Kurzweil K2600 Series, Service Manual

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3-8
K2600R Disassembly/Assembly
Opening the K2600R
6. Remove the two screws that secure the MIDI jacks to the rear panel.
7. Remove the four hex standoffs and fl at washers that secure the SCSI ports to the rear
panel.
8. Remove the screw that secures the CPU Board to the mounting post.
9. Press the tabs of the three nylon PC board standoffs away from the CPU Board and lift the
board clear of the tabs.
10. Remove the CPU Board by moving it toward the front panel to clear the SCSI ports and
MIDI jacks.
Replacing the CPU Board
1. Place the CPU Board in position over the three nylon PC board standoffs. Be sure the SCSI
ports and MIDI jacks are positioned through the openings provided for them in the rear
panel.
2. Press the CPU Board down that secure it onto the standoffs.
3. Install the screw that secures the CPU Board to the mounting post.
4. Install the two screws that secure the MIDI jacks to the rear panel.
5. Install the four hex standoffs and fl at washers that secure the SCSI ports to the rear panel.
6. Place the K2600R on its side.
7. Hold the CPU holding bracket in position over its mounting hole on the bottom enclosure
and install the screw through the bottom enclosure.
8. Place the K2600R fl at in its normal position.
9. A number of CPU Board cables cross over the DSP Board. When reconnecting cables, do
so in the following order.
Connect the fl at ribbon cable from the Front Panel/Scanner Board to the CPU Board,
location J813. Be sure to install the cable locking clip.
Caution: The Disk Drive and Sampling Option fl at ribbon cables are the same size and
could easily be reversed. Be sure to pay special attention when reconnecting these cables,
connecting these cables incorrectly could cause the cables to literally melt.
Connect the fl at ribbon and shielded wire cables from the fl oppy disk drive to the CPU
Board, locations J805 and J807. Be sure to install the cable locking clip on the fl at ribbon
cable.
If you disconnected the cables from locations J808 (DAC) and J801 (Sampler) connect them
and install the locking cable clips on all
fl at ribbon cables.
Connect the stranded wire cable from the Front Panel/Scanner Board to the Power Supply
Board, location J108.
10. Follow the procedure on page 3-6 to replace the DSP Board.