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5-4
Power-Up Failure–Page 2
May 28, 2008
1
Probe
16.8 MHz
Signal at R1416
Signal
No
greater than
1 Vp-p
Yes
Check
16.8 MHz
Signal at
C1402
Signal
No
greater than
1 Vp-p
Yes
Refer Board to
Service Depot for
Reflash, Patriot,
SRAM, and
FLASH Analysis
Troubleshooting Charts: Power-Up Failure
Signal may
appear for a very
short period of
time (50ms). Use
an oscilloscope
with trigger to
capture signal
Investigate
16.8 MHz
Reference
Oscillator
This signal may
contain harmonics
and, therefore, may
not appear as a
perfect sinewave
Investigate
Clock Buffer
Components and
Isolate Problem
6871620L01-C
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Table of Contents
Troubleshooting
