25
RX-V396/RX-V396RDS/HTR-5230/HTR-5230RDS
GND
AM loop antenna
AM ANT
TUNER
P.C.B
AM SG
AM
dummy
antenna
ACVM
DIST. M
Oscilloscope
L
R
REC
OUT
●
Connection diagram (Measuring instruments)
1) Adjustment of sensitivity.
AM Adjustment (This should be done after FM adjustment.)
Step
Adjustment item
Signal (ANT IN)
Test point
Rating
Reception
frequency
Adjustment
point
1
Adjustment of
sensitivity
(630kHz)
AM ANT
630kHz
50dB
µ
1kHz
30% modulation
630kHz
(B-1)
REC OUT
Audio output should be maximized.
Repeat steps 1 and 2.
2
Verification of
sensitivity
AM ANT
630kHz
1080kHz
1440kHz
30% modulation
630kHz
(B-1)
1080kHz
(B-2)
1440kHz
(B-3)
AM ANT
Auto reception should be available
when the tuning key is moved UP
and DOWN.
Audio must be muted during
search.
4
Verification of
auto tuning
AM ANT
60dB
µ
Distortion should be 10% or less at
each frequency.
Check to ensure that the voltage at
the ANT terminal is 54dB
µ
or less.
Execution of FACTORY PRESET (Refer to page 20.) will facilitate setting reception frequency for adjustment.
See page 22 for TP locations & adjustment points.
T2
All signal meters should light.
3
Verification of
signal meter
AM ANT
1080kHz
90dB
MONO
1 kHz
30% modulation
1080kHz
(B-2)
All signal meters should turn OFF.
—10dB or less
Содержание RX-V396
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