Akai AT-K22/L

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2.
AM
(AT-K11L
and
AT-K22L:
MW)
SECTION
ADJUSTMENTS
(Refer
to
Figs.
8, 9,
10,
12)
APRROX
600mm
TEST LOOP
ANTENNA
SET
VOLTMETER
Fig.
12
Instrument
Connections
For
AM(MW)
Section
Adjustments
and
Steps
1
to
4
of
LW
Section
Adjustments
Unless
otherwise
specified,
use
the
adjustment
points
provided
on
the
Tuner
P.C
Board
(Fig.
8)
*
Model
AT-K11L
and
AT-K22L:
ANTENNA
SELECTOR
to
INT.
=
ee
Adjustment
Adjustment
Result
Remarks
|
Item Point
as
a
1
|
Digital
LED
|
VR2
(10
KB)
Apply
a
1,000
kHz,
50
dB
input.
Display
Counter
P.C
Short
TP1
to
GND,
and
TP2
to
GND
on
the
Frequency
Board
Counter
P.C
Board.
(AT-K22/L
(Fig.
10)
Adjust
VR2
until
4th
numeral
display
becomes
Only)
stable
position.
(See
Note
1)
AM
IF
Coil
T2
(BLK)
Maximum
Output
1,000
kHz,
50
dB,
400
Hz
(30%)
input.
T3 (BLK)
3
Low
Range
T4
(RED)
(Model
AT-K11/L)
530
kHz,
50
dB,
400
Hz
(30%)
input.
Scale
Maximum
Output
Scale
indicator
to
530
kHz.
Indication
Error:
Within
2%
(Model
AT-K22/L)
Turn
tuning
knob
fully
counterclockwise.
aie
Display
515
kHz
by
adjusting
T4.
|
-—
4
|
High
Range
vC2
ie
(Model
AT-K11/L)
|
1,600
kHz,
50
dB,
400
Hz
(30%)
input.
Scale
Maximum
Output
Scale
indicator
to
1,600
kHz.
Indication
|
My
Error:
Within
2%
|
(Model
AT-K22/L)
‘Turn
tuning
knob
fully
clockwise.
|
_|
Display
1,650
kHz
by
adjusting
VC2.
5
“|
Low
Range
Bar
Antenna
Maximum
Output
600
kHz,
50
dB,
400
Hz
(30%)
input.
|
Sensitivity
Core
Distortion
AT-K11,
K22:
Factor:
Less
than
10%
Fig.
8
AT-K11L,
K22L:
Fig.
9
6
High
Range
VCl
Maximum
Output
1,600
kHz,
50
dB,
400
Hz
(30%)
input.
Sensitivity
Distortion
Factor:
Less
than
10%
|
Notes:
1.
The optimum point of adjustment is when the
indicated figure stops flashing.
2.
For
best
result,
repeat
Steps
2
through
6
two
or
three
times.
a
18