Toshiba FT-8939 Service Manual page 9

Handset Unit
Transmitter Section
Connection
Power
Meter
Frequency
Counter
Deviation
Mater
Preset
Place the Handset in VCO/TX FREQ. ADJ mode in accordance with the procedure on page 4.
Alignment Procedure
step Adjustment
RT501
1
(TX Power)
CT401
2
(TX Frequency)
RT403
3
(TX Modulation)
Alignment Point Location on Handset Main PCB and Handset RF PCB
Handset PCB
MC401
RF
HANDSET Unit
Test Point
J401
Battery
MIC+Pin
Connector
RF
Test Point
Connect the RF power Meter to the RF test point on the handset MAIN PCB.
Adjust RT501 for a -7.5dBm reading on the Power Meter.
Connect the Frequency Counter to the RF test point on the handset MAIN
PCB. Adjust CT401 to make sure that the frequency is 903.052467 MHz.
Press the "2" key to enter the TEST Mode 2. Connect the AF Generator to
the MIC Connector. Make sure that the output is 1kHz 9mV from the AF
Generator.
Connect the Deviation Meter to the RF test point on the handset MAIN PCB.
Adjust RT403 to indicate ±8 kHz Dev.
J401
RT403
7
AF GEN.
1kHz 9mV
DC Power Supply
DC 3.8V
Remarks
RF Test Point
RF PCB
RT501
CT401