Yamaha RX-V596 Service Manual page 22

See page 22 for TP locations & adjustment points.
Step Adjustment item
Adjustment of
front end IFT
6
Verification of
monaural distortion
7
Verification of
stereo distortion
8
Verification of
sensitivity
9
Adjustment of
10
separation
Adjustment of
signal meter
11
Verification of auto
tuning
12
Execution of FACTORY PRESET (Refer to page 20.) will facilitate setting reception frequency for adjustment.
Reception
Signal (ANT IN)
frequency
FM ANT (75Ω) 98.1MHz
98.1MHz (A-4)
30dBµ
MONO 1kHz
100% modulation
FM ANT (75Ω) 98.1MHz
98.1MHz (A-4)
70dBµ
MONO 1kHz
100% modulation
FM ANT (75Ω) 98.1MHz
98.1MHz (A-4)
70dBµ Tuning mode
Stereo L or R should be
1kHz, AUTO.
100% modulation
FM ANT (75Ω) 88.1MHz
88.1MHz (A-6)
98.1MHz 98.1MHz
106.1MHz (A-4)
MONO 1kHz 106.1MHz
Modulation off (A-7)
FM ANT (75Ω) 98.1MHz
98.1MHz (A-4)
70dBµ
Stereo L or R
1kHz,
100% modulation
FM ANT (75Ω) 98.1MHz
98.1MHz (A-4)
45dBµ
MONO 1kHz,
30% modulation
–10dBµ or less
FM ANT (75Ω) 98.1MHz
98.1MHz (A-4)
23dBµ
Stereo L or R
1kHz,
30% modulation
Adjustment
Test point
point
Front end IFT Pin 16 of IC1
REC OUT L, R
REC OUT L, R
ANT (75Ω)
VR2 REC OUT L, R
VR1
RX-V596/HTR-5250/RX-V596RDS
Rating
Adjust so that the meter is
maximum.
CAUTION: Over-adjustment of
the IFT core will reduce the
sensitivity. (Maximum±90°)
0.1% (–60dB or less)
0.2%
(U,C,R,T: –54dB or less)
(A,B,G,L: –28dB or less)
•
STEREO indicator
should light.
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: 6dBµ or less)
(A,B,G,L : 8dBµ or less)
With SSG output at L or R, the
signal leakage level at the other
channel should be minimized.
(48 dB or less)
Adjust so that all signal meters
light.
Check to ensure that signal
meters turn OFF.
•
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.
24