Invivo Millennia 3155A, Service Manual

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3-2
3) Unplug the AB77 from the Processor Motherboard ( AB88 ).
c. Remove the A/D Board ( AB65 ) as follows:
1) Unplug the cables attached to the AB65 board.
2) Remove three (3) screws from the AB65 board.
3) Unplug the
AB65
from the Processor Motherboard (
AB88
).
d. Remove the I/O Board ( AB70 ) as follows:
1) Unplug the cables attached to the AB70 board.
2) Remove two (2) hex nuts securing right side P.C. board retainer bracket to
corresponding support bracket.
3) Remove two (2) screws securing left side P.C. board retainer bracket to
corresponding support bracket.
4) Unplug the AB70 from the Processor Motherboard ( AB88 ).
e. Unplug both battery connection wires from the front of the AB69A board.
f. Remove four (4) screws from
AB69A
.
g. Unplug
AB69A
from
AB69
by carefully disconnecting two board-to-board connectors
between the two boards.
h. Unplug the cables attached to AB69 .
i. Unscrew the standoffs protruding from the AB69 and lift the board from its mounting.
j. Reverse the above steps to install a replacement AB69 and/or AB69A board.
3.3 EMI Gasket Removal/Replacement. If upon routine inspection of the Front Panel
Assembly, the foam EMI gasket is torn or shows evidence of excessive wear, replace the gasket as
follows:
a. Perform paragraph 3.1 to remove the Cover and Front Panel Assemblies.
b. Peel off the existing gasket, ensuring that no residue remains on the front panel molding.
c. Carefully apply the replacement gasket (IRI Part Number H112) by positioning the front
edge of the self-adhesive surface on the edge of the front panel molding step.
d. Press the gasket into place, ensuring the gasket is firmly secured to the step all the way
around the front panel molding.
3.4 Battery Removal/Replacement.
Remove the batter(ies) as follows:
a. Turn monitor power OFF.
b. Disconnect AS153 DC Power Adapter from monitor back panel.
c. Turn the battery door latch counter-clockwise to unlatch and open the door.
d. Press the holding latch to free the battery and pull it out of the slot.
e. Align the replacement battery into an open slot and push the battery into the slot until the
holding latch snaps into place.