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 February 2019

PIONEER DVR 520H-S DVR 65H-S DVD RECORDER – SERVICE DIAGNOSIS – HOW TO ENTER SERVICE MODE – ADJUSTMENTS - SMPS SCHEMATIC

Pioneer DVR 520H-S DVR 65H-S DVD recorder – Service diagnosis – How to enter Service mode – adjustments - SMPS schematic


How to enter the service mode – ID number enter procedure – Model setting – Pioneer DVR520H – Pioneer DVR 65H DVD recorder - SMPS circuit diagram used ICs MR1521 (Switching regulator) – MD5001T (4v, 6V and 2V5 DC regulators) – MD1322N 
Service Diagnosis List
CPRM ID NUMBER AND DATA SETTING
The Setting is necessary
• " CPRM ERR" is displayed on the FL display immediately after the power is turned on or in Stop mode.
• When the MAIN ASSY , DRIVE ASSY or the FLASH ROM is exchanged.
MODEL SETTING DOWNLOAD METHOD
The Setting is necessary
• When the MAIN ASSY is replaced.
• When the JCKB ASSY is replaced.
• When the MAIN ASSY and JCKB ASSY is replaced.

SERVICE MODE
[First Screen] (Version information, etc)
[Sub Screen 1] (Result of error-rate measurement : Video mode/VR mode)
[Sub Screen 2] (HDD information)
[Second Screen] (ATA/ATAPI debug screen)
[Sub Screen 3] (writer maintenance information of ATA/ATAPI DEBUG OSD)
[Sub Screen 4] (ATA/ATAPI DEBUG OSD_LD degradation judgement)
[Fourth Screen] (VR-recording error log)
[Sub Screen 4] (Error log for VR recording)
[Fifth Screen] (Error log for VR playback)
[Sub Screen 2] (Error log for VR playback)
DV DEBUG MODE
[Third Screen] (DV debug information)
ERROR RATE MEASUREMENT
Only Video mode measurement
VIDEO ADJUSTMENT FOR SPECIFIC AREA
Purposes
Depending on the area, jitter may appear in a picture received by the tuner, as conditions of signals received by the tuner are different from area to area. To correct this kind of problem, the function of the System Codec AVIO control section for adjusting signals received by the tuner can be used.
AGING MODE
CPRM ID NUMBER AND DATA SETTING
Entering the ID Number and ID Data for DVD Recorder
For the DVD recorder, it is necessary with the recoding/playback of DVD–RW disc to set an individual number (ID number) and ID data to each recorder. If the number and data are not set correctly with the following procedure, operations in the future may not be guaranteed.
You will find the ID number to be set on the ID label on the rear panel.
[If no ID label is found on the rear panel, write down the specified ID number by checking it according to "How to confirm the ID number"]
• " CPRM ERR" is displayed on the FL display immediately after the power is turned on or in Stop mode.
• When the MAIN ASSY , DRIVE ASSY or the HDD is exchanged.
Input Flow of the ID No. and ID data when exchanging HDD, MAIN Assy or Drive Assy
How to Input the ID Number and ID Data
Note:
Be sure to enter the ID number in Stop mode.
Use the service remote control (GGF1381) for operations. Only opening/closing of the tray are performed from the player.
The ID data disc is swept out automatically after the recorder has read the data from it.
To enter the input mode, press ESC + STEREO sequentially in a status with no ID number set, such as after FLASH-ROM downloading.
As number input is enabled when the unit enters the input mode, input the 9-digit ID number.  (The entered number is also displayed on the FL display.)
After inputting the number, press SEARCH to register the ID number.
When the ID number has been registered, the unit enters the ID data input mode. (The FL display indicates "INSERT ID.")
In this condition, place the ID data disc on the tray and close the tray using the CLOSE key  on the player.
While the data are being read, the message is displayed on the screen.  (The FL display indicates "LOAD ID.")
When the ID data have been read, the data are written to the FLASH-ROM.  (The FL display indicates "WRITE ID.")
When the ID data have been written to the FLASH-ROM, the message "Rom Write OK" is displayed on the screen.  (The FL display indicates "ID DATA OK.")
After confirming this message, press CLEAR to exit the input mode.
How to Confirm the ID Number
Press ESC + STEREO sequentially with an ID number already set, and the unit enters the ID number confirmation mode.
The set ID number is displayed on the screen (and on the FL display), permitting you to confirm it.
To exit this mode, press CLEAR.
How to Clear the ID Number
Press ESC + STEREO sequentially with an ID number already set, and the unit enters the ID number confirmation mode.
Input the same number as the ID number you have set.
After inputting the number, press STOP .
Only when the entered number matches the set ID number, the ID number is cleared and the unit exits this mode.
If the numbers do not match, you must return to step 2. ( STOP is not accepted until 9 digits are entered.)
MODEL SETTING
The Setup is Necessary When:
a) When the MAIN Assy is replaced
b) When the JCKB Assy is replaced
c) When the MAIN Assy and JCKB Assy are replaced Note : Make sure of setting the correct number.
How to Setup the Model
1) After power on, the following screen is displayed on TV monitor.  Press " 22 " by using the remote control unit for service(GGF1381).
2) The following screen is displayed on TV monitor.  Press " 011 " by using the remote control unit for service. The setting complete when OSD is disappeared.
3) Unplug the power cable.
4) Reset the recorder to all its factory settings.
1. Make sure that the recorder is on.
2. Press and hold [STOP] and press [STANDBY/ON] key on the front panel.  The recorder turns off with all settings reset.
5) Enter the Service Mode and then confirm the Model Name " DVR-520H/KU/CA ".
1. Make sure that the recorder is on.
2. Press [ESC] then [DISP] keys by using the remote control unit for Service.
Notes:
1) After the setting complete, you can NOT CLEAR the setting data.  Make sure the pressing number.
2) " NG " is appeared on TV when unsuitable number is pressed.  In such a case, please unplug the power cable and plug it again. Then restart the model setting.
SMPS circuit diagram