REPAIRING AND NOT THROWING AWAY

REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

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Friday 22 March 2019

DISNEY DT1300C - DT1300P - DT1300A - SERVICE MODE & ADJUSTMENTS

DISNEY DT1300C - DT1300P - DT1300A - SERVICE MODE & ADJUSTMENTS





TO ENTER SERVICE MODE
Prepare normal remote control unit. (Part No. N0121UD or N0134UD) Remove 3 Screws from the back lid.

Add J1 (Jumper Wire) to the remote control CBA.
Service mode:
  • Use the service remote control unit.
  • Turn the power on. (Use main power on the TV unit.)
  • Press "SLEEP" button on the service remote control unit. Version of microcomputer will display on the CRT. (Ex: 200-0.07 or 054-0.13)

When CPU version is 054-0.13: Check the display on the lower left is "00" and if it is not "00", set it at "00" according to "3-1 FRENCH, ACCESS CODE, VIDEO TONE".
When CPU version is 200-0.07: Confirm that the character of U ( U.S.A. model ) is indicated on the bottom left of the CRT. If the character of C ( CANADA model ) is indicated, perform "3-1 Setting for FRENCH data Values".
  • DC 105V Adjustment.
Purpose: To obtain correct operation.

Symptom of Maladjustments: The picture is dark and the unit does not operate correctly.
Note: TP601, TP300(GND), VR661 --- Main CBA
  • Connect DC Volt Meter to TP601 and TP300(GND).
  • Adjust VR661 so that the voltage of TP601 becomes +105±0.5V DC.
BLACK STRETCH ADJUSTMENT

Purpose: To show the fine black color.
Symptom of Misadjustment: Black color will not appear correctly.
Note: Use Service remote control unit.
  • Enter the Service mode.
  • Press "6" button on the Service remote control unit. "B-S" is indicated.
  • Press "CH UP/DN" buttons on the Service remote control unit so that display will change " OFF ", "0", " 1 ", " 2 " and " 3 ". Then choose " B-S OFF ".
  • Press "6" button on the Service remote control unit. " B-S*2 " is indicated.
  • Press "CH UP/DN" buttons on the Service remote control unit so that display will change "0", " 1 ". " 2 " and " 3 ". Then choose " B-S*2 0 ".
  • Turn the power off and on again. (Main power button on the TV unit.)

Setting for 7F and FRENCH data Values
General
  1. Enter the Service mode.
  2. Press "VOL DN" button on the Service remote control unit. Display changes " C/D ", " VCO ", " 7F ", " FRENCH ", " ACCESS CODE ", " STEREO ", " VIDEO TONE ", " FM-MODE " and " AV-OUT " cyclically when "VOL DN" button is pressed.
7F

  • Press " VOL DN " button on the Service remote control unit. Then select 7F display.
  • Press "CH UP/DN" buttons on the Service remote control unit. Then choose 7F=FF.
FRENCH

  • Press "VOL DN" button on the Service remote control unit. Then select FRENCH display.
  • Press "CH UP/DN" buttons on the Service remote control unit. Then choose FRENCH=OFF.
When CPU version is 053-0.11, perform the following settings:

ACCESS CODE à set to OFF
VIDEO TONE     à set to OFF
FM-MODE         à  set to ON
AV-OUT             à set to OFF
STEREO            à set to OFF
Note: C/D and VCO data values do not need to be adjusted at this moment.

Setting for CONTRAST, COLOR, TINT, V-TINT and SHARP data Values
General
  1. Enter the Service mode.
  2. Press " MENU " button on the Service remote control unit. Display changes " BRIGHT ", " CONTRAST ", "COLOR ", " TINT ", " V-TINT " and " SHARP " cyclically when " MENU " button is pressed.
  • CONTRAST (CNT)
Press " MENU " button on the Service remote control unit. Then select " CONTRAST " (CNT) display.

Press "CH UP/DN" buttons on the Service remote control unit so that the value of " CONTRAST " (CNT) becomes 78.
  • COLOR (CLR)
Press " MENU " button on the Service remote control unit. Then select " COLOR " (CLR) display.

Press "CH UP/DN" buttons on the Service remote control unit so that the value of " COLOR " (CLR) becomes 58.
  • TINT (TNT)
Press " MENU " button on the Service remote control unit. Then select " TINT " (TNT) display.

Press "CH UP/DN" buttons on the Service remote control unit so that the value of " TINT " (TNT) becomes 60.
  • V-TINT (V-TNT)
Press " MENU " button on the Service remote control unit. Then select " V-TINT " (V-TNT) display.

Press "CH UP/DN" buttons on the Service remote control unit so that the value of " V-TINT " (V-TNT) becomes 62.
  • SHARP (SHARP)
Press " MENU " button on the Service remote control unit. Then select " SHARP " (SHARP) display.

