Hitachi CM615ET Bedienungsanleitung

CAUTION:

Before servicing this chassis, it is important that the service technician read the “Safety

Precautions”and“ProductSafetyNotices”inthisservicemanual.

ATTENTION:

Avantd’effectuerl’entretienduchâassis,letechniciendoitlireles«Précautionsdesécurité»

etles«Noticesdesécuritéduproduit»présentésdansleprésentmanuel.

VORSICHT:

VorÖffnendesGehäuseshatderService-Ingenieurdie„Sicherheitshinweise“und„Hinweise

zurProduktsicherheit“indiesemWartungshandbuchzulesen.

SERVICE MANUAL

MANUEL D'ENTRETIEN

WARTUNGSHANDBUCH

Data contained within this Service

manual is subject to alteration for

improvement.

Les données fournies dans le présent

manuel d’entretien peuvent faire l’objet

demodificationsenvuedeperfectionner

leproduit.

Die in diesem Wartungshandbuch

enthaltenenSpezifikationenkönnensich

zwecksVerbesserungenändern.

OCTOBER 2000

No. 0502

SPECIFICATIONSAND PARTS ARE SUBJECTTO CHANGE FOR IMPROVEMENT

CM615ET

CM615ET302

CM615ET303

CM615ET321

1. DISPLAY ALIGNMENT

A. Times & Display Size

For all presetting mode listing in section 2.4 shall be within the limitation:

H. WIDTH 306 ± 4 mm

V. HEIGHT 230 ± 4 mm

The external control range of the data area, shall be as follows;

Max. horizontal size : overscan the screen

Min. horizontal size : ≤285mm

Max. vertical size : over the screen

Min. vertical size : ≤202 mm

B. Picture Position

For all presetting mode listing in section 2.4 shall be within the limitation:

H.PHASE SCREEN CENTER ± 3 mm

V.CENTER SCREEN CENTER ± 3 mm

The external control ranges of display for all modes listed in section 2.4

H.POSITION ≥50 mm

V.CENTER ≥25 mm

C. Linearity

The CONTRAST and BRIGHTNESS control shall be properly adjusted at 20 F-L with Full-intensity

reverse pattern, then change to crosshatch Pattern 12x10 (Hx V), the size of grid of crosshatch pattern in

every display mode shall not vary than 10%.If two line is next to each other, 5% if they are not next to

each other. The calculation formula was listed below:

Hmax-HminVmaxV min

x100% or x100%

(Hmax + Hmin) / 2 (Vmax + Vmin) / 2

D. Geometry Distortion (All Preset Mode) :

1) The Contrast and Brightness control shall be properly adjusted at 20 F-L with full intensity reverse

pattern, then change to crosshatch pattern.

2) Pincushion distortion shall be less than H : 1.5% and V : 1.5%.

3) Barrel distortion shall be less than H : 1.5% and V : 1.5%.

4) Trapezoid and parallelogram distortion shall be less than H : 1.5% and V : 1.5%.

5) Distortion of four corners shall be less than 3mm x 3mm.

6) Parallelogram distortion shall be less than 2.0%

7) Tilt distortion shall be less than 1/2 degree when facing east and less than 1 degree when turning

around 360 degree.

8) Tilt distortion shall be less than 2 mm when facing east and less than 1 degree when turning around

360 degree The measurement of tilt is defined to measure the vertical axis with respect to the bezel,

the absolute value of the difference between the extreme left and right measurement of the center

horizontal line.

E. Alignment Procedure

E-1. Brightness Adjust:

Adjust the VR980, have the +15VS By 14.9V±0.1V (The voltage of the C944) in TIMING 1.

Check below items.

The voltage of C949 : 179 ±3V

C947 : 75 ±2V

C946 : 44 ±1.5V

C940 : 8.4 ±0.4V

P990 : 12 ±0.3V

Short-Circuit protection function check.

The power source is 230VAC input.

When short the C944, all output voltage should be shut down and unlatch.

When recover normal condition, all output voltage should recover automatically.

