LG 50PQ30 Training Manual page 81

VZB (Z - Bias) Adjustment
VZB (Z - Bias) Adjustment
Top of Z-SUS
VZB (Z Bias)
Set should run for 15 minutes, this is the "Heat Run" mode.
Set screen to "White Wash" mode or 100 IRE White input.
Adjust VZ (Z-Bias) to Panel Label (± 1V)
Read the Label on the back of the upper left hand
side of the panel when adjusting VR200.
Board
VR200
VZB (Z-Bias) TP Top
Side R271 or R272
81 November 2009 50PQ30 Plasma
Chassis Ground or
the Top of C239
Note: You can also
measure across C239
for the VZB (Zbias)
adjustment.
Measured from Chassis Ground
Z Bias
or J125