Press "CH UP/DN" buttons on the Service remote control unit and select " SHARP OFF ".
Note: BRIGHT data value does not need to be adjusted at this moment.
  • AGC Adjustment
Purpose: Set AGC (Auto Gain Control) Level.

Symptom of Misadjustment: AGC does not synchronize correctly when RF input level is too weak and picture distortion may occur if it is too strong.
  •  Enter the Service mode.
  • Then press number " 2 " button on the Service remote control unit.
  • Receive the Color Bar signal for channel 4 (67.25MHz). (RF Input Level: 60dBμV)
  • Press "CH UP/DN" buttons so that the voltage of TP301 becomes +2.7±0.1V DC.
  • Turn the Power off and on again. (Main power button on the TV unit.)
FM AGC Adjustment
  • Enter the Service mode.
  • Then press number "2" button twice on the remote control unit.
  • Press CH UP/DN buttons so that the FM AGC (MAX) level is 127.
Black Level Adjustment
Purpose: Set Sub-bright Level
Symptom of Misadjustment: If Sub-brightness is incorrect, Proper brightness can not be obtained by adjusting the Brightness Control.
Note: TP300 (GND), D316 (Cathode) à MAIN CBA
  • Enter the Service mode.
  • Press " MENU " button on the Service remote control unit and select " BRT " mode. (Display changes " BRT ", " CNT ", " CLR " and " TNT " cyclically when MENU button is pressed).
  • Press "CH UP/DN" buttons on the Service remote control unit so that the value of " BRT " becomes 128.
  • Turn the power off and on again. (Main power button on the TV unit.)
V. Position Adjustment
Purpose: To obtain correct vertical width of screen image.
Symptom of misadjustment: If V. Position is incorrect, vertical height of image on the screen may not be properly displayed.
Use Service remote control unit
  • Operate the unit for at least 20 minutes.
  • Enter the Service Mode.
  • Receive the Monoscope Pattern.
  • Press " 9 " button on the Service remote control unit and select " V-P " mode. (Display change " V-S " and " V-P " cyclically when " 9 " button is pressed).
  • Press "CH UP/DN" buttons on the Service remote control unit so that the top and bottom of the monoscope pattern will be equal of each other.
  • Turn the Power off and on again. (Main power button on the TV unit.)

V. Size Adjustment
Operate the unit for at least 20 minutes.
  • Enter the Service mode.
  • Receive the Monoscope Pattern.
  • Press " 9 " button on the Service remote control unit and select " V-S " mode. (Display changes " V-S " and " V-P " cyclically when " 9 " button is pressed).
  • Press "CH UP/DN" buttons on the Service remote control unit so that the monoscope pattern will be 90±5% of display size and the circle is round.
  • Turn the power off and on again. (Main power button on the TV unit.)

H. Position Adjustment
Operate the unit for at least 20 minutes.
  • Enter the Service mode.
  • Receive the Monoscope Pattern.
  • Press " 8 " button on the remote control unit and select " H-P " mode.
  • Press "CH UP/DN" buttons on the Service remote control unit so that the monoscope pattern will be 90±5% of display size and the circle is round.
  • Turn the Power off and on again. (Main power button on the TV unit.)

Cut-off Adjustment
Purpose: To adjust the beam current of R, G, B, and screen voltage.
Symptom of Misadjustment: White color may be reddish, greenish or bluish.
Note: Screen Control FBT à Main CBA
F.B.T= Fly Back Transformer
Use Service remote control unit
  1. Degauss the CRT and allow CRT to operate for 20 minutes before starting the alignment.
  2. Input the Black Raster Signal from RF Input.
  3. Enter the Service mode.
  4. Press "VOL DN" button on the Service remote control unit and select " C/D " mode. (Display changes " C/D ", " VCO ", " 7F " and " FRENCH " cyclically when "VOL DN" button is pressed.) then press " 1 ".  The display will momentarily show " CUT OFF R " (R= Red). Now there should be a horizontal line across the center of the picture tube. If needed gradually turn the screen control on the flyback, clockwise until the horizontal line appears. Adjust the Red Cut off by pressing the "CH UP/DN" buttons.  Proceed to Step 5 when the Red Cut off adjustment is done.
  5. Press the " 2 " button. The display will momentarily show " CUT OFF G " (G=Green). Adjust the Green Cut off by pressing the "CH UP/DN" buttons. Proceed to step 6 when the Green Cut off adjustment is done.
  6. Press the " 3 " button. The display will momentarily show " CUT OFF B " (B=Blue). Adjust the Blue cut off by pressing the "CH UP/DN" buttons. When done with steps 4, 5 and 6 the horizontal line should be pure white if not, then attempt the Cut off adjustment again.
Posted By: FRANK at 02:57
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