4
Receiver Section
Connections
Alignment Point Location on Base Main PCB and Base RF PCB
Preset
a) Remove the solder on the pattern (refer to the illust. below).
b) Set the “TONE/PULSE” switch to PULSE.
c) Connect the AC adapter to the base unit while pressing the “PAGE” key, and keep pressing it continuously for
approximate 2 seconds.
d) Release the “PAGE” key when entering TEST mode 1 with IN USE/CHARGE LED lighting.
Alignment Procedure
step
1
Preset to
SG: 1mV
No modulation
Remarks
Press the “PAGE” key for 3 times to enter the TEST Mode 4. Connect the
RF Signal Generator to the RF test point on the Base MAIN PCB. Make
sure that the frequency is 903.417756 MHz.
Connect the DC Voltmeter to the Discriminator test point. Adjust L1 to
indicate DC 0.90 V.
Adjustment
L1
(Discriminator
Voltage)
RF
Test Point
AF
Terminal
J3
DC IN
9V Jack
AC 120V
60Hz
BASE Unit
-
+
RF SG
DC Voltmeter
AC
Adapter
L1
S2
T/P Switch
P
T
RF Test Point
J3
DC IN 9V Jack
J1
TEL LINE Jack
Base Main PCB
Remove solder
Discriminator Test Point
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: ......