— 5 —
HANDSET / TRANSMITTER
Test Equipment Required and Connections
•
DC Power Supply, 3.6V
•
Digital Voltmeter
Alignment Procedure
Step
Adjustment
Remarks
1
L509
Set the digital voltmeter at the test point of TX VCO, then adjust L509 to
indicate DC 2.0 V
±
0.05 V at CH21.
2
Connect the frequency counter across a 50-ohm dummy load to RF test
point. Make sure that the frequency is 49.830 MHz
±
1500 Hz.
Alignment Point Location on Main (Handset Unit) PCB
Preset
Turn Power on while depressing “ ” and “#” keys. A beep will be heard. Then the TX Mode is entered (CH21).
Handset Unit
Batt Terminal
DC Power Supply
3.6V
-
+
Dummy Load
(50-ohm)
Frequency Counter
Digital Voltmeter
TX VCO
Test Point
RF Test Point
J501
Battery
Terminal
L504
L509
RF
Test Point
TX VCO
Test Point
Содержание FT-7807R
Страница 1: ...CORDLESS TELEPHONE SERVICE MANUAL PUBLISHED IN JAPAN Jun 1998 FT 7807R FILE NO 2B0 9803 ...
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Страница 10: ... 9 10 SCHEMATIC DIAGRAMS TEST POINT RF TEST POINT RX VCO TEST POINT TX VCO TEST POINT Discriminator ...
Страница 11: ... 11 12 TEST POINT RF TEST POINT RX VCO TEST POINT Discriminator TEST POINT TX VCO ...
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Страница 29: ... 30 EXPLODED VIEW AND MECHANICAL PARTS LIST Base Unit ...
Страница 31: ... 32 Handset ...
Страница 52: ...MECHANICAL PARTS LIST ...