E-2. Light output adjust

Select Timing 1, preset BRI. And CONT. to max. position.

Adjust G2 to get G2 = 550V ±10V

Adjust VR803 to get light output = 0.6FL ~ 0.5FL

Select Timing 2, adjust VR405 to get pattern over scan. (H SIZE 100%)

F. White Balance Adjustment (9300°as major temperature) Low light

adjust

9300°6500°5000°

x = 0.283 ±10 x = 0.313 ±10 x = 0.324 ±10

y = 0.297 ±10 y = 0.329 ±10 y = 0.342 ±10

Y = 0.6 ~ 0.8FL Y = 0.6 ~ 0.8FL Y = 0.6 ~ 0.8FL

Select Timing 6, adjust BRI. And CONT. to max. disconnect R. G. B. signals, adjust R/B BAIS to 100 scale

(OSD then solowly adjust G BAIS to 100 scale adjust VR803 to get light output = 0.6 ~ 0.8FL for 9300,

repeat above steps for 6500 and 5000 R/B GAIN setting to get raster color temperature within specified,

finally, adjust BRI to get raster = 0.06FL.

High light adjust

9300°6500°5000°

x = 0.283 ±10 x = 0.313 ±10 x = 0.324 ±10

y = 0.297 ±10 y = 0.329 ±10 y = 0.342 ±10

Y = FL Y = FL Y = FL

Select Timing 4, measure 2 "square, set CONT. to Max, position and SUB-CONT to 127, R/B GAIN to

200, G

GAIN to 200, adjust SUB-CONT to get light output = 50 FL for 9300, repeat above steps for 6500

and

5000 R/B GAIN setting to get color temperature within specified.

3. Select Timing 3 with full white pattern adjust OSD-ABL (SUB BRIGHTNESS) to get full white light

output = 30 ±1 FL.

G. Focus Adjustment

G-1. Adjust brightness, have the brightness of raster be 0.06FL and contraset be 35FL in timming 6.

G-2. Adjust the G4a and G4b of theFBT, have focus be in the best condition on the 1/4 diagonal of

screen in timing 5.

H. Convergence Adjustment

Input R+B and R+G signals, make sure convergence within specified (if not 4 pole and 6 pole). A zone =

0.3MM., B zone 0.4MM. (X) < 0.4MM, (Y) < 0.4MM.

NOTE : 1 Aarea = 230mm (circle)

2 B area = 306 x 230 mm

I. Presetting Modes Adjustment

There are totally 12 preset modes, individual adjust is needed.

H-SIZE adjust : adjust control key to get H-SIZE = 306 ±2mm.

H-CENTER adjust : adjust control key to get center within ±2mm

V-SIZE adjust : adjust control key to get V-SIZE = 230 ±2mm

V-CENTER adjust : adjust control key to get center within ±2mm

Geometric adjust : adjust control key to get minimize distortion.

H-linearity check : check and make sure linearity meet spec..

(CROSS HATCH PATTERN 10X8)

2(MAX -MIN)

X100%

MAX + MIN

Any : <10%

Adjacent : <5%

V-linearity check : check and make sure linearity meet spec.

2(MAX -MIN)

X100%

MAX + MIN

Any : <10%

Adjacent : <6%

Geometric check : check and make sure geometric meet spec.

Get into OSD select EE-USER item, press ENTER till OSD disappear then turn off power, disconnect JP1,

turn on power again, make sure all of the alignment parameters has been stored properly, make H-SIZE

adjust range can OVER SCAN and -5%, PHASE adjust range >15mm, V-SIZE adjust range can OVER

SCAN and -6%, V-CENTER adjust range >20mm and make sure TILT adjust work properly.

J. Power Adjustment

J-1. Adjustthe VR980, have the +15Vs be 15.3v

0.1v (the voltage of the C944) in timing 1.

