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 !

Monday, 18 March 2019

TOSHIBA 29CJZ8UR SERVICE MODE - TV - SELF DIAGNOSTIC FUNCTION

TOSHIBA 29CJZ8UR

SERVICE MODE -  TV - SELF DIAGNOSTIC FUNCTION

SERVICE MODE;
  • Press [MUTE] button once on Remote Control.
  • Press [MUTE] button again to keep pressing.
  • While pressing the [MUTE] button, press MENU button on TV set.
  • Press MENU button on TV.
SERVICE MODE KEYS
  • Screen adjustment mode ON/OFF: -/-- button (on Remote)
  • Test signal selection : [POWER]button (on Remote)
  • Selection of the adjustment items : Channel ▲/▼ (on TV or Remote)
  • Change of the data value : Volume +/– (on TV or Remote)
  • Adjustment menu mode ON/OFF : MENU button (on TV)
  • Initialization of the memory (QA02) : CALL + Channel button on TV (▲)
  • Reset the count of operating protect circuit to “00”: CALL + Channel button on TV (▼)
“RCUT” selection : 1 button
“GCUT” selection : 2 button
“BCUT” selection : 3 button
“SCNT” selection : 4 button
“COLP” selection : 5 button --- Color thickness correction.  [Note: Displayed differently as shown below, depending on the setting of the receiving color system]
“TNTC” selection : 6 button
Convergence adj : YELLOW button
Self diagnostic display ON/OFF : 9 button.
TO SELECT AN ITEM TO ADJUST
Every pressing of CHANNEL ▲button in the service mode changes the adjustment items. ▼ (Button for reverse order).
TO ADJUST DATA VALUE
Pressing of VOLUME +/– button will change the value of data in the range from 00H to FFH. The variable range depends on the adjusting item.
TO EXIT SERVICE MODE
Pressing POWER button to turn off the TV once.
INITIALIZATION OF MEMORY DATA OF QA02
After replacing QA02, the following initialization is required.
  • Enter the service mode, then select any register item.
  • Press and hold the CALL button on the Remote, then press the CHANNEL▲ button on the TV. The initialization of QA02 has been complated.
  • Check the picture carefully. If necessary, adjust any adjustment item above.
  • Perform “Auto tune” on the owner’s manual.
CAUTION: Never attempt to initialize the data unless QA02 has been replaced.
SELF DIAGNOSTIC FUNCTION
  • Press “9” button on Remote Control during display of adjustment menu in the service mode.  The diagnosis will begin to check if interface among IC’s are executed properly.
During diagnosis, the following displays are shown.
  1. Firmware: Version information of microprocessor. In case of file name : JH9 and Version : 1.00 indicates[JH9_100].
  2. Time: Total hour of turn the TV on. (Unit : H)
  3. Power : Operation number of protecting circuit ----"00" is normal.  When indication is other than "00", over current apt to flow, and circuit parts may possibly be damaged.
  4. BusCont à "OK" is normal. When type name of semiconductor indicates.
  5. BLOCK. UV : TV reception mode.
     6.  Model name (7 digit)
Posted By: FRANK at 02:39
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