Kenwood TS-570D instruction manual SO-2 TEMPERATURE-COMPENSATED Crystal Oscillator Tcxo

14 INSTALLING OPTIONS

SO-2 TEMPERATURE-COMPENSATED CRYSTAL OSCILLATOR (TCXO)

CAUTION: SWITCH OFF THE POWER AND UNPLUG THE DC POWER CABLE BEFORE BEGINNING INSTALLATION.

1Remove the bottom case (8 screws).

2Remove the protective cover installed on the PC

board (6 screws).

3Remove the 13 screws that fasten the PC board to

the chassis.

4Remove the clamp that fastens the heat sink to the chassis.

Clamp

Heat sink

5Remove the cable from the CN1 connector.

CN1

6Take the CN1 connector cable off the cable holder.

7Cut the leads of the R503 and R504 resistors.

Cut here

R504

R503

8Insert the SO-2 unit into the specified position on the PC board.

SO-2

9 Turn the PC board over.

• Be careful not to damage the flat cables connected to the PC board, and not to drop the SO-2 unit.

1 2

10 Solder the five pins of the SO-2 unit to the PC board, then cut off the SO-2 pins extruding from the PC board.

11Re-position the PC board.

12Re-install the 13 screws on the PC board.

13Re-install the protective cover on the PC board (6￿screws).

14Re-position the clamp.

•Be careful with the orientation of the clamp. See the drawing in step 4.

15Reconnect the cable to the CN1 connector.

16Pull the CN1 connector cable, and lock it using the cable holder.

17 Replace the bottom case (8 screws).

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