Mitsubishi Electric PD-4265, Service Manual

Page: 34 / 127

PD-5065
34
2-1. Adjustment of the Vs voltage
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.
Turn the volume control (VS ADJ VR151) in the power unit and make adjustments until the voltages of
Vs and 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.
2-2. Adjustment of the Vd voltage
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.
Confirm that the voltages of Vd and D, GND of the power unit are maintained at the voltage
values specified for the PDP (Vd value of the voltage regulation indicator label on below the figure)
±
1V.
Otherwise, turn the volume control (Vd ADJ VR161) until the voltage attains the voltage values specified
for the PDP (Vd value of the voltage regulation indicator label on below the figure)
±
1V.
2-3. Adjustment of the +5V voltage
Display a color bar by means of either video signal of VIDEO input, or DVD/HD input, or RGB input.
Confirm that the voltages of Vcc and D, GND of the power unit are maintained at "5.15
±
0.1V".
Otherwise, turn the volume control (Vcc ADJ VR121) 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.
2. Adjustment of the power unit (Using a screwdriver for general-purpose
adjustments)
• PD-5065
(1)
(2)
(1)
(2)
(1)
(2)
(s187.4 / d70.0)
120.1 / 215.2 / 224.8 / 210.3
605.7 / 101.8 677.3 / 11208
207.5 / 0 / 1 / 0 / 0
504202287
" s187.4" means Vs=187.4V, and "d70.0" means Vd=70.0V