GDP-32
II
INSTRUCTION MANUAL
May 2002 Section 17, Page 14
17.2 HANDLING BOARDS AND EPROMS
All receiver boards are easily removed and reinserted on the motherboard.
Before handling, removing, or inserting any board, place the receiver on an anti-static pad and
attach a grounding strap between your arm and the COM binding post on the Analog I/O Panel,
or between you and the anti-static pad. This ground reference minimizes the chance that static
discharge will destroy integrated circuits on one of the boards.
REMOVING AND INSERTING BOARDS
NOTE: Always turn the power completely OFF before removing or inserting any board.
Board Access and Removal, Small Case
1. Remove the Analog I/O side panel.
2. One or more cables may need to be disconnected to gain access to the boards. The
analog boards are secured by a retaining bar on the top and bottom of the card cage. The
bar is held in place by two screws.
3. After removing the retaining bar, disconnect the input cables from the analog boards and
the calibration and timing board, and gently pull the board toward you.
Board Access and Removal, Large Case
1. Open the Battery case.
2. Disconnect the Molex connector that connects the batteries to the terminal strip mounted
on the aluminum analog card cage access panel.
3. Remove 12 Phillips-head screws from the lower case panel, and then remove the panel.
4. Disconnect the input cables to the analog boards (BD183) and the timing and calibration
board (BD244 or BD288).
5. If removing the timing and calibration board, disconnect other cables as well.
6. Once the cables are disconnected, remove the boards pulling them gently towards you.
Board Insertion
NOTE: The boards are connected to the motherboard with a 64-pin DIN connector. These
connectors and their mating sockets are polarized so they cannot be inserted improperly.
1. Locate the appropriate bus slot. The boards in the analog card cage of both the large and
small case GDP-32
II
are oriented so that the board component side faces right as you look
into the card cage.
2. Ensure that the board faces the correct direction before inserting it.
3. Slide the board into the nylon guide rails and push the board in until it is firmly seated in
the bus connector.
4. Make sure all cards are in their proper place.
5. Reconnect all cables, making sure that they are all connected in the proper sequence.
6. When replacing analog boards, push the black cable connector into its blue socket. The
connector retaining clamps should overlap the edge of the black connector to prevent
accidental dislodging. If they do not overlap, wiggle the connector to ensure that it is
firmly seated. Be careful not to bend any pins.
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