21
42PD9800TA (FW1)
Item
Power Unit Vs Adjustment
Preparation Procedure
(1) Turn on the set and perform
pre-heat run more than 1 min
on burn-in screen.
(1) Turn Vs ADJ to adjust Vs voltage
to be within ±0.1V of the value
specified in the label on the panel.
Adjust within ± 1V at Vs1
Adjust within ± 0.1V at Vs2
(2) (2)
Connect voltmeter leads to Vs
and GND test points of the power unit.
Label example
<LOT>N6
Vs= 80.0V Va=60.0V
Vw=140.0V Vx=60.0V
Reconfirm that Vs voltage remains within
±0.45V of the specified value.
Readjust if it’s outside of the margin.
Vs1:Vs coares
adjustment VR
Vs2:Vs
fi
ne
adjustment VR
1
2
3
CN99:Vs test point
(Va)
Vs
GND
Summary of Contents for 42PD9800TAFW1
Page 64: ...64 42PD9800TA FW1 10 Printed wiring board diagram PWB assembly MAIN side A ...
Page 65: ...65 42PD9800TA FW1 PWB assembly MAIN side B ...
Page 69: ...69 42PD9800TA FW1 11 Block diagram ...
Page 71: ...71 42PD9800TA FW1 13 Wiring diagram 42PD9800TA 1 2 ...
Page 72: ...72 42PD9800TA FW1 42PD9800TA 2 2 ...
Page 74: ...74 42PD9800TA FW1 ...
Page 76: ...76 42PD9800TA FW1 MEMO ...
Page 98: ...YK No 034E Printed in Japan JE QR70531 42PD9800TA ...