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Service manual

ManualsBrandsENSONIQ ManualsElectronic KeyboardASR-10
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Replacing ASR Rack Modules
Replacing the Rack O.S. EPROMs
Removing 1.
3
-.
Installing 3.
JMF’ORTANT!
Remove all cables connected to the ASR-10 Rack, including the power cord.
Remove the lid (see Section A).
The two Operating System EPROMs, LOWER (U19) and UPPER (U22), are located in the
center of the digital board next to the OTTO chip (see Figure 15). Carefully remove the
two EPROMs and insert the replacement EPROMs into their respective sockets. Be sure
the notch in each EPROM is facing away from the SIMM sockets.
Make sure all audio cables are unplugged BEFORE turning the unit on. The first
time you turn on the ASR-10 after updating the software, the unit may make a pop.
4.
5.
6.
7.
8.
Check the software version by pressing the Command then Env 1.
Using the right or left arrow button, scroll until the display shows SOFTWARE
INFORMATION.
Press Enter-Yes.
Press the up arrow button until the display show ROM=XX. The version number should
be the same as that printed on the label of the newly installed EPROMs.
Test the unit. Replace all the screws on the bottom plate (use no more than 8 in/lbs of
torque).
SECTION
El
N
Replacing the Rack
OEX-6sr
Board
Removing
Installing
1.
Remove all cables connected to the ASR-10 Rack, including the power cord.
2.
Remove the lid (see Section A).
3.
Remove the PCB Mounting Bracket (see Section 0).
4.
Remove the four (4) #6-32 screws from the OEX-6sr board.
5.
Pop the OEX-6sr board from the two white standoffs by squeezing the standoffs.
6.
Remove
52,
lo-pin ribbon cable from the OEX-6sr board.
7.
Remove the OEX-6sr board from the unit.
8.
Reconnect the ribbon cable from the main board making sure that the striped side is on
pin 1.
9.
With the new OEX-6sr board tilted on a slight angle, insert the jacks into the holes in the
rear panel and snap the board onto the standoffs.
10. Install the four (4) screws that hold the OEX-6sr board to the PCB Mounting Bracket.
11. Install the PCB Mounting Bracket (see Section 0).
12. Power up, test the unit, and reattach the lid (see Section A).
ASR Service Manual
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