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

Wednesday 13 March 2019

PANASONIC CT-20SX11E - CT-20SX11CE – COLOR TV - HOW TO ENTER SERVICE MODE

PANASONIC CT-20SX11E - CT-20SX11CE – Color TV - HOW TO ENTER SERVICE MODE



CT-20SX11E - CT-20SX11CE – Color TV - SERVICE MODE _ Panasonic
Entering Service Mode (Back-Open Method)
1. While the Receiver is ON and operating in Normal Mode, momentarily short test point FA1 (TP8) to Cold Ground ( ) FA2 (TP3) A-Board.  (The Receiver enters the Aging Mode.)
Yellow letters “CHK” appear in the upper left corner of the CRT.  (The Volume Up/Down will adjust rapidly).
2. Simultaneously press the Action and the Volume Up buttons on the Receiver Control Panel.
The Receiver enters the Service Mode.
The letter in “CHK” turns red. (The Volume Up/Down will adjust normally). (All customer controls are set to nominal level)
Using its remote control
Select SET-UP icon and select CABLE mode.
Select TIMER icon and set SLEEP time for 30 Min.
Press ACTION button twice to exit menus.
Tune to the Channel 124.
Adjust VOLUME to minimum (0).
Press the VOL button (decrease) on Receiver. Red “CHK” appears in upper corner.
To toggle between Aging and Service modes:
While the “CHK” is displayed on the left top corner of the CRT, pressing the Action and the Volume Up buttons on the Receiver simultaneously will toggle between the modes. Red “CHK” for Service and yellow “CHK” for Aging.
Press the Power Button on the Remote Control to select one of six Service Adjustment Modes.
B= Service VCJ SUB-DATA ADJUSTEMENT.
C= Service VCJ CUT-OFF ADJUSTMENT.
S= Service OPTIONS (PIP and CLOCK) ADJUSTMENT.
M= Service MTS ADJUSTMENTS.
X = Service COMB FILTER ADJUSTMENT.
“CHK” = Normal operation of CHANNEL Up / Dn and VOLUME  L / R.
How to Exit the Service Mode
Press the Action and the Power buttons on the Receiver simultaneously for at least 2 seconds.
THE RECEIVER EXITS SERVICE MODE.
The Receiver momentarily shuts off; then comes back on tuned to channel 3 with a preset level of sound.  Any programmed channels, channels caption data and some others user defined settings will be erased.
Service Mode Menu Adjustments.
An address Menu appears in the right hand corner of the screen
NB: Always Exit the Service Mode Following Adjustments.
Press the Power Button on the Remote Control to select the Service Adjustment
For Adjustments
Press Channel Up/Down on the Remote Control to select one of the available Service Adjustments. [Write Down the original value set for each address before modifying anything. It is easy to erroneously adjust the wrong item]
Press Volume Up/Down on the Remote Control to adjust the level of the selected Service Adjustment.
To Check colour Purity
Press the Recall Button on the Remote Control when in Service Mode (red “CHK” is displayed) to enter the Purity Field Check Mode.
Posted By: FRANK at 04:59
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