Samsung GT-B7330 Service Manual page 45

Flow Chart of Troubleshooting
9-1-2. LCD Working
Power Switch On
LCD FPCB
NO NO
correctly connect
LCD Display
connector is co
On?
rrectly connecti
ng?
Yes
F703, F704, F705,
F703, F704,
F706, F707
NO
F705, F706,
Resolder
F707 Correctly
Yes
Yes
mounted?
C704, C703
Yes
VLCD_IO_2.6=2.6V
VLCD_3.0V =3.0V
NO
U706
3rd, 4th pin
C707
LCD_EN = High
LED+_18V= 18V?
NO
Yes
NO
Yes
U706 Change
LCD Replace U700 & Check
Replace Main PBA
Replace
neighboring circuits
9-6
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