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Wells-Gardner D9300 Series manual

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  • Page 1

    Wells-Gardner Electronics Corporation Service Manual for D9300 Series Digital-Control Color Monitor Wells-Gardner Electronics 5500W. 55 th Street Suite A Mc,Cook Illinois 60525-3605 (708) 290-2100 069X3045-100 ECN: E01024 Date: 8-18-00 Printed on 03/20/03[...]

  • Page 2

    Wells-Gardner Electronics Corporation INDEX 1. SAFETY PRECAUTION……………………………… 1 2. SPECIFICATION……………………………………… 2 3. TECHNCIAL FEATURES……………………………. 3 4. TIMING CHART………………………………………. 4 5. SET UP……………………………………………?[...]

  • Page 3

    Wells-Gardner Electronics Corporation 1 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 protec[...]

  • Page 4

    Wells-Gardner Electronics Corporation 2 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[...]

  • Page 5

    Wells-Gardner Electronics Corporation 3 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 60/50H[...]

  • Page 6

    Wells-Gardner Electronics Corporation 4 4. TIMING CHART: Factory Pre-Set Timing Modes. Horizontal and Vertical Timing Diagram for Table 1 . TABLE 1 : FH A B HC D E POL. FV A B VC D E POL. VIDEO DESCRIPT ION M ODE 1 MO DE 2 MO DE 3 MOD E 4 640*400 640*400 640*480 8514/A 1024*768 29.63Hz 31.5KHz 31.35KHz 35.552KHz 33.75 µ s 31.778 µ s 28.251 µ s 2[...]

  • Page 7

    Wells-Gardner Electronics Corporation 5 FH 37 .50 0K H z A 26 .66 7u s B 2 . 0 3 2 u s H C 3.810us D 2 0 . 3 1 7 u s E 0 . 5 0 8 u s POL. F V 75 .00 H z A 13 .33 3m s B 0.080ms V C . 4 2 7 m s D 1 2 . 8 0 0 m s E 0 . 0 2 7 m s POL. V IDE O FH A B H C D E POL. F V A B V C D E POL. V IDE O NEGA T IVE AN AL O G 0.124ms 0.600ms 15.880 m s 0.062ms 0.998[...]

  • Page 8

    Wells-Gardner Electronics Corporation 6 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 pow e r source. 5-2. Single Cable Connection. Connect the 15pin signal cable to the[...]

  • Page 9

    Wells-Gardner Electronics Corporation 7 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 th[...]

  • Page 10

    Wells-Gardner Electronics Corporation 8 6-3. OSD Controls - User’s control. A. BRIGHTNESS ADJUSTMENT. 1) Press the “MODE” key then Main-Menu OSD comes out as figure on next page. 2) Search “BRIGHTNESS” sub-menu using “UP/DOWN” key on the Main-Menu OSD. 3) Select the “BRIGHTNESS” by pressing “SEL” key. The “BRIGHTNESS” OSD [...]

  • Page 11

    Wells-Gardner Electronics Corporation 9 A. BRIGHTNESS ADJUSTMENT B. CONTRAST ADJUST SAME ABOVE C. H. POSITION ADJUST SAME ABOVE D. H. SIZE ADJUST SAME ABOVE E. V. POSITION ADJUST SAME ABOVE F. V. SIZE ADJUST SAME ABOVE G. PINCUSHION ADJUST SAME ABOVE H. TRAPEZOID ADJUST SAME ABOVE I. PARRALLELOG ADJUST SAME ABOVE J. PIN BALANCE ADJUST SAME ABOVE[...]

  • Page 12

    Wells-Gardner Electronics Corporation 10 6-3 OSD Controls (continued): K. COLOR ADJUSTMENT 1) Press the “MODE” to show the Main-Menu OSD as shown by the left-below figure. 2) Search the “COLOR” sub-menu using “UP/DOWN” key on the Main-Menu OSD. 3) SELECT the “COLOR” by pressing “SEL” key. The color Sub-Menu OSD appears as shown [...]

  • Page 13

    Wells-Gardner Electronics Corporation 11 L. RECALL. When the “RECALL” key is pressed, all user’s adjustment values are changed to the factory values. M. LANGUAGE. The menu is available in four languages. 1. Press the “MODE” key and the Main-Menu OSD will appear as in the previous figure. 2. Search the “LANGUAGE” sub-menu using the “[...]

