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.

How to use the site:
- If you landed here via any Search Engine, you will get what you searched for and you can search more using the search this blog feature provided by Google. You can visit more posts scrolling the left blog archive of all posts of the month/year,
or you can click on the main photo-page to start from the main page. Doing so it starts from the most recent post to the older post simple clicking on the Older Post button on the bottom of each page after reading , post after post.

You can even visit all posts, time to time, when reaching the bottom end of each page and click on the Older Post button.

- If you arrived here at the main page via bookmark you can visit all the site scrolling the left blog archive of all posts of the month/year pointing were you want , or more simple You can even visit all blog posts, from newer to older, clicking at the end of each bottom page on the Older Post button.
So you can see all the blog/site content surfing all pages in it.

- The search this blog feature provided by Google is a real search engine. If you're pointing particular things it will search IT for you; or you can place a brand name in the search query at your choice and visit all results page by page. It's useful since the content of the site is very large.

Note that if you don't find what you searched for, try it after a period of time; the site is a never ending job !

..............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 !

Friday, 8 March 2019

SHARP BD-AMS20U BLU RAY/DVD PLAYER INITIALIZATION SOFTWARE UPDATE TROUBLESHOOTING AND FRONT PANEL CIRCUIT

SHARP BD-AMS20U BLU RAY/DVD PLAYER INITIALIZATION SOFTWARE UPDATE TROUBLESHOOTING AND FRONT PANEL CIRCUIT


SHARP BD-AMS20U 

BLU RAY/DVD PLAYER 

INITIALIZATION SOFTWARE UPDATE TROUBLESHOOTING AND FRONT PANEL CIRCUIT 


UPGRADING THE SOFTWARE VERSION
1. With a CD
1. Write the updated software on a CD to prepare the version-upgrading CD.
2. Connect the set to the monitor with an HDMI cable. (Keep the HDMI cable connected until the version-upgrading has been completed.)
3. Using the “POWER” key (on the set itself or on the remote controller), turn on the power.
* Do not turn on the power with the “EJECT” key.
4. Press the “EJECT” key to open the tray. Place the upgrading CD on the tray and press the “EJECT” key again to close the tray.
5. The tray is closed and the power turns off itself.
6. The power turns on itself and the upgrading gets started.
LCD display: S-UP blinking > S-UP kept on
Mode display: Blue LED blinking > Blue LED turns off
Monitor screen: Upgrading progress displayed
7. When the software has been 100% overwritten, the tray opens itself and the power turns off itself.
8. Take the CD out of the tray and press the “POWER” key to turn on the power again.
9. When the wallpaper shows up, hold down the “POWER” key to do the resetting. (Keep the “POWER” key depressed until the RESET message appears on the LED. (About 10 seconds))
10.Press the “POWER” key again to turn on the power.
11.When the wallpaper shows up again, move from [Settings] to [Version] to make sure the software is upgraded.
12.When the upgrading has been successfully made, close the [Version] confirm screen and turn off the power. If it has failed, take the procedure over again from Step 3 above.
2.With a USB memory
1. Write the updated software on a USB memory to prepare the version-upgrading USB memory.
2. Connect the set to the monitor with an HDMI cable. (Keep the HDMI cable connected until the version-upgrading has been completed.)
3. Using the “POWER” key (on the set itself or on the remote controller), turn on the power.
* Do not turn on the power with the “EJECT” key.
