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 !

Tuesday, 5 February 2019

SHARP LC-65D64U HOW TO UPGRADE THE FIRMWARE SERVICE MODE

Sharp LC-65D64U How to upgrade the firmware Service mode

How to enter service mode, How to upgrade the software, Main ICs and its function details 65 inch LCD TV Sharp LC65D64U
Entering and exiting the adjustment process mode
1) Before entering the adjustment process mode, the AV position RESET in the video adjustment menu.
2) While holding down the “VOL (–)” and “INPUT” keys at a time, plug in the AC cord of the main unit to turn on the power.
The letter “K” appears on the screen.
3) Next, hold down the “VOL (–)” and “CH (Dn)” keys at a time.
(The “VOL (–)” and “CH (Dn )” keys should be pressed and held until the display appears.)
Multiple lines of blue characters appearing on the display indicate that the unit is now in the adjustment process mode.
When you fail to enter the adjustment process mode (the display is the same as normal startup), retry the procedure.
4) To exit the adjustment process mode after the adjustment is done, unplug the AC cord from the outlet to make a forced shutdown. (When the power was turned off with the remote controller, once unplug the AC cord and plug it again. In this case, wait 10 seconds or so before plugging.)
CAUTION: Use due care in handling the information described here lest your users should know how to enter the adjustment process mode. If the settings are tampered in this mode, unrecoverable system damage may result.
Remote controller key operation and description of display in adjustment process mode; and Display description
Input mode is switched automatically when relevant adjustment is started so far as the necessary input signal is available.
The adjustment values are set to the optimum conditions at the factory before shipping. If a value should become improper or an adjustment is required due to part replacement, make an adjustment according to the following procedure.
The adjustment values are set to the optimum conditions at the factory before shipping. If a value should become improper or an adjustment is required due to part replacement, make an adjustment according to the following procedure.
After replacement of any PWB unit and/or IC for repair, please note the following.
> When replacing the following units, make sure to prepare the new units loaded with updated software.  MAIN Unit: DUNTKE207FM01
Upgrading of each microprocessor software
CAUTION: Never “POWER OFF” the unit when software upgrade is ongoing.  Otherwise the system may be damaged beyond recovery.
Software version upgrade
The model employs the following software.
• Main software
• Monitor microprocessor software.
The main software and the monitor microprocessor software can be upgraded by using a general-purpose USB Memory.  The followings are the procedures for upgrading, explained separately for the main software, and the monitor microprocessor software.
Main software version upgrade
Get ready before you start
• USB Memory of 128MB or higher capacity.
• PC running on Windows 98/98SE/ME/2000/XP operating system.
• USB Memory reader/writer or PC with a USB port.
• The file system of a USB memory is FAT. (FAT32 is not applied)
• Use the USB memory without other functions. (lock and memory reader...etc)
Preparations
To upgrade the main software, it is necessary to get ready the USB Memory for version upgrade before you start.
Follow the steps below and create the USB Memory for version upgrade.
1. Copy the file D64UAxxx.USB (named temporarily) for version upgrade to the root directory (folder) of the USB Memory.
NOTE: In the USB Memory drive, do not store other folders or unrelated files, or more than one file for version upgrade.
Now the USB Memory for version upgrade is ready.
How to upgrade the software
1. Unplug the AC cord.
2. Insert the USB Memory for version upgrade (prepared as above) into the service socket located Right side from center at terminals, above HDMI4 terminal in the rear of the unit.
3. Plug in the AC cord with power button pressed down after 5 seconds, release the power button.
4. After the unit startup, the system upgrade screen as shown below appears within 20-40 seconds.
5. Even a single failure in the process will trigger the upgrade failure screen.
NOTE: In the event of a failure, repeat the upgrade process. If the process repeatedly fails, it is likely that the hardware need fixing.
6. Upon completion of the whole process, the upgrade success screen as shown below appears. You can check the new software version on this screen. The version information appears after the upgrade is complete.
7. Unplug the AC cord and remove the USB Memory for version upgrade.
8. Now the software version upgrade is complete.
NOTE: When you are done with the software version upgrade, start the set, go to the top page of the adjustment process screen and check the main software version information.
Monitor microprocessor software version upgrade
Create the USB memory for monitor microprocessor software version upgrade in the same manner as explained in the “Main software version upgrade”.
Copy the file D64UVAxx.USB and SALEMxxx.BIN (named temporarily) for monitor microprocessor software version upgrade to the USB memory.
How to upgrade the software
1. Unplug the AC cord.
2. Insert the USB memory for version upgrade (prepared as above) into the service socket located Right side from center at terminals, above HDMI4 terminal in the rear of the unit.
3. Plug in the AC cord with power button pressed down.
4. After 5 seconds, release the power button.
CAUTION: The moment this operation is done, the upgrading of the monitor microprocessor software starts. While the upgrade is ongoing, never power off the unit. Otherwise the upgrade will fail and the system may be serious damaged beyond recovery (inability to start).
