5
Handset Unit
Transmitter Section
Connection
Alignment Point Location on Handset Main PCB and Handset RF PCB
Preset
a) Remove the solder on the pattern (refer to the illust. below).
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
step
1
2
Adjustment
VR502
Remarks
Connect the Spectrum Analyzer to test point (J601).
Adjust VR502 so that the power instructions of the Spectrum analyzer reaches
-4.0 dBm.
Then comfirm the frequency is 903.617561 MHz.
Press the “3” key and connect the FM Deviation Meter to test point (J601).
Confirm the deviation is 23 ~ 46 kHz.
VR502
Test Point (J601)
RF PCB
Handset PCB
Handset Unit
3.8V
Spectrum Analyzer
FM Deviation Meter
Test
Point
(J601)
Batt
Connector
DC Power Supply
Remove solder
Summary of Contents for FD-9839
Page 2: ...CORDLESS TELEPHONE SERVICE MANUAL FILE NO 2B0 9911 FD 9839 PUBLISHED IN JAPAN Dec 1999 ...
Page 9: ...7 BLOCK DIAGRAMS Base Unit Main ...
Page 10: ...8 Base Unit Key ...
Page 11: ...9 Handset ...
Page 12: ...10 11 SCHEMATIC DIAGRAMS Base Unit Main ...
Page 13: ...12 13 Base Unit Key ...
Page 14: ...14 15 Handset ...
Page 33: ...34 ELECTRICAL PARTS LOCATION Base Unit Main PCB ...
Page 34: ...35 Base Unit Key PCB ...
Page 35: ...36 Handset Main PCB ...
Page 36: ...37 38 WIRING DIAGRAMS Base Unit ...
Page 37: ...39 Handset ...
Page 64: ......