ADJUSTMENT TO POWER SUPPLY PWB AFTER REPLACEMENT
- Vs & Va VOLTAGE ADJUSTMENT [Label Location]
- Turn on the set and perform pre-heat run more than 1 minute with a snow noise screen.
- Receive full black pattern (blanking level) signal (or Video No signal; in this case, it will be automatically turned off after a few seconds because of power save function).
- Connect voltmeter leads to the Vs or Va and GND test points on power unit. (Measurement error of voltmeter should be Less than 0.02V)
Adjustment
- Turn Vs ADJ to adjust Vs voltage to be within 0.1V of the value specified in the label on the panel. *1
- Turn Va ADJ to adjust Vs voltage to be within 0.2V of the value specified in the label on the panel. *1
- Reconfirm that Vs voltage remains within 0.1V of the value. Readjust if it's outside the margin.
Remarks
[LOT] N6
Vs=80.0V Va=60.0V
V• =140.0V Vx=60.0V
*1. Permissive level of
voltage in case sufficient time of heat-run performed.
Vs: within 0.45V, Va: within
0.55V
Power PWB
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