Sangean WR-2, Service Manual

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5. ALIGNMENT FOR FM TUNING SENSITIVITY
a. Required Instruments
FM Signal Generator
SSVM
b. Alignment Procedure
Mode Adjustment Procedure
(1) Turn on radio.
(2) Connect a SSVM to speaker TP7 and TP8.
(3) Connect a FM signal generator to TP1 and TP2.
(4) Set the signal generator to 22.5 kHz deviation with 1 kHz modulation.
(5) Always tune the generator frequency to exactly same as the radio band
frequency before adjustment.
(6) Tune the FM frequency to 106MHz and adjust TC3 & TC4 to have a max.
audio output.
(7) Tune the FM frequency to 90MHz and adjust TC3 & TC4 to have a max.
audio output.
FM
T3
T4
TC3
TC4
(8) Repeat (6) to (7) as necessary to minimize tracking error.
c. Instrument Connection
TC4
TC3
T3
T4
TP2
TP1
SSG
TP8
TP7
DVM
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