Adjustment - Kenwood AR-304 Service Manual

AR-304/KRF-A4020
N o . I T E M
FM SECTION : EXCEPT E,T,Q type
DISTORTION
1
(STEREO)
2 TUNING LEVEL
FM SECTION : E,T,Q type only
1 DISCRIMINATOR
DISTORTION
2
(MONO)
DISTORTION
3
(STEREO)
4 TUNING LEVEL
AUDIO SECTION
1 IDLE CURRENT
SYSTEM CONNECTIONS
(a)
AM
PLAY IN PLAY IN
GND
L
R
PHONO
AUX
FM-MPX-SG
FM-MPX-SG
Dummy antenna
AM SG
6

ADJUSTMENT

INPUT SETTINGS
SELECTOR : FM
(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)
–
SPEAKERS
R
A
+ - -
REC OUT PLAY IN REC OUT PLAY IN
+ - -
B
SUBWOOFER
TAPE2/
MD / TAPE1
MONITOR R
PRE OUT
(A)
AC voltmeter
(C)
POLAR SG
(D)
OUTPUT RECEIVER
S E T T I N G S S E T T I N G S
(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
AUTO
(B)
98.0MHz
MONO
(B)
98.0MHz
Connect a DC
Volumeter
across
Volume: 0
CN11 (L)
CN12 (R)
AC 110 - AC 220 - AC 110 - AC 220 -
120V 240V 120V 240V
L
SWITCHED TOTAL
+
150W MAX
+
L
Oscilloscope
Distortion meter
(B)
ALIGNMENT
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
(TUNER UNIT) where ED51
(TUNED) goes on.
L4
0V
(TUNER UNIT)
L5
Minimum distortion (a)
(TUNER UNIT)
IFT
Minimum distortion
(TUNER
(L or R)
UNIT : A1)
Adjust VR1 and
VR1 stop at the point
(TUNER UNIT) 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)