3-4
TROUBLESHOOTING CHARTS
2.0
Troubleshooting Flow Chart for 40 W Transmitter (Sheet 1 of 3)
START
Yes
No
Check components between
Q100 and RF output,
Antenna Switch D104,
D103, VR102 and Q106
No or too low power when keyed
Current
increase when
keyed?
Check power settings, tuning
& components between U103
Pin 3 and ASFIC Pin 6 before
replacing ASFIC
Control
Voltage at
TP150
>4Vdc?
Check PA
Stages
>4A
Voltage U103
pin 5 =
4.7V?
U103 Pin 3
<1.6Vdc
U100 Pin 3
>1.8Vdc
Check 9.3V
Regulator
U501
Yes
Yes
No
No
Yes
Check
U103
Check forward
Power Sense
Circuit
No
Short U100
Pin 3 to
ground
Voltage at
TP150 rises?
Check PA
Stages
Check Forward
Power Sense
Circuit
Yes
No
>500mA & <4A
<500mA
Содержание cm200 Commercial Series
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Страница 3: ...M CM200 CM300 PM400 Radios Detailed Service Manual 6881098C00 A ...
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Страница 7: ...CM200 CM300 PM400 Radios Service Maintainability Issue November 2007 M ...
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Страница 16: ...1 4 INTRODUCTION Notes ...
Страница 24: ...2 8 MAINTENANCE Notes ...
Страница 27: ...CM200 CM300 PM400 Radios Control Head Service Information Issue November 2007 M ...
Страница 32: ...1 2 OVERVIEW Notes ...
Страница 46: ...4 2 CONTROLHEAD PCB SCHEMATICS PARTS LISTS Notes ...
Страница 53: ...CM200 CM300 PM400 Radios UHF2 438 470 MHz 1 25 W Service Information Issue November 2007 M ...
Страница 58: ...vi Notes ...
Страница 62: ...1 4 MODEL CHART AND TECHNICAL SPECIFICATIONS Notes ...
Страница 96: ...4 2 UHF2 PCB SCHEMATICS PARTS LISTS Notes ...
Страница 151: ...CM200 CM300 PM400 Radios UHF2 438 470 MHz 25 40 W Service Information Issue November 2007 M ...
Страница 156: ...vi Notes ...
Страница 160: ...1 4 MODEL CHART AND TECHNICAL SPECIFICATIONS Notes ...
Страница 194: ...4 2 UHF2 PCB SCHEMATICS PARTS LISTS Notes ...
Страница 222: ...4 30 UHF 25 40 W Band 2 PCB 8486577Z01 Schematics Notes ...
Страница 250: ...4 58 UHF 25 40 W Band 2 PCB 8486577Z03 Schematics Notes ...
Страница 251: ...CM200 CM300 PM400 Radios UHF3 465 495 MHz 25 40 W Service Information Issue November 2007 M ...
Страница 256: ...vi Notes ...
Страница 260: ...1 4 MODEL CHART AND TECHNICAL SPECIFICATIONS Notes ...
Страница 294: ...4 2 UHF3 PCB SCHEMATICS PARTS LISTS Notes ...
Страница 322: ...4 30 UHF 25 40 W Band 3 PCB 8486577Z01 Schematics Notes ...
Страница 350: ...4 58 UHF 25 40 W Band 3 PCB 8486577Z03 Schematics Notes ...
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