Kenwood RXD-M37-L Service Manual page 7

QQ
3 7 63 1515 0
FM Alignment:
Connect FM S/G to ANT inputs (mod 1 kHz 22.5kHz dev.)
Step S/G Frequency
1 87.5 MHz
2 108 MHz
3 90.1 MHz
4 106.1 MHz
TE
L 13942296513
5
FM GENERATOR
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.
ADJUSTMENT
TEST UNIT
Vt
GROUND
Figure 6. FM Band Frequency Coverage Alignment
Dial Setting Indicator
Low end Connect DC voltage
meter to test point Vt
and ground
High end Same as step 1
90.1 MHz Connect oscilloscope
or VT/VM to speaker
jack
106.1 MHz Same as step 3
Repeat steps 3 and 4 to minimize tracking error.
DUMMY
ANTENNA
Figure 7. FM Band/Tracking
x ao u163
y
i
2 9
8
DC
METER
Adjust
L203
L204
VC202
Q Q
3 6 7 1 3 1 5
TEST UNIT
R-OUT
L-OUT
TP1
GND
co
.
RXD-M37
9 4 2 8
Remarks
Adjust until Vt equal to:
1.5 ± 0.05V
Confirm Vt: 7-9V
Adjust until Maximum
output
Adjust until maximum
0 5 output 8 2 9 9 4 2 8
OSCILLOSCOPE
VTVM
DUMMY LOAD
m
9 9
9 9
7