Replacing The Cpu Board - Kurzweil K2600 Series Service Manual

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 flat washers that secure the SCSI ports to the rear
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
10. Remove the CPU Board by moving it toward the front panel to clear the SCSI ports and

Replacing the CPU Board

1. Place the CPU Board in position over the three nylon PC board standoffs. Be sure the SCSI
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 flat 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
8. Place the K2600R flat in its normal position.
9. A number of CPU Board cables cross over the DSP Board. When reconnecting cables, do
10. Follow the procedure on page 3-6 to replace the DSP Board.
3-8
panel.
board clear of the tabs.
MIDI jacks.
ports and MIDI jacks are positioned through the openings provided for them in the rear
panel.
and install the screw through the bottom enclosure.
so in the following order.
Connect the flat 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 flat 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 flat ribbon and shielded wire cables from the floppy disk drive to the CPU
Board, locations J805 and J807. Be sure to install the cable locking clip on the flat ribbon
cable.
If you disconnected the cables from locations J808 (DAC) and J801 (Sampler) connect them
and install the locking cable clips on all flat ribbon cables.
Connect the stranded wire cable from the Front Panel/Scanner Board to the Power Supply
Board, location J108.