4. Insert the upgrading USB memory into the USB port.
5. When the USB memory has been recognized (the “x” mark on the USB icon disappears and the USB recognition on-screen display appears), move from [Settings], [Software Update Settings], [Manual Update] to [USB Memory], and then press the “ENTER” or “ ” key.
6. Press “OK” on the USB recognition confirm screen.
7. The version confirm screen appears. Select “YES”.
8. The power supply caution shows up. Press “OK”.
9. The power turns on itself and the upgrading gets started.
LCD display: S-UP blinking > S-UP kept on
Mode display: Blue LED blinking > Blue LED turns off
Monitor screen: Upgrading progress displayed
10.When the software has been 100% overwritten, the power turns off itself.
11.Draw the USB memory out of the USB port and press the “POWER” key to turn on the power again.
12.When the wallpaper shows up, hold down the “POWER” key to do the resetting. (Keep the “POWER” key depressed until the RESET message appears on the LED. (About 10 seconds))
13.Press the “POWER” key again to turn on the power.
14.When the wallpaper shows up again, move from [Settings] to [Version] to make sure the software is upgraded.
15.When the upgrading has been successfully made, close the [Version] confirm screen and turn off the power. If it has failed, take the procedure over again from Step 3 above.
KEY LOCK FUNCTION 
You can set the keylock to prevent accidental operations. This function allows TVs compatible with AQUOS LINK to also perform a Key Lock on the player. Press and hold (Lock) for more than 3 seconds.
# Each time you perform this operation, the function is activated or deactivated.
# If you try to operate the Player while the keylock function is set, "Hold" blinks on the front display panel to indicate that the keylock function is set.
RESET THE PLAYER
When the wallpaper shows up, hold down the “POWER” key to do the resetting. Keep the “POWER” key depressed until the RESET message appears on the LED.
TROUBLESHOOTING 
Main PWB failure to get started.
CHECK POINTS 
Are there 12V inputs at pins 14, 15 of SC9001? >  Check the power unit and connector.
Is there AT5V output at TL9019? > Check IC9004 (DC-DC converter for AT5V) and its peripheral circuits.
Are there 3.3V output signals coming from pin 15 (MAIN_P-CON) of IC2501 (front microprocessor)? >  Is there 3.3V input signal coming from pin 40 (reset) of IC2501 (front microprocessor)?  >Check IC2502 (reset IC) and its peripheral parts.
Is there 16MHz oscillation waveform at pins 44 and 45 (clock) of IC2501 (front microprocessor)? > Check FL2501 (ceramic oscillator) and its peripheral parts.
Check the power of IC2501 (front micro processor), grounding and their peripheral circuits.
Is there D1.1V (PC) output at TL9016? > Check IC9001 (1.1V DC-DC converter) and its peripheral circuits.
Is there D1.8V (PC) output at TL9018? > Check IC9003 (1.8V DC-DC converter) and its peripheral circuits.
Is there D3.3V (PC) output at TL9017? > Check IC9002 (3.3V DC-DC converter) and its peripheral circuits.
Is there 3.3V input at AF2 (reset) of IC7201 (system LSI)? > Is there 3.3V output signal coming from pin 20 (COLD_RESET) of IC2501 (front microprocessor)? > Check R7239, IC2501 (front microprocessor) and their peripheral circuits. >Check the wiring and soldering conditions along the COLD_RESET line.
Is there an input of about 1.6V along the Y18 (D1CKERSTB) and N20 (D0CKERSTB) lines of IC7201 (system LSI)? > Check the soldering condition of R7211, R7280, R7212 and R7281.
Is there 48MHz oscillation waveform at X7201 (crystal oscillator)? > Check the A2 and A3 (XO/XI) terminals of IC7201 (system LSI) and their peripheral parts.
Are the signals as specified along the AA6 (FRONT_RXD), AC6 (FRONT_TXD and AE6 (FL_BUSY) lines of IC7201 (system LSI)? > Check the relevant terminal of IC7201
