Service Manuals, User Guides, Schematic Diagrams or docs for : Philips Monitor CD 2001 Monitor CD 2001 E-MANUALS Philips crt 107b2 pdf p15_18
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>> Download p15_18 documenatation <<Text preview - extract from the document Electrical Instructions 107B2 CM24 GSIII 15
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 R3587 so that the
"high- voltage voltmeter" reads 26.5 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 - Remove the "high-voltage voltmeter" from the picture tube.
are selected from the "service test software" package, see - Turn on the power again.
user 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 C2152 + 190.0V +/- 0.2VDC.
1792 x1334 60 kHz/83.64 Hz 1024 x 768 60 kHz/48.363 Hz SOURCE ACROSS C2154 + 79.0V +/- 1.0VDC.
1856 x1392 60 kHz/86.33 Hz 1024 x 768 70 kHz/56.476 Hz SOURCE ACROSS C2156 - 6.1V +/- 0.3VDC.
1920 x1440 60 kHz/90 Hz 1024 x 768 75 kHz/60 Hz SOURCE ACROSS C2160 + 13.4V +/- 0.5VDC.
640 x 350 70 kHz/31.469 Hz 1024 x 768 84.99 kHz/68.37 Hz
SOURCE ACROSS C2157 - 13.4V +/- 0.5VDC.
640 x 350 85 kHz/37.861 Hz 1280 x 1024 63.9 kHz/60Hz
640 x 480 100.1kHz/50.6 Hz(SNI)1152 x 864 75 kHz/67.5 Hz
640 x 480 60 kHz/31.469 Hz 1152 x 864 85 kHz/77.1Hz 4. General conditions for alignment
640 x 480 72.8 kHz/37.861 Hz 1152 x 870 75 kHz/68.681 Hz
640 x 480 75 kHz/37.5 Hz 1152 x 900 76 kHz/71.8 Hz(SUN) 4.1 During all alignments, supply a distortion free AC mains
640 x 480 85 kHz/43.269 Hz 1280 x1024 60kHz/63.98 Hz voltage to set via an isolating transformer with low internal
720 x 400 70 kHz/31.469 Hz 1280 x1024 75 kHz/79.97 Hz impedance.
720 x 400 85 kHz/37.927 Hz 1280 x1024 85 kHz/91.146 Hz 4.2 Align in pre-warmed condition, at least 30 minutes warm-
800 x 600 100.1 kHz/63.9 Hz(SNI) 1280 x960 60 kHz/60 Hz
up with nominal picture brightness.
800 x 600 60.3 kHz/37.879 Hz 1280 x960 85 kHz/85.938 Hz
800 x 600 72.12 kHz/48.077 Hz 1600 x1200 60 kHz/75 Hz 4.3 Purity, geometry and subsequent alignments should be
800 x 600 75 kHz/46.875 Hz 1600 x1200 65 kHz/81.25 Hz carried out in magnetic cage with correct magnetic field.
800 x 600 85 kHz/53.674 Hz 1600 x1200 70 kHz/87.5 Hz
832 x 624 74.6 kHz/493725 Hz(MAC) Northern hemisphere : H=0, V=430+/-50 mG, Z=0
Southern hemisphere : H=0, V=-520+/-50 mG, Z=0
0.2 With normal VGA card:
If not using the ATI card during repair or alignment, The service 4.4 All voltages are to be measured or applied with respect to
engineer also can use this service test software adapting with ground.
normal standard VGA adaptor and using standard VGA mode Note: Do not use heatsink as ground.
640 x 480, 31.5 kHz/60 Hz (only) as signal source. 4.5 Adjust function controls " " to center position except
0.3 AC/DC Measurement: for contrast control which should be set to MAX.
The measurements for AC waveform and DC figure is based
on 640 x 480 31.5 kHz/60 Hz resolution mode with test pattern 5. To access factory mode:
"gray scale".
Power input: 110V AC - Turn off monitor (don't turn off PC)
1. B+ supply voltage (3165) 79Vdc - Press " " and " " simultaneously on the front
- Apply a video signal in the 800 x 600 with 46.9 kHz/75Hz control panel, then press " ",wait till the OSD menu
mode. with characters " factory mode (below OSD menu)" come
- Select the "cross-hatch" pattern. on the screen of monitor.
- Set the brightness control and the contrast control to the
minimum position. 00115
- Pre-set trimming potentiometer R3165(B+) and R3587(EHT)
in mid-position.
- Set Vg2 (screen) to fully Counter-clockwise (zero
beamcurrent).
- Connect a dc voltmeter between the joint of C2152 and MODEL SELECT
ground (common ground). Factory MODEL SELECT
- Set the B+ trimming potentiometer 3165 so that the reading Mode
Indicator GS3 107B2 V1.41 20000630
on the dc voltmeter is 190.0 V +/- 0.2 Vdc.
2. High-voltage EHT (3587)
- Apply a video signal in the 1024 x 768 with 68.7 kHz/85Hz - If OSD menu disappears on the screen of monitor, press
mode. " " again (anytime), then the OSD menu comes on the
- Select the "cross-hatch" pattern. screen again.
- Set the brightness control and the contrast control to the - using " " : to select OSD menu.
minimum position. : to increase or decrease the setting.
- Turn off the power.
- Using " " to confirm the selection.
Back Forward
16 107B2 CM24 GSIII Electrical Instructions (Continued)
Go to cover page
6 To leave factory mode BIAS R G B : R(red) G(green) B(blue) cutoff
GAIN R G B : R(red) G(green) B(blue) gain
* After alignment of factory mode, turn off monitor (if you do V FOCUS : Vertical Focus
not turn off monitor, the OSD menu is always at the factory H FOCUS : Horizontal Focus
mode), then turn on monitor again (at this moment, the VLIN BAL : Vertical Linearity Balance
OSD menu goes back to user mode). USER : Horizontal size range
RASTER H: Horizontal raster Shift
RASTER V: Vertical raster Shift
7. Alignment of Vg2 cut-off point, white tracking (OSD HLIN : Horizontal Linearity
control) V LIN : Vertical Linearity
SUB : Zoom Control range
Equipment : 1. Video Test Generator-801GC (Quantum Data) SUB : Sub Contrast
2. Color-analyzer (Minolta CA-100) V OFFSET : Vertical offset
V GAIN : Vertical Gain
VG2 [(screen), at the bottom of the L.O.T.]. ABL : Auto Beam Limit
T CORNER: Corner Correctionof TOP
* Apply a video signal in the 1024 x 768 with 68.7 kHz/85 Hz
B CORNER: Corner Correctionof BOTTOM
mode,
LF : LightFrame
select the "full white pattern" (sizes 355 x 265 mm).
* Use color-analyzer (Minolta CA-100) to adjust cutoff and
(Before you make an adjustment of LF's value of intensity or
white uniformity.
sharp. Please make sure the LF function has enable
proerly by entering "Model Select" submenu that will show
OSD R/G/B cut-off and R/G/B gain can be accessed, with
you it is active or not). A red square near by LF means
initial data: 2
function active.Refer to the Fig. As below.
9300
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