DataKinetics DSC110 User Manual page 161

The 26-way ribbon cable header should be removed from the connector at the top
of the board. The ribbon cable should be removed from each board between the
board being removed and one end of the ribbon cable. The header may be
removed from the connector by applying gentle upward pressure to the ribbon
cable just as it enters the header. Do not use excessive force or the connector
strip will be damaged.
The end bracket retaining screw should then be removed and kept to one side for
re-fitting. The faulty board may then be removed from the chassis.
The replacement card should be unpacked, its link settings verified against those
listed in this manual and the address switch set to the correct setting for the
selected board position. When the settings are correct, the board should be
inserted in the correct position in the chassis and the end plate retaining screw
fitted. The ribbon cable header should be positioned over the connector block and
refitted by applying gentle downward pressure. The PCM interface connectors
should be re-fitted to the rear of the card.
8.3.4 Replacement of central processor card
The CPU card is fitted in board position 3. If a terminal is connected to the Serial
Port mounted on the rear of this card, that connector should be removed.
Before the faulty card can be removed, a 34-way ribbon header and a 10-way
ribbon header require removal from connector blocks at the top edge of the card.
The faulty card should be withdrawn from the chassis and the replacement
unpacked. All link options on the board are factory set and must not be modified.
The new CPU card should be inserted into the equipment and the end plate
retaining screw re-fitted. Take care to replace the CPU card with the same type of
card.
After a new CPU card is fitted it is necessary to reconfigure the converter (using a
disk of the dumped configuration as detailed in Section 6).
8.3.5 Replacement of the solid state memory card
Remove the screw securing the end plate and ease the card from the connector.
Insert the replacement card into the connector and re-fit the screw in the end
panel. Take care to replace the card with the same type of card.
After a new solid state memory card is fitted it is necessary to install the current
version of the operating software (detailed in Section 6).
8.3.6 Replacement of Alarm card
The alarm card is fitted in board position 1.
Before the faulty board is removed, the Alarm Port connector should be
unplugged from the rear of the unit. The two ribbon connectors should be
withdrawn from the back edge of the card using the ejectors. Do not use
excessive force as this may damage the connector.
DataKinetics DSC110 / DSC210 User Manual Issue 12 Page 161