01/W Disassembly
rev: 03May27
It's possible to work on stuff inside the 01 yourself. Typical repairs
are:
1. Replacing the battery
2. Fixing sticky or broken keys
3. Fixing the LCD backlight. To remove the
display from non-ProX models you must remove the CPU card and keyboard.
Those who have done it say it's not that complicated, but it is tedious
and requires time and organization.
For details on those specific repairs, see the appropriate pages (click
on the links above). Depending on what you're trying to get at, you may
have to deal with lots of screws and connectors. This job requires organization
and patience.
I have not yet had to go through this procedure myself, so I can't report
clearly on the detailed steps. What I've done is compiled this procedure
by scanning years of e-mails, and by reading the service manual (which
isn't very clear).
Since I've never done this, THIS PROCEDURE MAY CONTAIN ERRORS! This
procedure is a guide for those strong-hearted enough (or poor enough) to
want to try this themselves. I encourage you to let me know how to improve
these procedures. Click here
to e-mail questions/comments to Ken Westover.
SPECIAL NOTE: Photos Available
There are some excellent photographs of the disassembly process and
the inside of the 01 at Hajo's web site: http://www.hajo.kessener.net/01w/.
It includes a good description of the process from someone who has gone
through the process and includes valuable lessons only experience can teach.
I highly recommend a visit. (the site was up and running on 01Nov11).
Required Tools
All Models: Screwdriver (electric preferred) Philips, size(s) unknown
ProX: A stick of wood to hold open the top panel.
Recommended Supplies
-
Something to hold small parts. Trays, jars, or a cupcake baking tin. Disposable
bathroom cups can be labeled with where the screws came from ("bottom plate",
"main board", etc.).
-
Korg 01/W service manual
-
Permanent pen to mark connectors. It is very important that Pin 1 of a
connector connects to Pin 1 on the PC board. Before removing a connector,
put a black dot on the connector and a black dot on the PC board next to
each other so you can see how to re-plug them. Another technique is to
draw a continuous line across the connector and PC board before they are
unplugged. When they are re-plugged together properly, you will see one
continuous line.
-
Pencil and paper - to make notes and diagrams about where everything goes
for re-assembly.
Tips
1. Go slow. Everything should come out with only a little encouragement.
If anything resists, STOP, and look at what might be holding it. Do not
yank. Do not force. Be Patient!
2. STATIC CAUTION! Static can be
a Korg-Killer! A small dose of static (so small you can't feel it) in the
wrong place can damage electronic parts. It is important to take precautions
against generating and/or discharging static. Precautions include:
-
Don't wear static-generating shoes or clothes. Certain sneakers on certain
carpets generate huge sparks with only a few steps. Try not to work on
carpeting, especially cheap nylon.
-
Always touch some large piece of metal on the chassis before touching anything
inside the 01. Touching metal plates helps drain off damaging static.
-
If you have access to anti-static pads and/or grounding straps, use them.
Dis-assembly
Most of these instructions come from the 01/Wpro and proX service manual.
They are probably more complicated than what you must do with a 61-key
01 (01/W or 01/Wfd). For example, the number of screws used in the different
01s may vary, and there is no disk drive in a non-fd model.
If you don't have a pro model, these instructions may still work as
a guide. One non-pro owner said you just keep removing stuff until you
get where you want to go. Just be extremely careful to keep track of where
all the screws and connectors go (pencil, paper, cups, etc.).
If you're using a cupcake tin or disposable bathroom cups to hold the
screws, you might label each cup with the dis-assembly step number. This
can reduce questions about where each screw came from during re-assembly.
It is unclear if you must turn your 01 upside down to work on it. (It
may depend on the model.) You may be able to open the 01 on a keyboard
stand. If ever turn your 01 upside down, WATCH OUT FOR YOUR JOYSTICK! You
may need to place something under your 01 (packing foam or pillows, for
example) so the joystick doesn't get broken. Either that or make sure the
joystick hangs over the edge of your workbench or keyboard stand.
Key Repair Note
I'm not sure if you have to go through all these steps to get at the
keys. Some 01 users have reported they had to remove the disk drive, diode
matrix board, and a small circuit board (with pots for adjusting aftertouch).
It may depend on which model of 01 you have. The following is the order
things are removed in the service manual. If it looks like you don't have
to remove something, then don't remove it and see if you can still get
at the keys.
01/Wpro Disassembly
1.Open the lower case
1.1 Remove (21) 4x10screws, 15 of one kind, 6 of another.
2. Remove the Main PCB
2.1 Remove (6) 3x8 screws on rear panel (4 of one type, 2 PLAX types)
2.2 Remove (3) 3x8 screws on the side of the keyboard
2.3 Lift out the Main PCB
3. Remove the Jack PCB
3.1 Remove (4) 3x8 screws on the rear panel.
3.2 Lift out the metal fitting of the power switch
3.3 Remove (3) 3x8 screws
3.4 Life out the Jack PCB
4. Remove the Power Supply and wiring harness
4.1 Remove (6) 3x10 screws on the Power Supply
4.2 Lift out Power Supply
4.3 Loosen 3 spiral clips on the Panel PCB
4.4 Lift out the harness
5. Remove the PCB support plate and ground plate B
5.1 Remove (5) 3x8 screws on the support rail and keyboard
6. Remove the Shield Sheet
6.1 Remove (5) 3x8 screws on the support rail
6.2 Remove (3) 3x8 screws in the keyboard
6.3 Remove (6) 3x8 screws on the Panel PCB
6.4 Lift out the Shield Sheet
7. Remove the Floppy Disk Drive (FDD)
7.1 Remove (2) 3x8 screws on the FDD
7.2 Remove (2) 4x20 screws on the keyboard angle bracket
7.3 Lift out the FDD
7.4 Remove (2) 3x8 screws on the Joystick Panel
8. Remove the Keyboard and Joystick Shield Sheet
8.1 Remove (3) 4x10 screws on the Keyboard
8.2 Remove (7) screws on the Joystick Shield Sheet [(5) 3x8, (2) 4x10]
8.3 Lift out Keyboard and the Joystick Shield Sheet
Apparently there's a flimsy board with metal spring contacts underneath
the keys. It looks like "decorative weather stripping" that "keeps the
keys from slipping back and popping out the springs". The contacts on this
board can be easily damaged when re-inserting keys. Several users highly
recommend carefully removing this board when cleaning the keys. Otherwise,
it is highly likely you will accidentally damage these contacts.
