Fm Scan (Seek) Sensitivity Adjustment - Pioneer KE-5100 Service Manual

Cassette car stereo with am/fm electronic tuner
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KE-5100/6100
3.6 FM SCAN (SEEK) SENSITIVITY ADJUSTMENT
¢ Connection Diagram
Dummy
Antenna
prom tre sonrese=
FM
SSG
39.80:!
509
37.5
"
1759)
Oo
O
~
° To Adjust
1, Set the mono switch to OFF (AUTO mode). Set the local
switch to OFF (DISTANT mode).
2. Check that the oscilloscope waveforms are 0 V with a zero
SSG output level.
3. Supply a 98.1 MHz
(100%
modulation)
signal with an
output level of 29 +6 dB (xV) from the SSG and tune in.
Check that the oscilloscope waveforms are DC 8V and that
they are in the form of square waves with an average volt-
age of between 5 V and 8 V.
13
CONTROL
UNIT
Antenna Jack
Antenna Plug
Oscilloscope
"Fig. 14
. Set the local switch to ON (LOCAL mode) and set the SSG
output level to 50 + dB (pV).
. Memorize the 98.1 MHz signal in one of the preset buttons,
keep depressing the preset button at intervals of about 0.5
sec. and check that the oscilloscope waveforms aie about 8
Vv
. The above operations may be checked with scanning or
seeking.

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Ke-6100Ke-5100 usKe-6100 usKe-5100 caKe-6100 ca

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