Speaker; Visual Characteristics; Brightness; Color Temperature Adjustment - Philips 19B4LPCS/00 Service Manual

70 19B4LP LCD

3.20 Speaker

1) Input signal: 1000 mVrms
Loudspeaker (Impedance: 5.25 [F1] Ohm +/-15%): 1.5W+ 1.5 W (typical), stereo for RMS
2) Earphone
Stereo > 50mVrms for headphone of 32.
The loudspeakers are muted when earphone is plugged in.
4

Visual characteristics

4.1 Test conditions
Unless otherwise specified, this specification is defined in following conditions.
(1) Input signal: As defined in 3.3, 1280 x 1024 non-interlaced mode (1280 x 1024 @60 Hz), signal sources
(2) Luminance setting: controls to be set to 300 nits with full screen 100 % duty cycle white signal
(3) Warm up: more than 30 minutes after power on with signal supplied.
(4) Ambient light: 400 -- 600 lux.
(5) Ambient temperature: 20 ± 5 C
4.2

Brightness

Follow Panel specification.
4.3

Color temperature adjustment

There are three factory preset white color 9300K, 6500K, sRGB.
Apply full white pattern, with brightness in 100 % position and the contrast control at 50 % position.
The 1931 CIE Chromaticity (color triangle) diagram (x ,y) coordinate for the screen center should be:
CIE coordinates
11500K
9300K
8200K
7500K
6500K
sRGB
must have 75 ohm output impedance.

Product specification

(x,y)
x = 0.270 ± 0.02
y = 0.281 ± 0.02
x = 0.283 ± 0.02
y = 0.297 ± 0.02
x = 0.291 ± 0.02
y = 0.306 ± 0.02
x = 0.298 ± 0.02
y = 0.314 ± 0.02
AUO :
x = 0.313 ± 0.006
y = 0.329 ± 0.006
LGD :
follow panel spec
x = 0.313 ± 0.02
PerfecTune II
PerfecTune II
PerfecTune II
PerfecTune II
No PerfecTune II
PerfecTune II