Denon D-AJ03 Service Manual Page 6

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6
6
D-AJ03
6
ADJUSTMENT
TUNER SECTION
Connections and adjustment point
AM FMG
AM SG
FM stereo modulator
FM SG
Modulation frequency: 400Hz
Modulation factor: 30%
Test loop antenna
Loop antenna
To T P
To Output Terminal
Digital Voltmeter
Distortion Meter
Separation Meter or
Electronic Voltmeter
To Output Terminal
Antenna Terminal
Rear Panel Side
75 ohms
Coaxial Cable
Modulation frequency: 1kHz
L+R: 90% (67.5kHz Dev.)
Pilot: 10% (7.5kHz Dev.)
75kHz Dev.: 100%
60cm
T401
T404
TUNER PWB
T403 T402
R419
R425
TC401
FM ALIGNMENT (BAND BUTTON: FM, AUTO)
Input Output
Step
Alignment
Item
Tune-in Point
(Channel Setting)
Measuring
Equipment
Frequency Level Modulation Connect to
Measuring
Equipment
Connect to
Align Part Set Value Remarks
1
FM DC
Balance
98 MHz FM SG 98 MHz
60 dB
1kHz
75 kHz dev
FM Ant
Te r m i n a l
Digital
Voltmeter
Both Leads
of R425
T404
20mV
Align with Mono
Modulation Signal
AM ALIGNMENT (BAND BUTTON: AM)
Input Output
Step
Alignment
Item
Tune-in Point
(channel Setting)
Measuring
Equipment
Frequency Level Modulation Connect to
Measuring
Equipment
Connect to
Align Part Set Value Remarks
E3:520 kHz
T403
E3: 1.0±50mV
1 Band Edge
E3:1710 kHz
Digital
Voltmeter
Both Leads
of R419
Approx.
E3: (8.3±0.5V)
No Adjustment
Required
2 IF No Broadcast Area AM SG (900 kHz)
No AGC
Effects
400 Hz 30% Loop Ant
Electronic
Voltmeter
LINE 1
Output
Te r m i n a l
T401
Maximum
Output
3Tracking
E3:600 kHz
AM SG
E3: 600 kHz
No AGC
Effects
400 Hz 30% Loop Ant
Electronic
Voltmeter
LINE 1
Output
Te r m i n a l
T402
Maximum
Output
4Tracking
E3:1400 kHz
AM SG
E3: 1400 kHz
No AGC
Effects
400 Hz 30% Loop Ant
Electronic
Voltmeter
LINE 1
Output
Te r m i n a l
TC401
Maximum
Output
5 Repeat Steps 3 and 4, and set the output to maximum.
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