User`s manual

4-2-2 Solution process of whole PDP:
R128
Q5
Screen is nothing under power on
Check AC input of PDC
Check PowerSTB5V（U516 3PIN）
Voltage: 5V
Check the REL-SW state of power IO
interface，
High Voltage：Turn on
Low Voltage：Standby
Test Point： C pole of Q5
High Voltage：5V（4.2---5.3V）
Low Voltage：0V
If REL-SW is ok，check other
power.
Check the voltage of CN703：
PIN5 --Æ 12 V
PIN8 --Æ 3.3 V
PIN9 --Æ 3.3 V
PIN11 --Æ 6 V (Samsung PANEL)
Check device circuit and logic circuit,
Vs, Vset, Vsc, Ve etc.
Arrow shows test point.
If there was anything
unmoral, test voltage and
re
p
air it.
Process of repair as follow
Image board
CN703
CN704
Q5
Fi
g
1: Volta
g
e sheet
Name Voltage Reference
VS 209V Voltage for driving sustain
VA 70V Voltage for driving address
VE 82V Voltage for driving X-bias
VSET 198V Voltage for driving reset
Vscan -198V Voltage for driving scan
Vg 15V Voltage for driving FET
D3V3 3.5V Voltage for driving logic
U516
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