Installing The Sc20-460 - Kenwood TKR-751 Modification Information

3 INSTALLING THE VOICE SCRAMBLER BOARD
3.2

Installing the SC20-460

Follow the procedures below to install the board into the
TKR-750/850/751/851.
1. Remove the front side top panel of the TKR-750/850/
751/851.
Remove 6 screws (N33-3006-45, 3 mm diameter,
black) and pull it up.
2. Remove the FRONT PANEL of the TKR-750/850/751/
851.
Remove 6 screws (N33-4008-45, 4 mm diameter,
black) and pull the FRONT PANEL forward.
3. Remove the FRONT PANEL of the main unit.
3-1. Unhook 4 hooks located on the top and bottom of
the FRONT PANEL and pull it forward.
9
3-2. Remove two connectors (CN600, CN613).
You must be careful when removing the FRONT PANEL
since the panel is connected to the main unit board with the
cable.
4. Remove R742 and R653.
5. Install the SC20-460 board.
5-1. Connect the connector on the SC20-460 board to
Modification Information (MOD)
CN600
R653
the connector (CN601) on the PCB (TX-RX unit B/
2).
CN613
R742
Version: 1.02 USA