LG 50PJ340 Training Manual - Page 102

TCP Testing

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TCP Testing Va: P122 5~7 from Y-SUS Va: Routes to: 50PJ350 X Board TCP Connector Distribution Any X Board to Any TCP P101~P105 or P201~P206 or P301~P305 Leaves Center X P212 pins 47~50 To Left X : P121 pins 1~4 3.3V Origination From Control board IC231 center leg. Arrives on X board Cent P232 Pins 1~5 Leaves Center X P211 pins 1~4 To Right X : P331 pins 47~50 Leaves Center X P212 pins 40~41 To Left X : P121 pins 10~11 Leaves Center X P211 pins 10~11 To Right X : P331 pins 40~41 + Must be checked on flexible cable. On any Gnd - On the below: On Va (0.51V) On 3.3V (0.535V) On EC (Open) Reversed On Va (Open) On 3.3V (2.8V) On EC (Open) Flexible Printed Ribbon Cable to TCP IC Va Gnd Gnd Gnd Va 3.3V n/c n/c 1 5 10 15 20 25 30 35 40 45 50 Look for any TCPs being discolored. Ribbon Damage. Cracks, folds Pinches, scratches, etc... 102 July 2010 50PJ350 Plasma

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102
July 2010
50PJ350
Plasma
TCP Testing
TCP Testing
Look for any TCPs
being discolored.
Ribbon Damage.
Cracks, folds
Pinches, scratches,
etc…
On any Gnd
On Va (0.51V)
On 3.3V (0.535V)
On EC (Open)
-
+
Reversed
On the below:
Must be checked on flexible cable.
5
10
15
25
30
35
40
45
50
1
Va
Gnd
3.3V
Gnd
20
Gnd
n/c
n/c
Va
50PJ350 X Board TCP Connector Distribution
Any X Board to Any TCP P101~P105 or P201~P206 or P301~P305
Va: P122 5~7 from Y-SUS
Va: Routes to:
3.3V Origination
From Control board IC231 center leg.
Arrives on X board Cent
P232 Pins 1~5
Leaves Center X P212 pins 40~41
To Left X : P121 pins 10~11
Leaves Center X P211 pins 10~11
To Right X : P331 pins 40~41
Flexible Printed Ribbon Cable to TCP IC
On Va (Open)
On 3.3V (2.8V)
On EC (Open)
Leaves Center X P212 pins 47~50
To Left X : P121 pins 1~4
Leaves Center X P211 pins 1~4
To Right X : P331 pins 47~50