Service Manual
Chapter 2. Testing Procedures
a. Testing flow chart
START
Check VCC
+5V
T
Check +3.3V.
T
Check +2.5V
T
Check U1 Pin13
CLKIN signal
T
Check U1 Pin14
CLKOUT signal
T
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F
F
F
F
F
Version 1.0
REPLACE CABLE
REPLACE U4
REPLACE U3
REPLACE U1,Y1
REPLACE U1
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