Kurzweil K2600 Series, Service Manual

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4-16
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
from the DSP Board and slightly lift the left edge of the DSP Board to clear the tabs.
2. To release the DSP Board from the standoffs on the right side of the board, squeeze the top
of the standoffs and slightly lift the right side of the DSP Board.
3. Once the DSP Board is free of the four standoffs, lift the DSP Board straight up to
disconnect the two 50-pin connectors from the CPU Board.
Replacing the DSP Board
1. Place the DSP Board in position onto the four nylon PC board standoffs. This should place
the DSP Board in the correct position over the two 50-pin connectors.
2. Verify that the DSP Board pins are lined up properly with the two 50-pin connectors
located on the CPU Board.
3. Press the DSP Board down to insert the pins on the back of the DSP Board into the two
50-pin connectors on the CPU Board. This also secures the DSP Board into the four
standoffs.
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 fl at ribbon cables use cable locking clips to secure the cables to the connectors. Remove
the cable locking clips from the fl at ribbon cables on the CPU Board. Be sure to set them
safely aside so that you can reinstall them when you reconnect the cables.
3. Disconnect the cables listed in Table 4-7.
4. Remove the two screws that secure the MIDI jacks to the rear panel.
Ref. Name Cable Type Destination
J801 Sampler flat ribbon Sampling Board
J804 LCD flat ribbon LCD Board
J805 Floppy flat ribbon Disk Drive
J807 Floppy Power stranded wire Disk Drive
J808 DAC flat ribbon Audio Board
J813 Scanner flat ribbon Keyboard Scanner Board
J814 DC Power stranded wire Power Supply Board
Table 4-7 CPU Board cables