If you are disassembling your 01 to work on the keyboard, you can return
to that web page now.
THESE STEPS ARE FOR THOSE REMOVING THE LCD
9. Remove the Joystick Panel Support Rail
9.1 Remove (2) screws on the joystick panel support [(1) 3x10 and (1) 3x8]
9.2 Remove (2) 3x8 screws on the joystick panel
9.3 Lift out the Joystick Panel
9.4 Remove (7) 3x8 screws on the support rail
9.5 Lift out the support rail
10. Remove the LCD and Panel PCB
10.1 Remove (19) 3x8 screws on the panel PCB
10.2 Lift out the Panel PCB
10.3 Remove (4) 3x8 screws on the LCD
10.4 Lift out the LCD
(Optional for other repair)
11. Remove LCD hood and side plate
11.1 Remove (3) 3x8 screws on the LCD hood
11.2 Lift out the LCD hood
11.3 Remove (6) 3x8 screws on the side plates
11.4 Remove (2) 3x8 screws on the rear panel
11.5 Lift out the side plates
01/WproX Disassembly
The proX is perhaps the easiest to work on, a small reward for lugging
around the heaviest of the 01s. The first thing to do is identify the various
screws on the bottom panel. You might label them with a pencil, marking
the surface lightly with the following letters by the appropriate screws.
(Sorry I don't have a picture, only words.):
.
01/WproX Screws: Bottom Panel
| Label |
Holds |
Location |
|
D
|
side
plates
|
There are four screws, one in each corner. Label each with a "D". As
you come forward from the back two screws, there are two more, one on the
left and one on the right. Label each "D". That is, the four screws most
towards the back are "D". |
|
E
|
upper
case
|
Coming forward from the back, after the four "D" screws, are three
screws in a line from left to right. Each has a washer. Label each "E". |
|
A
|
keyboard
|
Jumping to the front, there are 7 screws in a line between the two
"D" screws in the corners. Label all 7 as "A". |
|
B
|
front bar
spacer
|
Right behind the middle "A" screw (fourth "A" screw from either end)
is a single screw. Label it "B". |
|
C
|
joystick
panel
|
On the floppy drive side are the only two screws not yet labeled. One is
next to the corner "D" screw, the other next to the rubber foot. Label
each "C"
|
.
1. To open the upper case
A stick of wood is required to hold the top panel open. Get one first!
1.1 On the bottom panel, remove (3) 4x18 screws labeled "E".
1.2 On the back panel, remove (7) screws, all near the card slots and MIDI
jacks. (3) screws near the card slots (one each side, one under); (1) screw
between card slots and MIDI jacks; (2) screws, one each side of the MIDI
jacks; (1) screw closest to MIDI jack screw.
1.3 Open the upper case being CAREFUL not to touch the card slot on the
rear panel and both side plates.
You should now be able to change the battery or do other simple repairs.
2. To remove the keyboard
2.1 Remove seven (7) 5x20 screws on the bottom plate labeled "A".
2.2 Remove eleven (11) screws on the keyboard, (3) 3x10 and (8) 4x14
2.3 Lift out the keyboard, being careful not to hit right side plate.
One user says there's a flimsy board with metal spring contacts underneath
the keys, and the contacts can be easily damaged when re-inserting keys.
He suggests carefully removing this board so you can clean the keys and
not accidentally damage these contacts.
(Optional for other repair)
4. Remove the main circuit board
4.1 Disconnect all wiring harnesses
4.2 Remove seven (7) 3x8 screws on the main circuit board.
4.3 Remove the main circuit board.
5. Remove the Panel circuit board.
5.1 Remove eleven (11) 3x8 screws on the ground plates.
5.2 Remove two (2) 3x8 screws on the circuit board support.
5.3 Remove five (5) 3x8 screws on the shield sheet.
5.4 Remove fourteen (14) 3x8 screws on the Panel circuit board
5.5 Remove five (5) 3x8 PLAX screws on the Panel circuit board.
5.6 Remove the joints of the LCD hood.
5.7 Lift out the Panel circuit board.
6. Remove the LCD
6.1 Remove (4) 3x8 PLAX screws.
7. Remove the LCD hood
7.1 Remove (3) 3x8 screws.
Re-assembly
When putting screws back into holes in plastic, BE VERY CAREFUL not to
start new threads (which may strip out old material, and the screw won't
hold). The way to do this is to place the screw in the hole, then turn
it counter-clockwise (like unscrewing it) until you feel the screw “pop”
- it just found the start of the old thread. You should now be able to
screw the screw in smoothly and easily. If you meet any resistance during
the early screwing-in, stop, unscrew it and start over.
Follow the Dis-assembly Procedure, but in reverse order. Consult any
notes you made earlier.
Be sure to reconnect all connectors, especially the LCD connector to
the motherboard.
Copyright ©1998-2003 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.
0305270840