Power-Up Failure - Motorola APX 7000 Detailed Service Manual

5-4
Power-Up Failure – B+ Incorrect Voltage
B+ Incorrect Voltage
Check Voltage at
Test Point
F_UNSW_B+
(VOCON)
6 < V < 9?
Yes
Check Voltage at
R6505 (VOCON)
6 < V < 9?
Yes
Replace VOCON
Board
Check Mating
No
Connector to RF
Board
Check Q6501
No
Circuit and
Replace any non
Functional Parts
Troubleshooting Charts: Power-Up Failure
No
RF to Vocon
Connectors
ok?
Yes
Replace RF
Board, Check
F_UNSW_B+ Test
Point
Replace RF Board
Replace
Connector
No
Replace VOCON
6 < V < 9?
Board
Yes