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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Thursday 21 March 2019

YAMAHA RX-367 HTR-3063 - SELF DIAGNOSIS DISPLAY - FUNCTIONS

YAMAHA RX-367 HTR-3063 - SELF DIAGNOSIS DISPLAY - FUNCTIONS




 
 “For more details, see the previous post”  [Click on images to Enlarge]

 DISPLAY PROVIDED WHEN SELF-DIAGNOSIS FUNCTION STARTED

  • The display is as described below depending on the situation when the last time the power to this unit is turned off.
  • When the power is turned off normally:
  • The FL display of this unit displays “NO PROTECT” then the main menu (sub-menu “1. ANALOG BYPAS” of main menu 1 BYPASS) a few seconds later.
WHEN THE PROTECTION FUNCTION WORKED TO TURN OFF POWER


The FL display of this unit displays the data of protection function which worked at that time then the main menu (sub-menu “1. ANALOG BYPASS” of main menu 1 BYPASS) a few seconds later.
Note: When you reactivate the self-diagnostic function after turning off the power once by pressing the (Power) key, “NO PROTECT” will be displayed because that situation is equal to “1. When the power is turned off by usual operation:” described above.
However the protection function history is stored in a back-up IC with a backup. For details, refer to main menu 21 PROTECTION HISTORY.

WHEN PROTECTION FUNCTION WORKED DUE TO EXCESS CURRENT
Cause:  An excessive current flowed through the power amplifier.

Supplementary information:   As current of the power amplifier is detected, the abnormal channel can be identified by checking the current detect transistor.
Turning on the power without correcting the abnormality will cause the protection function to work immediately and the power supply will instantly be shut off.
Notes
  1. Applying the power to this unit without correcting the abnormality can be dangerous and cause additional circuit damage. To avoid this, if “PS” and “DC” protection function works 3 times consecutively, the power will not turn on even when the (Power) key is pressed.
  2. In order to turn on the power again, disconnect the power cable of this unit from the AC outlet once and then reconnect it again.
  3. The output transistors in each amplifier channel should be checked for damage before applying power to this unit.
  4. Measuring DC voltage across the emitter resistors for each channel should monitor amplifier current.
WHEN THE PROTECTION FUNCTION WORKED DUE TO A SHORT BETWEEN SPEAKER TERMINALS
Cause:  The line between speaker terminals is shorted.

Supplementary information:  As the excess current is detected after operation of the speaker relay, the shorted speaker terminal and the connected speaker can be identified.
Turning on the power without correcting the abnormality will cause the protection function to work immediately and the power supply will instantly be shut off.

WHEN PROTECTION FUNCTION WORKED DUE TO ABNORMAL DC OUTPUT
Cause:  DC output of the power amplifier is abnormal.
Supplementary information:  The protection function worked due to a DC voltage appearing at the speaker terminal. A cause could be a defect in the amplifier.
Turning on the power without correcting the abnormality will cause the protection function to work in 3 seconds and the power supply will be shut off.


WHEN THE PROTECTION FUNCTION WORKED DUE TO ABNORMAL VOLTAGE IN THE POWER SUPPLY SECTION
Cause:  The voltage in the power supply section is abnormal.
Supplementary information:  The protection function worked due to a defect or overload in the power supply.
Turning on the power without correcting the abnormality will cause the protection function to work in 1 seconds and the power supply will be shut off.

History of protection function: 
  • When the protection function has worked, its history is stored in memory with a backup.
  • Even if no abnormality is noted while servicing the unit, an abnormality, which has occurred, previously can be defined as long as the backup data has been stored.
  • The history of the protection function will be initialized when self-diagnostic function is cancelled by selecting No. 24-2. PRESET RESERVED  (Memory initialized) sub-menu.
OPERATION PROCEDURE OF MAIN MENU AND SUB-MENU

There are 26 main menu items, each of having sub-menu items.
  • Main menu selection
Select the menu using “SCENE TV” (forward) and “SCENE BD/DVD” (reverse) keys.

  • Sub-menu selection
Select the sub-menu using “SCENE RADIO” (forward) and “SCENE CD” (reverse) keys.


FUNCTIONS IN SELF DIAGNOSTIC FUNCTION MODE
In addition to the self-diagnostic function menu items, functions as listed below are available.
  1. Power ON/OFF
  2. Master volume
  3. Muting
  4. Input selection
  5. Functions related to the tuner and the set menu are not available.
INITIAL SETTINGS USED TO START SELF DIAGNOSTIC FUNCTION

The following initial settings are used when starting self-diagnostic function.
When self-diagnostic function is canceled, these settings are restored to those before starting self-diagnostic function.
  1. Master volume: -20 dB
  2. Input: AV5
  3. Main menu: 1. ANALOG BYPASS
  4. Speaker setting:  LARGE, Bass out to SWFR (All channels).
DETAILS OF SELF DIAGNOSTIC FUNCTION MENU

BYPASS
Using the sub-menu, it is possible to select ANALOG BYPASS output.
ANALOG BYPASS
The analog input audio signal is output to FRONT L/R in DIRECT mode.
Posted By: FRANK at 04:32
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