01W Panel Controls & Connectors

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rev:02Apr12
Topics
Front Panel Back Panel
Joystick  
Master Volume Slider  
Mode Buttons  
  COMBI 
  EDIT COMBI 
  PROG 
  EDIT PROG 
  SEQ 
  GLOBAL 
  BANK  
  DISK 
Value Slider and Buttons 
  up arrow 
  down arow 
Cursor Position Buttons 
  UP 
  DOWN  
  malfunctioning
Letter Buttons 
  A - H 
The Display (LCD)  
Page Buttons 
  PAGE+ 
  PAGE - 
Numeric Pad 
  0 - 9 
10's Hold/- 
Compare 
Sequencer Buttons 
  REC/WRITE 
  START/STOP 
  RESET 
Floppy Disk Drive (FDD)
Jacks 
   Headphones Output 
   Line Outputs 
   Control Inputs (Pedals) 
MIDI Group 
  IN, OUT, THRU 
Cards, plug-in 
   PROG/SEQ DATA 
   PCM DATA 
Power 

Buttons Don't Work 
 

Note: Some descriptions may appear obvious until you remember some users have impaired vision . I've tried to word descriptions so you can find your way around by touch.

The Top Panel

Joystick

The joystick can move left/right and forward/back. Left/right motion is said to be on the x-axis, while forward/back motion is on the y-axis. Motion to the left is in the minus-x direction. Motion to the right is called plus-x. Motion away from you is called plus-y, and motion towards you is called minus-y.

The joystick can be programmed to control many different things. Usually, x-axis motion controls pitch bend, while y-axis motion controls modulation.

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Master Volume Slider

This slider controls the loudness of music going out the back panel outputs and headphone jack. The service manual shows this to be a dual, 10K slide pot, but the taper (log, linear, etc.) is unknown. This slider is in series with the output signal, the output of the slider going directly to 1/L, 2/R, and the headphone amplifiers.

MASTER VOLUME sends no MIDI data.

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Mode Buttons

Mode Select
COMBI EDIT COMBI
PROG EDIT PROG
SEQ GLOBAL
BANK DISK
 
This is a group of eight buttons laid out in four rows of two. From top to bottom, the buttons in each row are :

Top Row is Combi, then Edit Combi
Almost Top Row is Prog, then Edit Prog
Almost Bottom Row is Seq, then Global
Bottom Row is Bank, then Disk
 
The labels just mentioned are those printed on the panel. COMBI is short for Combination, PROG is short for Program, and SEQ is short for Sequencer.

Pushing any of these buttons except BANK puts you in the mode identified by the name of the button. The display changes, and the meaning of "letter" buttons on the 01ís panel can change depending on the mode you're in.

If you use a computer-based sequencer, you may have noticed that pushing certain 01 front panel buttons can introduce unexpected messages into a recording. Click here to see what SysEx messages go out the MIDI OUT port when you push a MODE button.

BANK
Programs, Combinations, and sequencer Songs are organized in groups, and can be stored internally or externally (in PROG/SEQ DATA cards that plug the back of the 01).

Progs and Combis are stored in groups of 100. Banks A and B are stored internally, Banks C and D are stored in a PROG/SEQ DATA card.

Sequences are stored as Songs. Ten songs can be stored internally in one Bank, another 10 songs can be stored in a PROG/SEQ DATA card. The BANK button switches between internal and external Song storage. Note: Songs stored in a DATA card must be loaded to internal memory before you can edit them.

To see what MIDI messages this button sends, click here.

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Value Slider and Buttons

VALUE

Slider 
|
UP ARROW
DOWN ARROW
 
The Value Slider moves up and down. What it controls depends on what Mode you're in.

To the right of the slider are two buttons, one above the other. The top button is labeled with an arrow pointing up, the lower button is labeled with an arrow pointing down.

The slider and buttons can control the same thing. This is usually the case when editing parameters or values. The buttons will increase or decrease the parameter by one, while the slider rapidly changes the same value up or down. If you are using the buttons to change a value, be careful not to bump the slider because it can radically change that value.

