Akai AA-V29DPL - Measurements and Adjustments

III . MEASUREMENTS AND ADJUSTMENTS
■ ALIGNMENT INSTRUTIONS
EQUIPMENT NEEDED:
AM Signal Generator
FM Signal Generator
Oscilloscope
VTVM (AC.DC)
Test loop antenna (AM Adjustment)
Dummy antenna (FM Adjustment)
Stereo signal modulator (RDS IN)
IMPORTANT
1. Check power-source voltagd.
2. Set the function switch to band aligned.
3.
Keep the signal Input as low as possible to adjust accurately.
4. Modulation and modulation frequency.
~
Modulation
Modu lation frequency
d
AM
30%
400Hz
FM
100% (75KHz Dec.I
400Hz
1. TUNING FREQUENCY RANGE ADJUSTMENTS
(FM.AM) DC VOLTMETER ......... CONNECT TO TEST POINT TP54 ANO GND
UNIT
FM
l>M
GNO
11'54
GNO
OCEVM .
I 1"7'--1
~
NO Band
Frequency
1 FM
87,50MHz
2
- AM
522KHz
2. AM TRACKING ADJUSTMENT
AM-SG
Signal Generator ........• Connects to the AM ANT . Coil through the loop antenna .
Adjust for the Indication or VTVM or the wave form scope to be maximum.
AC EVM OSCllOGCOPE
Band
Step Frequency
Adjust for
1.5V
1V
Adjust for
!1"7'--1
l"'-'I 8
!r><.!I ml □
llilllD
0000
1 612KHz I Maximum sensitivity
IIIII
000
Cul
00
AM 2 15031<1-tz I Maximum sensitivity
Adjustment
l7
l502
Adjustment
L501,L502
CT51
I l I ' ~
~
3 Repeat steps 1 and 2 several times
AM _u:x:,p a,tonno
1
.~
-~-
I -
.!!,
--
6
SERVICE IVANUAL
•