Kurzweil K2600 Series, Service Manual

Page: 46 / 172

3-16
K2600R Disassembly/Assembly
Front Panel Assembly
Removing the LCD Board
To remove the LCD Board, it is necessary to fi rst remove the front cover and Front
Panel/Scanner Board. Follow the procedure on page 3-12 to remove the front cover and the
procedure on page 3-15 to remove the Front Panel/Scanner Board.
1. Remove the locking cable clip and disconnect the fl at ribbon cable from the LCD Board at
its location on the CPU Board (J804).
2. Disconnect the stranded wire cable from the LCD Board at its location on the Backlight
Board (J2).
3. Remove the four screws and fl at washers that secure the LCD Board to the front panel
mounting bracket.
4. Lift the LCD Board off of the front panel mounting bracket. Be sure to feed the fl at ribbon
cable through the opening provided for it on the front panel mounting bracket.
Replacing the LCD Board
1. Feed the fl at ribbon cable through the opening provided for it on the front panel mounting
bracket.
2. Position the LCD Board over the four mounting standoffs on the front panel mounting
bracket.
Note: The correct placement of the LCD Board should seem obvious. However, an arrow
is printed on the LCD Board just below the stranded wire cable connection to indicate the
“Up” direction
.
3. Install the four screws and fl at washers that secure the board.
4. Connect the stranded wire cable from the LCD Board to its location on the Backlight
Board.
5. Connect the fl at ribbon cable from the LCD Board to its location on the CPU Board, and
install the locking cable clip.
6. Follow the procedure on page 3-15 to install the Front Panel/Scanner Board.
7. Follow the procedure on page 3-12 to install the front panel cover.
Removing the AC Entry Module
1. Remove the two screws that secure AC Entry Module to the rear panel.
2. A nut and two star washers (one on each side of the lug) secure the ground wire from the
AC Entry Module to the bottom enclosure. Remove the nut from the ground wire
connection on the bottom enclosure.
3. A cable harness connects the AC Entry Module to the transformer and the power switch.
A molex connector is in-line so that the AC Entry Module can be disconnected from the
transformer. Disconnect the molex connector.
4. To completely remove the AC Entry Module from the unit, you would need to remove the
power switch as well. Follow the procedure on page 3-12 to remove the front panel cover.