15- Vertical Deflection Calibration; 16- Withe Balance Calibration - Panasonic TC-20KL04A Service Manual

TC-20KL04A / TC-20KL04P / TC-29KL04A / TC-29KL04P
ADJUSTMENTS
ITEM / PREPARATION
14- VERTICAL DEFLECTION CALIBRATION AND
CONFIRMATION
1. Adjust IMAGE to DYNAMIC NORMAL
16- WHITE BALANCE CALIBRATION
1. Adjust the HELMHOLTZ device to local magnetic field.
2. Let the set warm up for a minimum of 30 minutes.
3. Receive a white balance. (This sign should contain
burst sign).
4. Adjust the IMAGE menu to DINÂMIC NORMAL.
5. Fully degauss the CRT by using an external degaussing
coil.
6. Position the color analyzer in contact with the CRT face.
Assure that not entering light for the meter borders and that
the CUT OFF voltage calibration has been done. If the value
in the color analyzer is below 150, adjust CONTRAST to 50
and press "8" in CHK2 mode.
Fig. 1
Fig. 2
PROCEDURE
S-CORR CONFIRMATION AND CALIBRATION
1) Confirmation in 50Hz
1. Supply a PHILIPS PAL-N signal.
2. Confirm that S-CORR 50Hz is in [A] DAC .
Model 20KL 29KL
[A] 18 DAC 33 DAC
2) Confirmation in 60Hz
1. Supply a MONOSCOPE signal.
2. Confirm that S-CORR 60Hz is in [A] DAC.
Model 20KL 29KL
[A] 18 DAC 33 DAC
3) V-SLOPE calibration
1. Supply a MONOSCOPE signal.
2. Adjust V_SLOPE (CHK3) so that the beginning of the
black part of the image is aligned with the center of the
CRT as Fig. 1.
4) VERTICAL CENTRALIZATION 50 HZ CALIBRATION
1. Supply a PAL-N Philips signal.
2. Adjust V-SHIFT 50Hz (CHK3) so that the Philips pattern's
center it is in the center of the CRT.
5) VERTICAL CENTRALIZATION 60 HZ CALIBRATION
1. Supply a MONOSCOPE signal.
2. Adjust V-SHIFT 60Hz (CHK3) so that the monoscope
pattern´s center it is in the center of the CRT.
6) VERTICAL HEIGHT (V-AMP 50HZ) CALIBRATION
1. Supply a PHILIPS PAL-N signal.
2. Adjust V-AMP-50Hz (CHK3) so that the Philips pattern's
circle height be the same dimension of the width.
7) VERTICAL HEIGHT (V-AMP 60HZ) CALIBRATION
1. Supply a MONOSCOPE signal.
2. Adjust V-AMP-60Hz (CHK3) according to box.
3. MEMORIZE in EEPROM.
C,D 1.5 ~ 2.0
A,B 1.5 ~ 1.6
CALIBRATION:
[1] LOW LIGHT CALIBRATION
1. Adjust S-BRT, so that Y = 7
2. Adjust R-CUT OFF, so that x = 0.273 ±0.01
3. Adjust G-CUT OFF, so that y = 0,283 ±0.01
[2] HIGH LIGHT CALIBRATION
(Confirm that G-DRIVE is 31 DAC)
1. Adjust S-BRT, so that Y = 150
2. Adjust R-DRIVE, so that x = 0,275 ±0.01
3. Adjust B-DRIVE, so that y = 0,284 ±0.01
[3] Repeat the procedures [1] and [2].
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