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Base Main PCB
RF Test Point
J1
TEL LINE Jack
J2
DC IN 9V Jack
RT2
RT1
CT1
Alignment Point Location on Base Main PCB
ALIGNMENT PROCEDURE
Base Unit
Transmitter Section
Connections
Preset
Press and hold the “ANSWER” key about 5.0 seconds while turning the 7 SEG LED shows “8” .
Power
Meter
RF
Test Point
BASE Unit
J2
DC IN
9V Jack
1kHz -10.5dBm
AF GEN.
AC 120V
60Hz
Frequency
Counter
Deviation
Meter
RF
Test Point
J1
TEL Line
Jack
AC
Adapter
Alignment Procedure
step
1
2
3
Adjustment
RT1
(TX Power)
CT1
(TX Frequency)
RT2
(TX Modulation)
Remarks
Connect the Power Meter to the RF test point on the Base MAIN PCB.
Connect the Frequency Counter to the RF test point on the Base MAIN
PCB. Adjust CT1 to make sure that the frequency is 926.897468 MHz.
Press the “SKIP / FF” key to enter the TEST MODE “9”. Connect the AF
Generator to the TEL Line Jack on the Base Main PCB. Make sure that
the output is 1 kHz -10.5dBm from the AF Generator.
Connect the Deviation Meter to the RF test point on the Base MAIN PCB.
Adjust RT2 to indicate
±
8 kHz Dev.
Adjust RT1 for a -5.0dBm reading on the Power Meter.
Содержание FT-8901A
Страница 1: ...SERVICE MANUAL PUBLISHED IN JAPAN Oct 2001 FILE NO 2BO 200113 FT 8901A CORDLESS TELEPHONE ...
Страница 9: ...BLOCK DIAGRAMS Base Unit 8 ...
Страница 10: ... 9 Handset Unit ...
Страница 11: ...RF Section SCHEMATIC DIAGRAMS Base Unit 10 11 FT8901A Sche p65 01 10 15 10 42 Page 8 Adobe PageMaker 6 5J Win ...
Страница 12: ...Base Key Unit 12 13 FT8901A Sche p65 01 10 15 10 42 Page 9 Adobe PageMaker 6 5J Win ...
Страница 13: ...Handset Unit 14 15 RF Section FT8901A Sche p65 01 10 15 10 42 Page 10 Adobe PageMaker 6 5J Win ...
Страница 26: ... 28 Unit V Ref No Pin STBY TALK Note Note 61 2 9 2 9 IC608 62 2 9 2 9 63 2 9 2 9 64 2 9 2 9 ...
Страница 29: ... 31 ELECTRICAL PARTS LOCATION Base Unit Main PCB ...
Страница 30: ... 32 Base Unit Key PCB ...
Страница 31: ... 33 Handset Unit Main PCB ...
Страница 32: ... 34 WIRING DIAGRAMS Base Unit ...
Страница 33: ... 35 Handset Unit ...