Denon AVR-3801 Service Manual page 11

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3 7 6 3 1 5 1 5 0
ADJUSTMENT ADJUSTMENT
Tuner Section Tuner Section
CONNECTION DIAGRAM OF MEASURING INSTRUMENTS CONNECTION DIAGRAM OF MEASURING INSTRUMENTS
' ' FM
FM
STEREO
MODULATOR
75Ω
FMSSG
DIGITAL
VOLTMETER
T E
L 1 3 9 4 2 2 9 6 5 1 3
FM/MPX ALIGNMENT
Tuning
Alignment
Step Frequency
Item Type Frequency
Setting
1 Tuning Center 98.1 MHz FM SSG 98.1 MHz
2 Separation 98.1 MHz FM SSG 98.1 MHz
3 Signal Level 98.1 MHz FM SSG 98.1 MHz
AM ALIGNMENT w w w
Alignment
Step Frequency Input
Item
.
IF SWEEP
1 IF
(Input level is not over to work A.G.C.)
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1U-3318-5 TUNER UNIT
VR502
IC502
TP102
1
T502 VR501
Input Output
Input Level Modulation Coupling Type Connect to
Antenna Digital TP102
60 dBµ None
Terminal Voltmeter (JV36-JV67)
AUDIO
Stereo (L) Antenna AC
60 dBµ OUT
1KHz 100% Terminal Voltmeter
Terminal (R)
Antenna
20 dBµ Off
Terminal
Output Adjustment
x a o u 1 6 3
y
Type Connect to Points
i
Maximum height and best
Oscilloscope IC502 12Pin T503
symmetry curve
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8 9
' ' AM
AM
OSCILLOSCOPE
GND
OUT AM IF AM
Q Q
3 7 6 3 1 5
Adjust
Remarks
Points Adjust to
Function : FM
± 50mV
T502
Mode : Auto
Maximum
VR502
Separation
Light
"TUNED"
VR501
FLD
Character
c o
Remarks
Adjust to
.
2 4 2
9 8
1U-3318-5 TUNER UNIT
T503
1
12 Pin
IC502
1 5 0 8 9 2 4 9 8
m
AVR-3801 AVR-3801
9 9
2 9 9
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