Motorola Radius CM300 User Manual

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

Motorola Radius CM300 Specifications

General

Brand	Motorola
Model	Radius CM300
Category	Radio
Language	English