Philips BDL4221V/00, Service Manual

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22 420WN6 LCD TV
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Electrical Instructions
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 : 0.5 V rms.
- 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).
Level: - Nominal : 0.5 V rms.
- Maximum : 1.5 V rms.
- Impedance > 10 kohm.
Audio (2) R/L for SCART IN
Level: - Nominal : 0.5 V rms.
- Maximum : 1.5 V rms.
Impedance > 10 k ohm.
Audio (3) R/L for HD Video IN.
Level: - Nominal : 0.5 V rms.
-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.
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
(MHz)
H.freq
(KHz)
Mode Resolution V.freq
(Hz)
Remark
1 25.175 31.469 VGA-1 640*350 70.086
2 25.175 31.469 IBM VGA 640 * 480 59.940
3 31.500 37.500 VGA 640 * 480 75.000
4 28.322 31.469 VGA 720*400 70.087
5 36.000 35.156 VESA 800 * 600 56.250
6 40.000 37.879 VESA 800 * 600 60.317
7 49.500 46.875 VESA 800 * 600 75.000
8 65.000 48.363 VESA 1024 * 768 60.004
9 78.750 60.023 VESA 1024 * 768 75.029
10 74.500 47.772 WXGA 1280 * 720 59.855 CVT
11 79.500 47.776 WXGA 1280 * 768 59.870 CVT
12 84.75 47.720 VSEA 1360 * 768 59.799 CVT
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
TV System
Pattern
A 03 61.25MHz 65.75MHz NTSC M Color Circle
A 06 83.25MHz 87.75MHz NTSC M Red Raster
A 09 187.25MHz 191.75MHz NTSC M Circle Pattern
A 11 199.25MHz 203.75MHz NTSC M Cross Hatch
A 13 211.25MHz 215.75MHz NTSC M
Two White
Window
A 52 699.25MHz 703.75MHz NTSC M Color Bar
A 69 801.25MHz 805.75MHz NTSC M 100% White
C 70 499.25MHz 503.75MHz NTSC M Checkerboard
Table 2.3.1