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 !

Saturday, 30 March 2019

SONY HCD-EC68P - EC78P HOW TO ENTER SERVICE MODE - _ RESET

HOW TO ENTER SERVICE MODE - SONY HCD-EC68P - EC78P _ RESET

SONY HCD-EC68P/EC78P _ TEST MODE

 COLD RESET
The cold reset clears all data including preset data stored in the memory to initial conditions. Execute this mode when returning the set to the customer.
1. In the standby status, press the [Standby/Power] button to turn the power on.
2. Press three buttons of [Stop], [FUNCTION] and at last [Standby/Power] simultaneously.
3. When “RESET” appears, the set enters standby status.
PANEL TEST MODE
1. In the standby status, press the [Standby/Power] button to turn the power on.
2. Press three buttons of [DISPLAY], [Stop], and [FUNCTION] simultaneously.
3. When the panel test mode is activated, LEDs and segments of the liquid crystal display are all turned on.
Version Check
1. In the panel test mode (all LEDs and segments of the liquid crystal display are turned on), press the [FUNCTION] button.
2. On the liquid crystal display, date and version are displayed “xxxxxxxx”. For example, “1114V102”.
3. From this status, press the [Pause] button, and the destination and model name are displayed. For example, “CE2” and “ESLO–”.
4. To release from this mode, press three buttons of [DISPLAY], [Stop], and [FUNCTION] simultaneously.
Key Test Mode
1. In the panel test mode (all LEDs and segments of the liquid crystal display are turned on), press the [DISPLAY] button.
2. The message “KEY0 0 0”displayed. Whenever any buttons are pressed and the [VOLUME] dial is turned, the value is changed.
3. To release from this mode, press three buttons of [DISPLAY], [Stop], and [FUNCTION] simultaneously.
CD REPEAT 5 LIMIT CANCEL MODE
Number of repeats for CD playback is 5 times when the repeat mode is “REPEAT”. This mode enables CD to repeat playback for limitless times.
1. Press the [Standby/Power] button to turn the power on.
2. Press the [FUNCTION] button to select CD function.
3. Press three buttons of [DISPLAY], [Stop], and [|◄◄ – ] TUNING ◄◄ -- ] simultaneously.
4. It enters the CD repeat 5 limit cancel mode and displays “NO LIMIT”
5. To release this mode, press the [Standby/Power] button to turn the power off.
CD SHIP MODE
This mode can run the CD sled motor optionally. Use this mode, for instance, when cleaning the optical pick-up.
1. Press the [Standby/Power] button to turn the power on.
2. Confirm there is no disc in all trays.
3. Press the [FUNCTION] button to select CD function.
4. Press two buttons of [CD ►] and [Standby/Power] simultaneously.
5. Set to the CD ship mode. (chucking on)
6. After blink “STANDBY”, “LOCK” is displayed, disconnect the AC plug.
CD TRAY LOCK
This mode is for the antitheft of CD disc in shop. (not for transport) Procedure:
1. Press the [Standby/Power] button to turn the power on.
2. Press the [FUNCTION] button to select CD function.
3. Insert a disc.
4. While pressing the [Stop] button, press the [Eject] button for more 5 seconds.
5. The message “LOCKED” is displayed and the disc tray is locked. (Even if exiting from this mode, the disc tray is still locked)
6. If press the [Eject] button to eject the disc, the message “LOCKED” is displayed and cannot eject the disc.
7. To release this lock, while pressing the [Stop] button, press the [Eject] button for 5 seconds again.
8. The message “UNLOCKED” is displayed and the disc tray is unlocked.
CD POWER MANAGE
This mode is for switch the CD power supply on/off. Even if this state pulls out AC plug, it is held.
1. Press the [Standby/Power] button to turn the power on.
2. Press the [FUNCTION] button to select CD function.
3. Press the [Standby/Power] button again to turn the power off (standby).
4. After pressing the [DISPLAY] button, while pressing the [Stop] button, press the [Standby/Power] button.
