Toshiba FT-8509 Service Manual page 10

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 key 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: 1mV
1
(Discriminator
No modulation
SG: 1mV
2 1kHz ±8kHz
Deviation
SG: -7dBµV
3
1kHz ±8kHz
(SQ Point)
Deviation
Alignment Point Location on Handset Main PCB and Handset RF PCB
Handset PCB
RF SG
DC Power Supply
DC 3.8V
Press the "4" key to enter the TEST Mode 4. Connect the RF Signal
L402 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 test point. Adjust L402 to indicate
DC 1.00 V.
Connect the RF Signal Generator to the RF test point on the handset
RT402
MAIN PCB. Make sure that the frequency is 926.997467 MHz.
(RX AF
Connect the AC Voltmeter across a 150-ohm dummy to the MIC
Voltage)
Connector. Adjust RT402 for a 128 mV reading on the AC Voltmeter.
Press the "5" key to enter the TEST Mode 5. Make sure that the frequency
RT401
of RF SG output is 926.997467 MHz. Adjust RT401 to turn to the point
where the bell rings.
J401
HANDSET Unit
Dummy Load
(150-ohm)
RF
- SP -
Test Point
Connector
+ +
AF
J401
Terminal
Batter
Terminal
Remarks
L402
RT402
RT401
AF TEST POINT
8
AC Voltmeter
DC Voltmeter
RF TEST POINT
RF PCB