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I love older radio's and the service manuals that are sometimes hard to find. Was able to find a manual quite easily on this site.
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Thank you for your shop manual! Your help was very useful - the device is repaired! Once again - Thank you! I wish you a successful business! Edward (Russia).
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It was a great experience,instead of purchasing a new Stereo Amplifier ,in just minutes i repaired my old one and that was thaks to the manual I have purchased from you.
Thanks again.
Samuel Alter
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Das ging ja sehr unkompliziert hat bestens geklappt und die Quallität ist auch noch gut.
Vielen Dank dafür.
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Everything okay, thanks a lot. It was a pleasure for me to make a deal with you.
42PD4200 (PW1A)
Item
Power Unit Vs, Va Adjustment
Adj. point
Refer the figure below
Adjustment Preparations Adjustment Procedures (1) Turn on the set and perform (1) Turn Vs ADJ to adjust Vs voltage pre-heat run more than 1 to be within ±0.1V of the value min with burn-in screen. specified in the label on the panel.
Remarks Permissive level of voltage in sufficient time of heat-run performed is: Vs: within±0.45V Va: within±0.55V
(2) Receive full back pattern signal (or Video silence signal; it will be automatically turned off after a few seconds by power save function.)
(2) Turn Va ADJ to adjust Va voltage to be within ±0.2V of the value specified in the label on the panel.
(3) Connect voltmeter leads (3) Reconfirm that Vs voltage remains to Vs (or Va) and GND within ±0.1V of the specified value. test points of the power unit. Readjust if it� s outside of the margin. Label example <LOT>N6 Vs= 185.0V Va=65.0V Label position (Reference) Upper right If it� s hard to read the voltage value because of the wiring, highlight it in advance to be visible.
Power unit for WVGA
Va ADJ
Va
GND
Vs Vs ADJ
18
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