Am Adjustment - Yamaha RX-V595 Service Manual

RX-V595/R-V905/RX-V595RDS
AM Adjustment (This should be done after FM adjustment.)
1. Connection diagram (Measuring instruments)
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.
25
AM loop antenna
AM ANT
AM SG
AM SG
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)
1kHz 1440kHz
30% modulation (B-3)
1080kHz
AM ANT
(B-2)
1080kHz
90dBµ
–10dB or less
AM ANT
60dBµ
L
ACVM
TUNER
R
P. C. B.
REC
DIST. M
OUT
Oscilloscope
Adjustment
Test point
point
T2
REC OUT
AM ANT
Rating
Signal meter should be maximized.
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.