Transmitter Vcxo - Philips 50 T Series Service Manual

Transmitter VCXO

Transmitter VCXO

To remove the Transmitter VCXO, follow the instructions at the beginning
of this chapter for dismantling the Transmitter then:
1. Take out complete assembly from housing by lifting from the cardio
side.
2. Lift top board from bottom board by lifting from the cardio side.
3. Remove the Cardio and Toco socket rings.
4. Seperate the top board from the bottom board.
5. Using a suitable flat bladed screwdriver, carefully prise the VCXO out
of the board.This task must be done carefully as excessive pressure
exerted upon the board may damage delicate components.
6. See Chapter 8 for details of RF Bench Repair Test.
When the replacment VCXO is received:
1. To fit the replacement part, angle the new VCXO and locate its pins in
one side of the socket. Holding the board in your hand, carefully seat
the VCXO, applying gentle pressure until it is securely in position.
Excessive pressure exerted onto the lower board may damage delicate
components.
2. Connect the top board to the lower board.
3. Replace the connector rings onto the cardio and toco sockets.
4. Insert the board into the housing at an angle, Toco side first.
Removing the VCXO
Chapter 7 - Replacing Parts