Motorola APX 5000 Service Manual page 114

5-8
Power-Up Failure – Low LDO8 V_5.0A Voltage
Low LDO8 V_5.0A
Voltage
Measure Radio
Current
Is Standby
Yes
Current more
than 15mA above
Average
No
Inspect R6565
Connection
Is R6565
No
Soldered
Properly
Yes
Measure Voltage
at C6593
No
6 < V < 9?
Yes
Likely MAKO
Problem, Replace
VOCON Board
Troubleshooting Charts: Power-Up Failure
Board has a short,
Replace VOCON
Correct R6565
Soldering
Proceed To
Incorrect B+
Voltage Flow
Chart