MAINTENANCE
4-5
12.
Removing the Base Board.
You must have completed steps 9, 10, and 11 first.
A)
Make sure that AC power is disconnected from the 8600.
B)
Remove the three power ribbon cables from the power supply and dress them
away from the Base Board.
C)
Using a 3/16-inch nut driver, remove the two jackscrews and lock washers
holding the DB25 connector to the rear panel.
D)
Remove the four Phillips screws and four standoffs holding the Base Board to
the bottom of the chassis.
E)
Verify that all connectors have been removed.
F)
Remove the Base Board.
13.
Removing the Power Supply assembly.
To remove the power supply it is necessary to remove the 8600 from the rack and
to remove the top cover. It is most convenient to remove the Power Supply As-
sembly if the Base Board, RS232 Board, CPU board, and Display Interface Module
have been removed.
A)
Be sure that the AC line cord is disconnected from the power supply.
B)
Unplug the three ribbon cables from the power supply.
C)
Unplug the two cable assemblies from the power transformer by squeezing
the locking tab and removing the connector.
D)
Remove the nut securing the green ground wire to the chassis.
E)
Remove the two Phillips screws securing the mains input connector to the rear
of the chassis
F)
Remove the three Phillips screws at the bottom edge of the power supply
G)
Remove the four Phillips screws holding the power supply assembly to the top
apron of the chassis.
H)
Remove the power supply assembly.
14.
Reinstalling the Power Supply Assembly:
A)
Hold power supply board into main chassis, so that it aligns with the four
mounting holes on the top apron of the chassis.
B)
Replace the four Phillips screws holding the power supply assembly to the top
apron of the chassis, but do not fully tighten them yet.
C)
Replace but do not fully tighten the two Phillips screws that hold the IEC con-
nector.
D)
Replace and fully tighten the three Phillips screws at the bottom edge of the
power supply
Summary of Contents for OPTIMOD-FM 8600
Page 1: ...Operating Manual OPTIMOD FM 8600 Digital Audio Processor Version 4 1 Software...
Page 7: ...Operating Manual OPTIMOD FM 8600 Digital Audio Processor Version 4 1 Software...
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