(front microprocessor) pins 21 (FRONT_TXD), 22 (FRONT_RXD) and 37 (FL_BUSY) of IC2501 (front microprocessor). Check IC8502 (NAND_FLASH), IC7801- 4 (DDR2 MEMORY) and their peripheral circuits.
No HDMI signal output.
CHECK POINTS 
Does the same trouble remain even by replacing the TV and cable? > Check the TV and cable.
Is the soldering of the terminals of SC4001 (HDMI connector) as specified? >  Correct the SC4001 soldering or replace SC4001 itself.
Is the voltage of over 2V applied at C14 (HDMI_HPD) of IC7201 (system LSI)? > Check Q4003 (level shift circuit) and it peripheral circuits.
Is there input signal of over 2V at pin 28 (F_HDMI_HPD) of IC2501 (front micro processor)? >  Check Q4003, Q4004 (level shift circuit) and their peripheral circuits.
Are there serial signals at F13 (HDMI_SCL) and E13(HDMI_SDA) of IC7201 (system LSI) as well as pins 1 (FR_HDMI_SCL) and 2 (FR_HDMI_SDA) of IC2501 (front microprocessor)? > Check Q4001, Q4002 (level shift circuit) and their peripheral circuits.
Are there data and clock signals at pins 1, 3, 4, 6, 7, 9, 10 and 12 of SC4001 (HDMI connector)? > Is there 5V input at pin 18 of SC4001 (HDMI connector)? > Check IC4001 (5V SW) and its peripheral circuits.
Check A10 (HDMI_TX2N), B10 (HDMI_TX2P), A11 (HDMI_TX1N), B11 (HDMI_TX1P), A12 (HDMI_TX0N), B12 (HDMI_TX0P), A13 (HDMI_TXCN), B13 (HDMI_TXCP) of IC7201 (system LSI) and its peripheral circuits.
Is the soldering of all the terminals of SC4001 as specified? > Correct the soldering or replace a defective connector.
Is there the H signal (3.3V) at TL4023 and pin 3 of Q4003:? > Check the circuit between pin 19 of SC4001 and Q4003.
Is there the H signal (3.3V) at the collector of Q4004? > Check Q4004 and its peripheral circuits.
Are there pulse signals at the Drain and Source terminals of Q4001 and Q4002? > Check pins 15 and 16 of SC4001. Check Q4001, Q4002 and their peripheral circuits.
Are there pulse signals at the Drain and Source terminals of Q4010 and Q4011? > Check Q4001, Q4002 and their peripheral circuits. Check the ABBY1.2V and ABBY3.3V power supplies.
Are there clock and data signals at pins 1, 3, 4, 6, 7, 9, 10 and 12 of SC4001? > Check pins 100 thru 107 and pins 2 thru 9 of IC4004 Check R4019 thru R4026.
Is there 5V signal at pin 18 of SC4001? > Check pins 1 and 5 of IC4001.
No function of USB port at the back.
CHECK POINTS 
Does the same trouble remain even by replacing the USB memory? >  Check the USB memory.
Is there 5V input at pin 7 of J7001 (USB/ LAN connector)? >Are there 5V power at pin 2 and 3.3V input signal at pin 3, both of IC7002 (high-side switch)? > Check Q9012 (DRIVE_5V switch), E9 (USB_PPPON2) of IC7201 (system LSI) and their peripheral circuits. >Check the soldering condition of IC7002 (high-side switch) or replace IC7002 itself.
With the USB memory inserted, are there signals at pins 8 (D-) and 9 (D+) of J7001 (USB/LAN connector)? > Check L7001 and A8 (USB_DM2) and B8 (USB_DP2) of IC7201 (system LSI) and their peripheral circuits.
NO LED DISPLAY
CHECK POINTS 
Are there SEG and COM input signals at D1203? >  Check the soldering condition of D1203. Replace as required.
Are signals and power applied at pins 5 (5V), 3 (STB), 2 (CLK) and 1 (DIO) of IC1201 (LED driver)? > Check IC1201 and its peripheral circuits. Replace as required.
Are there output signals at pins 3 (DISP_SCLK), 4 (DISP_DI/O) and 7 (DISP_STB) of IC2501 (front microprocessor)? > Check SC1201, SC902 FFC harness and CN901, SC9001. Replace as required.
Check R2501, R2502, R2505 and IC2501 as well as their peripheral circuits. Replace as required.

FRONT PANEL CONTROL CIRCUIT DIAGRAM 
CLICK ON THE IMAGE TO ZOOM IN
Posted By: FRANK at 05:01
TAG: , , , , ,