A730 CD Player
16.11.00 BN
Upgrade Kit 1.630.027.81
Page 5 of 7
Main Board Modification
Due to the larger size of the new CD drive, the Main Board must be modified as well. The following changes
avoid the toroidal inductor L2 from being touched. For this purpose, the Main Board must be removed.
•
Unsolder R39 and DL3; these components are used no more.
•
L2 has to be installed in a horizontal position. For this behalf, it should be unsoldered. One of its leads must
be extended by unwinding one turn. Bend the leads in such a way that L2 can be mounted horizontally; fix it
to the PCB with hot-melt or silicone adhesive and solder its leads to the corresponding pads.
•
The Servo Board will be touching J3. Therefore J3 must be rotated by 180
°
. Unsolder J3, move the key wire
from pin6 to pin3.
Caution:
Before inserting and soldering J3 in its new position, put an appropriate cutting
of the insulating sheet (or possibly a piece of solid paper) between J3 and the PCB, as an insulation against
the PCB tracks.
•
Replace the label “1.630.052.22/23/24” by the label “ 1.630.070.20”.
•
Reinstall and connect the Main Board.
Caution:
Take care to the placement of the wires with the filters (pos-
sibly in shrinking tube) relative to the Line Amplifier (refer to fig. 6). When installing the front panel, these fil-
ters must neither be touched nor pinched.
