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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All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Friday 8 March 2019

JVC XV-BP1C -XV-BP1UJ BLU RAY PLAYER TROUBLESHOOTING AND POWER SUPPLY CIRCUIT

JVC XV-BP1C -XV-BP1UJ BLU RAY PLAYER TROUBLESHOOTING AND POWER SUPPLY CIRCUIT

JVC XV-BP1C -XV-BP1UJ 

BLU RAY PLAYER 

TROUBLESHOOTING AND POWER SUPPLY CIRCUIT 

TROUBLESHOOTING 
RESET OR POWER CHECK
Check it after connecting the power cable only on interface cable for NO Reset or Power ON.
Are the pin1 of lpb801+5V, pin4 of lpb801+12V respectively after the power cable connecting? >check the power (5V/12V) signal path from smps. Repair the smps block
<Power> is the pin2 of lic901 3.3V? > check the lic901 and lic901 input voltage 5V (pin#3)
<Power> is the pin2 of lic903 1.2V? > check the lic902 and lic902 input voltage 3.3V (pin#3)
Does the pin120 (Reset in) of lic501 change 0V to 1.63V at the power supply initial input mode? > check the aVcc 5volt and Reset circuit. (lR5b0,lR5b1,lc5b0)
Are the lX501 oscillating? > check the lX501(25mhz), check the lic501
<Reference> 1.65V (V14ref) : check pin1 of lic501 2.2V (VFVReF) : check pin2 of lic501 2.2V (VhaVc) : check pin3 of lic501 > check the lic501
SYSTEM CHECK
Does pick-up move to inside or outside?
Does pick-up lens move up/down?
Does laser turn on?
Does bd/dVd-Rom disc play rightly?
TRAY OPERATING IS ABNORMAL
Is there tray control signal input? (lic201 pin41) > is there tray control signal output? (lic501 pin55) > check the connection from lic501 pin55. to lic201 pin4. > Check the serial flash operation.,Check the SATA communication between b/end mpeg chip.
Is there tray drive voltage output? (lic201 pin27,28) > check the lic201
Is there tray drive voltage output? (loading motor) > check the connector lpF301 and FFc cable connection.
SLED OPERATING IS ABNORMAL
Is there sled control signal output? (lic501 pin56,57) > Replace the lic501.
Is there sled drive voltage input? (lic201 pin2,3 ) > check the pcb pattern and components between lic501 and lic201 sled signals
Is there sled drive voltage output? (lic201 pin6,8,9,10) > check the lic201.
Is there sled drive voltage output? (lpm302 pin1,2,3,4) > Replace the sled motor.
SPINDLE OPERATING IS ABNORMAL
Is there spindle control output? (lic501 pin58) > Replace the lic501
Is there spindle drive voltage output? (lic201 pin12, 13,14,16) >  is there Fg signal input? (lic501 pin96) > Check the output of LIC201 Pin19. Check the connector LPM301. Replace the LIC201.
Is there spindle motor input voltage? (lpm301 pin3,4,5,6) > Replace the spindle motor. (traverse assembly)
FOCUS ACTUATOR OPERATING IS ABNORMAL
Is there focus search control signal input? (lic201 pin40) > Check the connection of LIC501 Pin54. Replace the LIC501.
Is there focus search drive voltage output? (lic201 pin34,35) > check the lic201
Check the connection lcn700 pin1,2. > check the signal pattern and application components
Replace the traverse assembly. (pick-up)
LASER OPERATING IS ABNORMAL
Does laser turn on? > Replace the traverse assembly and scan the pick-up barcode. > check the main pcb pick-up interface circuit
Is there ldd vcc voltage input? (lic201 pin32, 33) > pin32 : check the 5V path. pin33 : check the 8.1V path and lic902 operation
Check the ldd data signals. (lcn700 pin39,40,41,42) > is there ldd data signal communication? (lic501 pin44,45,46, 90) > check the signal pattern and
application components > Replace the lic501.
Check the connector lcn700 and pick-up FFC cable connection
Replace the traverse assembly. (pick-up)
HOW TO USE THE BAR-CODE SCAN TOOL
Bar-code scan tool inserts the bar-code values (including skew, Read power, HFM, ld power and so on) to
the Flash-Rom in the loader main board. so, in case of changing the traverse assembly or loader main board,
it is required to pick-up bar-code scan procedure.
BAR-CODE SCAN SYSTEM CONFIGURATION
in order to insert bar-code values (including skew, Read power, hFm, ld power and so on), the following
equipments are needed.
Compulsory equipments
1) personal computer
2) bar-code scan tool (loader tester)
3) 2d bar-code scanner
4) target loader ass’y
5) usb to sata connector
6) power supply
PICK-UP BAR-CODE SCAN TOOL CONFIGURATION.
The loader tester is the application tool for Fa test and also bar-code scan.
The bar-code scan is the one of functions in the loader tester.
Therefore the bar-code scan users should check “only bar code” up in the loader tester.
Loader tester program consists of total 2 files.
Setup.exe
Setup.exe.txt
Setup.exe file is the installation file.
After you install the loader tester program, the LoaderTest.exe file will appear in the wallpaper(background) of windows.
LoaderTester.exe is a program execution file.
Setup.exe.txt is the install Report file.
RUNNING BAR-CODE SCAN TOOL
When running “loadertester.exe” file in the wallpaper(background) of windows, the following screen appears.
Before you start to click “start” button, remind these.
1) “test mode start” should be selected.
2) check “only bar code”
3) click “start”
BAR-CODE SCAN PROCEDURE
1) untie the screw of loader.
2) connect the “usb to sata connector” and “sata power” to the loader.
3) connect the “usb to sata connector” to the pc.
4) connect the “bar-code scanner” to the pc.
5) Run the bar-code scan tool (loader tester).
6) click “start” button
(tip. if drive can not be detected, please plug off and on again the “usb to sata connector” to the pc and
wait for 15 seconds.)
7) sled will move the innermost.
8) Focus on the target of bar-code and pull the trigger of bar-code scanner until bar-code can be scanned
to the bar-code scan tool (loader tester)
9) if bar-code scan succeeds, “ ok” will display in the result windows.
however, bar-code scan fails, “ng” will display in the result windows.
In case you got “ ng” result, please check procedure up from 2 to 8. then try it again.
INTERNAL STRUCTURE OF THE PICK-UP

POWER SUPPLY CIRCUIT 
CLICK OM THE IMAGES TO ZOOM IN
Posted By: FRANK at 03:14
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