HP L1502 User Manual

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HP L2025
7
HP L2025
HP L2025
17
HP Ll502 LCD
Electrical Instructions
1. General points
1.1 During the test andmeasuring, supply a distortion
free AC mains voltagetotheapparatus via an isolated
transformer with low internal resistance.
1.2 All measurements mentionedhereafter are carried out
at a normal mains voltage (90 - 132 VAC for USA version,
195 -264 VAC for EUROPEAN version, or 90 - 264 VAC
for the model withfull range power supply,
unless
otherwise stated.)
1.3 All voltages are to be measured or appliedwith
respect to ground, unless otherwise stated.
Note:don’t use heat-sink as ground.
1.4 The test has to be done on a complete set including
LCD panel after 30 minutes
warm-up at least in a roomwith temperature
of25+/-5degree C.
1.5 All values mentioned in this test instruction are only
app
licable of a well aligned apparatus,with correct signal.
1.6 The letters symbols (B) and(S)placedbehind the test
instruction denotes
(B): carried out 100% inspection at assembly line
(S): carried out test by sampling
1.7 The white balance (color temperature)has to be
tested in subdued lighted room.
1.8 Repetitive power on/off
cycle are allowed exceptitshould
beavoidedwithin 6 sec.
Allowed signal modes list:
2. Input signal
2.1 Signal type
Video:0.7 Vpp linear,positive polarity
Sync. : TTL level, separate,positiveornegative polarity
Reference generator: CHROMA 2200 or 2250
Table A
TABLE A
FACTORY PRESETDISPLAY MODES
3. DisplayAdjustment (B)
Access to factorymode.
Check "CPU version " if it is not right version, then ISP new one.
After pre-check, aging1hour at least.
ProgrammingAnalog DDC Data into Monitor.
3.1Auto color adjustment
Apply a 640 * 480 / 60Hz signal with16level grey test pattern,
set brightness control at 100%, and contrast control at 50%.
Adjust the R. G. B
offset, andgain to calibrate the color smoothly
and64-grey level distinguishable.
3.
2
Color temperature adjustment
Apply a 48.36kHz / 60Hz signal withwhite pattern.
The 1931 CIE chromaticity (x, y) coordinates shall be:
Set brightness control at 100% and contrast control at 50%.
Adjust the R.G.B gain to reach special color temperature on center
of screen.K
eep one color fixedgain to maximum at least.
Use Minolta CA-110 for color coordinates and luminance check.
3.3 FactoryReset
After finishing all theadjustment, select “Factory
Reset”function to recall:
Doanautomatic Auto-Adjustment
Set Brightness = 100
Set Contrast =50
Set Color = 6500K-sRGB
Set CustomColor (R.G.B) = 100
3.4 Main Menu FactoryDefault Values
The OSD shall havethe followingfactorydefault values:
Lan
guage = English
OSD Cotrol:
Horizontal OSD position =50
Vertical OSD position =50
OSD timeout =30s
Management:
Power Saver =ON
Power On Recall =ON
Mode display=OFF
SleepTimer =OFF
Menu = BASIC

HP L1502 Specifications

General

Brand	HP
Model	L1502
Category	Monitor
Language	English