Troubleshooting Flow Chart for Receiver RF (Sheet 1 of 2)
3-3
1.1
Troubleshooting Flow Chart for Receiver (Sheet 2 of 2)
3V
(IFIC -Vcc)
OK ?
Installation
OK ?
Yes
Yes
No
No
A
From
Check visually
FE and BE
components
installation ?
Inject - 40dBm (CW)
to RF connector
Check Power on
C335 (UHF) C332 (VHF)
RF
Power
> -28 dBM
?
Yes
No
Check Power on
C337 (UHF),
C336 (VHF)
Go to
DC Section
Check
the component
FE Problem
Replace
Q303, Q301
Check passive
components
RF
Power
> -28 dBM
?
Yes
No
Replace
Q305, Q300, U302
Check passive
components
Check Y301
44.395 MHz
Y301
OK
?
Yes
No
Replace Q302, Y300
Check D301 - 304
Replace Y301
3V to
U301
OK
?
Yes
No
Replace U300
Go to DC Section
Summary of Contents for cm200 Commercial Series
Page 1: ......
Page 2: ......
Page 3: ...M CM200 CM300 PM400 Radios Detailed Service Manual 6881098C00 A ...
Page 6: ...THIS PAGE INTENTIONALLY LEFT BLANK Notes ...
Page 7: ...CM200 CM300 PM400 Radios Service Maintainability Issue November 2007 M ...
Page 10: ...iv Notes ...
Page 12: ...vi Notes ...
Page 16: ...1 4 INTRODUCTION Notes ...
Page 24: ...2 8 MAINTENANCE Notes ...
Page 27: ...CM200 CM300 PM400 Radios Control Head Service Information Issue November 2007 M ...
Page 32: ...1 2 OVERVIEW Notes ...
Page 46: ...4 2 CONTROLHEAD PCB SCHEMATICS PARTS LISTS Notes ...
Page 53: ...CM200 CM300 PM400 Radios UHF2 438 470 MHz 1 25 W Service Information Issue November 2007 M ...
Page 58: ...vi Notes ...
Page 62: ...1 4 MODEL CHART AND TECHNICAL SPECIFICATIONS Notes ...
Page 96: ...4 2 UHF2 PCB SCHEMATICS PARTS LISTS Notes ...
Page 151: ...CM200 CM300 PM400 Radios UHF2 438 470 MHz 25 40 W Service Information Issue November 2007 M ...
Page 156: ...vi Notes ...
Page 160: ...1 4 MODEL CHART AND TECHNICAL SPECIFICATIONS Notes ...
Page 194: ...4 2 UHF2 PCB SCHEMATICS PARTS LISTS Notes ...
Page 222: ...4 30 UHF 25 40 W Band 2 PCB 8486577Z01 Schematics Notes ...
Page 250: ...4 58 UHF 25 40 W Band 2 PCB 8486577Z03 Schematics Notes ...
Page 251: ...CM200 CM300 PM400 Radios UHF3 465 495 MHz 25 40 W Service Information Issue November 2007 M ...
Page 256: ...vi Notes ...
Page 260: ...1 4 MODEL CHART AND TECHNICAL SPECIFICATIONS Notes ...
Page 294: ...4 2 UHF3 PCB SCHEMATICS PARTS LISTS Notes ...
Page 322: ...4 30 UHF 25 40 W Band 3 PCB 8486577Z01 Schematics Notes ...
Page 350: ...4 58 UHF 25 40 W Band 3 PCB 8486577Z03 Schematics Notes ...
Page 351: ......
Page 352: ......