On the other hand, the slider can quickly take you to the maximum or minimum value (or start or end of a list). It takes a certain amount of motion for the 01 to recognize that you are using the slider. That means if you want to quickly get to a minimum value, move the slider up a ways before moving it all the way down. Or, to go the maximum value, first move the slider down a bit, and then slide it all the way up.

By the way, it's usually faster to enter a numeric value using Direct Entry.

The service manual shows this to be a 10K slide pot, but the taper (log, linear, etc.) is unknown.

VALUE slider is MIDI Controller #38 (undefined). It sends 0 - 127, (MIDICTL=176) on the global channel. Pressing  bank, up-arrow, or down-arrow sends PROGRAM CHANGE (192)
 

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Cursor Position Buttons (Up/Down and Letter Buttons)

 
CURSOR
UP
DOWN
  
Letter Buttons
A B C D E F G H
  
A cursor is visual indicator that shows you what parameter you are currently editing. Historically, a cursor was a lit area on a computer screen that winked off and on. The name came from engineers who had to design a circuit to do this.

The display has eight rows, or lines. The top two lines are usually reserved for labels, and the cursor can't go there. That means the cursor can only go on one of six lines at the most. Some screens use fewer than six lines, some as few as two.

There are two buttons, one above the other, located between the Value buttons and the Letter buttons. The top button is labeled "UP". The bottom button is labeled "DOWN". They are used to change what line the cursor is on.

If the cursor starts on the top line, pushing the DOWN button moves it down one line at a time. When it gets to the bottom, it will wrap around and go back to the top line. Likewise, pushing UP enough times will bring you right back where you started.

One possible problem for the visually impaired is that the cursor usually stays on the line where you left it. If you change screens, the cursor can be on a different line, and there is no easy way to tell what line you are on without being able to see the display.

Bug: Cursor Buttons

While in SEQuencer Mode, CURSOR UP and/or DOWN can stop working. You push it, and nothing happens. I don't know why. This is a bug in ROM #62. To get the button working again, just go into another mode (like EDIT PROG). Then you can go back to SEQ mode. (In other words, don't go mashing these buttons harder because you think they're getting old. It's a software glitch.)

Letter Buttons

A B C D E F G H
 
These are 8 buttons in a horizontal line immediately below the display. They are labeled alphabetically from A through H. Each key is lined up under a column on the display. The manual sometimes calls these cursor keys.
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The Display

Also called the LCD (Liquid Crystal Display). Think of the display as a group of cells, or boxes. These cells are arranged as 8 rows and 8 columns. You select a cell by using the UP or DOWN buttons to choose a row (or line), then push a letter button to choose a column.

The number of cells on a line is limited to 8, but cells are often joined together to control a single larger cell. For example, when selecting an effect, the name of the effect spans the 4 left-most cells. That means buttons A, B, C, and D all select the same thing.

All 01/Ws and the 01R/W use the same display.

For more details, including repair of Display problems, click here to go to the 01 Display page.

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Page Buttons

PAGE +
PAGE -
 
These two buttons are between the Letter Buttons and the Numeric Pad. They are one above the other. The top button is labeled PAGE PLUS. The bottom button is labeled PAGE MINUS.

These buttons are used to change display pages when you are in a mode where you can edit things. Pushing PAGE+ takes you to the next higher-numbered page, PAGE- to the next lower. Pushing a numeric button takes you to a page faster, BUT the more you use the numeric pad, the sooner those buttons wear out.

Pages are numbered from 0 to 9. Not all pages are used. Depending on what mode you're in, some page numbers are skipped.

The PAGE buttons do not cause the cursor to wrap-around. That is, if you push PAGE+ more than 9 times, you will still stay on Page 9.

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Numeric Pad

7 8 9
4 5 6
1 2 3
10's HOLD/- 0 COMPARE
 
The numeric pad is laid out much like the numeric pad on a computer or calculator (not like a telephone). There are four rows with three buttons on each row. From top to bottom, left to right, the buttons are:

Top row: 7, 8, 9
Almost Top Row: 4, 5, 6
Almost Bottom Row: 1, 2, 3
Bottom Row: 10ís Hold/-, 0, Compare

The bottom row has two buttons that are not numbers: 10ís Hold/- and Compare. 


