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LT1201 User Manual (020-1080-00 Rev. A) 16
CHK PWR
REF: power
flow
No screen
handle
(
2
)
Back-light
ok ?
NO
YES
U4
SCALER
INPUT/OUTPUT
D-SUB VGA
15PIN
DVI-D
NO
CHK
CN5 INPUT
YES
CABLE
CHK Panel
CONNECTOR
YES
LED always
ON or always
OFF when
power on
ok ?
CHK U5
SOFTWARE
、KEY PAD
YES
CHK
CN5 PIN18、20、30
NO
CHK
U11、Q10、
CHK
SOFTWARE
OR
CHANGE U
4
CHK U4
PIN 110、111
NG
OK
CHK LCD-VCC
CHK DE & D-SHCLK
CHK R、G、B SIGNAL
NG
CHK Panel
Backlight
ABNORMAL
NORMAL
RETURN
OK
REPLACE
U4
NG