Motorola i897 - DC Distribution (VUSB) Test

TROUBLESHOOTING: DC Distribution (SW1) Test
3.22 DC Distribution (VUSB) Test
Use this test on a unit with the following symptom: no VUSB (3.3 Vdc).
No
Check C717
for 3.3 Vdc.
Check for US, DFP, etc.
Repair, as necessary.
Go to
FILT_B+
flowchart.
Is
3.3 Vdc
present at
the parts
?
Yes
Check FILT_B+
(3.6 Vdc)
at C900 or C901.
Is
3.6 Vdc
present
?
No
Yes
Replace U700B7
ROADRUNNER
104
6880401P59-O