Wells-Gardner D9300 User Manual

Wells-Gardner Electronics Corporation

Service Manual for

D9300 Series

Digital-Control Color Monitor

Wells-Gardner Electronics

th

5500W. 55

Street Suite A

Mc,Cook Illinois 60525-3605

[phone]

Date: 8-18-00

069X3045-100

ECN: E01024

Printed on 03/20/03

Wells-Gardner Electronics Corporation

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……………………12

8. DESCRIPTION OF CIRCUIT OPERATION………...17

9. TROUBLE SHOOTING………………………………..21

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Wells-Gardner Electronics Corporation

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.

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2. SPECIFICATION:

2-1 Picture Tube.

x Size: 18V
x Dot Pitch: .25mm

2-2 Signal Input.

x Video Input: Analog, Positive Signal (0.7V p-p)
x Horizontal Sync: TTL Level, Positive or Negative Pulse
x Scanning : 28 KHz-70KHz
x Vertical Input: TTL Level, Positive or Negative pulse
x Scanning : 40-160Hz

2-3 Power Supply.

x Power Input : 120-240 VAC, 50/60Hz
x Fuse Rating: 250V, 3.15A
x Power Consumption

Normal : less than 130W

2-4 OSD (On Screen Display) Control:

Refer to page 7

2-5 Operating Temperature: 0qC - 55qC

2-6 Operating Humidity: 10% - 90% (Noncondensing)

2-7 Net Weight : 17kg (37lbs)

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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.

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Wells-Gardner Electronics Corporation

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X

4. TIMING CHART:

Factory Pre-Set Timing Modes.
Horizontal and Vertical Timing Diagram for Table 1

.

QUANTUM 801G

FORMAT

DESCRIPTION

HC

POL.

VC

POL.

VIDEO

FH

A
B

D
E

FV

A
B

D
E

TABLE 1 :

MVP-NSW US500 MK6

MODE 1 MODE 2 MODE 3 MODE 4

640*400 640*400 640*480 8514/A 1024*768

29.63Hz 31.5KHz 31.35KHz 35.552KHz

33.75

26.67

POSITIVE POSITIVE POSITIVE POSITIVE

62.91Hz 70.1Hz 59.8Hz 86.960Hz

15.88ms 14.2ms 16.72ms 11.500ms

0.0338ms 0.0636ms 0.066ms 0.113ms

1.680ms 1.110ms 1.052ms 0.563ms

13.56ms 12.7ms 15.36ms 10.810ms

0.675ms 0.408ms 0.316ms 0.014ms

POSITIVE

ANALOG

1.76

3.52

1.86

s
s
s

s
s

31.778

1.84

25.4

0.63

POSITIVE POSITIVE

ANALOG

s

s3.86

3.88

s
s
s

28.251

2.04

25.5

0.58

ANALOG ANALOG

s
s
s
s
s

VGA_M4

28.251

3.920

1.247

22.806

0.170

POSITIVE

s
s
s

s
s

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Wells-Gardner Electronics Corporation

A

V

A

V

V

A

C

V

A

V

V

µ

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V

µ

V

V

V

V

V

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A

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A

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V

µ

µ

V

µ

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A

A

V

µ

µ

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µ

QUANTUM 801GX

FORMAT

DESCRIPTION

FH 37.500KHz

B 2.032us

H C 3.810us

D 20.317us
E 0.508us

POL.

F

B 0.080ms
C .427ms
D 12.800ms
E 0.027ms

POL.

IDEO

QUANTUM 801GX

FORMAT

DESCRIPTION

FH

B

H

D
E

POL.

F

B
C
D
E

POL.

IDEO

MODE 5, S-VG

26.667us

75.00Hz

13.333ms

VG900602 DMT8075

ESA 680*480

NEGETIVE

NEGETIVE

ANALOG

DMT8085

MODE 10

ESA 800*600

53.674KHz

18.631

1.138

2.702

14.222

0.569

POSITIVE NEGATIVE POSITIVE

85.062Hz 70.069Hz

11.756ms 14.272ms 13.328ms

0.056ms 0.106ms 0.050ms

0.503ms

11.179ms

0.019ms

POSITIVE

ANALOG

s
s1.813
s1.920

s13.653
s0.321

VGA 800*600

37.879KHz

26.400

3.200

2.200

20.000

1.000

POSITIVE

60.317Hz

16.579ms

0.106ms

0.607ms

15.840ms

0.026ms

POSITIVE

ANALOG ANALOG

VS910801 DMT1075 DMT1260 DMT1085

MODE 11

ESA 1024*768

56.476KHz

17.707

0.513ms 0.466ms

13.599ms

0.054ms

NEGATIVE

ANALOG

s
s
s

s
s

s 16.660µs
s1.219
s2.235

s 13.003µs
s0.203

VS900603

ESA 800*600

46.875KHz 48.077KHz

21.333

1.616

3.232

16.162

0.323

POSITIVE

75.000Hz

13.333ms

0.064ms

0.448ms

12.800ms

0.021ms

POSITIVE

MODE 12

ESA 1024*768

60.023KHz

75.029Hz

12.795ms

0.017ms

POSITIVE

ANALOG

VG901101

MODE 8MODE 6 MODE 7 VG

ESA 800*600

s
s
s

s
s

s
s

s

20.800

2.400

1.280

16.000

1.119

POSIIVE

72.188Hz

13.853ms

0.125ms

0.478ms

12.480ms

0.722ms

POSITIVE

MODE 13

ESA 1280*1024

63.981KHz

15.698

1.037

2.296

11.852

0.360

POSITIVE

60.020Hz

16.638ms

0.047ms

0.594ms

16.005ms

0.016ms

POSITIVE

s
s
s

s
s

NALOG

s
s
s

s
s

NALOG

VG901101

MODE 9

ESA 1024*768

48.363KHz

20.677

2.231

1.615

15.754

0.998

NEGATIVE

60.004Hz

16.666ms

0.124ms

0.600ms

15.880ms

0.062ms

NEGATIVE

ANALOG

MODE 14

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

ANALOG

s
s
s

s
s

s
s
s

s
s

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Wells-Gardner Electronics Corporation

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

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6. CONTROLS AND ADJUSTMENTS:

There are four switches on the control panel. Adjustable controls allow the best display
status for individual requirements.

6-1. Key Function.

1. MODE/EXIT
MODE – Call the Main-Menu OSD

2. SEL / Degauss
SEL – Call the Sub-Menu OSD

Degauss – Degausses the CRT (active when the OSD is not displayed)

3. DOWN/UP
When the Main-Menu is displayed, you can select each function using these keys.

When the Sub-Menu is displayed, you can change the amplitude of
the selected function of the screen using these keys.

6-2. O.S.D. CONTROL METHOD.

User Adjustment.

Location Adjustment Method Function

Brightness
Contrast

Horizontal Position
CUSTOMER
CONTROL
PCB OSD CONTROL

VR control, VR501

MAIN PCB

*NOTE: (FACTORY ADJUSTED AND EPOXYED VR301)

(HOT MELTED SCREEN FBT)

VR301
FBT
VR302

7

Horizontal Size

Vertical Position

Vertical Size

Side Pincushion

Trapezoid

Pin Balance

Parallelogram

Sub-Bright

H.V. Adjustment*

Focus and Screen

Tilt