Service Osd - LG FLATRON L1520BM-AL*R Service Manual

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
C

SERVICE OSD

IBM
Compatible PC
Power inlet (required)
Power Select Switch
(110V/220V)
A
Power LED
E ST Switch
B
F V-Sync On/Off Switch
(Switch must be ON.)
Figure 1. Cable Connection
A
15
10
5
PARALLEL PORT
OFF ON
5V
F
B
- 10 -
9 6
1
5
11
6
1
13
25
5V
ON
5V
E
4.7K
OFF
74LS06
C
1
14
4.7K
4.7K
74LS06