Adjustment - Kenwood AR-404 Service Manual

AR-404/KRF-A4030/A4030E/A4030-S
www.freeservicemanuals.info
N o . I T E M
FM SECTION : EXCEPT E type
DISTORTION
1
(STEREO)
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
GND
FM
75Ω
Dummy antenna
INPUT SETTINGS
(C)
98.0MHz 1kHz,
±68.25kHz dev. Selector
: L or R Pilot : ±6.75kHz
dev. 70dBf (ANT. input)
(A)
98.0MHz MONO 1kHz,
±75kHz dev.
25dBf (ANT. input)
SELECTOR : FM
(A)
98.0MHz 1kHz,
±40kHz dev.
70dBf (ANT. input)
(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)
–
PLAY IN PLAY IN REC OUT PLAY IN REC OUT PLAY IN
L
R
PHONO CD AUX MD / TAPE1 TAPE2/
MONITOR
FM-MPX-SG (A)
FM-MPX-SG POLAR SG
(D)
AM SG
Digitized in Heiloo Netherlands

ADJUSTMENT

OUTPUT RECEIVER
S E T T I N G S S E T T I N G S
SELECTOR : FM
(B) 98.0MHz
MONO
(B)
98.0MHz
Adjust NO.1 and NO.2 repeat.
Connect a DC
voltmeter
MONO
between CN2
98.0MHz
1 and CN2 2
(TUNER UNIT)
MONO
(B)
98.0MHz
(B)
98.0MHz
MONO
(B)
98.0MHz
Connect a DC
Volumeter
across
Volume: 0
CN11 (L)
CN12 (R)
SPEAKERS
R L
A
+ - - +
+ - - +
B
R L
AC voltmeter
Oscilloscope
Distortion meter
(C)
(B)
ALIGNMENT
P O I N T S
IFT Minimum distortion
(TUNER
UNIT: A1)
VR1
(TUNER UNIT)
(TUNED) goes on.
L4
(TUNER UNIT)
L5
Minimum distortion (a)
(TUNER UNIT)
IFT
Minimum distortion
AUTO
(TUNER
UNIT : A1)
VR1
(TUNER UNIT)
(TUNED) goes on.
VR1 (L)
VR2 (R)
(b)
Dc voltmeter
CN11, 12
12/11/2017
ALIGN FOR
F I G .
(a)
(L or R)
Adjust VR1 and
stop at the point
(a)
where ED51
0V (a)
(a)
(L or R)
Adjust VR1 and
stop at the point
(a)
where ED51
(b)
11 mV
6