Panasonic TX-L42D25B Service Manual

Also see for TXL42D26B: Operating instructions

Panasonic TX-L42D25B Service Manual Manual pdf 22 page image

Adjustment MethodSub-Contrast/White Balance AdjustmentInstrument Name Connect to Remarks1. Remote controller2. LCD WB meter (Minolta CA-210 or equivalent)3. Comunication jig4. Computer for external controlCorrelation can be also taken byCS-1000A or equivalentProcedure RemarksSubcontrast adjustment1. Receive PAL colour bar (100% white) RF signal.2. Enter “Contrast” adj. In SERVICE mode.3. Start adjusting by using Yellow Key.4. If the adjustment finished normally, the letter of Contrast will change from redto black.White Balance adjustment1. Procedure basically performs checking using the production software andmake automatic adjustment using external computer.2. It adjusts in the mode of: Colour balance NormalViewing Mode DynamicNormalHighlight x: 0.2710 ± 0.010y: 0.2750 ± 0.010NormalLowlight x: 0.2710 ± 0.010y: 0.2750 ± 0.010Let the panel standfor more than 3hours at more than 20 °C.Basically perform adjustment in theambient environment of roomtemperature more than 20 °C.The aging time is more than20 minat above room temperature.Applied signal100% full colour bar0.7V p-p white peak85% modulation100% WHITE50% GRAY22