Motorola APX 7000 - Page 121

Troubleshooting Charts: DC Supply Failure 5-17
5.4.3 DC Supply 1.8 Volt Failure
Yes
Remove shield SH14
Check voltage Pin B2 of
U202 Via C210
Voltage 1.8V
Yes
No
Check Voltage Pin A2 of
U202 Via C209
Voltage 2.775V
Replace U202
No
Check for open in the
branch, to the section you
are troubleshooting.
Check 40 Pin connector
P101 to J1001 Pin 8 for an
open
Yes
Refer to Vocon
troubleshooting guide for
the 2.775 LD06 supply.
Open found?
No
Replace 40 Pin
connector