Philips p15_18 Datasheet

Page 1

Electrical Instructions

0. General

When carry-out the electrical settings in many cases a video signal must be applied to the monitor. A computer with :

- ATI GPT-1600 (4822 397 10065), Mach 64 (up to 107kHz)

are used as the video signal source. The signal patterns are selected from the "service test software" package, see user guide 4822 727 21046 (GPT-1600).

0.1 This monitor has 35 factory-preset modes as below:

1792 x1334 60 kHz/83.64 Hz 1024 x 768 60 kHz/48.363 Hz 1856 x1392 60 kHz/86.33 Hz 1024 x 768 70 kHz/56.476 Hz 1920 x1440 60 kHz/90 Hz 1024 x 768 75 kHz/60 Hz 640 x 350 70 kHz/31.469 Hz 1024 x 768 84.99 kHz/68.37 Hz 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

640 x 480

640 x 480 75 kHz/37.5 Hz 1152 x 900 76 kHz/71.8 Hz(SUN) 640 x 480 85 kHz/43.269 Hz 1280 x1024 60kHz/63.98 Hz

0 x 400 70 kHz/31.469 Hz 1280 x1024 75 kHz/79.97 Hz

72 720 x 400 85 kHz/37.927 Hz 1280 x1024 85 kHz/91.146 Hz 800 x 600 100.1 kHz/63.9 Hz(SNI) 1280 x960 60 kHz/60 Hz 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 kHz/75 Hz 800 x 600 75 1600 x1200 65 800 x 600 85 832 x 624 74.6 kHz/493725 Hz(MAC)

0.2 With normal VGA card: If not using the ATI card during repair or alignment, The service engineer also can use this service test software adapting with normal standard VGA adaptor and using standard VGA mode 640 x 480, 31.5 kHz/60 Hz (only) as signal source.

0.3 AC/DC Measurement: The measurements for AC waveform and DC figure is based on 640 x 480 31.5 kHz/60 Hz resolution mode with test pattern "gray scale". Power input: 110V AC

1. B+ supply voltage (3165) 79Vdc

- Apply a video signal in the 800 x 600 with 46.9 kHz/75Hz mode.

- Select the "cross-hatch" pattern.

- Set the brightness control and the contrast control to the minimum position.

- 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 ground (common ground).

- Set the B+ trimming potentiometer 3165 so that the reading 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 mode.

- Select the "cross-hatch" pattern.

- Set the brightness control and the contrast control to the minimum position.

- Turn off the power.

72.8 kHz/37.861 Hz 1152 x 870 75 kHz/68.681 Hz

1600 x1200 60 kHz/46.875 Hz kHz/81.25 Hz kHz/53.674 Hz 1600 x1200 70 kHz/87.5 Hz

107B2 CM24 GSIII

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- Connect a "high-voltage voltmeter" between the highvoltage connection of the picture tube and earth.

- Turn on the power.

- Set the EHT trimming potentiometer R3587 so that the "high- voltage voltmeter" reads 26.5 KV +/- 0.2 KV .

- Turn off the power.

- Remove the "high-voltage voltmeter" from the picture tube.

- Turn on the power again.

3. Monitor the following auxiliary voltages.

SOURCE ACROSS C2152 + 190.0V +/- 0.2VDC. SOURCE ACROSS C2154 + 79.0V +/- 1.0VDC. SOURCE ACROSS C2156 - 6.1V +/- 0.3VDC. SOURCE ACROSS C2160 + 13.4V +/- 0.5VDC. SOURCE ACROSS C2157 - 13.4V +/- 0.5VDC.

4. General conditions for alignment

4.1 During all alignments, supply a distortion free AC mains voltage to set via an isolating transformer with low internal impedance.

4.2 Align in pre-warmed condition, at least 30 minutes warmup with nominal picture brightness.

4.3 Purity, geometry and subsequent alignments should be carried out in magnetic cage with correct magnetic field.

Northern hemisphere : H=0, V=430+/-50 mG, Z=0 Southern hemisphere : H=0, V=-520+/-50 mG, Z=0

4.4 All voltages are to be measured or applied with respect to ground.

Note: Do not use heatsink as ground.

