Wells-Gardner D9100 User Manual

Service Manual for

D9100 Series

Digital-Control Color Monitor

Wells-Gardner Electronics

9500 W. 55

McCook, IL 60525-3605

th

Street, Suite A

(708) 290-2100

Revision: A / E01023

Date: 7-27-00

069X3015-100

Printed on 02/11/04

INDEX

1. SAFETY PRECAUTION……………………………… 1

2. SPECIFICATION……………………………………… 2

3. TECHNCIAL FEATURES……………………………. 3

4. TIMING CHART………………………………………. 4

5. SET UP………………………………………………….. 6

6. CONTROLS AND ADJUSTMENT…………………... 7

7. ADJUSTMENT SPECIFICATION…………………… 10

8. DESCRIPTION OF CIRCUIT OPERATION………...13

9. TROUBLE SHOOTING……………………………….. 18

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1. SAFETY PRECAUTION:

WARNING: Service should not be attempted by anyone unfamiliar with the necessary precautions on this unit. The following precautions are necessary during servicing.

1-1 Some parts, such as a picture tube in this unit, have special safety-related

characteristics for X-RAY RADIATION protection.

For continued safety, the parts replacement should be undertaken referring to below

article (1-2 and 1-5).

1-2 Many electrical mechanical parts in this unit have special safety-related characteristics

for protection against shock hazard and others. These characteristics are often passed

unnoticed by visual inspection and the protection afforded by them cannot necessarily

be obtained by using replacement components rated for higher voltage, wattage, etc.

Replacement parts which have these special characteristics are identified in the manual

and supplements by shading on the schematic diagram and the parts list. Before

replacing any of these components, read the parts list in this manual carefully.

1-3 When replacing the chassis in the cabinet, always be certain that all the protective

devices are installed properly, such as insulating covers, strain relief, etc.

1-4 Before replacing the back cover of the set, thoroughly inspect the inside of the cabinet

to see that no stray parts or tools have been left inside.

1-5 Before returning the set to the customer, always perform an AC leakage current check

on the exposed metallic parts of the cabinet, such as terminal, screwheads, metal

overlays, control shafts, etc. To insure the set is safe to operate without danger of

electrical shock, plug the AC line cord directly into a 120V AC outlet (do not use a line

isolation transformer during this check). Use an AC voltmeter having 5000 ohms per

volt or more sensitivity in the following manner. Connect a 1500 ohm, 10 watt resistor,

parallel with a (0.15uF) capacitor. Reverse the AC plug in the AC outlet and repeat the

AC voltage measurements for each exposed metallic part. Voltage measured must not

exceed 0.3V RMS. This corresponds to 0.2mA AC, any value exceeding this limit

constitutes a potential shock hazard and must be corrected immediately.

1

2. SPECIFICATION:

2-1.1 Picture Tube.

• Size: 14”, 15”, 17”, 19”(18V)

• Dot Pitch: 14” : 0.26 – 0.28mm

15” : 0.26 – 0.28mm 17” : 0.26 – 0.28mm 19” (18V): 0.25mm

2-1.2 Signal Input.

• Video Input: Analog, Positive Signal (0.7V p-p)

• Horizontal Sync: TTL Level, Positive or Negative Pulse

• Scanning : 28 KHz-70KHz

• Vertical Input: TTL Level, Positive or Negative pulse

• Scanning : 40-160Hz

2-1.3 Power Supply.

• Power Input : 120-240 VAC, 50/60Hz

• Fuse Rating: 250V, 3.15A

• Power Consumption

14inch : less than 70W 15inch : less than 80W 17inch : less than 95W 19inch : less than 110W

2-1.4 OSD (On Screen Display) Control:

Refer to page 7

2-1.5 Operating Temperature: 0°C - 55°C

2-1.6 Operating Humidity: 10% - 90% (Noncondensing)

2-1.7 Net Weight

14inch : 22 lbs. (10kg)

15inch : 24 lbs. (11kg)

17inch : 33 lbs. (15kg)

19inch : 37 lbs. (17kg)

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3. TECHNICAL FEATURES:

3.-1 Microprocessor control with OSD (On screen display menu). Microprocessor recognizes the input computer signal and signal output from the customer control board connected to the main board by a flat cable.

3-2 Universal AC Input Voltage.

Power supply operates on 120-240 VAC at 60/50Hz for use all over the world.

3-3. Protection Circuit for over-current.

When an over-current condition occurs in the circuit, the protection circuit operates in

order to prevent the components from electrical shock or other risks.

3-4 Override function.

A (NO SIGNAL MESSAGE) is displayed on the screen if no signal is present at the

signal input cable while the monitor is powered on.

3-5 Control panel.

If you require different display characteristics other than the factory mode presets of

size, position, color settings, use the control panel to program it to your requirements

in each resolution mode. These adjusted settings are kept in memory even if you

change resolution mode or turn off the monitor.

3-6 I²C BUS control.

The monitor is designed with I²C BUS control for simplifying the circuitry.

