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Troubleshooting
4-2
NO LOCKING
X1001, DC voltage is
H : 17~19V
V : 12.5~14V?
Yes
T1001 input voltage
R2003, L1002 : 5V
R2001 : 3.3V
Yes
T1001 Data, control
oddure at R2002~R2004,
R2006~R2013, R1015.
Yes
U500(40~50, 53~63)
Data control signal
is OK?
Yes
Check U100.
No
Check U1004.
No
Check U72, U71.
No
Check T1001.
No
Check U500.
Samsung Electronics
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