Akai AA-R22/L User Manual

1) AM (AA-R32L: MW) SECTION ADJUSTMENT (Refer to Figs. 3-11, 12)
APRROX
TESTLOOPII
ANTENNA l I
_.:.:.AM=-::S=.S=.G~
0
,----S-E-T __ _,
OUTPUT
AC
VOLTMETER
rs:]
Leh OR Reh
OUTPUT
INPUT
Fig. 3-12 • Instrument Connections for AM (MW, LW) Section Adjustment
Step
Adjustment
Adjustment
Result
Remarks
Item
Point
.
PLL
Digital Display Band SW to FM
l
Frequency
VC7
Indicating Freq. Connect Frequency Counter between
+10.7
MHz TPl and GND. (See NOTE)
700± 1 kHz
Band
SW to AM (MW).
2
AM(MW)OSC T6
(AA-R32/R42)
Connect TP5
to GND.
730± 1 kHz
Connect Frequency Counter between
(AA-R32L)
TP2 andGND.
3
AM IF TB,9 Max Output
1,000
kHz (1008 kHz), 50 dB
400 Hz (30%) input.
Low Range Sensitivity Max Output
600 kHz (603 kHz),
50 dB, 400 Hz
4
600kHz
T4 Distortion Factor:
(30%) input.
(603 kHz) Less than
10%
High Range Sensitivity Max Output
1,400
kHz (1,404 kHz), 50 dB,
5
1,400 kHz vcs
Distortion Factor:
400 Hz (30%) input.
(1,404 kHz) Less than I
0%
6
Readjust in Steps 4 and
5.
NOTE: Digital display frequency +10.7 MHz means that when the display frequency of Digital Display is 100 MHz,
it should be adjusted to 110.7 MHz.
2) LW SECTION ADJUSTMENT (AA-R32L only) (Refer to Figs. 3-11, 12)
Step
Adjustment Adjustment
Result Remarks
Item
Point
Band
SW to LW.
1
LWOSC
T7
530 kHz ± 1 kHz
Connect TP5
to GND.
Connect a Frequency Counter
between TP2 and GND.
Low Range
Max Output
2
Sensitivity
TS Distortion Factor:
155 kHz, 50 dB, 400 Hz (30%) input.
155 kHz Less than I
0%
High Range Max Output
3
Sensitivity
VC6
Distortion Factor:
299 kHz,
50 dB, 400 Hz (30%) input.
299 kHz
Less than
10%
4
Readjust in Steps 2 and 3.
--------------SERVICE MANUAL AA-R32/L, AA-R42--------------
58

Akai AA-R22/L Specifications

General

Brand	Akai
Model	AA-R22/L
Category	Stereo Receiver
Language	English