Tascam DM-24 Service manual

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INSTALLATION INFORMATION
DM-24 V2.0 software upgrade.
Installation procedure.
1. Turn the power off and remove the power cable from the wall socket before starting the
installation.
TASCAM
TEAC Professional Division
7733 Telegraph Road
Montebello, CA 90640
Phone [phone]
Fax [phone]

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TASCAM
TEAC Professional Division
7733 Telegraph Road
Montebello, CA 90640
Phone [phone]
Fax [phone]
INSTALLATION INFORMATION
2. Raise the unit’s top cover by removing 15 cover screws. (See Ex. 1)
Ex. 1
5 SCREWS
(RIGHT SIDE)
5 SCREWS
(LEFT SIDE)
5 SCREWS
(REAR)

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TASCAM
TEAC Professional Division
7733 Telegraph Road
Montebello, CA 90640
Phone [phone]
Fax [phone]
INSTALLATION INFORMATION
3. Detach the armrest by removing the 3 screws located underneath. (See Ex. 2)
4. To keep the top cover in a raised position, partially insert a screw on both sides of the case
where indicated. (See Ex. 3)
3 SCREWS
(ARM REST)
Ex. 2
Ex. 3

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TASCAM
TEAC Professional Division
7733 Telegraph Road
Montebello, CA 90640
Phone [phone]
Fax [phone]
INSTALLATION INFORMATION
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5. Looking into the unit from the rear right side, you will see the (3) I.C.’s to be replaced.
(See Ex. 4)
The EPROM can be removed by sliding the black plastic locking device
in the direction shown below. The holder then li
fts from the PCB allowing
removal of the EPROM. Reverse the procedure to install the new
EPROM.
PANEL
U31
Ex. 4
MAIN
U6
MAIN
U7
Detach
Attach

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TASCAM
TEAC Professional Division
7733 Telegraph Road
Montebello, CA 90640
Phone [phone]
Fax [phone]
INSTALLATION INFORMATION
IMPORTANT INFORMATION!!!
To prevent damage to the EPROMs or EPROM sockets, it is imperative that they are removed and
installed exactly as shown in the following photos.
REMOVAL
To keep the PCB from flexing and possibly cracking, provide support to the PCB while the
locking device is being removed.
Remove the locking device by lifting it STRAIGHT up and away from the EPROM.
One hand is providing support
to the PCB while the other
removes the locking device

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TASCAM
TEAC Professional Division
7733 Telegraph Road
Montebello, CA 90640
Phone [phone]
Fax [phone]
INSTALLATION INFORMATION
Remove the EPROM by placing the index finger of each hand on each end of the EPROM.
Applying equal pressure to both ends of the EPROM, lift it STRAIGHT up and away from the
socket.
NEVER REMOVE THE EPROM BY LIFTING IT FROM ONLY ONE SIDE!!!!!!!!!!
This can cause the EPROM legs to bend or break and the socket to be damaged.

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TASCAM
TEAC Professional Division
7733 Telegraph Road
Montebello, CA 90640
Phone [phone]
Fax [phone]
INSTALLATION INFORMATION
INSTALLATION
Holding the EPROM firmly and parallel to the PCB, place the EPROM STRAIGHT down into
the socket.
Once again, provide support to the PCB while the locking device is being reinstalled.

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TASCAM
TEAC Professional Division
7733 Telegraph Road
Montebello, CA 90640
Phone [phone]
Fax [phone]
INSTALLATION INFORMATION
6. Confirm the new software version by simultaneously holding down the “2ND F.”,
“HIGH” (E.Q.) and the “ -” (LIBRARY) buttons while powering on the DM-24
(Diagnostics Mode). (See Ex. 5)
Ex. 5

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TASCAM
TEAC Professional Division
7733 Telegraph Road
Montebello, CA 90640
Phone [phone]
Fax [phone]
INSTALLATION INFORMATION
7. While in “Diagnostics Mode”, using the cursor keys, select SRAM INIT. Press ENTER to
select and ENTER again to perform the function. Using the cursor keys, select EXIT then press
ENTER. (See Ex. 6)
8. Secure the unit by reversing steps 1,2,3 and 4.
9. Return the old EPROMs to TASCAM using the pre-addressed envelope.
CURSOR
KEYS ENTER KEY
Ex. 6

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TASCAM
TEAC Professional Division
7733 Telegraph Road
Montebello, CA 90640
Phone [phone]
Fax [phone]
INSTALLATION INFORMATION
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1. IF ELECTING TO HAVE L.A. FACTORY SERVICE DO THE UPGRADE:
The requester will be responsible for labor charges (if the unit is out of
warranty) and the cost of shipping the unit to and from our Los Angeles
Factory Service location.
Additional repair costs may be incurred for services requested other than the
upgrade.
The unit must be addressed to the following location in the following
manner.
TEAC AMERICA, Inc.
(Factory Service)
ATTN: DM-24 Upgrade Program
7733 Telegraph Road
Montebello, CA 90640
For Labor estimate or status, please contact Factory Service.
[phone]
or
e-mail to: [email protected]
2. IF ELECTING TO HAVE A LOCAL SERVICE AGENCY DO THE UPGRADE:
To locate the nearest Authorized Service Agency, call [phone].
Follow the prompt to find the closest “TASCAM” agency (bypass the TEAC
agency selection and press #3).
Call the Agency and arrange for a convenient time to have the upgrade
completed. They will inform you of any estimated labor charge.