Maintenance Procedures - Electronics Quantium 310 Maintenance Manual
Page 5-6 Document Ref 941113-001 Rev 2
6) Locate the pulser cable connection in the calculator head:-
•HOM Board connection - break the W&M seals using
wirecutters. Using a small screwdriver, loosen and remove screw
on HOM board sealing bracket. Locate the pulser cable
connection on the HOM board.
•I/O Board connection - break the W&M seals using wirecutters.
Using a small screwdriver, loosen and remove the screw on the
I/O cable security cover. Locate the pulser cable connection on
the I/O board.
•Mainboard connection - disconnect all connections on the
Comms board and IEB (where fitted). Break the W&M seals on
the pulser sealing bracket. Using a small screwdriver, loosen
and remove the two screws on the pulser sealing bracket and
remove completely. Locate the pulser cable connection on the
mainboard.
7) Disconnect the pulser connection completely.
Note : take care to note the position of this connection on the
relevant board.
8) Using a small screwdriver, remove the connector from the pulser
cable.
WARNING : NOTE THE ORDER OF THE COLOURED WIRES IN THE
CONNECTOR.
9) Pull the pulser cable down from the calculator head, through the
unit to the pulser.
10) Using a 3mm allen key, loosen and remove the four bolts on the
pulser casing. Remove the pulser and cable from the casing.
11) Fit the new pulser into the pulser casing.
12) Using a 3mm allen key, re-fit and tighten the four bolts on the pulser casing.
13) Feed the cable back up the unit, through the gland and into the calculator head. Replace
the cable ties and tighten the relevant gland.
Note : ensure that the cable is routed correctly and contained accordingly.
14) Where applicable, use a small flathead screwdriver to re-fit the connector to the pulser
cable. Re-connect the pulser cable connection to the relevant board in the calculator
head.
Note : refer to the wiring diagram in section 7.
16) If removed, re-fit the centre plate cover.
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