3-6
TROUBLESHOOTING CHARTS
2.2
Troubleshooting Flow Chart for 40 W Transmitter (Sheet 3 of 3
)
No
Yes
Yes
No
Check Final PA Stage
PA_Bias
Voltage at
R134
RF Voltage
after C1044
>100mV?
Voltage
across R122
>2V?
RF Voltage
Q105 gate
>1V?
RF Voltage
Q100 gate
>7V?
Check components
between Q100 &
antenna connector
Replace Q100
Check FGU (U5301)
Check components
between C1044 &
C1117
Check components
between C117 &
Q105
Check components
between Q105 &
Q100
No
No
Yes
Yes
1-4V
Supply Voltage
Check components
between ASFIC &
Q100 before re-
placing Q100
RF Voltage
after C1044
>100mV?
Check Bias Tuning
before replacing
ASFIC U504
Yes
No
0V
Содержание cm200 Commercial Series
Страница 1: ......
Страница 2: ......
Страница 3: ...M CM200 CM300 PM400 Radios Detailed Service Manual 6881098C00 A ...
Страница 6: ...THIS PAGE INTENTIONALLY LEFT BLANK Notes ...
Страница 7: ...CM200 CM300 PM400 Radios Service Maintainability Issue November 2007 M ...
Страница 10: ...iv Notes ...
Страница 12: ...vi Notes ...
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 ...
Страница 351: ......
Страница 352: ......