NEC NEC MultiSync LCD1550X LCD1550X LCD1550X, Service Manual

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- 8 - Document No. VSPF-A028
4.3 Control Lock Mode
This control completely locks out access to all OSM control functions. When attempting to activate OSM controls
while in the Lock Out mode, a screen will appear indicating the OSM controls are locked out.
To activate the OSM Lock Out function, press both of “select Left” and “select Right ” and hold down simultaneously.
In this mode only “OSD Rotation” and “Input 1/2 Select” function by front button are active and the other items are
disable to select.
To resume back to user mode, Press both of “select Left” and “select Right ” and hold down simultaneously.
4.4 Input Signal Connectors
4.4.1 Analog Video Input : 15 pin mini D-sub
Table 3. Pin assignment for analog video input connector
PIN NO. Separate Sync Composite Sync Sync On Green
1 RED
2 GREEN GREEN
W/SYNC
3 BLUE
4 GROUND
5 DDC-GROUND
6 RED VIDEO GROUND
7 GREEN VIDEO GROUND
8 BLUE VIDEO GROUND
9 +5V DDC INPUT
10 SYNC-GROUND
11 GROUND
12 DDC-SDA
13 H.SYNC H/V SYNC
|
14 V.SYNC
15 DDC-SCL
15
10
5 1
6
11
4.4.2 Digital Interface Signals
4.4.2.1 Video Signals and Sync Signals
Signal Format Panel Link TM T.M.D.S (transition minimized differential signaling)
architecture
R,G,B color depth 8 bit
Dot clock rate 80MHz maximum
minimum Hsync width N/A (DE Only)
minimum Vsync width N/A (DE Only)