Model No: M150 Plus
Customer: INTEK Rev No: A
7
No modulation
• Defective microphone. •
Poor audio output and
defective modulation microphone amplifier
components (IC3). • Defective microphone
connector components. • Defective ALC circuit
D8,D9
•
Replace • Replace the
defective components. •
Replace • Replace the
defective components.
LCD meter does
not work
•
Defective D11,D22 • Defective IC5. • Defective
RV2.RV6
•
Replace • Replace •
Replace
LCD display does
not work
•
Defective RED wire fuse. • Defective IC5, .
•
Replace • Replace
Channel selector
does not work
•
Defective IC5.
•
Replace
EMG CH9.19
does not work
•
Defective EMG SW. • Defective IC5.
•
Replace • Replace
TEST EQUIPMENT SETUP
A.
TX test equipment setup:
Spectrum Power
Analyzer Supply
Modulation Wattmeter Radio
Meter 10W U.U.T.
Oscilloscope Frequency Audio Gen.
Counter
Distortion AC
Meter Voltmeter
