Panasonic TC-14RM12L P Service Manual

Panasonic TC-14RM12L P Service Manual Manual pdf 16 page image

- 16 -TC-14RM12LP/TC-14RM12LP(.)/ TC-20RA12LP/TC-20RA12LP(.)/TC-20RM12LP/TC-20RM12LP(.)ADJUSTMENTSFig. 11 2 3 3 2 1Fig. 2FOCUS CALIBRATION• Assure that the SUB-BRIGHTNESS adjustment has beendone.1. Supply a Philips or monoscope pattern signal.2. Adjust IMAGE MENU to DYNAMIC NORMAL.CALIBRATION:1. Adjust the FOCUS variable resistor for the point of betteradjustment.• with PHILIPS signal .... take as reference for adjustmentthe third vertical line (fig. 1).• with MONOSCOPE signal in the number 4 (fig.2).SUB-BRIGHT AND SUB-CONTRAST CALIBRATION1. Supply a WINDOW pattern signal.2. Adjust IMAGE MENU to DYNAMIC NORMALSUB-BRIGHT CALIBRATION1. Enter the Service Mode 1 and select S-BRT adjustcontrol.2. Press “RECALL” until the OSD S-BRT is off.3. Position the color analyzer in the LOW LIGHT imagearea.4. Ajust S-BRT control, so that it is Y=1,1±0,2 cd/m2.5. Press “RECALL” until the OSD S-BRT is on.6. Press “OK” to memorize dataPURITY CALIBRATION1. Adjust the HELMHOLTZ device for the local magnetic field(HORIZONTAL: 0 ± 0.03 X 10-4T)2. Let the set warm up (aging time) for a minimum of 60minutes.3. Supply a purity pattern (white pattern).4. Adjust CONTRAST and BRIGHT to MAXIMUM.5. The static convergence adjustment must have beenmade preliminarily.6. Connect a DC ampere meter between FBT pin11 (-) andFBT pin3 (+), and adjust to 920μA±10%, varying the S-BRT DAC control.CALIBRATION:1. Position the “ears” of the purity magnets both upward.2. Adjust the purity until the markers in the purity jigmonitorscope becomes symmetrical in the horizontaldirection.3. The vertical centralization correction is made throughthe purity magnets for stripe CRT type only.4. Slide the yoke forward by 10 mm±5 in the monitor. Then,tighten the deflection yoke.5. Repeat the procedures 2 ~ 3 ~ 4.6. Press the belt of deflection yoke.7. Adjust “beam landing” using a microscope. (for modelchange or instrument check only)4ITEM / PREPARATION PROCEDUREA’ A’(A’-A’) = < 2°