Service Manuals, User Guides, Schematic Diagrams or docs for : Philips Monitor CD 2001 Monitor CD 2001 E-MANUALS Philips crt 109p2 PDF p13~15
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Electrical Adjustments 109P2 GS3 CM25 13
9 Go to cover page
0. General - Connect a "high-voltage voltmeter" between the high-
voltage connection of the picture tube and earth.
When carry-out the electrical settings in many cases a video - Turn on the power.
signal must be applied to the monitor. A computer with : - Set the EHT trimming potentiometer 3698 so that the "high-
voltage voltmeter" reads 25.0 kV +/- 0.2 kV .
- ATI GPT-1600 (4822 397 10065), Mach 64 (up to 107kHz)
- Turn off the power.
are used as the video signal source. The signal patterns are - Remove the "high-voltage voltmeter" from the picture tube.
selected from the "service test software" package, see user - Turn on the power again.
guide 4822 727 21046 (GPT-1600). 3. Monitor the following auxiliary voltages.
0.1 This monitor has 35 factory-preset modes as below SOURCE ACROSS C2362 + 8.0V +/- 0.5VDC.
. SOURCE ACROSS C2143 + 5.0V +/- 0.5VDC.
31.469 KHz/70.087 Hz, 640 X 350 81.250 KHz/65.000 Hz, 1600 X 1200
31.469 KHz/59.941 Hz, 640 X 480 83.640 KHz/59.999 Hz, 1792 X 1344 SOURCE ACROSS C2362 +12.0V+/- 0.5VDC.
31.468 KHz/70.084 Hz, 720 X 400 85.938 KHz/85.002 Hz, 1280 X 960 SOURCE ACROSS C2134 +15.0V +/- 1.0VDC.
37.5 KHz/75 Hz, 640 X 480 86.333 KHz/59.995 Hz, 1856X 1392 SOURCE ACROSS C2137 - 15.5V +/- 1.0VDC.
37.861 KHz/72.810 Hz, 640 X 480 87.500 KHz/70.000 Hz, 1600 X 1200 SOURCE ACROSS D6148"+" 6.3 V+/- 0.5VDC.
37.861 KHz/85.081 Hz, 640 X 350 90.000 KHz/60.000 Hz, 1920 X 1440
37.879 KHz/60.317 Hz, 800 X 600 91.146 KHz/85.024 Hz, 1280 X 1024 SOURCE ACROSS C2131 + 210.0V +/-1.5VDC.
37.927 KHz/85.039 Hz, 720 X 400 93.750 KHz/75.000Hz, 1600 X 1200 SOURCE ACROSS C2133 + 82.7 V +/-2.0VDC.
43.269 KHz/85.008 Hz, 640 X 480 106.250KHz/85.00 Hz, 1600 X 1200
46.875 KHz/75.000 Hz, 800 X 600 106.270KHz/74.997Hz, 1792 X 1344
48.077 KHz/72.188 Hz, 800 X 600
48.363 KHz/60.004Hz, 1024X 768 4. General conditions for alignment
49.722 KHz/74.546Hz, 832 X 624 4.1 During all alignments, supply a distortion free AC mains
50.628 KHz/100.10 Hz, 640 X 480
53.674 KHz/85.061 Hz, 800 X 600 voltage to set via an isolating transformer with low internal
56.476 KHz/70.069 Hz,1024X 768 impedance.
60.000 KHz/60.000 Hz,1280 X 960 4.2 Align in pre-warmed condition, at least 30 minutes warm-
60.023KHz/75.029Hz, 1024 X 768
63.923 KHz/100.00 Hz, 800 X 600 up with nominal picture brightness.
63.981KHz/60.020Hz, 1280 X 1024 4.3 Purity, geometry and subsequent alignments should be
67.500 KHz/75.00Hz, 1152 X 864 carried out in magnetic cage with correct magnetic field.
68.677KHz/84.997Hz, 1024 X 768
68.681KHz/74.979Hz, 1152 X 870
71.809KHz/76.15 Hz, 1152 X 900 Northern hemisphere : H=0, V=430+/-50 mG, Z=0
75.000KHz/60.000 Hz, 1600 X 1200
79.976KHz/75.024 Hz, 1280 X 1024 Southern hemisphere : H=0, V=-520+/-50 mG, Z=0
Equatorial Support : H=0, V=0 mG, Z=0
0.2 With normal VGA card:
4.4 All voltages are to be measured or applied with respect to
If not using the ATI card during repair or alignment, The
ground.
