Circuit Board Installation - GE DigitalFlow GC868 Service Manual

April 2008
Circuit Board Removal
(cont.)

Circuit Board Installation

B-8
Note: These connectors should be pulled straight up and off the
printed circuit board. DO NOT remove the leads from the
screw terminals.
KEYPAD CABLE
5. Remove the flat
the front of the printed circuit board. Mark pin #1 of the cable
connector, which is located nearer the rear of the enclosure.
6. Disconnect the twisted-pair
J2
connector beneath the left side of the printed circuit board.
Although this connector is polarized, it will help to note that the
red wire is closer to the rear of the enclosure.
LCD DISPLAY CABLE
7. Remove the flat
near the option card sockets. Mark pin #1 of the cable connector,
which is located nearer the front of the enclosure.
8. Using a slotted screwdriver, remove the three mounting screws
along each side of the printed circuit board. Carefully lift the
printed circuit board out of the enclosure.
Proceed to the next section for instructions on installing the new
printed circuit board.
Refer to Figure B-2 on page B-11 and complete the following steps:
1. Position the new printed circuit board within the electronics
console so that it rests on the six standoffs in the base of the
enclosure and the option card sockets are located near the rear of
the enclosure. Secure the circuit board in place with the six screws
previously removed.
LCD DISPLAY CABLE
2. Connect the flat
the option card sockets. Make sure the marked pin #1 side of the
cable connector is located nearer the front of the enclosure.
3. Connect the twisted-pair
beneath the left side of the printed circuit board. This connector is
polarized and can only be installed with the red wire closer to the
rear of the enclosure.
KEYPAD CABLE
4. Connect the flat
front of the printed circuit board. Make sure the marked pin #1
side of the cable connector is located nearer the rear of the
enclosure.
connector from terminal J50 near
DISPLAY BACKLIGHT
cable from
connector from terminal J52
connector to terminal J52 near
DISPLAY BACKLIGHT
cable to connector
connector to terminal J50 near the
Optional Enclosures
J2