Service manual

24
RX-V595a/HTR-5150/RX-V595aRDS
Step Adjustment item Signal (ANT IN) Test point Rating
Reception
frequency
Adjustment
point
Adjustment of
front end IFT
FM ANT (75Ω)
98.1MHz
30dBµ
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 (75Ω)
98.1MHz
70dBµ
MONO 1kHz
100% modulation
98.1MHz
✽(A-4)
REC OUT L, R 0.1%
7
Verification of
stereo distortion
FM ANT (75Ω)
98.1MHz
70dBµ
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 6dBµ or less.
(A,B,G,L : 8dBµ or less)
8
Verification of
sensitivity
FM ANT (75Ω)
88.1MHz
98.1MHz
106.1MHz
MONO 1kHz
Modulation off
88.1MHz
✽(A-6)
98.1MHz
✽(A-4)
106.1MHz
✽(A-7)
ANT (75Ω)
With SSG output at L or R, the
signal leakage level at the other
channel should be minimized.
48dB
9
Adjustment of
separation
FM ANT (75Ω)
98.1MHz
70dBµ
Stereo L or R
1kHz,
100% modulation
98.1MHz
✽(A-4)
VR2 REC OUT L, R
10
0.2%
•
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 (75Ω)
98.1MHz
45dBµ
MONO 1kHz,
30% modulation
–10dBµ or less
98.1MHz
✽(A-4)
VR1
11
•
Automatic reception should
be available when the tuning
key is moved UP and
DOWN.
•
The stereo indicator should
light.
•
Audio muting should be
applied during tuning.
Verification of auto
tuning
FM ANT (75Ω)
98.1MHz
23dBµ
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.