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ALESIS QS SYNTHESIZERS UNOFFICIAL REPAIR GUIDE 10 FIGURE 10 - S6 CASE SCREW LOCATIONS FIGURE 11 - QS7QS8 CASE SCREW LOCATIO
ALESIS QS SYNTHESIZERS UNOFFICIAL REPAIR GUIDE 11 4.40 REPLACING INDIVIDUAL KEYS Broken keys are an unfortunate consequence
ALESIS QS SYNTHESIZERS UNOFFICIAL REPAIR GUIDE 12 2.34 THE KEYSCAN ASIC While the task of polling the keyboard may seem difficult
ALESIS QS SYNTHESIZERS UNOFFICIAL REPAIR GUIDE 13 The harder a key is pressed, the faster it moves. Since Rate = Distance/Time kno
ALESIS QS SYNTHESIZERS UNOFFICIAL REPAIR GUIDE 2 REPAIR A BROKEN PITCH BEND WHEEL So you’ve been using your pitch bend wheel for v
ALESIS QS SYNTHESIZERS UNOFFICIAL REPAIR GUIDE 3 Now you should see something like this... This is what we are look
ALESIS QS SYNTHESIZERS UNOFFICIAL REPAIR GUIDE 4 Make sure the pin is NOT wide open, avoid anything like this: This is the way
ALESIS QS SYNTHESIZERS UNOFFICIAL REPAIR GUIDE 5 Now, how long should the spring wires be? Use the original to measure or place b
ALESIS QS SYNTHESIZERS UNOFFICIAL REPAIR GUIDE 6 AUDIO OUT NOISE REPAIR SYMPTOM Low signal level, noisy or humming main audio o
ALESIS QS SYNTHESIZERS UNOFFICIAL REPAIR GUIDE 7 3) With the QS open it is easy to find the power supply board and lying by its s
ALESIS QS SYNTHESIZERS UNOFFICIAL REPAIR GUIDE 8 5) With the solder iron, replace the transistor with the new one. 6) Close
ALESIS QS SYNTHESIZERS UNOFFICIAL REPAIR GUIDE 9 REPAIR A BROKEN KEY 4.00 TROUBLESHOOTING AND REPAIR With the release of the origi
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