Click
here to go there. While you have your 01 apart, you might as well check
and/or fix any "lazy" keys.
Re-Assembling the 01
As I said above, instructions are elsewhere BUT before putting it back
together, test that the drive works.
If the New Drive Doesn't
Work
1. Check that the ribbon cable going to the disk drive is not upside
down.
2. Make sure all cables are snug and not upside down.
2. Price is $150 + S/H and is available from "Parts Is Parts" (authorized vendor for Korg). For their number, call Korg tech support @ 516.333.8737 Ext.1701. Ask for Ian." [01Apr01eg]
3. The Korg USA website (http://korgusa.com/service/teac.htm) once reported that the TEAC 6500 and FD235HF disk drives were generic replacement drives for the 01/W, T and I series keyboards. There are pins on these drives which must be connected together ("jumpered" is the term. A "jumper" is a wire connecting two points, allowing the signal to "jump" from one point to another.) A diagram was shown, which is reproduced below.
The site further stresses that the "keyboards were designed to be used with Double Density Disks only. High density disks will not always work properly."
User Reports
In theory, you should be able to replace the 01 FDD with
any generic PC-type 720K drive. But reports of successful replacement by users, outside of
an authorized repair shop, have been rare.
I can't keep current with all the sources and their quality - you can feel free to e-mail your experiences to me. I have had little or no personal contact with any of these businesses. What follows is information that has been posted to a couple of Korg lists over the years, or comments sent to me from users who felt strongly enough to write.
I strongly recommend
that you subscribe to the Korg 01 Users Group/list server (which
is not connected with Korg, the company) to post your questions and
experiences. This world-wide list has many smart and helpful members who may have
recent experience with these repairs. (To subscribe, visit http://groups.yahoo.com/group/korg01w-list/.) Ask the
Group about a particular company before ordering. You may also want to contact
the Better Business Bureau where a compnay is located to check their recent
history, positive or negative. Checking with the BBB is a good idea before
doing business with any small company.
Route 66 Studios
www.route66studios.com
Phone: 4:00pm to 9:00pm M-F 1-608-755-1993
e-mail: Route66studios@aol.com
Route 66 Studios sells disk drives, manuals, and batteries for the 01/W and other synths. {08May26}
Telesis
www.telesisgear.com
PO Box 19015 - Anaheim Hills, CA 92817. voice: (714)-998-3001 fax: (714)-998-3121
e-mail: telesis@telesisgear.com
The Telesis web site shows they sell used gear as available. Contact them "to get the full lowdown". {08May26}
Chinon
A user reports his original 01 floppy drive was an Alps Electric DFR
423F02A. It was replaced with a Chinon FZ357, on which was placed two jumpers.
He didn't say which jumpers or where. He did say the setting was "720KB
Mode" and "Drive Select 0". The drive works, but the green LED is always
lit. The Alps Electric drive cost 170 Euro from Korg, He said the Chinon
drive was available from ebay. [2002 Oct 16]
Teac
One reported successful replacement was a TEAC FD235HF-6529 bought
from Ebay.com (sales@jimini.com) for $16. The jumpers were set as shown
in the table below and it worked.
HOWEVER: All HD floppies had to have their hole covered after the drive was installed. This means you must cover the holes in all HD floppies you use in this new drive, even old HD floppies that used to work without having the hole covered. For more details, visit About the HD Hole on this web site. (00May22)
Another user reports installing a Teac FD235HF-4240 that did NOT work. His original drive was an "F4 QPR15 Sankyo 212168 5 Vo, 25 A , 34-pin, 4-pin power, 720 2DD, 3.5". Korg offered to sell him a drive for $150. (99Nov20)
One user said the original 01 floppy drive was a Teac, model FD235HF7529 (98Apr01).
A different user said the original was a Teac 6500 series, but this has since been replaced by the 7500 series.
Sony MPF 520-1
The Sony MPF 520-1 (a 1.44M drive) was reported as being succesfully
placed in an 01. User Roymario reported jumper settings as follows:
"If the drive face you You will notice 3 jumpers to the top right hand corner place jumper only on extreme rigth hand berge. This drive will do all function of a regular drive. The only catch being the front panel LED may never glow although the drive works perfectly." [98Jun09]
The 01 came with a 720K, double-sided floppy disk drive. The internal programming of the 01 expects to see this type of drive, and only this type. If you replace the 720K unit with something else (like a 1.4M drive), the internal programming wouldn't know how to operate the drive.
Some 1.4M drives may have a jumper or switch to set the drive to operate in 720K mode. In this case, the 01 should never know the difference.
One source has reported successfully replacing the original 720K FDD with a 1.44M FDD by Sony, model # MPF 520-1. It probably had a jumper setting that made it look and work like a 720K drive. It is unknown if other 1.4M FDDs will work in the 01W.
Most IBM PCs have a 1.44M drive which uses 1.44M floppies. The 01 can't read floppies formatted for 1.44M, but your IBM can read 720K floppies if they are properly formatted.
NOTE: 1.4M drives identify the floppy by looking for a square hole at one end. If it sees the hole, the drive automatically goes into 1.4M mode, and it won't read a floppy formatted for 720K. In this case, you must cover the hole with opaque tape (or something equivalent). This is important if you were using 1.4M floppies with the original 01 drive. That drive couldn't recognize your 1.4M floppy - it always assumed it was 720K. A replacement drive might know the difference, so you'll have to put tape on all your old 1.4M floppies.
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3 2 1 +-+ +------+ o o |o| |o o| G | | +------+ |o| o o F +-+ +-+ o |o| o E +-+ | | |o| |o| o D | | +-+ |o| o o C +-+ +-+ o o |o| B | | o o |o| A +-+ |
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| NOTICE: This information was submitted via the internet and has not been personally confirmed by me. Use this information at your own risk. Please e-mail me if you find anything missing or wrong. (98Apr20) | |
| Pin | Name | Direction | Description |
|---|---|---|---|
| 2 | unused
REDWC- |
-
to drive |
in original PC
Density Select (in PC-AT?) |
| 4 | unused | - | not connected |
| 6 | unused | - | not connected |
| 8 | INDEX- | from drive | Index (one pulse each rotation) |
| 10 | MOTEA- | to drive | Motor Enable drive-A |
| 12 | DRVSB- | to drive | Drive Select drive-B |
| 14 | DRVSA- | to drive | Drive Select drive-A |
| 16 | MOTEB- | to drive | Motor Enable drive-B |
| 18 | DIR- | to drive | Stepper motor direction (0 = towards spindle) |
| 20 | STEP- | to drive | Step pulse |
| 22 | WDATE- | to drive | Write Data |
| 24 | WGATE- | to drive | Write Enable |
| 26 | TRK00- | from drive | Track 0 (0 = track 0) |
| 28 | WPT- | from drive | Write Protect (0 = protected) |
| 30 | RDATA- | from drive | Read Data (pulse = flux change) |
| 32 | SIDE1- | to drive | Select Head 1(0=top, 1= bottom) |
| 34 | unused
Ready(?) DSKCHG-? |
-
? to drive? |
in original PC (this I know)
Drive Ready? (in PC-XT?) Disk Change (in PC-AT?) |
It looks like the Megafloppy is a hard disk drive that fits in the floppy
slot of your 01. The hard drive is partitioned to look like "hundreds of
floppies". The price is not viewable with my browser but is said to be
expensive.
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