Motorola APX 3000 Detailed Service Manual page 109

Troubleshooting Charts: DC Supply Failure
5.4.5 DC Supply 1.8 Volt Failure
DC_LIN_1_8V
Verify DC_LIN_1_8V at C210
Voltage
= 1.8V?
Yes
Check for open in branch
to troubleshooting
section
No
Check voltage at C209
Voltage
2.775V?
No
Check voltage at R6564
Voltage
2.775V?
No
Replace MAKO
Yes
Replace U202
Yes
Check continuity between
R6564 and C209
5-19