LG L1915S Service Guide - Page 13

SERVICE OSD 1) Turn off the power switch at the front side of the display. 2) Wait for about 3 seconds and press MENU, POWER switch with 1 second interval. 3) The SVC OSD menu contains additional menus that the User OSD menu as described below. a) MODULE : To select applied module. b) NVRAM INIT : EEPROM initialize(24C08) c) ADC OFFSET : The lowest value of input leves sets to digitally 0(zero). d) ADC GAIN : The highest value of input levels sets to digitally 255. e) ADC CAL : W/B balance sets the gain and offset value. f) ELAPSED CLEAR : To initialize using time. Video Signal Generator Control Line IBM 15 Compatible PC 10 5 Not used RS232C PARALLEL PORT OFF ON 5V F C PARALLEL VGS A MONITOR B V-SYNC ST POWER Power inlet (required) 220 Power Select Switch (110V/220V) Power LED E ST Switch F V-Sync On/Off Switch (Switch must be ON.) A 9 5 11 6 1 6 1 13 25 C 1 14 ON E OFF 5V 4.7K 5V 4.7K 4.7K 74LS06 74LS06 B Figure 1. Cable Connection - 11 -