6
Receiver Section
Connections
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
Preset to
SG: 1mV
No modulation
Remarks
Press the “4” key to enter the TEST Mode 4. Connect the RF Singal
Generator to the RF test point 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)
RF PCB
RF Test Point
L603
Handset PCB
RF
Test Point
Discriminator
Test Point
J603
Battery
Connector
RF SG
DC Power Supply
DC Voltmeter
HANDSET Unit
-
+
DC 3.8V
Discriminator Test Point
Remove solder
Содержание FD-4809
Страница 1: ...CORDLESS TELEPHONE PUBLISHED IN JAPAN Nov 1999 SERVICE MANUAL FILE NO 2B0 9909 FD 4809 ...
Страница 8: ...7 BLOCK DIAGRAMS Base Unit ...
Страница 9: ...8 Handset ...
Страница 10: ...9 10 SCHEMATIC DIAGRAMS Base Unit ...
Страница 11: ...11 12 Handset ...
Страница 25: ...26 ELECTRICAL PARTS LOCATION Base Unit Main PCB ...
Страница 26: ...27 Handset Main PCB ...
Страница 27: ...28 WIRING DIAGRAMS Base Unit ...
Страница 28: ...29 Handset ...
Страница 31: ...32 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 23 ...
Страница 47: ......