LG 50PJ340 Training Manual - Page 100

X Board Layout Primary Circuit Diode Check

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X Board Layout Primary Circuit Diode Check The three X-Boards have similar circuit layouts for the connections going to the TCPs, as shown below. VA Pins 4~7 3.3V Pins 32~33 VA Pins 44~47 Gnd + + On Gnd - On the below: On any Va (0.55V) TCPs connected. On any Va (0.6V) TCPs disconnected. On 3.3V (0.6V) TCPs connected. On 3.3V (1.09V) TCPs disconnected. VA source disconnected from Left X board - On Gnd On the below: On any Va (Open) TCPs connected. On any Va (Open) TCPs disconnected. On 3.3V (1.9V) TCPs connected. On 3.3V (2.5V) TCPs connected. 100 July 2010 50PJ350 Plasma

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100
July 2010
50PJ350
Plasma
X Board Layout Primary Circuit Diode Check
X Board Layout Primary Circuit Diode Check
The three X-Boards have similar circuit layouts for the connections going to the TCPs, as shown below.
On any Va (0.55V) TCPs connected.
On any Va (0.6V) TCPs disconnected.
On 3.3V (0.6V) TCPs connected.
On 3.3V (1.09V) TCPs disconnected.
On Gnd
+
-
On the below:
On Gnd
-
+
On the below:
On any Va (Open) TCPs connected.
On any Va (Open) TCPs disconnected.
On 3.3V (1.9V) TCPs connected.
On 3.3V (2.5V) TCPs connected.
Gnd
VA source
disconnected
from Left X board
3.3V
Pins 32~33
VA
Pins 44~47
VA
Pins 4~7