4.5 Adjust function controls " " to center position except for contrast control which should be set to MAX.

5. To access factory mode:

- Turn off monitor (don't turn off PC)

- Press " " and " " simultaneously on the front control panel, then press " ",wait till the OSD menu with characters " factory mode (below OSD menu)" come on the screen of monitor.

00115

Factory Mode Indicator

- If OSD menu disappears on the screen of monitor, press " " again (anytime), then the OSD menu comes on the screen again.

- using " " : to select OSD menu.

- Using " " to confirm the selection.

MODEL SELECT

GS3 107B2 V1.41 20000630

: to increase or decrease the setting.

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107B2 CM24 GSIII

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Electrical Instructions (Continued)

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).

7. Alignment of Vg2 cut-off point, white tracking (OSD control)

Equipment : 1. Video Test Generator-801GC (Quantum Data)

2. Color-analyzer (Minolta CA-100)

VG2 [(screen), at the bottom of the L.O.T.].

* Apply a video signal in the 1024 x 768 with 68.7 kHz/85 Hz

mode,

select the "full white pattern" (sizes 355 x 265 mm).

* Use color-analyzer (Minolta CA-100) to adjust cutoff and

white uniformity.

OSD R/G/B cut-off and R/G/B gain can be accessed, with initial data:

9300 K

R cutoff = 40%, R gain = 65% (I C) G cutoff = 40%, G gain = 65% (I C) B cutoff = 40%, B gain = 65% (I C)

6500 K

R cutoff = 40%, R gain = 55% (I C) G cutoff = 40%, G gain = 55% (I C) B cutoff = 40%, B gain = 55% (I C)

5500 K R cutoff = 40%, R gain = 55% (I C) G cutoff = 40%, G gain = 55% (I C) B cutoff = 40%, B gain = 55% (I C)

Brightness = 50%, Sub-Contrast = 85%, ABL = 70% (I C)

Step 1: To select the character "GS3 107B2 V1.41 20000630"

as shown in Fig. 2.1, press " " to access the OSD

menu for R/G/B gain & cutoff as shown in Fig. 2.2. Step 2: Press " " for function selection as shown in Fig 2.3. Step 3: Use " " to increase or decrease the value as

shown in Fig. 2.3.

00115

Fig.2.1

MODEL SELECT

BIASRGB:R(red) G(green) B(blue) cutoff GAINRGB:R(red) G(green) B(blue) gain V FOCUS : Vertical Focus H FOCUS : Horizontal Focus VLIN BAL : Vertical Linearity Balance USER : Horizontal size range RASTER H: Horizontal raster Shift RASTER V: Vertical raster Shift HLIN : Horizontal Linearity V LIN : Vertical Linearity SUB : Zoom Control range SUB : Sub Contrast V OFFSET : Vertical offset V GAIN : Vertical Gain ABL : Auto Beam Limit T CORNER: Corner Correctionof TOP B CORNER: Corner Correctionof BOTTOM

LF : LightFrame

(Before you make an adjustment of LF's value of intensity or

sharp. Please make sure the LF function has enable proerly by entering "Model Select" submenu that will show you it is active or not). A red square near by LF means function active.Refer to the Fig. As below.

MODEL SELECT

109S2 92K

107B2 92K

105B2 69K

105S2 60K

109S2 CPT

SWDDC

After pressing " " ,then Press " "

7.1 Connect the video input, set brightness control at 50% and contrast at minimum position (OSD), Vg2 at Minimum (counter clockwise, and ABL (OSD) at 50% position.

Slowly increase Vg2 voltage until light output is at

0.1 Ft-L +/- 0.01Ft-L (Y=0.1 Ft-L, on the screen of CA-100).

7.2 (The screen of monitor is dark now)

: Press " " to show the OSD menu as shown in Fig. 2.1. : Select the character "GS3 107B2 V1.41 20000630" to

access the R/G/B adjustment as shown in Fig. 2.2 and Fig. 2.3.

