Concord Radio Corp. 1-404 Schematic

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Product Information:
Model:1-404
Manufacturer:Concord Radio Corp. (Lincoln Radio)

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Schematics Content:

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Page 1:

CONCORD PAGE 18-1

MODELS 1 -Ltotb

CONCORD RADTO CORP.

ALIGNMENT AND SERVICE DATA

Remove chassis from cabinet tor alignment. A signal generator
is required having the following frequencies: 455 KC and 1400 KC
An output meter should he connected across the speaker.

FIRST STEP: Connect the hot lead from the generator to the ANT. I
section ct the gang condenser, through a .1 MFD. condenser. The `
ground lead from the generator may be connected to any spot on the i
metal chassis. Turn the gang condenser to complete minimum ca-
pacity. Set the generator to 455 KC. Adjust the movable trimmers in the `

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IF cans, until a maximum reading is noted on the output meter.
The volume control ol the receiver should be turned to maximum .
during the IF and all subsequent alignment and the generator output

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SECOND STEP: With the leads from the generator still connected as
in IF alignment, adjust the generator to 400 KC. Set the dial pointer
to 1400 KC on the dial scale. Adjust. the oscillator trimmer until the
signal is tuned in.

THIRD STEP: Remove the generator leads from the condenser. Connect
the hot lead from the generator through a 200 MMFD. condenser to
one of the leads which project from the back ot the loop antenna.
Connect the ground lead of the generator to the remaining lead. With
the generator and the receiver still tuned to 1400 KC, adjust the antenna
trimmer until a maximum reading is noted on the output meter.

ANT, TRIMMER

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TUBE AND rntMMER LOCATiON

BAYYZRY OPERATED

(C)John F. Rider

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