Electrical Instructions - Philips BDL4221V/00 Service Manual

22
420WN6 LCD TV
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1. General points
1.1During the test and measuring, supply a distortion free AC
mains voltage to the apparatus via an isolated transformer
with low internal resistance.
1.2 All measurements mentioned hereafter are carried out at a
Normal mains voltage (90 - 142 VAC for NAFTA version,
195 -264 VAC for EUROPEAN version, or 90 - 264 VAC for
the model with full range power supply, unless otherwise stated.)
1.3 All voltages are to be measurement or applied with respect
to ground, unless otherwise stated.
1.4 The test has to be done on a complete set including LCD
panel in a room with temperature of 25 +/- 5 degree C.
1.5 All values mentioned in these test instruction are only applicable
of a well aligned apparatus, with correct signal.
1.6 The letters symbols (B) and (S) placed behind 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 except it should be
avoided within 6 sec.
2. Input and output signal
2.1.1 PC Signal type
a.Analog Video : 15 pin D-sub ,0.7 Vp-p linear, positive
polarity & separate sync.( TTL level, positive or negative polarity)
b.Digital Video : DVI-Digital interface with 4 channels TMDS signal
c.Audio signal : 3.5mm stereo mini-jack
Level: Nominal
- Maximum : 1.5 V rms.
-Impedance > 10 k ohm.
d.Signal source: Pattern generator format as the SPEC.
Reference generator : CHROMA 2200 or 2250
2.1.2 TV Signal type(Video Model: w/o RF signal input)
RF Signal : Aerial input / 10mV(80dBuV)
Video signal : CVBS input ( RCA jack) / 1Vpp (300mV-sync,
700mV-video.)
S video input / 1VppY-signal, 300mVpp C-signal
SCARTx1: CVBS, RGB signal
HD in(YPbPr input)/ 1Vpp Y signal, 350mVpp Pb,Pr signal
HDCP:Digital interface with 4 channels TMDS signal
Audio signal : Audio (1) R/L for AV IN(AV and S-Video).
Audio (2) R/L for SCART IN
Level: - Nominal
- Maximum : 1.5 V rms.
Impedance > 10 k ohm.
Audio (3) R/L for HD Video IN.
Level: - Nominal
-Maximum : 1.5 V rms.
- Impedance > 10 k ohm.
2.1.3 CVBS output:
Video: CVBS output 1Vpp / Impedance : 75ohm
Audio: R/L output (from CVBS)
Level: - Nominal : 0.5 V rms.
- Maximum : 1.5 V rms.
- Impedance < 1 kohm.
2.1.4 Headphone
Audio: R/L output -10mW at 32ohm.
3.5mm stereo jack with switch
Impedance is between 8 and 600 ohm.

Electrical Instructions

: 0.5 V rms.
Level: - Nominal : 0.5 V rms.
- Maximum : 1.5 V rms.
- Impedance > 10 kohm.
: 0.5 V rms.
: 0.5 V rms.
2.2 PC Input signal mode
2.2.1 PRESET VIDEO RESOLUTION
The analogue color LCD monitor must be capable of displaying
standard resolutions within the vertical frequency range of 50 - 75 Hz,
and horizontal scan range of 30 - 63 KHz .
Use the CHROMA-2250 generator as the standard signal timing source.
Dot rate H.freq Mode Resolution V.freq
(MHz) (KHz)
1 25.175 31.469 VGA-1
2 25.175 31.469 IBM VGA 640 * 480
3 31.500 37.500 VGA
4 28.322 31.469 VGA
5 36.000 35.156 VESA
6 40.000 37.879 VESA
7 49.500 46.875 VESA
8 65.000 48.363 VESA
9 78.750 60.023 VESA
10 74.500 47.772 WXGA 1280 * 720 59.855
11 79.500 47.776 WXGA 1280 * 768 59.870
12 84.75 47.720 VSEA
Resolution recommend on 1360x768 @ 60Hz
Remark:Mode 1,3,4,5,7,9,11 will run auto adjustment only,
and W/O QA checking
2.3 TV input signal Channel and pattern
2.3.1 Table 2.3.1 for NAFTA model
Signal Distribution Table (NTSC)
Frequency Carriers
CH
Video Sound
A 03 61.25MHz 65.75MHz
A 06 83.25MHz 87.75MHz
A 09 187.25MHz 191.75MHz
A 11 199.25MHz 203.75MHz
A 13 211.25MHz 215.75MHz
A 52 699.25MHz 703.75MHz
A 69 801.25MHz 805.75MHz
C 70 499.25MHz 503.75MHz
Table 2.3.1
Remark
(Hz)
640*350 70.086
59.940
640 * 480 75.000
720*400 70.087
800 * 600 56.250
800 * 600 60.317
800 * 600 75.000
1024 * 768 60.004
1024 * 768 75.029
CVT
CVT
1360 * 768 59.799 CVT
TV System
Pattern
NTSC M Color Circle
NTSC M Red Raster
NTSC M Circle Pattern
NTSC M Cross Hatch
Two White
NTSC M
Window
NTSC M Color Bar
NTSC M 100% White
NTSC M Checkerboard