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Alesis QS7.1 Service Manual Page 37
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Alesis QS Series Key
boards Service Manual V1.00
28
11/19/0
6
5.00 Ap
pendix
A
Pinout Diagrams
5.10 S
G A
SIC
Figure 15 - SG ASIC Pinout
5.11 FX
A
SIC
Figure 16 - FX
A
SIC Pinout
1
2
...
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96
97
Preface
2
READ THIS!
2
Warnings
3
Safety Suggestions
4
General Troubleshooting
5
Acknowledgments
6
Table Of Contents
7
List Of Figures
9
List Of Tables
9
1.00 General Descriptions
10
2.00 Theory Of Operation
16
2.31A RESET
18
2.31C Other Processor I/O
19
2.31D MIDI
19
2.31E PC Serial Connector
20
2.32A Sound Generation
20
2.32B ROM Card Connector
21
2.34A Reading Velocity
22
2.34B QS8 Key Construction
22
2.53A QS6/7/8 PC Serial
28
2.53B QS6/7/8 MAC Serial
28
2.53C QSR Variant
28
3.00 Test Procedures
29
Figure 8 - 48KHz Test
31
Figure 15 - SG ASIC Pinout
37
Figure 16 - FX ASIC Pinout
37
Figure 19 - FX SRAM Pinout
39
Figure 20 - EPROM Pinout
39
Figure 21- Sound ROM Pinout
39
Figure 22 - GAL Pinout
40
Figure 23 - DAC Pinout
40
6.15 QS6 Main Revision F
43
6.20 QS7/8
44
6.21 QS7/8 Main Revision B
44
6.22 QS7/8 Main Revision C
45
6.23 QS7/8 Main Revision D
45
7.10 QS6
48
7.20 QS7/QS8
49
7.40 QSR
49
SYSTEM EXCLUSIVE FORMAT
51
PARAMETER FORMAT
58
Keyboard Sound:
63
9.10 QS6 Service Parts List
77
9.20 QS7 Service Parts List
81
9.30 QSR Service Parts List
85
9.40 QS8 Service Parts List
88
11.00 INDEX
94
12.00 Schematics
97
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