NEC PX-50XM4 series Service Manual page 279

2. Adjustment of the power unit (Using a screwdriver for general-purpose
adjustments)
2-1. For the PX-42VM5/42VP5/42VR5,PX-42XM3/42XR3 Series
2-1-1. Adjustment of the Vs voltage
(1) Enter a color bar input by means of either video signal of VIDEO input, or DVD/HD input, or RGB
input, and turn on the power switch of the main unit.
(2) Turn the volume control (RV203) in the power unit and make adjustments until the voltages of TP204
and TP205 (D, GND) of the power unit attain the voltage values specified for the PDP (Vs value of the
voltage regulation indicator label on below the figure) ±1V.
2-1-2. Adjustment of the Vd voltage
(1) Enter a color bar input by means of either video signal of VIDEO input, or DVD/HD input, or RGB
input, and turn on the power switch of the main unit.
(2) Turn the volume control (RV204) in the power unit and make adjustments until the voltages of TP206
and TP205 (D, GND) of the power unit attain the voltage values specified for the PDP (Vd value of
the voltage regulation indicator label on below the figure) ±1V.
2-1-3. Adjustment of the +5V voltage
(1) Display a color bar by means of either video signal of VIDEO input, or DVD/HD input, or RGB input.
(2) Confirm that the voltages of TP203 and TP205 (D, GND) of the power unit are maintained at "5.15 ±
0.1V". Otherwise, turn the volume control (RV201) until the voltage attains "5.15 ± 0.1V".
(Caution) Rear-side view when the back cover is removed The label is concealed between the MAIN
PWB and PDP. Check it by peeping through the space from above. The label position can
be changed, without notice.
SERIAL NO.
********
Vd= **V
Vs=***V
CODE -01
OR
Vs/Vd/100/185/220 V
555/84.2/782/10204 K
347 W/0 /2 P
6-2
CONFIDENTIAL