Y - Drive Buffer Troubleshooting - LG 42PJ350 Training Manual

Y - Drive Buffer Troubleshooting
Y - Drive Buffer Troubleshooting
YOU CAN CHECK FOR A SHORTED BUFFER ICs OUTPUT USING THIS PROCEDU
YOU CAN CHECK FOR A SHORTED BUFFER ICs OUTPUT USING THIS PROCEDU
BACK SIDE
BUFFER IC
(FGnd)
Any of these output lugs can be checked from
floating ground. Look for shorts indicating a
defective Buffer IC
FRONT SIDE
Using the "Diode Test" on the DVM, check
the pins for shorts or abnormal loads.
RED LEAD On
Floating Ground
Indicated by white outline
BLACK LEAD On
Floating Ground
Indicated by white outline
6 Ribbon cables communicating with the Panel's (Horizontal
Electrodes) totaling 768 lines determining the Panel's Vertical
resolution pixel count.
68
BLACK LEAD On "ANY"
Output Lug Reads 0.80V
RED LEAD On "ANY"
Output Lug Reads Open
August 2010 42PJ350
RE
RE
Plasma