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Adjustment - Kenwood AR-404 Service Manual

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AR-404/KRF-A4030/A4030E/A4030-S
N o .
I T E M
FM SECTION : EXCEPT E type
DISTORTION
±68.25kHz dev. Selector
1
(STEREO)
: L or R Pilot : ±6.75kHz
dev. 70dBf (ANT. input)
2
TUNING LEVEL
FM SECTION : E type only
1
DISCRIMINATOR
DISTORTION
2
(MONO)
DISTORTION
3
(STEREO)
4
TUNING LEVEL
AUDIO SECTION
1
IDLE CURRENT
SYSTEM CONNECTIONS
(a)
ANTENNA
AM
PLAY IN
PLAY IN
REC OUT
PLAY IN REC OUT PLAY IN
GND
FM
L
75Ω
R
PHONO
CD
AUX
MD / TAPE1
FM-MPX-SG
FM-MPX-SG
Dummy antenna
AM SG

ADJUSTMENT

OUTPUT
INPUT SETTINGS
S E T T I N G S
SELECTOR : FM
(C)
98.0MHz 1kHz,
(A)
98.0MHz MONO 1kHz,
±75kHz dev.
25dBf (ANT. input)
SELECTOR : FM
Connect a DC
(A)
voltmeter
98.0MHz 1kHz,
between CN2
±40kHz dev.
1 and CN2 2
70dBf (ANT. input)
(TUNER UNIT)
(A)
98.0MHz 1kHz,
±40kHz dev. MONO
70dBf (ANT. input)
(C)
98.0MHz
1kHz, ±40kHz dev.
Selector : L or R
Pilot : ±6kHz dev.
70dBf (ANT. input)
(A)
98.0MHz MONO 1kHz,
±40kHz dev.
25dBf (ANT. input)
Connect a DC
Volumeter
CN11 (L)
CN12 (R)
SPEAKERS
R
L
A
+
-
-
+
+
-
-
+
B
TAPE2/
R
L
MONITOR
(A)
AC voltmeter
(C)
POLAR SG
(D)
RECEIVER
ALIGNMENT
S E T T I N G S
(B)
98.0MHz
MONO
(B)
98.0MHz
(TUNER UNIT)
Adjust NO.1 and NO.2 repeat.
MONO
98.0MHz
(TUNER UNIT)
MONO
(B)
98.0MHz
(TUNER UNIT)
AUTO
(B)
98.0MHz
MONO
(B)
98.0MHz
(TUNER UNIT)
across
Volume: 0
Oscilloscope
Distortion meter
(B)
ALIGN FOR
P O I N T S
IFT
Minimum distortion
(TUNER
(L or R)
UNIT: A1)
Adjust VR1 and
VR1
stop at the point
where ED51
(TUNED) goes on.
L4
0V
L5
Minimum distortion (a)
IFT
Minimum distortion
(TUNER
(L or R)
UNIT : A1)
Adjust VR1 and
VR1
stop at the point
where ED51
(TUNED) goes on.
VR1 (L)
11 mV
VR2 (R)
(b)
Dc voltmeter
CN11, 12
F I G .
(a)
(a)
(a)
(a)
(a)
(b)
6

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A4030eA4030-sKrf-a4030