10's Hold/-

The 10ís Hold/- button changes function depending on what mode you're in.

Sequencer Mode: Toggles between the track Program screen and the Volume screen. When using Direct Entry to enter a Program number, pushing this button toggles between Bank A and Bank B.

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Compare

The Compare button changes function depending on what mode you're in.

Edit Combi or Edit Prog: COMPARE switches between your latest edits and what is currently stored in memory. If you decide you like your edits, then you can store them in memory where they stay when the power is off.

Sequencer Mode: COMPARE undoes the most recent edit. For example, if you accidentlly Erase Song (Page 5-7), COMPARE will restore the erased song.

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Sequencer Buttons

SEQ
REC/WRITE
START/STOP
RESET
 
The column of buttons on the far right are labeled as a group called SEQ, for sequencer. From top to bottom, the buttons are labeled:

Top button: REC/WRITE, for record/write
Middle button: Start/Stop
Bottom button: Reset

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Buttons Don't Work

There are two reasons a button won't work: mechanical or a software bug. Details are on the Keys Page. Click here to go there.
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Floppy Disk Drive (FDD)

Although technically not a front panel control, that's where the floppy is mounted. It takes a 3.5" double-density (not high-density) disk. The 01 can write to the disk in different formats, depending on which version of the ROM you have installed.

Click to visit FDD page for more details on the floppy disk drive.

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The Back Panel

The back panel has three sections: quarter-inch jacks, MIDI connectors, and power. We'll work from left to right from the perspective of a player sitting at the keyboard, feeling around the back (usually while wondering what's wrong). That means we cover the jacks first.
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Jacks

Audio Outputs Control Inputs
PHONES 1/L 2/R 3 4 PEDAL 1 PEDAL 2 DAMPER
 
There are 8 jacks that accept quarter-inch plugs. Some plugs are stereo, some mono, a few don't care.

[Maintenance Info: Jacks that have been used a lot can develop noisy or dead outputs. One possible reason is the solder that holds the jacks to the PC board gets stressed and cracks. A crack can be almost invisible. Users report it is relatively simple to open your 01 and resolder these connections using a soldering iron and more solder. The jacks are close together so you must be careful not to let the solder flow too far and short something out. That is, this is not a good project to learn how to solder. Find someone with a little experience.]

I'll describe these jacks from a tactile perspective - what you feel with your hand as you sit playing your 01. This can save you from getting up and walking around to try and read the back panel.

The jacks are grouped relative to three screws. From left to right (as you sit at the keyboard) is a jack, a screw, 4 jacks, a screw, 3 jacks, then a screw. From left to right, the solo jack is the headphone output, the group of four jacks are outputs 1, 2, 3, and 4, and the right-most group of three jacks are pedal inputs.



Audio Outputs
The audio outputs (PHONES, 1, 2, 3, 4) are described on a separate page.
Click here to go to the Audio Outputs page.
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Control Inputs (Pedal Group)

Control Inputs
ASS. PEDAL/SW 1 ASS. PEDAL/SW 2 DAMPER
 
The pedal group of three inputs are the right-most three jacks, located between two screws.

The left input is for Assignable Pedal or Switch 1.
The middle input is for Assignable Pedal or Switch 2.
The right input is for the damper, or sustain, pedal. (glossary entry)

The functions of these pedals are assigned in Global Mode on Page 4.

Details on pedal operations appear on pages 127-129 in the Percussion Manual, including details of the EXP-2 pedal (with circuit diagram), Pedal MIDI messages, and assignable Pedal functions.

You typically plug pedals into these jacks, but you don't have to use pedals. In most cases, the pedal is just a switch (like a doorbell) that you push with your foot. Any "momentary contact" (again, like a doorbell, not a light switch) switch will work.

