Alesis QS Series Keyboards Service Manual V1.00
11/19/06
viii
3.20 Further Testing .......................................................................................... 22
3.21 Testing 48KHz......................................................................................... 22
4.00 Troubleshooting and Repair ......................................................................23
4.10 QS6/QS7/QS8 Disassembly/Reassembly................................................. 23
4.20 QSR Disassembly/Reassembly................................................................. 25
4.30 Replacing A Whole Keyboard.................................................................... 25
4.40 Replacing Individual Keys.......................................................................... 25
4.51 Replacing QS6 And QS7 Keys................................................................ 26
4.52 Replacing QS8 Keys ............................................................................... 26
4.60 General Troubleshooting ........................................................................... 27
5.00 Appendix A Pinout Diagrams.....................................................................28
5.10 SG ASIC.................................................................................................. 28
5.11 FX ASIC .................................................................................................. 28
5.12 KEYSCAN ASIC ...................................................................................... 29
5.13 MICRO CONTROLLER ........................................................................... 29
5.14 SRAM ...................................................................................................... 30
5.15 EPROM ................................................................................................... 30
5.16 SOUND ROM .......................................................................................... 30
5.19 GAL ......................................................................................................... 31
5.20 DAC......................................................................................................... 31
6.00 Appendix A Updates And Corrections ......................................................32
6.10 QS6............................................................................................................ 32
6.11 QS6 Main Revision B .............................................................................. 32
6.12 QS6 Main Revision C .............................................................................. 33
6.13 QS6 Main Revision D .............................................................................. 33
6.14 QS6 Main Revision E .............................................................................. 33
6.15 QS6 Main Revision F .............................................................................. 34
6.20 QS7/8......................................................................................................... 35
6.21 QS7/8 Main Revision B ........................................................................... 35
6.22 QS7/8 Main Revision C ........................................................................... 36
6.23 QS7/8 Main Revision D ........................................................................... 36
6.24 QS7/8 Main Revision E ........................................................................... 37
6.25 QS7/8 Main Revision F ........................................................................... 37
6.25 Changes To QS7/QS8 VCO Circuit (All Main PCB Revisions)................ 38
6.30 QSR ........................................................................................................... 38
7.00 Appendix B Software Histories .................................................................39
7.10 QS6............................................................................................................ 39
7.20 QS7/QS8 ................................................................................................... 40
7.40 QSR ........................................................................................................... 40
8.00 Appendix C Sys-Ex Implementations........................................................42
8.10 S6 Sys-Ex .................................................................................................. 42
8.20 QS7/QS8//QSR Sys-Ex ............................................................................. 67
9.00 Appendix D Service Parts Lists .................................................................68
9.10 QS6 Service Parts List............................................................................... 68
9.20 QS7 Service Parts List............................................................................... 72
9.30 QSR Service Parts List .............................................................................. 76
9.40 QS8 Service Parts List............................................................................... 79
10.00 Appendix E Dictionary Of Selected Terms..............................................83
11.00 INDEX ........................................................................................................85
12.00 Schematics................................................................................................88
