LG 42PW350 - Set Up and Set Down Adjustments; SET-UP ADJUST: VR601; SET-DN ADJUST: VR401

Observe the Picture while making these adjustments Normally they do not have to be done
Set Up and Set Down Adjustments
Set must be in “WHITE WASH”
All other DC Voltage adjustments should have already been made.
Observe
the
Picture
while
making
these
adjustments
.
Normally
,
they
do
not
have
to
be
done
.
ADJUSTMENT LOCATION:
Center Right of the board.
Waveform TP on the Y-Drive Board
Y-Drive Test Point
Ud 2
nd
Bff f t
A
VR601
U
n
d
er
2
nd
B
u
ff
er
f
rom
t
op
SET-UP ADJUST:
1) Adjust VR601 and set the (A) portion of the signal to
match the waveform above. (155V p/p ± 5V)
B
ADJUSTMENT LOCATION:
SET-DN ADJUST:
2) Adjust VR401 and set the (B) time of the signal to match
the waveform above. (195uSec ± 5uSec)
VR401
B
TIP: To help lock the scope when capturing the
Y
SUSW f thVSDATP thC t l
June 2011 42PW350 Plasma
89
Bottom Right
Just above P101
Y
-
SUS
W
ave
f
orm, us
th
e
VS
_
DA
TP
on
th
e
C
on
t
ro
l
Board for an External Clock.