Toshiba FT-8989 Service Manual page 10

Receiver Section
Connections
Preset
Place the Handset in RX SENS mode (step 4) in accordance with the procedure on page 4.
Alignment Procedure
step Preset to Adjustment
SG: 1mV
1 (Discriminator
No modulation
SG: 1mV
1 kHz ±8kHz
2
deviation
SG: -6.0 dBµ µ µ µ µ V
3
No moduration (SQ Point)
Alignment Point Location on Handset Main PCB and Handset RF PCB
Handset PCB
HANDSET Unit
RF SG
RF
-
Test Point
+
DC Power Supply J603
Battery
Connector
DC 3.8V
Connect the RF Singal Generator to the RF test point on the handset MAIN
L603
PCB. Make sure that the frequency is 926.997467 MHz.
Connect the DC Voltmeter to the Discriminator test point. Adjust L603 to
Voltage)
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 35 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.
J603
Dummy Load
(150-ohm)
SP
-
Connector
+
AF DC Voltmeter
Terminal
Remarks
Discriminator Test Point
RT602
RT601
L603
8
AC Voltmeter
RF Test Point
RF PCB