— 5 —
Base Unit
Transmitter Section
Connection
Preset
Place the Base Unit in VCO/TX FREQ ADJ mode in accordance with the procedure on page 3.
Alignment Procedure
Step
Adjustment
Remarks
1
VR202
(TX Power)
Connect the Power Meter to the RF test point on the Base RF PCB. Adjust
VR202 for a
−
6.5 dBm reading on the Power Meter.
2
CT201
(TX Frequency)
Connect the Frequency Counter to the RF test point on the Base RF PCB.
Adjust CT201 to make sure that the frequency is 926.893873 MHz.
3
RT2
(TX Modulation)
Press the “2” key to enter the TEST Mode 2. Connect the AF Generator to
the TEL Line Jack on the Base Main PCB. Make sure that the output is 1
kHz 61.0 mV from the AF Generator.
Connect the Deviation Meter to the RF test point on the Base RF PCB.
Adjust RT2 to indicate
±
8 kHz Dev.
Alignment Point Location on Base Main PCB and Base RF PCB
Power
Meter
Frequency
Counter
Deviation
Meter
RF
Test Point
RF
Test Point
BASE RF PCB
RF
Test Point
J6
TEL Line
Jack
1kHz 61.0mV
AC
Adapter
AC 120V
60Hz
J2
DC IN
9V Jack
BASE MAIN PCB
AF GEN.
DC 9V
J6
TEL LINE Jack
J2
DC IN 9V Jack
Base Main PCB
RT2
RF TEST POINT
Base RF PCB
VR202
J201
CT201
Содержание FT-8508
Страница 1: ...SERVICE MANUAL PUBLISHED IN JAPAN Jun 1998 FILE NO 2B0 9804 FT 8508 CORDLESS TELEPHONE ...
Страница 3: ... 2 OPERATING CONTROLS BASE UNIT CONTROLS HANDSET CONTROLS RS YZ 1 2 ...
Страница 10: ...Handset Main 9 BLOCK DIAGRAMS ...
Страница 11: ...Handset RF 10 ...
Страница 12: ...Base RF 11 ...
Страница 13: ...Base Main 12 13 ...
Страница 14: ...SCHEMATIC DIAGRAMS Base Main 14 15 ...
Страница 15: ...Base RF 16 17 ...
Страница 16: ...Base Key 18 19 ...
Страница 17: ...Handset Main 20 21 ...
Страница 18: ...Handset RF 22 23 ...
Страница 36: ...Base Main 41 ELECTRICAL PARTS LOCATION ...
Страница 37: ...Base RF 42 ...
Страница 38: ...Base Key 43 ...
Страница 39: ...Handset Main 44 ...
Страница 40: ...Handset RF 45 ...
Страница 41: ...Base 46 WIRING DIAGRAMS ...
Страница 42: ...Handset 47 W501 W 072147 J502 JK 736 9P J601 IC603 PORTABLE RF B501 PE1294DA TOP VIEW SOLDERING ...
Страница 71: ...MECHANICAL PARTS LIST ...