7
Handset Unit
Transmitter Section
Connection
Preset
a) Connect the handseet 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 beep.
Alignment Procedure
Alignment Point Location on Handset Main PCB and Handset RF PCB
step
Adjustment
Remarks
1
RT501
(TX Power)
Connect the RF power Meter to the RF test point on the handset MAIN PCB.
Adjust RT501 for a -7dBm reading on the Power Meter.
2
CT601
(TX Frequency)
Connect the Frequency Counter to the RF test point on the handset MAIN
PCB. Adjust CT601 to make sure that the frequency is 903.052467 MHz.
3
RT603
(TX Modulation)
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 RT603 to indicate ±8 kHz Dev.
RF
Test Point
J603
Battery
Connector
HANDSET Unit
AF GEN.
DC Power Supply
DC 3.8V
1kHz 9mV
RF
Test Point
Power
Meter
MIC+Pin
Frequency
Counter
Deviation
Meter
Handset PCB
RF Test Point
RT501
CT601
J603
RT603
MC601
RF PCB
Summary of Contents for FT-8859
Page 2: ...CORDLESS TELEPHONE SERVICE MANUAL FILE NO 2B0 9907 FT 8859 PUBLISHED IN JAPAN Oct 1999 ...
Page 11: ...9 BLOCK DIAGRAMS Base Unit ...
Page 12: ...10 Handset Unit ...
Page 13: ...11 12 SCHEMATIC DIAGRAMS Base Unit Main ...
Page 15: ...14 15 Handset ...
Page 30: ...30 ELECTRICAL PARTS LOCATION Base Unit Main PCB ...
Page 31: ...31 Base Unit Key PCB ...
Page 32: ...32 Handset Main PCB ...
Page 33: ...33 34 WIRING DIAGRAMS Base Unit ...
Page 34: ...35 Handset ...
Page 57: ......
