Document Ref 941113-001 Rev 2 Page 5-23
Quantium 310 Maintenance Manual Maintenance Procedures - Electronics
5.12 Changing the OCB or UAM
Before starting the maintenance procedure, please refer to section 2.
Ensure the dispenser is isolated and all power is turned off.
The Option Controller Board (OCB) and User Access Module (UAM) are accessed from
side A of the calculator head (see section 2.3 for the identification of the dispenser sides).
Tools required
•Replacement OCB or UAM (refer to the Parts Manual for exact part identification)
•Long nose pliers
•Flathead screwdriver
Description of Parts
INSTRUCTIONS
1) Follow the instructions given in section 2.5 to gain access to the calculator head on side A
of the dispenser.
2) Locate the OCB or UAM on the WWC centre plate on side A of the dispenser.
3) Disconnect all connectors on the OCB or UAM.
4) Use the flathead screwdriver to loosen and remove the screw at the bottom right hand
corner of the board.
5) Use the pliers to squeeze together the standoffs in order to release the OCB or UAM from
the centre plate.
6) Fit the new OCB or UAM onto the standoffs on the centreplate.
7) Re-fit the screw on the OCB or UAM to secure in position.
8) Replace all connectors on the board.
9) Ensure that all tools and unused materials are removed.
10) Close the calculator head door and lock.
11) Re-instate power to the dispenser and test its operation.
12) Dispose of all waste accordingly.
OCB
UAM
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