Motorola i897 - DC Distribution (SW1) Test

TROUBLESHOOTING: DC Distribution (SW1) Test
3.19 DC Distribution (SW1) Test
Is
1.2 Vdc
present
?
Check L700, D700,
Q701 and R706
for US, DFP, etc.
Repair, as necessary.
Check C813
repair as necessary.
Refer to other DC test
flow charts.
Check C715 for
1.2 Vdc.
Replace
ROADRUNNER
U700B7
Pass
No
Yes
No
Is
3.60 Vdc
present
?
Is
1.2 Vdc
present at the specified
components
?
Go to
Filter B+
flow chart.
Check the
Filt_B+
(3.60 Vdc).
Yes
No
Check C715 for 1.2 Vdc.
Use this test on a unit with the following symptom: no SW1 (1.2 Vdc).
Check for SW1 after L702 from U701.
6880401P59-O
101