6
Receiver Section
Connections
Alignment Point Location on Handset Main PCB and Handset RF PCB
Preset
1) Remove the solder on the pattern (refer to the illust. below).
2) Connect DC power supply to battery connector on the handset unit.
3) Turn the DC power supply ON while pressing “
∗∗∗∗∗
” and “ # “ keys, and keep pressing the keys continuously for
approximate 2 seconds.
4) Release keys when entering TEST mode 1 with beep.
Alignment Procedure
Test Point
(J601)
Discriminator
Test Point
Battery
Connector
RF SG
DC Power Supply
DC Voltmeter
HANDSET Unit
-
+
DC 3.8V
RF PCB
Test Point (J601)
L603
Handset PCB
Discriminator Test Point
step
1
Preset to
SG: 1mV
No modulation
Remarks
Press the “4” key to enter the TEST Mode 4. Connect the RF Signal
Generator to the test point (J601) on the handset MAIN PCB. Make sure
that the frequency is 926.495220 MHz.
Connect the DC Voltmeter to the Discriminator test point. Adjust L603 to
indicate DC 0.90 V.
Adjustment
L603
(Discriminator
Voltage)
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: ......