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Page 5
ZONESENSE DH4
OPERATORS MANUAL
4.6
PCB Removal / Replacement
If the PCB’s have to be removed the following precautions should be observed;
Removing the door will provide better access to the boards and ensure the hinges are not
accidentally stressed.
Personal anti- static procedures must be followed.
When disconnecting the 20 way connecting cable from the PCB, make sure that the cable
remains connected to at least one board to prevent it being misplaced.
Note:
Care should be taken when detaching this connector as it is necessary to depress the
small locking tab to unlock the connector from its base. To reconnect the cable the connector must
first be correctly aligned then pushed into the socket so it locks into position.
Carefully remove the retaining screws at each corner of the board taking care not to damage
any of the components.
Place each board into anti- static storage once removed.
Push Tab Inwards
and Gently Pull
the Connector
From the Socket
Connector