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Receiver Section
Connections
Preset
a) Connect DC power supply to battery connector on the handset unit.
b) Turn the DC power supply ON while pressing " ∗ " and " # " keys, and keep pressing the keys continuously for
approximate 2 seconds.
c) Release keys when entering TEST mode 1 with TALK LED lighting and beep.
Alignment Procedure
step
Preset to
Adjustment
SG: 1mV
1
(Discriminator
No modulation
SG: 1mV
1 kHz ±8kHz
2
deviation
SG: -6.0 dBµV
1kHz ±8kHz
3
(SQ Point)
Deviation
Alignment Point Location on Handset Main PCB
HAND Main PCB
J601
HANDSET Unit
RF SG
RF
-
Test Point
+
DC Power Supply
J601
Battery
Connector
DC 3.8V
Press the 4 key to enter the TEST Mode 4. Connect the RF Singal
L615
Generator to the RF test point on the handset MAIN PCB. Make sure that
the frequency is 926.997467 MHz.
Voltage)
Connect the DC Voltmeter to the AF Terminal of RT603. Adjust L615 to
indicate DC 0.85 V.
Connect the RF Signal Generator to the RF test point on the handset MAIN
RT604
PCB. Make sure that the frequency is 926.997467 MHz.
(RX AF
Connect the AC Voltmeter across a 150-ohm dummy to the SP Terminal.
Voltage)
Adjust RT604 for a -19.0 dBV reading on the AC Voltmeter.
Press the 5 key to enter the TEST Mode 5. Make sure that the frequency
RT603
of RF SG output is 926.997467 MHz. Adjust RT603 to turn to the point
where the indication is just vibrated.
Dummy Load
(150-ohm)
SP
WHT
Terminal
BLK
DC Voltmeter
AF
Test Point
Remarks
AF Test Point
L615
RT603
RT604
— 7 —
AC Voltmeter
RF Test Point
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