Sanyo FXR-110GD Service Manual page 2

ALIGNMENT PROCEDURES
FM ALIGNMENT
Power Supply Dc 14.4V
Sianal frenerator output :
M;dula;ion frequency : 400 HZ(MW) :
1
kHz
(FM)
Modulation percentage 30%
22.5kHz (FM)
.
Reference output
500m W
.
Signal Generator output level is in EMF.
.
Signal application :
Antenna receptacle through the dummy antenna
. Output meter connection :Across apeakeror dummy load (40hms)
.
Location of the components for alignment are ahown in main part
identification illustration.
MW RF ALIGNMENT
T
Stap Si nal
1 MW
T
2
~
Through
3
Dummy
ANT
(Fig.1)
4
'requency Dial Set Teat Equipment
Adjustment
522kHz Connect a DC
Adjust T8 for
voltmeter to TP1 voltage to be
& common GND
1 .2V
603kHz 603kHz Connect VTVM to
Tune T1 ,T3 RF
output terminal
coil for
maximum
output
999kHz 999kHz Connact VTVM to
Tune T5, IF coil
output terminal
for maximum
output
999kHz 999kHz TP5 through 10K
Adjust SVR2
30dBK resistor to 5V.
between 2.5V to
Connect a voltaga 4.5V
meter to TP2 and
ground
Rsg : Intarnal reaiatanca of a signal generator
1-
—— ——
I
Rsg
-'?
RI 15pF
STANDARD '
I
SIGNAL
o
I*
6opF -
T
R1 =80–Rsg
GENERATOR I
I
1-
!0
—— ——
Fig. 1 Dummy Antenna for MW Alignment
Rsg : Internal rasiatance of a signal generator (50fl)
Ah&
Vvv
Vvv
o
I
Rsg
Y
250hm
STANDARD I
I
SIGNAL
1?
IN
GENERATOR
I
LL–4
o
;tep Signal Frequency Dial Teat Equipmant Adjustment
-
Input of signal
Setting Connection
Generator of Radio
1
106.OMHZ Connect DC Adjust L705 to
voltmeter to 7.6V
TP1 & GND
2
90.00MHZ 90.00 MHZ Connect VTVM Adjust T701 for
to speaker maximum
output output (1.F.)
3
Through
90.00 MHZ 90.00 MHZ
Adjust L701 .703
Dummy
& 704 for
ANT
maximum output
—
f
4 R
(Fig. 2)
5
98.00 MHz
60dBp
6 98.00MHz
21dB~
:paat the s
96.00 MHz
98.00 MHz
p 2 until maximum output
Connect a DC Adjust T6 to
Voltmeter OV * 20mV
between TP3
and TP4
TP5 through Adjust SVR1 to
10K raaiator to HIGH !5V)
5V.Connect a
voltage meter
to TP2 and
ground
Nota :
Open the L703 first, adjust T701, then adjust L701, L703 and L704.
ALIGNMENT OF TAPE SPEED
1.
Insart 3kHz (MTT-1 11) standard taat tape and set the unit at play mods.
2. Connect the Wow and Flutter Metar to apaaker output.
3. Turn the spaad adjustment screw to get 3000 t 30 Hz.
ALIGNMENT OF HEAD AZIMUTH
1.
Insert a 10kHz (MTT255J) standard teat and set the unit in play mode.
2. Tune the azimuth adjusting screw until you obtain maximum reading for
both channel on the VTVM.
SPEED ADJUSTMENT SCREW
CASSEITE
MECHANISM
~
@
+
1
AZIMUTH ADUSTMENT SCREW
—
Fig. 2 Dummy Antenna for FM Alignment
–l–