Alesis A6 Service Manual download pdf (Page 21)

Confidential Alesis Service Manual 8-31-0089-C

3.6 Mechanical Problems

3.601 Endcaps Are Loose

° Remove the endcap from the top panel. This will require removing the associated front

panel PCB. The plastic bosses may be stripped. If so, replace the endcap. Otherwise,

apply Loctite to the screws and re-assemble.

3.602 Keys Make “Clanging” Noise when pressed hard

° Re-seat the springs at the rear of the keys making the noise.

3.603 Pitch Wheel has Too Much Play at Center Position

° Inspect the pitch wheel spring. It should have heat shrink tubing all the way up the

“arms” of the spring. If the tubing doesn’t run all the way, the wheel will have room to

wiggle between the arms.

3.604 Keys Feel “Mushy” When Pressed

° The foam on the top panel is pushing down too hard on the back end of the keys,

interfering with the motion. The problem is with the ribbon controller bracket (9-30-

1314-B). When disassembling the unit, you may notice that the ribbon bracket holes

don’t line up very well with the bottom panel holes. As you force the holes into

alignment to put the screws in, the ribbon controller bracket pulls the top panel metal

slightly (near the end of the keys). This squeezes the foam against the ends of the keys.

Inspect the ribbon bracket and make sure it is bent at the correct angle. You can

manually bend the bracket until the holes line up and the problem is fixed.

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Sleeves

Sleeves need to full

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arms

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Alesis A6 Service Manual Page 21