Alesis QS Series Keyboards Service Manual V1.00
23
11/19/06
Note: If the QS's power is turned off, the 48K IN must be turned on again. The display
may show that the 48K IN is on, but it MUST be toggled back to ON to get it to work
4.00 Troubleshooting and Repair
With the release of the original QuadraSynth keyboard, Alesis engineers and
technicians began a heavy learning curve into what works and what doesn’t in keyboard
design. Because of this experience, it’s descendants are not only extremely stable designs but
also very easy to troubleshoot and repair. Once the keyboard “clamshell” is open, the
technician has instant access to all of the units essential components. The QSR of course uses
all of the experience Alesis has gained over the years in making quality rack mount cases.
4.10 QS6/QS7/QS8 Disassembly/Reassembly
All of the keyboards use the same “clamshell” type of casetop. The top and sides are
one piece and are removed together. Figure 9 shows the only way to correctly remove the top
panel. It should be noted here that extreme caution is required when opening and closing the
unit due to the delicate nature of the aftertouch cable(s). Damaging these cables might easily
result in having to change the entire keyboard, which can be expensive and time consuming.
Figure 10 shows the casetop and keyboard screw locations for the QS6. Figure 11 does
the same for the QS7 and QS8 (while the QS8 is physically larger, it has the same screw
footprint as the QS7).
Figure 9 - Keyboard Casetop Removal