5. It turns power on and displays “CD POWER”, then display “ON” or “OFF”.
CHANGE-OVER THE AM TUNING INTERVAL (Except EC78P: UK model)
The AM tuning interval can be changed over 9 kHz or 10 kHz.
1. Press the [Standby/Power] button to turn the power on.
2. Press the [TUNER/BAND] button to select TUNER (AM) function.
3. Press the [Standby/Power] button again to turn the power off (standby).
4. After pressing the [DISPLAY] button, while pressing the [TUNING +►►; ►►|] button, press the [Standby/Power] button.
5. It turns power on and display “9k STEP” or “10k STEP”, and thus the tuning interval is changed over.
CD SHIP AND COLD RESET
1. Press the [Standby/Power] button to turn the power on.
2. Confirm there is no disc in all trays.
3. Press the [FUNCTION] button to select CD function.
4. Press three buttons of [PLAY MODE/TUNING MODE], [|◄◄ – TUNING] and [Standby/Power] simultaneously.
5. After blink “STANDBY”, “RESET” is displayed, disconnect the AC plug
COMMON TEST MODE
1. Press the [Standby/Power] button to turn the power on.
2. Press three buttons of [PLAY MODE/TUNING MODE], [TUNING +►► FFW], and [DISPLAY] simultaneously.
3. It enters the common test mode and displays “COMMON”.
4. Each time the [VOLUME] dial is turned, “VOL MIN”, “VOL 16”, and “VOL MAX” are displayed.
5. To release from this mode, press three buttons of [PLAY MODE/TUNING MODE], [TUNING +►► ►►|], and [DISPLAY] simultaneously.
CD SERVO TEST MODE
This mode can check the servo system operations of the optical pick-up system (= optical unit + CD board).
Note1: Do not enter the [CD SERVO TEST MODE] while any other test mode is in progress.
Note2: Do not enter any other test mode while the [CD SERVO TEST MODE] is in progress.
How to Enter the CD Servo Test Mode
1. Press the [Standby/Power] button to turn the power on.
2. Press the [FUNCTION] button to select CD function.
3. Press three buttons of [CD►, |◄◄  ], [◄◄ – TUNING] and [DISPLAY] simultaneously.
4. It enters the CD servo test mode and displays “BDT S CU”.
How to Exit from the CD Servo Test Mode
1. Press three buttons of [CD ►], [|◄◄ , ◄◄ – TUNING] and [DISPLAY] simultaneously.
2. It releases from the CD Servo Test Mode and returns to the ordinary CD function.
CD SERVICE MODE
This mode can move the SLED of the optical pick-up, and also can turn the optical pick-up laser power on and off.
1. Press the [Standby/Power] button to turn the power on.
2. Press three buttons of [CD ►], [TUNING + ►►, ►►| ], and DISPLAY simultaneously.
3. Press the [FUNCTION] button to select CD function.
4. It enters the CD service mode and displays “SERVICE”.
5. To exit from this mode, press three buttons of [CD ► ], [TUNING + ►►, ►►| L] and DISPLAY simultaneously.
Key Operation:
[TUNING +►►, ►►|], [|◄◄,  ◄◄ – TUNING]:
Use these keys to move the SLED. When [TUNING + ►►, ►►|] is pressed in this mode, the SLED moves to outer circumference and the message “SLED OUT” is displayed.
When [|◄◄,◄◄  – TUNING] is pressed in this mode, the SLED moves to inner circumference and the message “SLED IN” is displayed.
DISPLAY
Use this key to turn the optical pick-up laser power on and off. When the laser power is turned on, the message “LD ON” is displayed. When the laser power is turned off, the message “LD OFF” is displayed.
CD ERROR CODE
The past errors of the CD mechanism (CDM) are displayed as the CDM Errors, and those of the optical pick-up system (= optical unit + CD board) are displayed as the BD Errors.
1. Press the [Standby/Power] button to turn the power on.
2. Press the [FUNCTION] button to select CD function.
3. Press three buttons of [TUNING + ►►, ►►|], [Stop and [DISPLAY] simultaneously.
4. Then, the CDM error code is displayed as “M0xxxxxx” (x means hexadecimal number) on the liquid crystal display as shown below.
