Adjustments - Pioneer PDP-42A3HD Training & Troubleshooting Manual

(1) Adjustments

Follow the procedure below.
1-1)Conduct "(3)Adjustment of Vsw1 & Vsw2"and"(4)Adjustment of Vbw& Vp", when High Voltage Board is replaced.
1-2) There is no need of adjustment if Board other than High Voltage Board.
(2) Voltage Label Check
Be sure to confirm voltages on Voltage label before conducting adjustment.
(3) Adjustment of Vsw1 & Vsw2
Vsw1 : Adjust VR3 so that the voltage between Test Pad (TP328) and GND becomes
"Rated Voltage on Label ± 0.5V".
Vsw2 : Adjust VR4 so that the voltage between Test Pad (TP310) and GND becomes
"Rated Voltage on Label ± 0.5V".
Example
Vbw : 115.2
Vsw1 : 220.2
(s190.0/d70.0)115.2/220.2/249.8/210.1
VP : 249.8
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Vsw2 : 210.1
408200943
(Caution) Use the nearest chassis for grounding.
High Voltage Board
VR3 Vsw1
TP328 Vsw1
100
Voltage Label
Vbw Vsw1 Vsw2
Vp
TP310 Vsw2
VR4 Vsw2