: Adjust the cutoff of R/G/B to get 9300K

(x=0.283 +/- 0.015, y=0.297 +/- 0.015), and brightness output at 0.07 +/- 0.01 Ft-L (Y=0.07Ft-L).

107B2 V1.41 20000630

9300 BIAS R G B GAINRGB 6500 BIAS R G B GAINRGB 5500 BIAS R G B GAINRGB

FOCUS(H V) VLINBAL USER

RASTER(H V) LIN ( H V ) SUB V(OFFSET GAIN) SUB CORNER(T B) ABL

LF(BRIGH SHARP)

EXIT 135

Fig. 2.2

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9300 BIAS R G B GAINRGB 6500 BIAS R G B GAINRGB 5500 BIAS R G B GAINRGB

FOCUS(H V) VLINBAL USER

RASTER(H V) LIN ( H V ) SUB V(OFFSET GAIN) SUB CORNER(T B) ABL LF(BRIGH SHARP) EXIT 135

Fig. 2.3

7.3 : Press " " to set contrast at maximum (100%).

: Adjust gain of R/G/B to get 9300K

(x=0.283 +/- 0.015, y=0.297 +/-0.015, don't care about the Y value)

7.4 Apply a small white square 10 x 10 cm pattern, brightness

set to center (50%), and contrast at maximum (100%), adjust Sub-contrast control (OSD) to reach 41 +/- 1 Ft-L.

7.5 Apply full white pattern at 9300K, adjust ABL (OSD) to

reach 30+/- 1 Ft-L (contrast at maximum 100%, brightness at center 50%).

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Electrical Instructions (Continued)

107B2 CM24 GSIII

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7.6 : Select the 6500K colour temperature as shown in Fig.

2.2.

: Adjust the R/G/B cutoff and R/G/B gain as shown in

procedure 7.2~7.3 to get R/G/B cutoff x= 0.313 +/- 0.015

y= 0.329 +/- 0.015

R/G/B gain x= 0.313 +/- 0.015

y= 0.329 +/- 0.015 Y= 41 +/- 1 Ft-L

7.7 : Select the 5500K colour temperature as shown in Fig.

2.2.

: Adjust the R/G/B cutoff and R/G/B gain as shown in

procedure 7.2~7.3 to get R/G/B cutoff x= 0.332 +/- 0.015

y= 0.347 +/- 0.015

R/G/B gain x= 0.332 +/- 0.015

y= 0.347 +/- 0.015 Y= 33 +/- 1 Ft-L

8. Picture geometry setting (factory pre-set modes)

- Apply a video signal with cross-hatch pattern.

- Apply a video signal in the 1024 x 768 with 68.7 kHz/85 Hz mode.

- Set brightness and contrast controls to their center positions (OSD control).

9. Focus adjustment

: Apply a video signal in the 1600 x 1200 with 93.8 kHz/75

Hz mode : Select " @ " pattern. : Set the brightness at center (50%) and the contrast to 25

FL. : Adjust focus potentiometers (top of L.O.T.) Focus 1 for

horizontal focus and Focus 2 for vertical focus so that the

picture at 2/3 of the diagonal lines (from center to four

corners) of the displayed screen is as sharp as possible.

10. Loading DDC code

into the DDC IC by EEPROM writer or EDID301.EXE

program and Software DDC Alignment Kit.

The DDC HEX data should be written

8.1 Horizontal geometry (OSD control)

- Adjust the H-width to 355 mm

- Adjust the H-phase to center position.

8.2 Vertical geometry (OSD control)

- Adjust vertical size to 265 mm

- Adjust V-phase to center position.

8.3 Trapezoid distortion (OSD control)

- Adjust the trapezoid to get optimal vertical lines.

8.4 Pincushion (OSD control)

- Adjust the pincushion to get optimal vertical line.

8.5 Parallelogram (OSD control)

- Adjust parallelogram so that vertical lines are vertical or symmetrically about the center vertical axis.

