Yamaha RX-V596, Service Manual

Page: 22 / 54

24
RX-V596/HTR-5250/RX-V596RDS
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 0.1% (–60dB 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 as follows.
(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.
(48 dB or less)
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
0.2%
(U,C,R,T: –54dB or less)
(A,B,G,L: –28dB 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.