9
D-NF610/NF611
TJ8(VT)
L1
FM TRACKING
adjustment
L4
AM FREQUENCY
COVERAGE adjustment
CT3,L3
AM TRACKING
adjustment
CT3
L3
L5
TV TRACKING
adjustment
•
Switch Location and mode setting
VOLUME
: MAX
BASS or BASS
: OFF
AVLS
: OFF
[AM]
BAND: AM
Signal generator
[FM]
BAND : FM
Signal generator
• Connecting levelmeter
• Connecting digital voltmeter
TUNER SECTION
Adjustment Location: Main board (Side B)
0 dB = 1 µV
AM FREQUENCY COVERAGE ADJUSTMENT AND CHECK
Adjustment Part
Frequency Display Reading on Digital Voltmeter
Confirmation
530kHz
1.0
±
0.5V
Confirmation
1710kHz
8.0
±
0.5V
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on levelmeter
L4
620kHz
CT3
1400kHz
FM FREQUENCY COVERAGE CHECK
Adjustment Part
Frequency Display Reading on Digital Voltmeter
Confirmation
87.5MHz
5.2
±
0.5V
FM TRACKING ADJUSTMENT
Adjust for a maximum reading levelmeter
L1
98.0MHz
US model only
TV TRACKING ADJUSTMENT
Adjust for a maximum reading on levelmeter
L5
ch10 197.75MHz
•
Repeat the procedures in each adjustment several times for the
maximum level meter indication.
•
The AM tracking adjustments should be finally done by the
trimmer capacitors.
Put the lead-wire
antenna close to
the set.
30% amplitude modulation by 400Hz
signal.
Output level : as low as possible
AM RF signal
generator
0.01
µ
F
FM RF signal
generator
FM IN
point
75kHz(100%) amplitude modulation
by 1kHz signal.
Output level: as low as possible
100k
Ω
digital voltmeter
TJ8 (VT)
16
Ω
set
levelmeter
J301 (
i
)
