Motorola APX 5000 Service Manual page 126

5-20
5.4.6 DC Supply 1.5 Volt Failure
Remove shield SH2B
Check voltage Pin A3 of
U203 Via C212
Voltage 1.5V
Yes
Check for open in the
branch, to the section you
are troubleshooting.
No
Check Voltage Pin A1 of
U203 Via C210
Yes
Voltage 1.8V
No
Refer to the RF Board DC
Supply 1.8 Volt Failure
troubleshooting guide
Troubleshooting Charts: DC Supply Failure
Check Pin C3 and Pin C1
of U203 Via C209
Yes
Voltage 3V Replace U203
No
Refer to the RF Board.
DC Supply 3 Volt failure.