8.6 Unbalance-pin (OSD control)

- Adjust the unbalance-pin so that that vertical border lines

are aligned symmetrically.

8.7 Rotation (OSD control)

- Adjust picture so that vertical tilt is less than +/- 0.5mm.

8.8 Top/Bottom corner(control)

- Adjust the top/bottom corner control to get optimum corner

geometry.

8.9 Store the preset results by selecting the "exit" (OSD

control).

8.10 Repeat the procedure 8.1 to 8.9 until all the preset

timings have been adjusted completely

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Electrical Adjustments (Continued)

7.10 Adjust the R,G,B cut-off for all gun reading to get 100 on low brightness scale.

7.11 Set CA100 high R,G,B scale 100 = 41+/- 1FL,X=313,y=329 Adjust G gain at 100 scale on high brightness scale.

7.12 Adjust R,B gain so that blue and green have the same reading

as red on the high brightness scale

7.13 Set contrast at minimum and repeat 7.10,7.11,7.12,until RGB

three guns get same readings on low and high brightness scale.

7.14 Check full white at contrast and brightness at minimum, the

foreground shall be extinguished.

8. Focus adjustment

Apply a signal of"@"character. at 68.7 kHz/85 Hz mode set the brightness to mid-position , contrast to max - position and adjust the focus for optimal sharpness in the area within 2/3 from the screen center.

9. Loading DDC code

The DDC HEX data should be written into the EEPROM (7803,7804) by EEPROM writer or equivalent method.

a: Service DDC Kit

DDC Module (DDC cable), Part number = 4822 320 12004

DDCV2u.EXE software (3.5" disk), Part number = 4822 711 00024

b: Please refer to Service information 4822 727 21995 for using

the Service DDC Kit.

- First set the 4-pole magnet optimally.

- Then set the 6-pole magnet optimally.

- If the convergence is not now optimal, then adjust to the optimal setting with the 4-pole magnet and then with the 6- Pole magnet again.

- Set the tabs of the 6-pole magnet in the neutral position. This is when the tabs are opposite one another. In this position the magnets do not affect the deflection of the R, B, and G electron beams.

- First set the 4-pole magnet optimally.

- Then set the 6-pole magnet optimally.

- If the convergence is not now optimal, then adjust to the optimal setting with the 4-pole magnet and then with the 6- pole magnet again.

10. Purity adjustment

- Make sure the monitor is not exposed to any external magnetic field.

- Produce a full red pattern on the screen, adjust the purity magnet rings on the PCM assy (on CRT) to obtain a complete field of the color red. This is done by moving the two tabs (2-pole) in such a manner that they advance in an opposite direction but at the same time to obtain the same angle between the two tabs, which should be approximately 180 degree.

- Check by full green pattern and full blue pattern again to observe their respective color purity.

11. Static convergence

Introduction Slight deviation in the static convergence can be corrected by using two permanent pairs of magnets which are fitted around the neck of the CRT. These are the 4-pole magnet and the 6-pole magnet. The 4-pole magnet move the outermost electron beams (R and B) parallel in the opposite direction from the other. The 6-pole magnet moves the outermost electron beam (R, B and G) parallel in the opposite direction from the other. The magnetic field of the above magnets do not affect the center of the CRT neck.

Setting

- Before the static convergence setting can be made,

the monitor must be switched on for 30 minutes.

- The focus setting must be made correctly.

- Signal: 640 * 480, 31.5 kHz/60 Hz mode.

- Set the tabs of the 4-pole magnet in the neutral

position. This is when the tabs are opposite one another. In this position the magnets do not affect the deflection of the R and B electron beams.

- Set the tabs of the 6-pole magnet in the neutral

position. This is when the tabs are opposite one another. In this position the magnets do not affect the deflection of the R, B, and G electron beams.

2-pole purity magnet 6-pole convergence magnet 4-pole convergence magnet Deflection Yoke

4-pole Beam motion producced by the

4-pole convergence magnet

Beam displacement direction

6-pole

Magnetic flux lines

Beam motion producced by the 6- pole convergence magnet

G R

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