Motorola ASTRO XTS 2500 - DC Supply Fail Troubleshooting Chart (2 of 3)

6816985H01-B August 16, 2007
UHF1 Troubleshooting Charts: DC Supply Fail Troubleshooting Chart (2 of 3) 6.2-7
6.2.8 DC Supply Fail Troubleshooting Chart (2 of 3)
Check voltage VCC5 at
L705
Voltage
=5V
+/- 5%
Check voltage at C517
Yes
No
Voltage
=7.5V
Voltage
=3.0V
+/-5%
Replace U701
Yes
No
Check voltage RFSW_B+
at C730
No
Yes
3
Restart from Chart 6.7
Check U502 and D513,
replace it if necessary
Problems
solve?
End
Yes
No
Replace Q703
4