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Troubleshooting
2-8 Samsung Electronics
LCD output error
Pin38 in XCON1
is in high state?
Pin3 in XQ102
is in high state?
Check the connection between
pin44 in ZIC1 and pin38 in XCON1.
Check the connection between
base in XQ101 and pin62 in UIC01.
Yes
No
No
VDD appears at
pin4,5 in XCON1?
Yes
No
About 32MHz
clock output is normal at
pin78 in XIC01?
Yes
No
About 32KHz output
is normal at pin77
in XIC01?
Yes
Check the connection between
pin4,5 in XCON1 and pin4 in XQ102.
About 27MHz clock input is
normal at pin2 in XIC01.
Check the soldering of XIC01.
No
VDD appears
at pin36 in XCON1.
Check the connection between
pin36 in XCON15 and PF501.
Yes
No
Yes
13.5MHz input
is normal at pin93 in
XIC01?
No
Pin of VDD_3.3,
VDD_2.5 in XIC01 has
normal level?
Yes
Check the connection betwen
pin93 in XIC01 and pin5 in XIC06.
Check the connection to
posotive pin in PE118.
No
Yes
Check the data line at the pin4,5,6,7,8,9,10,11 in XIC01.