The number of total components is less than 610 pcs.

3

A

V

ABV

V

A

µ

V

4. TIMING CHART:

Factory Pre-Set Timing Modes.

Horizontal and Vertical Timing Diagram for Table 1.

DESCRIPTION

FH

B

HC

D E

POL.

F

C D E

POL.

IDEO

TABLE 1 :

MODE 1MODE 2MODE 3

GA 720*400

31.469KHz 31.469KHz 35.552KHz 37.500KHz

31.778

3.813

1.907

25.422

0.636

NEGATIVE NEGATIVE POSITIVE NEGATIVE

70.087Hz 59.940Hz 86.960Hz 75.000Hz

14.268ms 16.683ms 11.500ms 13.333ms

0.064ms 0.064ms 0.113ms 0.080ms

1.112ms 0.794ms 0.563ms 0.427ms

12.711ms 15.253ms 10.810ms 12.800ms

0.381ms 0.064ms 0.014ms 0.027ms

POSITIVE NEGATIVE POSITIVE NEGATIVE

ANALOG

s s s

s s

GA 640*480 8514/A 1024*768 S-VGA 680*480

31.778

3.813

1.589

25.422

0.318

NALOG

s

s 3.920

s

28.251

1.247

22.806

0.170

s s s

s s

NALOG ANALOG

MODE 4

26.667

2.032

3.810

20.317

0.508

s s s

s s

4

A

ABV

V

A

V

µ

V

µ

V

A

µ

A

µ

V

µ

A

µ

A

V

µ

A

V

TABLE 1 (CONTINUED) :

DESCRIPTION

FH

B

HC

D E

POL.

FV

C D E

POL.

IDEO

DESCRIPTION

FH

B

HC

D E

POL.

FV

B C D E

POL.

IDEO

MODE 5, S-VG

ESA 800*600

26.400

3.200

2.200µs

20.000

1.000

POSITIVE

60.317Hz

16.579ms

0.106ms

0.607ms

15.840ms

0.026ms

POSITIVE

ANALOG

MODE 9

ESA 800*600

53.674KHz

18.631

1.138

2.702

14.222

0.569

POSITIVE NEGATIVE POSITIVE

85.062Hz 70.069Hz 75.029Hz

11.756ms 14.272ms 13.328ms

0.056ms 0.106ms 0.050ms 0.047ms

0.503ms 0.513ms 0.466ms

11.179ms

0.019ms

POSITIVE

ANALOG

s

s s1.813 s1.920

s 13.653µs 13.003µs s0.321

VGA 800*600

46.875KHz37.879KHz

21.333

1.616µs

3.232µs

16.162

0.323

POSITIVE POSITIVE

75.000Hz

13.333ms

0.064ms

12.800ms 12.480ms

0.021ms 0.722ms

POSITIVE POSITIVE

NALOG

MODE 10

ESA 1024*768

56.476KHz 60.023KHz

17.707

13.599ms

0.054ms

NEGATIVE

NALOG

s

s 16.660µs s1.219 s2.235

s0.203

ESA 800*600

48.077KHz

20.800

2.400

1.280

16.000

1.119

72.188Hz

13.853ms

0.125ms

0.478ms

NALOG

MODE 11

ESA 1024*768

12.795ms

0.017ms

POSITIVE

NALOG

s 20.677µs s2.231 s

s s

s

ESA 1024*768

48.363KHz

NEGATIVE

ESA 1280*1024

MODE 8MODE 6 MODE 7 VG

s

1.615

15.754

0.998

60.004Hz

16.666ms

0.124ms

0.600ms0.448ms

15.880ms

0.062ms

ANALOG

MODE 12

63.981KHz

15.698

1.037

2.296

11.852

0.360

POSITIVE

60.020Hz

16.638ms

0.594ms

16.005ms

0.016ms

POSITIVE

ANALOG

s

s s s

s s

MODE 13

ESA 1024*768

68.677KHz

14.561

1.016

2.201

10.836

0.508

POSITIVE

84.997Hz

11.765ms

0.044ms

0.524ms

11.183ms

0.015ms

POSITIVE

NALOG

s s s

s s

5

5. SET UP:

Setting up your monitor is easy. All you have to do is make a few simple connections and adjustments. The procedure is as follows:

5.1 Start Up.

Your monitor starts up automatically when you insert the power plug to power source.

5-2. Single Cable Connection.

Connect the 15pin signal cable to the source and lock both screws to ensure that the monitor is properly grounded.

D type 15pin connector:

PIN NO. DESCRIPTION PIN NO. DESCRIPTION

1 VIDEO RED 9 N.C. 2 VIDEO GREEN 10 GROUND 3 VIDEO BLUE 11 N.C. 4 N.C. 12 SDA 5 N.C. 13 HOR-SYNC 6 VIDEO RED GROUND 14 VER-SYNC 7 VIDEO GREEN GROUND 15 SCL 8 VIDEO BLUE GROUND

6