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The following equipment is required for installing the
optional units.
•Large Philips screwdriver
•Small Philips screwdriver
•25 W pencil soldering iron (for the SO-2 unit only)
REMOVING THE BOTTOM CASE
When installing the optional DRU-3A, VS-3, or SO-2
unit, remove the bottom case first.
1Remove the 8 screws.
2Lift off the bottom case.
DRU-3A DIGITAL RECORDING UNIT
CAUTION:
SWITCH OFF THE POWER AND UNPLUG THE DC
POWER CABLE BEFORE BEGINNING INSTALLATION.
1Remove the bottom case (8 screws).
2Remove the flat cable from the CN15 connector.
3Peel off the paper backing from the cushion installed
on the transceiver PC board.
INSTALLING OPTIONS
Cushion
CN15
CN17
4Plug the DRU-3A connector (CN901) into the CN17
connector.
•The large IC on the DRU-3A must closely contact
the cushion on the PC board.
5Reconnect the flat cable to the CN15 connector.
6Replace the bottom case (8 screws).
DRU-3A