Philips DELLP1230 Service Manual page 16

16
DELL P1230 M25P
Display Mode Horizontal
Frequency(kHz)
VESA 640 480
31.5
VESA 640
43.3
VESA 800 600 53.7
VESA 1024 768 60.0
VESA 1024 768 68.7
VESA 1280 1024 80.0
VESA 1280 1024
91.1
VESA 1600 1200
93.8
VESA 1600 1200
106.3
+ 8.0V SOURCE ACROSS C2362 +
+ 5.0V SOURCE ACROSS C2143 +
+ 12.0V SOURCE ACROSS C2361 + 12.0V +/- 0.5 VDC
+ 15.0V SOURCE ACROSS C2134 + 15.1V +/- 1.0 VDC
- 15.0V SOURCE ACROSS C2137 - 15.4V +/- 1.0 VDC
+ 6.3V SOURCE ACROSS D6143 +
+230.0V SOURCE ACROSS C2131 + 230.0V +/- 0.5 VDC
+ 80.0V SOURCE ACROSS C2133 + 82.0V +/- 2.0 VDC
4.General conditions for alignment
4.1During all alignments , supply a distortion free AC mains
voltage to set via an isolating transformer with low internal impedance.
4.2All measurements are carried out at nominal mains voltage,
unless otherwise stated.
4.3Align in pre-warmed condition, at least 30 minutes
warm-up with nominal picture brightness.
4.4Purity, convergence, geometry and subsequent alignments should be
carried out in magnetic cage with correct magnetic field.
Northern hemisphere : H = 0, V = 430mG, Z = 0 .
Southern hemisphere : H = 0, V = - 520mG, Z = 0 .
Equatorial Support : H = 0, V = 0 mG, Z = 0.
4.5All voltages are to be measured or applied with respect to ground,
unless otherwise stated.
Note: Do not use heatsink as ground.
4.6Any external voltage sources should have a low internal impedance.
4.7Adjust function controls to center position except for contrast
control which should be set to MAX.
4.8The white balance and purity has to be adjusted in sub-dudedly lighted room.
4.9All alignments have to be done in a room with a temperature of 25 +/- 5 C.
4.10Adjust picture tilt for correct TOP/BOTTOM lines Via I2Cbus.
(Picture tube should be mounted without tilt CRT cabinet)
4.11All the alignment can be done only when set is working in 'factory mode'
pressing the 'Right (+)' and 'left (-)' keys together while power on the
test set, or by CAA test controller.
Prepare the test set in 'factory mode' before the set alignment.
Vertical Pixel Sync Polarity
Frequency(Hz) Clock(MHz) (Horizontal/vertical)
59.9 25.2 -/-
85.0 36.0 -/-
85.1 56.3 +/+
75.0 78.8 +/+
85.0 94.5 +/+
75.0 135 +/+
85.0 157.5 +/+
75.0 202.5 +/+
85.0 229.5 +/+
8.0V +/- 0.5 VDC
5.0V +/- 0.5 VDC
6.1V +/- 0.5 VDC
To access factory mode
5.1.Turn off monitor (do not turn off PC)
5.2. Press " " and " "simultaneously on the frond control
panel, then press " " ,wait till the OSD menu with characters
DELL P1230 VO.15 20031119(below OSD menu)" come on the
screen of monitor.
D E L L P1 2 3 0 V O . 1 5 2 0 0 3 1 1 1 9
5.3.If OSD menu disappears on the screen of monitor, press "
again (anytime), then the OSD menu comes on the screen again.
5.4.Using " ":to select OSD menu.
5.5.Using " ":to increase or decrease the setting.
5.6.Using" "to access/confirm the selection
To leave factory mode
5.7 After alignment of factory mode, turn off monitor(if you do not
turn off monitor, the OSD menu is always at the factory mode),
then turn on monitor again(at this moment, the OSD menu goes
back to user mode).
6.Picture geometry setting
Correct the test image to display in parallel with front top plastic
6.1
bezel by adjusting the Rotate item in OSD Adjust shape.
Repeatedly do the adjustments from 6.2 to 6.13 to correct the geometry of this
mode and fix the position of horizontal raster on display screen.
6.2 Adjust Raster H (in factory mode) to make the horizontal raster
symmetrical display at center of the screen.
6.3 Adjust the H -Width to 392mm.
6.4 Adjust the H-linearity to get optimum horizontal deflection
linearity display block to block.
6.5 Adjust the H-Phase to center position.
6.6 Adjust the side curve – Pincushion & Balance to
get optimum right vertical lines.
6.7 Adjust the side angles – Trapezoid & Parallelogram to get optimum
right vertical lines.
6.8 Adjust the Cor ner Top & Bottom to get optimum right vertical lines.
6.9 Adjust the Vertical size to 294 mm.
6.10 Adjust the vertical linearity to get optimum vertical deflection
linearity display block to block.
6.11Adjust the Vertical phase to center.
6.12 Repeatedly do the adjustments from 6.3 to 6.11 to
the geometry performances and meet the specification (sheet 161) request.
6.13Exit OSD and auto saves the alignment data.
6.14 Repeat the procedure of 6.2 - 6.13 to all
inspection (preset) & alignment modes listed in the following Factory timing
modes table (total 11 modes) until all have been adjusted completely.
01379
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optimise