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LG 50PK950 Training Manual page 123

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TCP Testing
TCP Testing
Va: Comes from Y-SUS P114 1~4
Va: Comes In on:
Left X : P121 pins 1~4
Leaves to Center X P120 pins 1~2
Center X : P220 pins 1~2
Leaves to Right X P221 pins 1~2
Right X : P320 pins 1~2
Must be checked on flexible cable.
On any Gnd
-
On the below:
Reversed
On Va (0.51V)
On Va (Open)
On 3.3V (0.54V)
On 3.3V (2.8V)
On EC (Open)
On EC (Open)
50PK950 X Board TCP Connector Distribution
Any X Board to Any TCP P101~P108 or P201~P207 or P301~P308
Flexible Printed Ribbon Cable to TCP IC
Va
EC
Gnd
n/c
1
5
10 15
Gnd
Gnd
Va
3.3V
EC
20
25 30
35
40 45
50
October 2010
123
3.3V Origination
From Control board
IC53 center leg.
Arrives on X boards P110,
P210, P310
Pins 57, 58, 59, 60
Look for any TCPs
being discolored.
Ribbon Damage.
Cracks, folds
Pinches, scratches,
etc...
n/c
50PK950
Plasma

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