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Receiver Section
Connections
Preset
a) Remove the solder on the pattern (refer to the illust. below).
b) Connect DC power supply to battery connector on the handset unit.
c) Turn the DC power supply ON while pressing "
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
Alignment Point Location on Handset Main PCB and Handset RF PCB
Handset PCB
RF SG
RF
-
Test Point
+
J603
DC Power Supply
Battery
Connector
DC 3.8V
Press the "4" key to enter the TEST Mode 4. Connect the RF Singal
L603
Generator to the RF test point on the handset MAIN PCB. Make sure that
the frequency is 926.495220 MHz.
Voltage)
Connect the DC Voltmeter to the Discriminator test point. Adjust L603 to
indicate DC 0.90 V.
HANDSET Unit
Discriminator
DC Voltmeter
Test Point
" and " # " keys, and keep pressing the keys continuously for
Remarks
Discriminator Test Point
RF PCB
L603
6
RF Test Point
Remove solder
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