appendix A Y EC-2 96kHz A/D/D/A upgrade
Install the new EC-2 PCBsNOTE: The Analog Input and Analog Output
7. Find the daughterboard in the EC-2 package: itPCBs look very similar. Verify that you have
has two 26-pin flexible cables attached to it.the correct PCB by looking for the part number
Insert the ribbon connector labeled OJ4 TOand part name in the text in the corner of the
MAIN PCB� on the daughterboard into the 26-PCB.
pin header labeled on the main PCB as OJ15 TO
A/D PCB�.11. Place the Analog Output PCB in the bottom set
of rear panel holes (labeled OUTPUT on the
8. Insert the ribbon connector labeled OJ3 TOrear panel) with the components facing down
MAIN PCB� on the daughterboard into the 26-(so that you can read the white text on the PCB,
pin header labeled on the main PCB as OJ14 TO
D/A PCB�.which says OD/A PCB� and OAnalog Output�).
Put a few of the washers and nuts on the 1/4�
The headers on the main PCB sit near the backjacks to hold the PCB in place. Screw them
center, where the old input/output PCBs used todown all the way, but do not tighten yetNit
plug in. The red side of each cable should face theshould be just a little loose.
right of the HD24 (closest to the fan). Verify that
the cables don?t have any twists in them and that12. Place the Analog Input PCB in the top set of rear
there are no unconnected or exposed pins on thepanel holes (labeled INPUT on the rear panel)
headers.with the components facing down and put a
few of the washers and nuts on the 1/4� jacks to
9. Lay the daughterboard gently on the PCBs athold the PCB in place. Screw them down all the
the rear of the hard drive cages until the Analogway, but do not tighten.
Input and Analog Output PCBs are installed.
10. Get the new Analog Output (D/A) PCB from its
packaging. Remove the nuts and washers from
the 1/4� connectors on the new Analog Output
(D/A) PCB.
HD24 with EC-2 installed
Daughterboard PCB
1
Analog In
A/D PCB
2
New DCAnalog Out
power cableD/A PCB
3
4
5
6
EC-2 ManualA-5 |
ACEC
