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Receiver Section
Connection
RF SG
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 TALK LED lighting and beep.
Alignment Procedure
Step
Preset to
Adjustment
SG: 1 mV
1
(Discriminator
No modulation
SG: 1 mV
1 kHz ±8 kHz
2
deviation
SG: −6.5 dBµV
1 kHz ±8 kHz
3
(SQ Point)
deviation
Alignment Point Location on Handset Main PCB and Handset RF PCB
Handset Main PCB
HANDSET RF PCB
HANDSET MAIN PCB
−
J603
RF
Battery
+
Test Point
Connector
DC Power Supply
DC 3.8V
Press the "4" key to enter the TEST Mode 4. Connect the RF Signal
L512
Generator to the RF test point on the handset RF PCB. Make sure that
the frequency is 926.994344 MHz.
Voltage)
Connect the DC Voltmeter to the J601 AF test point. Adjust L512 to
indicate DC 0.85 V.
Connect the RF Signal Generator to the RF test point on the handset RF
VR602
PCB. Make sure that the frequency is 926.994344 MHz.
(RX AF
Connect the AC Voltmeter across a 150-ohm dummy to the MIC
Output)
Connector. Adjust VR602 for a 155 mV reading on the AC Voltmeter.
Press the "5" key to enter the TEST Mode 5. Make sure that the
VR501
frequency of RF SG output is 926.994344 MHz. Adjust VR501 to turn to
the point where the indication is just vibrated.
AF TEST POINT
VR602
J603
Battery
Connector
Dummy Load
(150-ohm)
J602
−
SP
Connector
+
J1
DC Voltmeter
AF Terminal
Remarks
RF PCB
J502
Connector
VR501
L512
— 5 —
AC Voltmeter
RF TEST POINT
J602
SP
J501
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