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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All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Wednesday 27 March 2019

MEDION - DISNEY _ MD20080 _ SERVICE MODE & ADJUSTMENTS

MEDION - DISNEY _ MD20080 _ SERVICE MODE & ADJUSTMENTS



SERVICE MODE

  • To enter the Service Mode, press both set key and remote control key for more than 1 second.
Set Key
Remocon Key
Operations

VOL. (-) MIN
0
Releasing of V-CHIP PASSWORD and LOCK PASSWORD.
VOL. (-) MIN
1
Initialization of factory data.
NOTE: Do not use this for normal servicing.
If you set factory initialization, the memories are reset such as the clock setting, the channel setting, the POWER ON total hours, and PLAY/REC total hours.
VOL. (-) MIN
6
POWER ON total hours is displayed on the screen.
Refer to the "CONFIRMATION OF HOURS USED".
Can be checked of the INITIAL DATA of MEMORY IC.
Refer to the "WHEN REPLACING EEPROM (MEMORY) IC".
VOL. (-) MIN
9
Display of the Adjustment MENU on the screen. (On-Screen Display Adjustment).

CONFIRMATION OF HOURS USED

POWER ON total hours can be checked on the screen. 
Total hours are displayed in 16 system of notation.
NOTE: If you set factory initialization, the total hours is reset to "0".
  • Set the VOLUME to minimum.
  • Press both VOL. DOWN button on the set and Channel button (6) on the remote control for more than 1 second.
  • After the confirmation of using hours, turn off the power.
If a service repair is undertaken where it has been required to change the MEMORY IC.
  1. Enter DATA SET mode by setting VOLUME to minimum.
  2. While holding down VOLUME button on front cabinet, press key 6 on remote control for more than 1 second.
  3. ADDRESS and DATA should appear.
  4. ADDRESS is now selected and should "blink". Using the VOL. +/- button on the remote, step through the ADDRESS until required ADDRESS to be changed is reached.
  5. Press ENTER to select DATA. When DATA is selected, it will "blink".
  6. Again, step through the DATA using VOL. +/- button until required DATA value has been selected.
  7. Pressing ENTER will take you back to ADDRESS for further selection if necessary.
  8. Repeat steps 3 to 6 until all data has been checked.
  9. When satisfied correct DATA has been entered, turn POWER off (return to STANDBY MODE) to finish DATA input.
TABLE - MEMORY DATA
INI
+0
+1
+2
+3
+4
+5
+6
+7
+8
+9
+A
+B
+C
+D
+E
+F
00
04
74
60
90
82
02
00
00
3F
00
00
00
00
00
C2
AA
10
02
8A
C0
40
06
00
70
C4
00
00
00
80
00
4A
00
00
20
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00

INITIALIZING OF SHIPPING
  • Turn POWER on.
  • While holding down VOLUME button on front cabinet, press key 1 on remote control for more than 1 second.
  • After the finishing of the initializing of shipping, the unit will turn off automatically.
ON SCREEN DISPLAY ADJUSTMENT ITEMS
  • In the condition of NO indication on the screen. Press the VOL. DOWN button on the set and the Channel button (9) on the remote control for more than 2 seconds to appear the adjustment mode.
  • Use the Channel UP/DOWN button or Channel button (0-9) on the remote control to select the options.
  • Press the MENU button on the remote control to end the adjustments
FUNCTIONS

CUT OFF
RF AGC
AGC GAIN
R DRIVE
R CUT OFF
G DRIVE
G CUT OFF
B DRIVE
H POSI
V POSI
V SIZE
VCO COASE
VCO FINE
VCO COASE L1
VCO FINE L1
BRIGHT CENT

BRIGHT MAX
BRIGHT MIN
CONT CENT
CONT MAX
CONT MIN
COLOR CENT
COLOR MAX
COLOR MIN
SHARP
M R CUT OFF
M G CUT OFF
M B CUT OFF
CVBS OUT
APR THR
BELL
BANDPASS
H POSI OSD