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Disconnect the multipin plug that connects the rear panel to the IEEE panel. Before
the boards can be removed, the black retaining clips located at the bottom of the
frame must be depressed. NOTE: The IEEE multipin connector is NOT polarized
and can be accidentally reversed during replacement. To avoid this, ensure that the
embossed arrow heads on the plug and socket are aligned. Care must also be
taken to ensure the correct alignment of the IEEE address switch in the rear panel
cut out.
Analogue Board Replacement.
All analogue boards are located behind the rear panel on the left of the frame when
viewed from the rear. To replace a board, remove this panel, locate the board to
replace, depress card retaining clip and pull board back. On all boards additional
connectors need to be disconnected as the board is removed.