Motorola APX 3000

5-8 Troubleshooting Charts: Power-Up Failure
Power-Up Failure – Low LDO8 V_5.0A Voltage
Low
LDO8 V_5.0A
Voltage
Measure Radio
Current
Inspect R6565
Connection
Measure Voltage
at C6593
Likely MAKO Problem,
Replace Main Board
Is Standby Current
more than 15mA
above Average
6.0 < V < 9.0?
Is R6565
Soldered
Properly
Correct R6565
Soldering
Proceed to
Incorrect B+
Voltage Flow
Chart
Board has a short,
Replace Main Board
Yes
Yes
Yes
No
No
No