Replacing The Dsp Board; Removing The Cpu Board - Kurzweil K2600 Series Service Manual

K2600/K2600X Disassembly/Assembly
Bottom Enclosure
1. Start with the standoffs on the left side of the board. Press the tabs of the standoffs away
2. To release the DSP Board from the standoffs on the right side of the board, squeeze the top
3. Once the DSP Board is free of the four standoffs, lift the DSP Board straight up to

Replacing the DSP Board

1. Place the DSP Board in position onto the four nylon PC board standoffs. This should place
2. Verify that the DSP Board pins are lined up properly with the two 50-pin connectors
3. Press the DSP Board down to insert the pins on the back of the DSP Board into the two

Removing the CPU Board

The CPU Board is secured to the bottom enclosure with mounting posts that are part of the
bottom enclosure. The mounting posts rise up out of the bottom enclosure and the CPU Board is
secured at four positions.
The CPU Board is secured using three nylon PC board standoffs, a screw, a moveable bracket,
and hardware that secures the SCSI ports and MIDI jacks to the rear panel.
1. Follow the procedure for removing the DSP Board.
2. All flat ribbon cables use cable locking clips to secure the cables to the connectors. Remove
3. Disconnect the cables listed in Table 4-7.
4. Remove the two screws that secure the MIDI jacks to the rear panel.
4-16
from the DSP Board and slightly lift the left edge of the DSP Board to clear the tabs.
of the standoffs and slightly lift the right side of the DSP Board.
disconnect the two 50-pin connectors from the CPU Board.
the DSP Board in the correct position over the two 50-pin connectors.
located on the CPU Board.
50-pin connectors on the CPU Board. This also secures the DSP Board into the four
standoffs.
the cable locking clips from the flat ribbon cables on the CPU Board. Be sure to set them
safely aside so that you can reinstall them when you reconnect the cables.
Ref. Name
J801 Sampler
J804 LCD
J805 Floppy
J807 Floppy Power
J808 DAC
J813 Scanner
J814 DC Power
Table 4-7 CPU Board cables
Cable Type
flat ribbon Sampling Board
flat ribbon LCD Board
flat ribbon Disk Drive
stranded wire Disk Drive
flat ribbon Audio Board
flat ribbon Keyboard Scanner Board
stranded wire Power Supply Board
Destination