Alignment Procedure - Toshiba FT-7007LR Service Manual

Base Unit / Transmitter
Test Equipment Required and Connections
• Oscilloscope
• Frequency Counter
AC Adapter
(120V 60Hz)
Preset
a) Set T/P SW to Pulse Mode.
b) Turn on AC power while the Page key is being depressed.
c) Release the Page key 2 seconds later, then the TX Mode is entered (CH21).

Alignment Procedure

Step Adjustment
Connect the oscilloscope across a 50-ohm load to RF test point.
1 L8 Set the digital voltmeter at the test point of TX VCO.
Adjust L8 to indicate DC 2.8V ±0.05V.
Connect the frequency counter across a 50-ohm dummy load to RF test point. Make
!
2
sure that the frequency is 46.770 MHz ±1500Hz.
Alignment Point Location on Main PCB
ALIGNMENT PROCEDURE
• Dummy Load, 50-ohm
• AC Power Supply : 120V, 60Hz (With AC Adapter)
BASE Unit
Dummy Load
(50-ohm)
RF Test
Point
Oscilloscope
3
Frequency Counter
Digital Voltmeter
TX VCO
Test Point
Remarks
RF Test Point TX VCO Test Point
L8
P
S1
T
T/P SW