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2. FM/AM Tuner Adjustment
(1) Dummy Antenna Circuit
10 ohm
60 ohm
Input
For 50 ohm FM Signal Generator
(2) Connections
+
-
FM Signal Generator
+
-
AM Signal Generator
(3) Control Settings
Power Switch
...................................................................... ON
Fader Control
................................................... Center Position
Balance Control
............................................... Center Position
Treble Control
................................................... Center Position
Bass Control
..................................................... Center Position
(4) Adjustment Procedures
Step
Description
FM S-METER
1
Adjustment
45 ohm
Output
<Figure 3>
Antenna Receptacle
FM Dummy Antenna
Antenna Receptacle
AM Dummy Antenna
Connection
Signal Generator
87.5MHz
Figure 5
(Input 28dBu,
Mod. OFF)
30ohm
15pF
Input
65pF
For 50 ohm AM Signal Generator
Monitor Unit +
DC/DC Converter Unit
TP1121
TP2511
GND
Tuner Unit
* Connect to GND
for 2 to 3 sec.
Monitor Unit +
DC/DC Converter Unit
TP1121
TP2511
GND
Tuner Unit
* Connect to GND
for 2 to 3 sec.
Band Switch
..................................... FM/MW/LW
MX Effect
...................................................... OFF
T-CORR Effect
............................................. OFF
Others
.......................................................... OFF
Test Point /
Dial Control
P .W.Board
Coordinates
<Auto adjustment>
1. Select FM Mode.
2. Connect to TP1102 and GND for
2 to 3 sec.
TP1102
(NOTE : Perform the auto adjustment
(1-E)
87.5MHz
by decreasing input level between 3
TP1121
and 5dBu, and thenperform the
(1-F)
auto adjustment again with input level
28dBu.
In this as make sure output at TP1121
shows 1.5± 0.1V.)
Output
<Figure 4>
DC Volt Meter
+
-
<Figure 5>
DC Volt Meter
+
-
<Figure 6>
Adjustment
TO CONTENTS
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