37LC2DB (CHASSIS:LD61A) - LG TV Service Manual (repair manual). Page 23

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Push the POWER
ON key
Check for S/W error
Replace Cortez
Replace Hudson
Power Error
Replace IC505
Replace STi5100
Power Error
Attach the input
cable(s)
Replace Tuner
DTV
Power Error
Check the
Condition of all 
Connectors, wafers,
I2C In the 
system.
Check 8bit
Signal at digital
Tuner at 
R318-326.
Check 5V 
At L305,310
Check 8bit
Signal at AR110-
AR111
Check 8bit
Signal at AR 500-
AR501
Check 24bit
RGB at AR700-
AR705
Check LVDS
Output of Cortez
Check Power 
Levels and crystal
Check power 
Levels for 
STi5100
Is the
Set ON
Is the input 
cable attached?
What is
the input signal 
mode?
YES
NO
NO
YES
PASS
FAIL
PASS
FAIL
PASS
FAIL
PASS
FAIL
FAIL
FAIL
FAIL
PASS
PASS
PASS
PASS
FAIL
PASS
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