Motorola i897 - SLEDGEHAMMER Test

TROUBLESHOOTING: SLEDGEHAMMER Test
3.5 SLEDGEHAMMER Test
Is the
voltage at R660
2.775 Vdc
(SF)
Go to the
test flowcharts for
voltage regulator
verification.
Check
L653 for
2.775 Vdc (V2_RX).
Go to the
test flowcharts for
voltage regulator
verification.
Yes
No
Is
the voltage
at L653
correct
+10%
?
Is the
voltage at E601
and R325 at 1.875
Vdc
+10%?
Yes
No
Is the
voltage at E659
(SF) at 2.56 Vdc
+10%
The problem is in the
SLEDGEHAMMER.
Repair or replace, as
necessary.
Go to the
test flowcharts for
voltage regulator
verification.
Use this test to check the SLEDGEHAMMER circuitry.
Yes
No
Yes
No
Continued
on next
page
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