1 - 27
Key operations:
: Selects an item (downward). (Moves upward when at last line)
: Selects an item (upward). (Moves downward when at top line)
+
: Invalid
-
: Invalid
NEXT
: Invalid
RESET
: Invalid
EXIT
: Exits the OSM menu
The DVI SELECT menu for the OSM function is shown above. The DVI-I DDC is changed on
this screen. The Ch is saved in the initialization EEPROM (IC100) when selected, and the
EEPROM (IC104 or IC105) in which the EDID data (for analog/digital) to be selected is stored
can be accessed. When DIGITAL is selected, the DVI-I (D) EDID data will be read in immedi-
ately after selection, and when ANALOG is selected, the DVI-I (A) EDID data will be read in.
The above OSM menu will open when "-" or "+" is pressed while the DVI "NO SIGNAL" or "OUT
OF RANGE" is displayed for OSM, and the current setting state can be confirmed. In addition,
if the setting value does not match the PC and is not displayed on the screen, the problem can
be resolved by displaying this OSM menu and changing DDC. The DDC switching circuit is
compatible with the asset management function, and the changed settings are saved even
when the monitor power is OFF. Thus, the selected EDID data is read in.
When considering the asset management function, the external power (+5V) supplied from the
signal connector may be lower than the Standards depending on the PC. (The power is 5V
±
5%
for VESA Standards.) As a design margin, the power should be 3V at the signal connector, and
at least 2.7V at the V
CC
of the DDC peripheral circuit IC after passing through the shot diode.
Thus, the DDC peripheral circuit uses an IC having a V
CC
that operates at a 2.7V to 5.5V power
voltage. V
CC
: 2.5V (Min.) EEPROM is used to provide a margin. Note that it is 5V
±
5% for the
specifcation of this LCD monitor.
SEE USER'S MANUAL FOR
MORE INFORMATION
Summary of Contents for NEC MultiSync LCD1550X LCD1550X LCD1550X
Page 88: ...SCHEMATIC DIAGRAM POWER LCD1550X Normal Power Save 1ch Pin 4 2ch Pin 1 3ch Pin 2 4ch Pin 5...
Page 89: ...SCHEMATIC DIAGRAM PWB MAIN POWER LCD1550X...
Page 90: ...SCHEMATIC DIAGRAM PWB MAIN INPUT LCD1550X...
Page 91: ...SCHEMATIC DIAGRAM PWB MAIN SYNC LCD1550X...
Page 92: ...SCHEMATIC DIAGRAM PWB MAIN TMDS LCD1550X...
Page 96: ...SCHEMATIC DIAGRAM PWB MAIN ASIC LCD1550X...
Page 97: ...SCHEMATIC DIAGRAM INVERTER LCD1550X 1ch Q701 B 2ch Q702 B...
Page 98: ...SCHEMATIC DIAGRAM PWB SW LCD1550X...
Page 100: ...SCHEMATIC DIAGRAM POWER LCD1550X...
Page 101: ...SCHEMATIC DIAGRAM PWB MAIN POWER LCD1550X...
Page 102: ...SCHEMATIC DIAGRAM PWB MAIN INPUT LCD1550X...
Page 103: ...SCHEMATIC DIAGRAM PWB MAIN SYNC LCD1550X...
Page 104: ...SCHEMATIC DIAGRAM PWB MAIN TMDS LCD1550X...
Page 105: ...SCHEMATIC DIAGRAM PWB MAIN MC LCD1550X...
Page 106: ...SCHEMATIC DIAGRAM PWB MAIN ASIC LCD1550X...
Page 107: ...SCHEMATIC DIAGRAM INVERTER LCD1550X...
Page 108: ...SCHEMATIC DIAGRAM PWB SW LCD1550X...
Page 127: ...16 Document No VSPF A028 Bave Average brightness of 1 to 9 10 50 90 90 10 50 5 1 2 3 6 9 8 7 4...
Page 155: ......
Page 156: ......
Page 157: ......
Page 158: ......
Page 159: ......
Page 160: ......
Page 161: ......
Page 162: ......
Page 163: ......
Page 164: ......
Page 165: ......
Page 166: ......
Page 167: ......
Page 168: ......
Page 169: ......
Page 170: ......
Page 171: ......
Page 172: ......
Page 173: ......
Page 174: ......
Page 175: ......
Page 176: ......
Page 177: ......
Page 178: ......
Page 179: ......