  • Page 14

    Wells-Gardner Electronics Corporation 12 7. ADJUSTMENT SPECIFICATION: 7-1. Adjustment Sequence: The monitor requires a min. of 15 minutes warm up time before adjustment. 7-2. Adjustment Sequence: FBT B+ Voltage → G2 Voltage → Hor. Center → Hor. Size → Hor. Position → Ver. Size → Ver. Position → Side-pin → Trapezoid → Focus → Whi[...]

  • Page 15

    Wells-Gardner Electronics Corporation 13 7-3.5 Purity and Convergence Adjustment. (If Required) A. Purity Adjustment. 1. Demagnetize the picture tube and cabinet using a degaussing coil. 2. Turn the CONTRAST and BRIGHTNESS controls to maximum. 3. In User Color Menu, adjust RED and BLUE controls to provide only a green raster . 4. Loosen the clamp s[...]

  • Page 16

    Wells-Gardner Electronics Corporation 14 7-3.6 White Balance adjustment (video). 1. Warm up the unit for 15 minutes 2. Input the window pattern with 31KHz 640*480 mode. 3. Adjust the color temperature to be X=0.285+/-0.015 and Y=0.293+/-0.015 by R.G.B. gain on User Color Menu or User Preference. 7-4 OSD FACTORY CONTROL This should be adjusted by a [...]

  • Page 17

    Wells-Gardner Electronics Corporation 15 B. Exit and save. (Save is automatic) 1. After finishing adjustments, select “RECALL” using “UP/DOWN” key. 2. Press “SEL” key until OSD disappears. The adjusted value is saved and exits from the factory mode. C. Adjustment. All adjustment methods are same as user’s control mode except “COLOR?[...]

  • Page 18

    Wells-Gardner Electronics Corporation 16 7-5 B. Color Adjustment[...]

  • Page 19

    Wells-Gardner Electronics Corporation 17 8.DESCRIPTION OF CIRCUIT OPERATION: 8-1. Mode Control. 8-1.1 H-Sync is inputted to pin 30 of IC601, V-Sync to pin 29 of IC601 for each mode and pin 27, 26 of IC601 output always positive polarity sync. 8-1.2 The outputs from IC601 are as below (See table below) Hf Vf (CS3) (CS2) (CS1) OFF ST-BY SUS -P L ED K[...]

  • Page 20

    Wells-Gardner Electronics Corporation 18 8-2 Deflection Processor (IC301): 8-2.1 Horizontal section. 8-2.1.2 Horizontal Oscillation. Horizontal free frequency is set to 48KHz by R314 and C347. Auto-sync processing can be done from 28KHz to 70KHz by means of IC301 w i thout any adjustment. 8-2.1.3 Phase Shift. Horizontal phase shift is controlled by[...]

  • Page 21

    Wells-Gardner Electronics Corporation 19 8-2.2.4 East-west parabola. A parabola wave-form is available on pin 24 of IC301 for driving the pincushion correction stage. Amplitude of parabola waveform is controlled by IC601 using I²C. 8-2.3 B+ Regulator. B+ PWM regulator output is available on pin 28 of IC301 for driving the B+ control stage. This PW[...]

  • Page 22

    Wells-Gardner Electronics Corporation 20 Q317, Q318 are off when horizo ntal frequency is 53KHz a 61KHz Q316, Q317, Q318 is off when horizontal frequency is 62KHz a 70KHz 8-6 FBT (Flyback Transformer): The high voltage for CRT anode focus, G2 voltage for CRT and – 12V for vertical deflection are generated by the FBT. Also, -130V for G1 voltage, h[...]

  • Page 23

    Wells-Gardner Electronics Corporation 9. TROUBLESHOOTING: 9-1. NO POWER. 21[...]

  • Page 24

    Wells-Gardner Electronics Corporation 22 9-2. NO VIDEO.[...]

  • Page 25

    Wells-Gardner Electronics Corporation 23 9-3. NO RASTER:[...]

  • Page 26

    Wells-Gardner Electronics Corporation 24 Wells-Gardner Electronics Corporation 24 9-4 TROUBLE IN HORIZONTAL SIZ E: 9-4 TROUBLE IN HORIZONTAL SIZ E:[...]

  • Page 27

    Wells-Gardner Electronics Corporation 25 9-5. TROUBLE IN CONTRAST:[...]

  • Page 28

    Wells-Gardner Electronics Corporation 26 9-6. TROUBLE IN BRIGHTNESS:[...]