60
WhitakerAudio
the heater connections are made separately. The recommended procedure for installing the
connecting wires is as follows:
1) Feed a bare wire from the component side through the pad and into the socket
soldering tab.
2) Crimp in place (see Figure 5.2
b
).
3) From the component side, pull the wire tight and solder in place
4) Trim the excess lead length.
5) Solder the socket tab.
Table 5.2 shows the pins that should be connected to the PWB.
– Repeat the connection process for each PWB-to-socket connection, being careful to match
up the right pad on the board with the right connection on the socket. (See Figure 5.2
c
.)
This is best done by starting at pin 1 on one side of the socket, and on pin 9 on the other
side. Double-check your work as you proceed.
The next task is to make the heater connections to the nine sockets on the PWB. The following
procedure is recommended.
– Install the 3-post terminal strip on the foil side of the board using the hole provided near
C55.
– Identify pins 3 and 4 on the 7-pin tube sockets and pins 4 and 5 on the 9-pin sockets.
These pins are used for the heater connections.
Table 5.2
PWB to Tube Socket Connections for the FM Tuner Board
Pin No.
V51,
6BQ7
V52,
6U8
V53,
6CB6
V54,
6CB6
V55,
6AL5
V56,
6C4
V57,
12AU7
V58,
12AU7
V59,
12AU7
Pin 1
yes
yes
yes
yes
yes
yes
yes
yes
yes
Pin 2
yes
yes
yes
yes
yes
no
yes
yes
yes
Pin 3
yes
yes
no*
no*
no*
no*
yes
yes
yes
Pin 4
no*
no*
no*
no*
no*
no*
no*
no*
no*
Pin 5
no*
no*
yes
yes
yes
yes
no*
no*
no*
Pin 6
yes
yes
yes
yes
yes
yes
yes
yes
yes
Pin 7
yes
yes
yes
yes
yes
yes
yes
yes
yes
Pin 8
yes
yes
yes
yes
yes
Pin 9
no
yes
no*
no*
no*
* = heater connection
Содержание AM/FM Stereo Tuner 2012
Страница 1: ...WhitakerAudio AM FM StereoTuner User and Assembly Manual...
Страница 11: ...11 AM FM Stereo Tuner Figure 1 1 Schematic diagram of the AM tuner section...
Страница 17: ...17 AM FM Stereo Tuner Figure 1 2 Schematic diagram of the FM tuner section...
Страница 34: ...34 WhitakerAudio Figure 3 1 Component layout for the AM tuner PWB...
Страница 36: ...36 WhitakerAudio Figure 3 3 Component layout for the FM tuner PWB...
Страница 69: ...69 AM FM Stereo Tuner Set the FM tuner board aside it will be used later b...
Страница 101: ...101 AM FM Stereo Tuner Figure 5 11 Chassis view of the AM FM Stereo Tuner...
Страница 159: ...159 AM FM Stereo Tuner...
Страница 160: ...WhitakerAudio AM FM StereoTuner...
