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!

©2010, 2011, 2012, 2013, 2014 Frank Sharp - You do not have permission to copy photos and words from this blog, and any content may be never used it for auctions or commercial purposes, however feel free to post anything you see here with a courtesy link back, btw a link to the original post here , is mandatory.
All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Wednesday 20 February 2019

AIWA - TV SX2950 SERVICE MODE

AIWA - TV SX2950 SERVICE MODE




TO ENTER SERVICE MODE

To enter service mode, a modification should be done with its remote control [RC-6VT06]

This is the remote control:
There is a 'Test' key (hidden) just above the 'System' key, a blank space in between two keys, just right of "0" key.  An other one is on the left side of 'system' key.  Might have to peel off the emblem of the remote control to access these keys.  These keys are used for adjusting parameters with Service Mode adjustments only.

STARTING THE SERVICE MODE

  • Press the "Test"(Hidden)  key once to enter to the Aging Mode.
AGING MODE WINDOW
==================================
                               AGING
            AFT                ****
            HEX               ****
            DOWN              **
=================================
  • Press the "Channel" key on the remote control to enter into the adjustment mode.
Hidden Key / "Finish"
  • The accumulated hours in the 'Aging Mode' will be reset by presetting the "Finish" key.
  • Avoid pressing this key during general repairs.
  1. Enter to Aging Mode by pressing the "Test" key on the remote control.
  2. Press the "System' key and confirm the condition of the distinction switch.

-----------------------------------------------------------------------
             1   KE1                          5  SH1
             2   KE2                          6  SH2
             3   INDO1                     7  SH3
             4  IND 02                      8  SH4
                       0123456789ABCDEF
                       0101100011110111
                       1111111111111111
                       0123456789ABCDEF
                       1011001010111100
-----------------------------------------------------------------------
  • In case the data is different, use "Channel" key to scroll  through (0 to 1F), and set to the correct data value of "0" or "1" by the Volume key.
  • All the settings are stored when the "Test" key is pressed to complete the correction.  There will not be a problem even though these changes are done after completing all adjustments.
CONTENTS OF AGING MODE
  1. Release "auto power off" function:  Release auto power off function, when no input is supplied.  Use this mode for warming up, during CRT adjustment.
  2. AFT S-Curve status indication:  The condition of AFT S-curve are indicated by "IN" for suitable tuning, "High" for too high or "Low" for too low.  "Out" is indicated when no signal is applied.
  3. Display of 'CRT ON' accumulated hours:  The CRT used time is accumulated on an hourly basis is displayed in hexadecimal figures. [1*16*16*16 - 4th digit] [ 2*16*16 - 3rd digit] [ 3*16 - 2nd digit] [4*16 - first digit].  
  4. The display will be reset to '0000H' when the accumulated hours exceed '7FFFH'(32768) hours.
ADJUSTMENT MODE OPERATION
  • Return to the aging display by pressing the "Test" key and press "Channel" key to display the adjustment menu screen
  • In case, the contents are different, press '4' key and select [INDO2] for destination. See the display.
Posted By: FRANK at 05:47
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