service engineer also can use this service test software
Note: Do not use heatsink as ground.
adapting with normal standard VGA adaptor and using
4.5 Adjust function controls " " to center position except
standard VGA mode 640 x 480, 31.5 kHz/60 Hz (only) as
for contrast control which should be set to MAX.
signal source.
0.3 AC/DC Measurement:
5. To access factory mode:
The measurements for AC waveform and DC figure is based
on 640 x 480 31.5 kHz/60 Hz resolution mode with test
- Turn off monitor (don't turn off PC)
pattern "gray scale".
- Press " " and " " simultaneously on the front
Power input: 110V AC
control panel, then press " ",wait till the OSD menu
1. B+ supply voltage (3157) 210Vdc
with characters " factory mode (below OSD menu)" come
- Apply a video signal in the 1024 x 768 with 68.7 kHz/85Hz
on the screen of monitor.
mode.
- Select the "cross-hatch" pattern. 00195
- Set the brightness control and the contrast control to the
minimum position.
- Pre-set trimming potentiometer 3157(B+) and 3698(EHT)
in mid-position.
- Set Vg2 (screen) to fully Counter-clockwise (zero
beamcurrent).
- Connect a dc voltmeter between the joint of capacitor 2131 109P V3.08 000601
and ground (common ground).
- Set the B+ trimming potentiometer 3157 so that the reading
- If OSD menu disappears on the screen of monitor, press
on the dc voltmeter is 210 V +/- 0.5 Vdc.
" " again (anytime), then the OSD menu comes on the
2. High-voltage EHT (3698)
screen again.
- Apply a video signal in the 1024 x 768 with 68.7 kHz/85Hz
- using " " : to select OSD menu.
mode.
: to increase or decrease the setting.
- Select the "cross-hatch" pattern.
- Set the brightness control and the contrast control to the
- Using " " to confirm the selection.
minimum position.
- Turn off the power.
Back Forward
14 109P2 GS3 CM25 Electrical Adjustments (Continued)
9 Go to cover page
6 To leave factory mode
* 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).
107
TIMER Set OSD display time. Fig. 2.2 Fig. 2.3
7. Alignment of Vg2 cut-off point, white tracking (OSD BIAS R G B : R(red) G(green) B(blue) cutoff
control) GAIN R G B : R(red) G(green) B(blue) gain
V FOCUS : Vertical Focus
H FOCUS : Horizontal Focus
Equipment : 1. Video Test Generator-801GC (Quantum Data)
VLIN BAL : Vertical Linearity Balance
2. Color-analyzer (Minolta CA-100) USER : Horizontal size range
RASTER H: Horizontal raster Shift
VG2 [(screen), at the bottom of the L.O.T.]. RASTER V: Vertical raster Shift
* Apply a video signal in the 1024 x 768 with 68.7 kHz/85 Hz HLIN : Horizontal Linearity
mode, V LIN : Vertical Linearity
select the "full white pattern" (sizes 355 x 265 mm). SUB : Zoom Control range
* Use color-analyzer (Minolta CA-100) to adjust cutoff and SUB : Sub Contrast
V OFFSET : Vertical offset
white uniformity.
V GAIN : Vertical Gain
ABL : Auto Beam Limit
OSD R/G/B cut-off and R/G/B gain can be accessed, with T CORNER: Corner Correction of TOP
initial data: B CORNER: Corner Correction of BOTTOM
CONVERGENCE(V H R):CONVERGENCE Correction of Vertical ,
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