• After the monitor microprocessor software is upgraded, also perform the 'Industry Init'.
5. After the unit startup, the upgrade starts. The power led will blink continuously. Also, an upgrade screen will be shown during a minor upgrade.
6. If the upgrade fails, power led will stop blinking. Also, the upgrade failure screen will be shown if upgrade screen was shown at 5.
7. Up on completion of the whole process, power and OPC LED will blink alternately. Also, the upgrade success screen will be shown.
8. Unplug the AC cord and remove the USB Memory for version upgrade.
9. Now the software version upgrade is complete.
NOTE: When you are done with the software version upgrade, start the set, go to the top page of the adjustment process screen and check the monitor microprocessor software version information and panel size information.
MAJOR IC INFORMATIONS
IC501 (VHiSM5351AF-1Q)
This I2C bus-controlled audio/video switch is designed to switch video signal between two-system color difference (component) signal, one-system S video signal and three-system composite signal, and to switch audio signal between three-system signal.
The analog audio/video signal from the INPUT-1 or INPUT-2 and INPUT-3 input terminal is fed into this IC for selection.
The video output signal from this IC flows through a low-pass filter into the video signal processing circuit IC8001 (iXC138WJQZ).
The audio output signal from this IC flows into audio codec IC1403 (AK4682EQ).
IC2701 (VHiYDA147SZ-1Y)
The Class-D type digital audio power amplifier YDA147SZ gives maximum continuous output of 15 W/ch.
IC803 (VHiSii9181+-1Q)
The Sii9181 is TMDS Switch devices supporting Revision 1.3 of the HDMI Specification.
It is a single HDMI input, single output device used to buffer the TMDS signal.
The Sii9181 is used to receive a set of HDMI/DVI signals from the HDMI/DVI receiver-port, and to generate a HDMI/DVI fully compliant stream as an output.
It also provides DDC/HDCP, HPD, and +5V switching to allow full compliance to the HDMI/DVI Specification.
On this IC, the INPUT-4 HDMI port is switched.
IC1403 (VHiAK4682EQ-1Y)
This IC provides for 2-channel A/D and 4-channel D/A (192-kHz sampling).
The analog audio signal from IC501 or INPUT-6 (HDMI-analog audio) or INPUT-7 input terminal is fed into this IC for selection.
The selected signal flows through A/D-unit into the video signal processing circuit IC8001 (iXC138WJQZ).
The digital audio signal (I2S) from IC1402 flows into audio power amplifier IC2701 and AUDIO OUTPUT terminal via each D/A-unit.
IC1502 (VHiSii9125+-1Q)
The Sii9125 supports the HDMI V1.3 specification and allows receipt of 10/12-bit color depth up to 1080p resolutions.
A single Sii9125 provides two HDMI input ports.
This IC decodes TMDS signal to Digital Video signal.
Compatible with the HDCP system, encrypted signals can also be received.
This IC responds to the INPUT-4, 5, 6 HDMI (High-Definition Multimedia Interface) selected by IC1604.
IC1604 (VHiSii9185+-1Q)
The Sii9185 is the TMDS Switch devices supporting Revision 1.3 of the HDMI Specification.
This IC is used to select a single set of HDMI/DVI signals from one of three HDMI/DVI receiver-ports, and to generate a fully compliant HDMI/DVI stream as an output.
It also provides DDC/HDCP, HPD, and +5V switching to allow full compliance to the HDMI/DVI Specification.
On this IC, the INPUT-4, 5, 6 HDMI port are switched.
IC2002 (RH-iXB986WJN7Q)
The monitor microprocessor is intended to communicate with the main microprocessor and to operate the system.
It also controls power of the entire system.
IC3201 (VHiTB1305FG-1Q)
The TB1305FG has function sync separation and H/V format detector for TV component video signals. (INPUT1/3 and INPUT7)
This IC is controlled by I2C Bus interface.
IC3301 (VHiTHC7981+-1Q)
The THC7981 is 10bit A/D Converter for analog video signal. (Component: INPUT1 and 3, analog RGB: INPUT7)
This IC is controlled by I2C Bus interface and corresponds from 10 to 170MSPS for Full spec HD-TV.
IC8001 (RH-iXC138WJQZQ)
This LSI is FULL HIGH-DEFINITION 1080P DIGITAL TV SYSTEM-ON-A-CHIP. It combines a cable/terrestrial 4/1024-QAM and 8/16-VSB receiver, a transport processor, a digital audio processor, a high definition (HD) MPEG video decoder, 2D graphics processing, digital processing of analog video and audio, analog video digitizer and DAC functions, stereo high-fidelity audio DACs, a 330-MHz millions of instructions per second (MIPS) processor, and a peripheral control unit providing a variety of television control functions.
The cable/terrestrial receiver directly samples a tuner output with an analog-to-digital converter (ADC). The LSI digitally resamples and demodulates the signal with recovered clock and carrier timing, filters and equalizes the data, and passes soft decisions to an ATSC A/53 and ITU-T J.83 Annex A/B/C-compatible decoder. It has an MPEG-2 Digital Video Broadcasting (DVB)-compliant transport processor with advanced section filtering capability, DVB descrambler, and an MPEG-2 (MP@HL profile) video decoder.
Audio support includes a BTSC and a Dolby AC3/MPEG-2 Layer 1, 2, audio decoder. The LSI provides analog and digital audio/video outputs. A SPDIF output and a pair of analog outputs (L-R) are provided via the integrated audio DACs. The NTSC analog video decoder is supported by its own motion adaptive de-interlacing and 3D comb filtering, including 1080i de-interlacing.
The LSI includes advanced 2D graphics processing. Two transport stream inputs are included. The LSI incorporates a complete MIPS32(r)-based
microprocessor subsystem including caches with bridging to memory and a local bus, where external peripherals can be attached. Integrated peripherals include two USB 2.0, three UARTs, counter/timers and GPIO controllers.
IC8452 (RH-iXC268WJQZQ)
The 64-Mbit page mode flash memory device stores the main CPU program.
Posted By: FRANK at 06:29
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