Panasonic CT-27SL13MUG Service Manual page 111

GND level at TP35. (See waveform detail).
2. In service mode, select DAC for contrast adjustment "CONT", and
adjust data to obtain between 7.5IRE and 100IRE level at TP35.
(See waveform detail)
12.2. Color output adjustment / Service DAC adjustment (COLOR,
TINT)
NOTE
if a rainbow pattern generator is available perform the following procedure; the next section
describes the procedure with no rainbow pattern.
Make sure that sub-contrast adjustment was finished prior to perform this adjustment.
PREPARATION
1. Normalize the picture settings.
2. Set the BRIGHTNESS control to minimum.
3. Set the COLOR control to the center.
4. Set the TINT control to the center.
5. Set the PICTURE control to the maximum.
6. Set the SHARPNESS control to the minimum.
PROCEDURE
1. Apply a rainbow color bar pattern.
2. Connect the oscilloscope to TP37.
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