Qs7/8 Main Revision E; Qs7/8 Main Revision F; Table 12 - Qs7/8 Main Pcb Revision E Changes; Table 13 - Qs7/8 Main Pcb Revision F Changes - Alesis QS Series Service Manual

6.24 QS7/8 Main Revision E

CHANGES FROM REV:
Change all text from Rev D to E
Change R25, R24, R28, R27, R6, R7, R9, R10 into 12K
Reroute and GND isolate MIDI IN connects
Add assy file

6.25 QS7/8 Main Revision F

CHANGES FROM REV:
Borders added to PCB at production's request. Now, many back panel parts become
waveable. Because of new waving technology, the audio jacks can be waved without
harm or corrosion. Rev.E and Rev.F are electrically the same.
Change all text from Rev E to F
Move via from beneath the BNC jack
Straighten trace into headphone jack
Straighten trace above M3
Remove SMK from heatsink
Lower MIDI THRU text
Add .4" border with breakaway tabs on jack side of PCB
Add .15" border with breakaway tabs on keyboard side of PCB
Add fiducials on breakaway borders
Shrink optojack mounting holes to original size
Move the extra hole center to the same level as the bottom right mounting hole
Alesis QS Series Keyboards Service Manual V1.00

Table 12 - QS7/8 Main PCB Revision E Changes

PART NUMBER:
D TO REV:
DATE:
CHANGE:

Table 13 - QS7/8 Main PCB Revision F Changes

PART NUMBER:
E TO REV:
DATE:
CHANGE:
9-40-1241
E
7-1-96
9-40-1241
F
7-22-96
37 11/19/06