Yamaha RX-V396 Service Manual page 26

RX-V396/RX-V396RDS/HTR-5230/HTR-5230RDS
AM Adjustment (This should be done after FM adjustment.)
G Connection diagram (Measuring instruments)
1) Adjustment of sensitivity.
See page 22 for TP locations & adjustment points.
Step Adjustment item
Adjustment of
sensitivity
1
(630kHz)
Verification of
sensitivity
2
Verification of
3
signal meter
Verification of
4
auto tuning
Execution of FACTORY PRESET (Refer to page 20.) will facilitate setting reception frequency for adjustment.
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AM ANT
AM
AM SG
dummy
antenna
GND
Reception
Signal (ANT IN)
frequency
AM ANT 630kHz
630kHz (B-1)
50dBµ
1kHz
30% modulation
AM ANT 630kHz
630kHz (B-1)
1080kHz 1080kHz
1440kHz (B-2)
30% modulation 1440kHz
(B-3)
1080kHz
AM ANT
(B-2)
1080kHz
90dB
MONO
1 kHz
30% modulation
—10dB or less
AM ANT
60dBµ
manuals search engine
AM loop antenna
L
TUNER
R
P.C.B
REC
OUT
Adjustment
Test point
point
T2
REC OUT
AM ANT
ACVM
DIST. M
Oscilloscope
Rating
Audio output should be maximized.
Repeat steps 1 and 2.
Distortion should be 10% or less at
each frequency.
Check to ensure that the voltage at
the ANT terminal is 54dBµ or less.
All signal meters should light.
All signal meters should turn OFF.
Auto reception should be available
when the tuning key is moved UP
and DOWN.
Audio must be muted during
search.