SONY PFM42B2E
Service Manual

2. WHITE BALANCE Menu Structure Adjust the white balance of the desired color temperature by selecting the items of the WHITE BALANCE menu and by adjusting the R, G, B gain.
WHITE BALANCE WINDOW COLOR TEMP RED GAIN GREEN GAIN BLUE GAIN SUB BRIGHT : : : : : : OFF HIGH 103 141 128 151

3. ADC CALIBRATION Menu Structure Calibrate the A/D converter (IC200) until non-uniformity between the R, G and B channels of the A/D converter is removed.
ADC CALIBRATION AUTO CAL MODE : RED GAIN : GREEN GAIN : BLUE GAIN : RED BIAS : GREEN BIAS : BLUE BIAS : R:���

OFF 128 128 128 128 128 128 B:���

G:���

a) WINDOW The PFM-42B2/B2E has the built-in window signal for white balance adjustment. There are two sizes that are the large and small windows. Select the optimum size of window for white balance adjustment. OFF : Window does not appear. TYPE1 : Small window TYPE2 : Large widow n When white balance is going to be adjusted using an external signal, perform the A/D converter calibration (referring to the next paragraph 3) ADC CALIBRATION) before starting the white balance adjustment. b) COLOR TEMP To adjust the white balance, firstly select the desired color temperature from HIGH, LOW, 1, 2, 3, 4, 5 or 6 on the COLOR TEMP sub-menu. Color temperature of items 1 to 6 are the same as those of the user menu. c) RED GAIN Adjust the red gain of the selected color temperature. The range of adjustment is from 000 to 255. d) GREEN GAIN Adjust the green gain of the selected color temperature. The range of adjustment is from 000 to 255. e) BLUE GAIN Adjust the red blue of the selected color temperature. The range of adjustment is from 000 to 255. White Balance Adjustment Refer to section �2-3. White Balance Adjustment�.

a) AUTO The A/D converter is automatically calibrated. n When sufficient adjustment accuracy cannot be obtained by the automatic calibration, perform basically the manual calibration using the following ADC CALIBRATION menu items. b) CAL MODE The A/D converter has the calibration mode as its operating mode as follows. * The A/D converter has the R, G, B GAIN adjustments and the R, G, B BIAS adjustments. The GAIN adjustments of the A/D converter are used for CONTRAST adjustment in the machine. The R, G, B BIAS adjustments of the A/D converter are used for BRIGHTNESS adjustment in the machine. CAL MODE - OFF : Standard display state The R, G, B GAIN values and the R, G, B BIAS values are controlled by the CONTRAST/BRIGHT data of the user menu. The R, G, B GAIN values and the R, G, B BIAS values of this menu cannot be adjusted independently. CAL MODE - OFF : Calibration mode The R, G, B GAIN values and the R, G, B BIAS values of this menu can be adjusted independently. The R, G, B data that appear in the most-bottom part of the menu in cyan, change from the indication �___� to the indication of any digital output data of the A/D converter. c) RED GAIN/GREEN GAIN/BLUE GAIN The respective R, G, B GAIN values can be adjusted independently. The range of adjustment is from 000 to 255. d) RED BIAS/GREEN BIAS/BLUE BIAS The respective R, G, B BIAS values can be adjusted independently. The range of adjustment is from 000 to 255.

PFM-42B2/42B2E

2-3