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
Содержание FT-8859
Страница 2: ...CORDLESS TELEPHONE SERVICE MANUAL FILE NO 2B0 9907 FT 8859 PUBLISHED IN JAPAN Oct 1999 ...
Страница 11: ...9 BLOCK DIAGRAMS Base Unit ...
Страница 12: ...10 Handset Unit ...
Страница 13: ...11 12 SCHEMATIC DIAGRAMS Base Unit Main ...
Страница 14: ...13 Base Unit Key NOTES 1 RESISTANCE VALUES ARE SHOWN IN OHMS UNLESS OTHERWISE NOTED K KIRO OHM M MEG OHM ...
Страница 15: ...14 15 Handset ...
Страница 30: ...30 ELECTRICAL PARTS LOCATION Base Unit Main PCB ...
Страница 31: ...31 Base Unit Key PCB ...
Страница 32: ...32 Handset Main PCB ...
Страница 33: ...33 34 WIRING DIAGRAMS Base Unit ...
Страница 34: ...35 Handset ...
Страница 35: ...36 EXPLODED VIEWS AND MECHANICAL PARTS LIST Base Unit SPEAKER KEY PCB RF MODULE BASE MAIN PCB ANTENNA ...
Страница 37: ...38 Handset 7 8 4 15 1 16 17 18 17 5 10 22 11 21 12 20 2 9 6 19 13 14 3 17 RF MODULE HANDSET MAIN PCB ASSY ...
Страница 57: ......