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RX-807VTN
FM/AM
Tuner Alignment Procedures
T101
>
One
LP101
Wiles
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eo
e
oe
ge
o TC105
—
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be101
Lpioz«
{=}
108
(=)
T103
7106 T105
FRONT
1. FM section
@ FM oscillator : L103
(1) Set the frequency display to "108.0MHz'".
(2) Confirm the FM inter-station noise is received.
(3) Adjust L103 so that the voltage of test point
"TP251" becomes 8.3V+0.1V.
(4) Set the frequency display to "87.5MHz"
and confirm the voltage of test point
"TP251"
is 1.5V~2.2V.
HM FM antenna coil : L101, L102,
(1)
Adjust L101, and L102 to obtain the maximum
sensitivity at 89.9 MHz.
@ FM antenna trimmer : TC101, TC102
(1)
Adjust TC101
and TC102 to obtain the
maximum
sensitivity at 105.9MHz.
(2)
Repeat the adjustment of L101, L102, TC101 and
TC102.
M@ FM detector coil : T7141, 7142
(1)
Connect a digital voltmeter to test point "TP141",
and receive to "100.1MHz" signal with SSG ATT 70
cB.
(2)
Adjust T141
so that the digital voltmeter becomes
0+1.5mV.
(3)
At the same time, Adjust T142 so that the
monaural distortion of the output becomes
minimised.
2. MW
section
Note:
[]
:TheU.S.A., Canada
()
: Australlia,the U.K. and
Continental Europe
{} : Other coutries
Channel space 9kHz
[]
:Other coutries
Channel space 10kHz
H MW
oscillator : T103
(1) Set the frequency display to [ 530kHz } (522kHz)
{531kHz}{530kHz] and confirm the voltage of test
point TP101
is 0.9V+0.2V.
(2)
Set the frequency display to [ 1710kHz] (1629kHz)
{1602kHz}[1600kHz] and confirm the voltage of
test point TP101 is { 8.0+0.8V] (7.5V +0.8V)
{7.2V £0.7V} [7.2£0.7V].
(3)
If its voltage exceeds the allowance, adjust T103 to
obtain the voltage.
MW antenna coil : T101
(1)
Connect a loop antenna to the "AM Loop"
terminal on the rear panel.
(2) Adjust T101 to obtain the best receiving sensitivity
at 600kHz or 603kHz.
MW antenna trimmer : TC105
(1)
Adjust TC105 to obtain the best receiving
sensitivity on 1400KHz or 1404kHz.
LW section
Note
[] : Italy
LW oscillation :T104
(1)
Set the frequency display to 144kHz and adjust T104
so that the voltage of TP101 becomes
0.8+0.4V[0.8V £0.1V].
(2)
Setthe frequency display to 353kHz [290kHz] and
confirm the voltge of test point TP101 is7.7V + 0.6V
(5.7V 0.5].
LW antenna coil : T102
(1)
Connect a loop antenna to the "AM Loop" terminal
onthe rear panel.
(2) Adjust T102 to obtain the best receiving sensitivity at
164kHz [164kHz].
LW antenna trimmer : TC106
(1)
Adjust TC106 to obtain the best receiving sensitivity at
353kHz [245kHz].
(No. 20333)
1-23
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