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 “PAGE” 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 78 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
J3
TEL Line
Jack
1kHz 45mV
AC
Adapter
AC 120V
60Hz
J2
DC IN
9V Jack
BASE MAIN PCB
AF GEN.
DC 9V
J3
TEL LINE Jack
Base Main PCB
J2
DC IN 9V Jack
S2
T/P Switch
T
P
RT2
CT201
VR202
J201
RF TEST POINT
Base RF PCB
Summary of Contents for FT-8808
Page 1: ...SERVICE MANUAL PUBLISHED IN JAPAN Oct 1998 FILE NO 2B0 9810 FT 8808 CORDLESS TELEPHONE ...
Page 10: ... 9 BLOCK DIAGRAMS Base Main ...
Page 11: ... 10 Base RF ...
Page 12: ... 11 Handset Main ...
Page 13: ... 12 Handset RF ...
Page 14: ...SCHEMATIC DIAGRAMS Base Main 13 14 ...
Page 15: ...Base RF 15 16 ...
Page 16: ...Handset Main 17 18 ...
Page 17: ...Handset RF 19 20 ...
Page 34: ... 37 ELECTRICAL PARTS LOCATION Base Main ...
Page 35: ... 38 Base RF ...
Page 36: ... 39 Handset Main ...
Page 37: ... 40 Handset RF ...
Page 38: ... 41 WIRING DIAGRAM Handset ...