5. Every pressing of the [TUNING + ►►, ►►|] button in this mode increments the number after “M” starting from “M0” up to “M9”, and then returns to “M0”. Every pressing of the [|◄◄,◄◄ – TUNING] button in this mode decrements the number after “M”. The smaller the error code number is, the newer the error content is.
6. When the [PLAY MODE/TUNING MODE] button is pressed then, the BD error code is displayed as “D0xxxxxx” (x means hexadecimal number) on the liquid crystal display as shown below. In the same way as the CDM error code, use of the [TUNING +►►, ►►| and the [|◄◄,◄◄– TUNING] buttons in this mode enables tracing of the error history.
7. To release from this mode, press the [I/1] button to turn the power off.
Contents of “CDM Errors”
Error display example
M 0 FF 11 42
1 2 3 4
1 It indicates the error history number 0 to 9: The error code number 0 indicates the newest error.
2 It indicates whether the CDM error occurs in the normal operations or during the initialization operation.  FF : The error has occurred in the normal operations.  Other than FF : The error has occurred during the initialization operation.
3 It indicates the processing during which the trouble has occurred.
01: The disc EJECT processing is in progress.
02: The disc INSERTION-WAITING processing is in progress.
03: Processing of the disc INSERTION-REQUEST for the upper CD tray is in progress.
04: Processing of the disc EJECTION-REQUEST for the upper CD tray is in progress.
05: The disc pulling-in operation is in progress.
06: The disc chucking processing is in progress.
07: The disc re-chucking processing is in progress.
08: The disc chucking-release completion operation is in progress.
4 It indicates the operation during which the trouble has occurred.
00 : Waiting for the operation.
10 to 13 : The disc EJECT operation is in progress.
20 : The disc pulling-in operation is in progress.
30 : The disc chucking-release operation is in progress.
40 to 43 : The disc EJECT operation due to error is in progress.
Contents of “BD Errors”
Error display example
D 0 02 09 01
1 2 3 4
1 It indicates the error history number.  0 to 9: The error code number 0 indicates the newest error.
2 It indicates the error content
01: The focus servo cannot lock-in.
02: GFS is no good (NG).
03: The startup time exceeds the specified period of time (time over)
04: The focus servo is unlocked continuously.
05: Q code cannot be obtained within the specified period of time.
06: The tracking servo cannot lock-in.
07: Blank disc
3 It indicates the on-going processing of optical pick-up system (= optical unit + BD board) when the trouble has occurred.
01: The CD SHIP mode processing is in progress.
02: The POWER OFF processing is in progress.
03: The INITIALIZE processing is in progress.
04: The optical pick-up system (= optical unit + BD board) is in the stop state.
05: The STOP operation is in progress.
06: The startup processing is in progress.
07: The TOC read-in processing is in progress.
08: The SEARCH operation is in progress.
09: The PLAY operation is in progress.
0A: The PAUSE operation is in progress.
0B: The PLAY – MANUAL SEARCH operation is in progress.
0C: The PAUSE – MANUAL SEARCH operation is in progress.
4 It indicates the operation that is being processed when the trouble has occurred.
It indicates the step number of each processing specified by 3.  Because the numbers of steps are different in each processing, this number is different in each processing.
CD FACTORY MODE
Note1 Do not enter the [CD FACTORY MODE] while any other test mode is in progress.
Note2 Do not enter any other test mode while the [CD FACTORY MODE] is in progress.
1. Press the [Standby/Power] button to turn the power on.
2. Press the [FUNCTION] button to select CD function
3. Press three buttons of [CD ►], [FUNCTION], and [DISPLAY] simultaneously.
Posted By: FRANK at 03:22
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