53
AM/FM Stereo Tuner
5.2
Assembly of the FM Tuner/Multiplex PWB
Check the shipping box for the major component groups. Find the FM tuner box. Set the other
boxes aside for now. Organize the components for the tuner in a logical manner, grouping
resistors together, capacitors together, and so on. Note that a schematic diagram of the FM tuner is
provided, along with a copy of the PWB component layout. The component layout sheet is a
useful reference as many of the part numbers are obscured when the components are installed.
The estimated time required to complete assembly of the FM tuner PWB is 7 hours.
Note that a small daughter PWB is included with the FM tuner board. The smaller board will
hold parts for the multiplex matrix circuit. It will be mated with the main FM tuner board prior to
installation of the board into the chassis.
After reviewing the Construction Techniques section of this manual, begin populating the
PWB. As the packing envelopes are used, set them aside for recycling. Before beginning, clean
the soldering iron tip.
– Install R52, R59, R88 –
100 k
Ω
, 0.5 W
. Solder in place.
– Install R53, R66, R69 –
68
Ω
, 0.5 W
. Solder in place.
– Install R54, R80, R83 –
470 k
Ω
, 0.5 W
. Solder in place.
– Install R55, R60, R87, R92 –
10 k
Ω
, 0.5 W
. Solder in place.
– Install R56, R72, R79, R97, R100 –
1 m
Ω
, 0.5 W
. Solder in place.
– Install R57 –
6.8 k
Ω
, 2 W
. Solder in place, providing about 1/4-inch clearance above the
board. Note that R51 is also contained in the package with R57. Resistor R51 is part of
T51 and is typically provided with T51. Set R51 aside for now; it will be used later if
necessary.
– Install R58, R85 –
22 k
Ω
, 0.5 W
. Solder in place.
– Install R61 –
330 k
Ω
, 0.5 W
. Solder in place.
– Install R62 –
150
Ω
, 0.5 W
. Solder in place.
– Install R63, R67, R70, R93, R95, R96, R103 –
68 k
Ω
, 0.5 W
. Solder in place. Note that
R93, R95, R96, and R103 are located on the matrix daughter board.
Summary of Contents for AM/FM Stereo Tuner 2012
Page 1: ...WhitakerAudio AM FM StereoTuner User and Assembly Manual...
Page 11: ...11 AM FM Stereo Tuner Figure 1 1 Schematic diagram of the AM tuner section...
Page 17: ...17 AM FM Stereo Tuner Figure 1 2 Schematic diagram of the FM tuner section...
Page 34: ...34 WhitakerAudio Figure 3 1 Component layout for the AM tuner PWB...
Page 36: ...36 WhitakerAudio Figure 3 3 Component layout for the FM tuner PWB...
Page 69: ...69 AM FM Stereo Tuner Set the FM tuner board aside it will be used later b...
Page 101: ...101 AM FM Stereo Tuner Figure 5 11 Chassis view of the AM FM Stereo Tuner...
Page 159: ...159 AM FM Stereo Tuner...
Page 160: ...WhitakerAudio AM FM StereoTuner...