Philips 26MF605W/17, Service Manual

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16 26MF605W/17
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Electrical Instructions
1. General points
1.1 During 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 - 132 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
Analog Video : 15 pin D-sub ,0.7 Vp-p linear, positive polarity
Separate Sync.: TTL level, separate, positive or negative polarity
Audio signal : 3.5mm stereo mini-jack
Level : -Nominal : 0.5 V rms.
- Maximum : 1.5 V rms.
-Impedance > 10 k
W
.
Signal source: pattern generator format as attachment
(table 1 to 5 ) Reference generator : CHROMA 2200 or 2250
2.1.2 TV Signal type
RF Signal : Aerial input / 10mV(80dBuV)
Video signal : Video( RCA jack, CVBS input) / 1Vpp (300mV-sync,
700mV-video.) S video input / 1VppY-signal, 300mVpp C-signal
COMP Video( RCA jack , YPbPr input) / 1Vpp Y signal ,
350mVpp Pb , Pr signal
DVI : Digital interface with 4 channels TMDS signal
Audio signal : Audio (1) R/L( RCA jack ) for AV IN1 ( share with
Video and S-video1 ).
Level: - Nominal
: 0.5 V rms.
- Maximum : 1.5 V rms.
- Impedance > 10 k
W
.
Audio (2) R/L( RCA jack ) for AV IN2 (share with
Video2 and S-video2).
Level: - Nominal : 0.5 V rms.
- Maximum : 1.5 V rms.
- Impedance > 10 k
W
.
Audio (3) R/L ( RCA jack )for AV IN3 (share with
Video3 and Comp video).
Level: - Nominal : 0.5 V rms.
- Maximum : 1.5 V rms.
- Impedance > 10 k
W
.
Audio (4) R/L( RCA jack ) for DVI IN.
Level: - Nominal : 0.5 V rms.
- Maximum : 1.5 V rms.
- Impedance > 10 k
W.
2.1.3 PVR output (CVBS output):
Video: CVBS output 1Vpp / Impedance : 75
W
.
Audio: R/L output (from CVBS)
Level: - Nominal : 0.5 V rms.
- Maximum : 1.5 V rms.
- Impedance < 1 k
W
.
2.1.4 Headphone
Audio: R/L output -10mW at 32
W
.
3.5mm stereo jack with switch
Impedance is between 8 and 600
W
.
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
58
-
63 Hz, and horizontal scan range of 30 - 50 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 IBM VGA 640*480 59.940
2 36.000 35.156 VESA 800*600 56.250
3 40.000 37.879 VESA 800*600 60.317
4 65.000 48.363 VESA 1024*768 60.004
5 74.500 44.772 WXGA 1280*720 59.855 CVT
5 79.500 47.776 WXGA 1280*768 59.87 CVT
Resolution recommend on 1280 X 720 @ 60Hz
2.3 TV input signal Channel and pattern for NAFTA
model (Table1)
Signal Distribution Table (NTSC)
Table 1
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