Pedal 1 and pedal 2 will also work with potentiometers ("pots", or volume controls). These are a bit trickier than switches because pots come in different values (so many "ohms").

The assignable jack puts 5 volts on the tip of the plug. The 01 expects to seea variable resistance (from 0 to 100K) from tip to ground/shield. This will change the tip voltage from 5 to 0 volts. You do not want to put any volts of your own into the 01 jacks.

Controlling your 01 using something other than foot pedals opens possibilities for creative stage performances, or for musicians who have trouble using foot controls.
 

EXP-2 Foot Pedal Details
The EXP-2 is a foot pedal sold by Korg with a list price of $85 that came with an orange 1/4" stereo cord. Korg called it a "foot controller", but it was not a controller in the digital or MIDI sense of the word. It is a continuous pedal (not a switch) that rotates a pot. It has three quarter-inch jacks plus a small slide pot. 

Internally, there are two separate circuits controlled by the same mechanical pedal. This makes EXP-2 unusual in that it can function as two different types of pedals: 

01 Control: The EXP-2 can control the 01 by connecting the jack with a white ring to one jack of the ASS. PEDAL jacks. The 01 outputs a voltage which the EXP-2 varies and sends back to the 01. You can select what this voltage will change on Global Mode Page 4

Audio Control: Two jacks (without a white ring) are for audio volume control. With these, the EXP-2 can be a volume pedal (like for a guitar). 

Technically, you can use both functions at the same time. However, I can't imagine when you'd want to do so. What you can do is have both your guitar and 01 plugged in at the same time, then use one or the other individually without having to change cables. You COULD use the volume pedal function while the 01 is playing a sequence IF you disable the Assignable Pedal during that sequence. 

EXP-2 Specifications 
Dimensions: 87mm wide, height 58.5 - 91.5mm (depending on pedal position). 
Weight: 460 grams. 
Pedal Angle: 3 - 19 degrees. 
Accessories: One orange 1/4" male-male stereo connection cord for use with 01 Expression control. 
Volume Pedal section: Use Input 1 and Output 1 jacks. Slider sets minimum volume from 0 - 50%. 
Expression Pedal section: Use Output 2 jack (jack with white plastic washer around it) and stereo connection cord. 

A schematic/block diagram of the circuit is in the Percussion Manual on page 129.

 
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MIDI Group

MIDI
IN OUT THRU (Merge)
 
The MIDI group is three 5-pin DIN connectors in the middle of the back panel. As felt from the front of the keyboard while you sit:

The left connector is MIDI IN. MIDI messages from your computer (for example) enter here.

The middle connector is MIDI OUT. Only MIDI messages from the 01 are output.

The right connector is MIDI THRU. This is actually a MIDI "Merge". MIDI IN messages are combined with messages generated by the 01 and sent out this connector.

Click here for basics on how to connect MIDI stuff.
Click here for information about MIDI control.

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Cards

There are two connectors that accept electronic cards. Cards should not be inserted or removed unless the 01's power is turned off.

PROG/SEQ DATA

The left is labeled PROG/SEQ DATA. It is for program and sequencer data that is stored in a Korg "SRC-512" Memory Card RAM (512K bits) that plugs in this slot. Card operations are done in Global Mode, Pages 5 and 6. Click here to learn about card operations and to see additional information.

PCM DATA

The right is labeled PCM DATA. It is for cards that store new Multisounds and/or Drum Sounds. A new Sound is used by assigning it to an Oscillator in Edit Program Mode, Page 0, Line 3 and/or 4. Click here for technical details on the PCM card and connector circuits.
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Power

Finally at the far right is the power cord connector and the on/off switch. The 01 takes AC power directly from the wall socket. The 01 does NOT use a "wall wart" (transformer cube that plugs in the wall outlet with a dangling wire). For more details on 01 power topics, click here.

This completes the tour of the back panel.

End of document. 


Copyright ©1998-2002 by Ken Westover at Cliff Canyon Publishing Co. All rights reserved.
This material may not be distributed without the written permission of the author.
E-mail questions or comments to cliffcan@indra.com.
 
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