2-6
2.5.3 PWB adjustment
2.5.3.1 Initial writing in EEPROM data
To initialize the preset timing, write the default data of preset timing listed in 2.11 Timing chart with an external
source by communication.
Confirm that the model name shown on the OSM picture in factory mode is LCD1550X.
2.6 General adjustment and inspection
2.6.1 Preparation
Note1) Rough adjustment should be implemented with 100VAC/60Hz, and aging (heat-running) should be
implemented with 240VAC/50Hz.
Note2) When DVI-D is used for input, unless particularly designated, only Timing No. 14 (60kHz/75Hz, XGA75)
should be used for inspection.
Unless particularly designated, adjustment should be carried out with DVI-A input in factory mode and the
setting state should be as follows. (To enter factory mode, refer to 2.4.2 OSM operation method.)
BRIGHTNESS: MAX (220)
CONTRAST: CENTER (128)
SHARPNESS: CENTER (64)
AccuColor: NATIVE or sRGB
COLOR CONTROL: All of R, Y, G, C, B, M and S should be 0 (CENTER)
Before aging, signal is input for confirmation of each operation switch operation.
Moreover, unless particularly designated, Timing No. 14 should be used for adjustment.
2.6.1.1 Confirming operation of operation SW and functions
(1) Input the confirmation timing with the signal generator, and set the pattern to OP2.
(2) Confirm that the picture appears within 4 seconds after turning the vacation switch and the power switch ON.
(3) Confirm that Power-On Indicator is lit in green.
(4) Press (
£
) button to display the OSM picture.
(5) Select OSM POSITION with OSM, and press (+) / (-) button to confirm that OSM picture moves.
(6) After pressing RESET button, press NEXT button to confirm that the OSM picture returns to the appointed
position.
(7) Press EXIT button, and confirm that OSM picture disappears.
2.6.1.2 Inspection of picture
(1) Check the picture position and the inclination according to 2.5.2 Mechanism and appearance inspection.
(2) Check the picture defect according to 2-9 Liquid crystal display defect standards.
Model name
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...
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