Zenith H27G48S Service Manual - Page 15

FACTORY MENU 227-F R-CUTOFF NTSC: Red cutoff control is used to adjust cut-off voltage at the cathode. Range: 0-255d. 228-F G-CUTOFF NTSC: Green cutoff control is used to adjust cut-off voltage at the cathode. Range: 0-255d. 229-F B-CUTOFF NTSC: Blue cutoff control is used to adjust cut-off voltage at the cathode. Range: 0-255d. 230-F OSD CONT NTSC: OSD amplitude can be controlled by OSD contrast with a range of 12dB. Default value is 7d. 231-F AC BLK LEV NTSC: Black level for AC coupling with 3bit DAC. Default value is 0. 232-F BRI NTSC: Default value is 0 (internal brightness control with grey scale tracking). 233-F DISV NTSC: RGB Video signal on/off. Default value is 0 (enabled). 234-F FPOL NTSC: Default value is 0 (Negative feedback polarity selected, No external DAC voltage outputs). 235-F DEPTH_PB NTSC: Produces an ultra black level during blanking and output clamping which is the most negative signal at the signal output pins. Default value is 1. 236-F APCONSVGA FACTORY MENU 2 NTSC VIDEO ADJUST 001-F AUX OFFSET: Black level settings for composite video and S-Video inputs. Depends of RF sub brightness adjustment. Max value of 64d and default value of 32d. 002-F YUV OFFSET: Black level setting for Y Pr Pb input. Depends of RF sub brightness adjustment. Max value of 64d and default value of 32d. 003-F MAX CONTRAST: Max value of 64d and default value of 40d for 27"and 33d for 32" for NTSC video format. This value is used in one formula to limit the max contrast level. 004-F MAX BRIGHT: Max value of 64d and default value of 55d for 27" and 64d for 32". This value is used in one formula to limit the max brightness level. 005-F SUB COLOR: Max value of 63d and default value of 32d.This value is used in one formula to limit the minimum color level. 006-F MAX COLOR: Max value of 63d and default value of 55d for 27" and 47d for 32". This value is used in one formula to limit the maximum color level. 007-F RF SUB_TINT: Max value of 15d and default value of 7d. This value is used in one formula to center the tint level of RF input. 008-F AUX SUB_TINT: Max value of 15d and default value of 7d. This value is used in one formula to center the tint level of composite video inputs. 009-F YC SUB_TINT: Max value of 15d and default value of 7d. This value is used in one formula to center the tint level of S-Video inputs WHITE BALANCE RESET. 010-F NTSC CUT: Max value of 254d and default value of 127d. This register is used in one formula to reset the red, green and blue cutoff values of RF, Composite video and S-Video inputs before G2 setup and white balance adjustment. 011-F NTSC GAIN: Max value of 254d and default value of 127d. This register is used in one formula to reset the red, green and blue gain values of RF, Composite video and S-Video inputs before G2 setup and white balance adjustment. 012-F SVGA CUT OFFSET: Max value of 254d and default value of 127d. . This register is used in one formula to reset the red, green and blue cutoff values of SVGA inputs before G2 setup and white balance adjustment. 013-F SVGA GAIN OFFSET: Max value of 254d and default value of 127d. This register is used in one formula to reset the red, green and blue gain values of SVGA input before G2 setup and white balance adjustment. 014-F YPrPb CUT OFFSET: Max value of 254d and default value of 127d. . This register is used in one formula to reset the red, green and blue cutoff values of Component inputs before G2 setup and white balance adjustment. 015-F Y PrPb GAIN OFFSET: Max value of 254d and default value of 127d. This register is used in one formula to reset the red, green and blue gain values of component inputs before G2 setup and white balance adjustment. DEFLECTION OFFSETS 016-F H_SIZE OFFSET 017-F H_POSITION OFFSET 018-F V_SIZE OFFSET 019-F V_SCROLL OFFSET 3828VD0171G 2-12 DIGITAL FCS - FACTORY MENU