24
RX-V495/RX-V495RDS/HTR-5140/HTR-5140RDS
Step
Adjustment item
Signal (ANT IN)
Test point
Rating
Reception
frequency
Adjustment
point
Adjustment of
front end IFT
FM ANT (75
Ω
)
98.1MHz
30dB
µ
MONO 1kHz
100% modulation
98.1MHz
(A-4)
Front end IFT
Adjust so that the meter is
maximum.
CAUTION: Over-adjustment of
the IFT core will reduce the
sensitivity. (Maximum
±
90
°
)
6
Verification of
monaural distortion
FM ANT (75
Ω
)
98.1MHz
70dB
µ
MONO 1kHz
100% modulation
98.1MHz
(A-4)
REC OUT L, R
0.9%/–41dB or less
7
Verification of
stereo distortion
FM ANT (75
Ω
)
98.1MHz
70dB
µ
Stereo L or R
1kHz,
100% modulation
98.1MHz
(A-4)
Tuning mode
should be
AUTO.
REC OUT L, R
1) Set the tuning mode to
MAN'L MONO.
2) S/N should be 30dB at each
frequency of 88.1MHz,
98.1MHz, and 106.1MHz.
3) Check to ensure that the
voltage at the ANT terminal
is 6dB
µ
or less.
(U,C,R,T : 6dB
µ
or less
A,B,G,L : 8dB
µ
or less)
8
Verification of
sensitivity
FM ANT (75
Ω
)
88.1MHz
98.1MHz
106.1MHz
MONO 1kHz
Modulation off
88.1MHz
(A-6)
98.1MHz
(A-4)
106.1MHz
(A-7)
ANT (75
Ω
)
With SSG output at L or R, the
signal leakage level at the other
channel should be minimized.
28dB or more.
9
Adjustment of
separation
FM ANT (75
Ω
)
98.1MHz
70dB
µ
Stereo L or R
1kHz,
100% modulation
98.1MHz
(A-4)
VR2
REC OUT L, R
10
–33dB(2.2%) or less
STEREO indicator
should light.
Adjust so that all signal meters
light.
Check to ensure that signal
meters turn OFF.
Adjustment of
signal meter
FM ANT (75
Ω
)
98.1MHz
45dB
µ
MONO 1kHz,
30% modulation
–10dB
µ
or less
98.1MHz
(A-4)
VR1
11
Automatic reception should
be available when the tuning
k e y i s m o v e d U P a n d
DOWN.
The stereo indicator should
light.
Audio muting should be
applied during tuning.
Verification of auto
tuning
FM ANT (75
Ω
)
98.1MHz
23dB
µ
Stereo L or R
1kHz,
30% modulation
98.1MHz
(A-4)
12
Execution of FACTORY PRESET (Refer to page 20.) will facilitate setting reception frequency for adjustment.
Pin 16 of IC1
See page 22 for TP locations & adjustment points.