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Receiver Section
Connections
Preset
a) Connect the handset RF unit to the handset main unit.
b) Connect DC power supply to battery connector on the handset unit.
c) Turn the DC power supply on while pressing " ∗ " and " # " keys, and keep pressing the keys continuously for
approximate 2 seconds.
d) Release keys when entering TEST mode 1 with 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 and Handset RF PCB
Handset PCB
J603
HANDSET Unit
RF SG
RF
-
Test Point
+
DC Power Supply
J603
Battery
Connector
DC 3.8V
Press the 4 key to enter the TEST Mode 4. Connect the RF Signal
L603
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 Discriminator test point. Adjust L603 to
indicate DC 0.85 V.
Connect the RF Signal Generator to the RF test point on the handset MAIN
RT602
PCB. Make sure that the frequency is 926.997467 MHz.
(RX AF
Connect the AC Voltmeter across a 150-ohm dummy to the MIC Connector.
Voltage)
Adjust RT602 for a 80 mV reading on the AC Voltmeter.
Press the 5 key to enter the TEST Mode 5. Make sure that the frequency
RT601
of RF SG output is 926.997467 MHz. Adjust RT601 to turn to the point
where the Ringer just beeps.
Dummy Load
(150-ohm)
SP
-
Connector
+
DC Voltmeter
AF
Terminal
Remarks
Discriminator Test Point
RT601
RT602
L603
— 7 —
AC Voltmeter
RF Test Point
RF PCB
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