Service manual

The Keyboard Assembly
5-6
6. Carefully lift the assembly and tilt it until the keyboard and control board are accessi-
ble.
7. Disconnect the keyboard ribbon cable from J201 on the control board.
8. Disconnect the green wire from the keyboard.
9. Remove the keyboard.
Do not remove the keyboard circuit board from the keyboard bezel. Removing the board
can impair the long-term reliability of the cardiograph.
Removing the Keyboard Flexible Circuit
To remove the keyboard flexible circuit:
1. Perform the procedures Removing the Battery and Removing the Keyboard Assembly.
2. Place the keyboard assembly with the keys down on a flat surface.
3. Grasp the tabs at the ends of one of the connectors and gently pull toward the flexible
circuit. The locking sleeve should now be extended.
4. Repeat with the other connector.
5. Remove the keyboard flexible circuit.
To replace the keyboard flexible circuit, perform the above procedure in reverse.
Removing the Keyboard Display
The keyboard display consists of the LCD, display shield, and mounting hardware.
1. Perform the procedure Removing the Keyboard Assembly.
2. Using a #0 Phillips screwdriver, remove the 4 screws that secure the LCD display.
3. Remove the display shield and 4 rubber o-rings.
4. To remove the flexible circuit, grasp the tabs at the ends of one of the connectors and
gently pull toward the flexible circuit. The locking sleeve should now be extended.
Repeat with the other connector. Lift the flexible circuit out.
5. Remove the LCD.
To replace the keyboard display, perform the above procedure in reverse.
CAUTION