User`s manual

4-2-4 Solution processes for DC Power
NG
OK
Test input voltage:
L701 --Æ 12 V
L703 --Æ 6 V
L721 --Æ 3.3 V (Samsung PANEL)
Test voltage as follow：
L705--Æ8V
L706--Æ5V
L704--Æ5V
L718--Æ2.5V
L719--Æ1.2V
OK
Check the junction that CN703 to
CN704 or CN701 to CN702 ok
or not?
Is there any short or
cold solder?
4-2-5 Solution processes for SCALER
NG
Check power supply , input
and output signal of U1
（ZR391055） and U2
（DS90C2501）ok or not?.
OK
OK
Check input and output signal of
U8，and TX0-/TX0+ signal etc. ok
or not?
Is there any short or
cold solder?
NG
Replace U8
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