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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Tuesday 5 March 2019

SONY TR-DG500 - TR-DG600 - MULTI CHANNEL AV RECEIVER – TEST MODES – FACTORY RESET – VFD DISPLAY CHECKING – POWER AMPLIFIER SCHEMATIC DIAGRAM – AV RECEIVER REPAIR AND SERVICE

SONY TR-DG500 - TR-DG600 - MULTI CHANNEL AV RECEIVER – Test modes – Factory reset – VFD display checking – Power amplifier schematic diagram – AV Receiver Repair and service

                                                Category: AV Receiver Repair and Service 

Contents of this article 

  • Factory rest procedure
  • VFD Checking procedure
  • Command mode selection  


SONY TR-DG500 - TR-DG600

TEST MODE
FACTORY PRESET MODE
All preset contents are reset to the default setting.
Procedure:
While depressing the [SPEAKERS OFF/A/B/A+B%] and the [MOVIE] buttons simultaneously, press the POWER button to turn on the main power.
The message “FACTORY” appears for a moment and the present contents are reset to the default values.
AM CHANNEL STEP 9 kHz/10 kHz SELECTION MODE (US, Canadian, E2 model only)
Either the 9 kHz step or 10 kHz step can be selected for the AM channel step.
Procedure:
Turn the [INPUT SELECTOR] control to set AM and press the POWER button to turn off the main power.
While depressing the [TUNING MODE] button, press the POWER button to turn on the main power.
Either the message “9k STEP” or “10k STEP” appears for a moment and select the desired step.
VACUUM FLUORESCENT DISPLAY TEST MODE
All fluorescent segments are tested. When this test is activated, all segments light on at the same time, then each segment lights on one after another.
Procedure:
While depressing the [TUNING MODE] and the [DISPLAY] buttons simultaneously, press the POWER button to turn on the main power.
1. ALL segments light on.
2. Turn the [INPUT SELECTOR] control, confirm display.
3. Turn the [INPUT SELECTOR] control, confirm display.
[MULTI CHANNEL DECODING] LED light on.
4. Turn the [INPUT SELECTOR] control, all segments and all LEDs light off.
SOUND FIELD CLEAR MODE
The preset sound field is cleared when this mode is activated.
Use this mode before returning the product to clients upon completion of repair.
Procedure:
While depressing the [2CH] button, press the ?/1 button to turn on the main power.
The message “S.F. CLR.” appears for a moment and initialization is performed.
SOFTWARE VERSION DISPLAY MODE
The software version is displayed.
Procedure:
While depressing the [SPEAKERS OFF/A/B/A+B] and the [DISPLAY] buttons simultaneously, press the POWER  button to turn
on the main power.
The model name, destination and the software version are displayed for a moment.
KEY CHECK MODE
Button check
Procedure:
While depressing the [SPEAKERS $OFF/A/B/A+B%] and the [2CH] buttons simultaneously, press the ?/1 button to turn on the main power.
Either the message “REST 13” (STR-DG500) or “REST 14”
(STR-DG600) appears.
Every pressing of any button other than the POWER counts down the buttons. The buttons which are already counted once are not counted again. When all buttons are pressed “REST 00” appears.
AUTOBETICAL MODE (AEP, UK model only)
When this mode is used, the receiver scans the broadcasts that can be received by the tuner, and sets up the broadcasts.
Be sure to start scanning after connecting the antenna.
Procedure:
Check that the antenna is connected.
While depressing the [MEMORY/ENTER] button, press the POWER button to turn on the main power.
The message “AUTO-BETICAL SELECT” appears for a moment and the receiver starts scanning.
COMMAND MODE SELECTION MODE
The command mode (AV1 or AV2) of the remote commander can be selected.
Procedure:
While depressing the [INPUT MODE] button, press the POWER button to turn on the main power. Either the message “C.MODE.AV 1” or “C.MODE.AV 2” appears for a moment and select the desired mode.
POWER AMPLIFIER CIRCUIT DIAGRAM 
CLICK ON THE IMAGE TO ZOOM IN
Posted By: FRANK at 02:47
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