J-2. Checkbelow items the voltage of C949 : 179

J-3. Short-circuit protection function check

when short the C944, all output voltage should be shut down and unlatch

J-4. Side Pincushion, Tilt and GeometryDistortion Adjustment

1. Input timing 1, adjust the display be normal position and size.

2. Adjustfront control key to get the bestpincushion distortion and tilt.

3. SelectP502 and adjust VR402~VR404 to get the best geometrydistortion.

J-5.Focus Adjustment

1. Input timing 1, EXT.BRIGHTNESS move to center position. UseEXT.CONTRAST set the

brightnessto 25FL.

2. Adjust Focus VR (mounting on F.B.T), to get best focus.

C947 : 75

±±±±

C946 : 44

±±±±

1.5v

C940 : 8.4

±±±±

0.4v

the power source is 230vac input

when recover normal condition, all output voltage should recover automatically.

J-6. Preset Timing Adjustment

1. Input each PRESET MODE timing, and use front control key adjust the display to the normal position

and size, and wait for 5 seconds.

2. Switch to next timing repeat 1 process. Until every PRESET MODE timing have been adjusted.

J-7. Timing And Pattern

Timing mode pattern.mdnm/

1 VESA 68.6k CROSS HATCH

2 VESA 68.6K 2" SQUARE

3 VESA 68.6K FULL WHITE

J-8. Power Saving Function Check

The power source is 230Vac input

When remove the sync signal, the monitor should enter suspend mode and then off mode.

When power saving, the power consumption of monitor should be less than: suspend mode 8w off mode

The monitor recovering time from suspend mode or off mode to on mode should be less than 5 seconds.

TABLE 1

TIMING MODE PATTERN

1. 64K 51 CROSSHATCH

2. 37.8K/60HZ 51 CROSSHATCH

3. 60K Full-white

4. 60K 5×2″squares

5. 68K “me”

6. 68K 5×2″squares

PRESETTING MODES TABLE2

D:display B:backporc

h P:pulse F:front

1 VGA 640

350 25.175

P/N 31.469

70.087 31.778

14.268 25.422

11.122 907

1.875 3.813

0.064 636

1.207

2 IBM

VGA 640

480 25.175

N/N 31.469

59.940 31.778

16.683 25.422

15.253 907

1.0169 813

0.064 636

0.318

3 VESA

640

480 31.5

N/N 37.5

75 26.667

13.333 20.317

12.8 3.81

0.427 2.032

0.08 0.508

0.027

4 VESA

640

480 36

N/N 43.269

85.008 13.111

11.764 17.778

11.903 2.222

0.578 1.556

0.069 1.556

0.023

5 IBM

VGA 720

400 28.321

N/P 31.468

70.085 31.468

70.085 31.778

14.268 25.422

12.711 1.907

1.0804 0.636

0.413

6 VESA

800

600 40

P/P 37.879

60.317 36.4

16.579 20

15.84 2.2

0.607 3.2

0.106 1

0.026

7 VESA

800

600 49.5

P/P 46.875

75 21.333

13.333 16.162

12.8 3.232

0.448 1.616

0.064 0.323

0.021

8 VESA

800

600 56.25

P/P 53.674

85.061 18.631

11.756 14.222

11.179 2.702

0.503 1.138

0.056 0.569

0.019

9 VESA

IBM

XGA

1024

764 65

N/N 48.363

60.004 20.677

16.666 15.754

15.88 2.462

0.6 2.092

0.124 0.369

0.063

10 VESA 1024

768 78.75

P/P 60.023

75.029 16.66

13.328 13.003

12.795 2.235

0.466 1.219

0.05 0.203

0.017

11 VESA 1024

768 94.5

P/P 68.677

84.997 14.561

11.765 10.836

11.183 2.201

0.524 1.016

0.044 0.508

0.015

12 VESA 1152

864 108

P/P 67.5

75 14.815

13.333 10.667

12.8 2.37

0.474 1.185

0.044 0.593

0.15

13 VESA 1280

1024 108

P/P 63.981

60.02 15.63

16.661 11.852

16.005 2.296

0.594 1.037

0.047 0.444

0.016

Fig. 2

Fig. 3

2. CONTROL AND CONNECT LAYOUT

Main PCB

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