Troubleshooting & Main Power Supply board Schematic _ SHARP Digital TV receiver TU-R160H / TU-R160HA - TU-R162H / TU-R252H
GENERAL TROUBLESHOOTING
SYMPTOM: Displays “STARTING “and No function.
CAUSE: Software issues.
ACTION: Download the latest software from the TechWeb site and update the operating software in the receiver.
CAUSE: Software issues.
ACTION: Download the latest software from the TechWeb site and update the operating software in the receiver.
To upload the saved firmware to this unit follow these procedures
> Unplug the TUR from the mains supply.
> Connect your PC to the TUR using a straight through serial cable.
> Open HyperTerminal on your PC (Can be found in Accessories, Connectivity).
> Set your COMs port settings to BPS 115200, DB 8, Parity Non, SB 1, FC Non.
> Click Transfer, Send File.
> Select the attached file from the location where you have downloaded it on your PC and change the protocol to 1K Xmodem.
> Click Send, then plug the TUR into the mains.
The firmware should start downloading to the unit, this takes approx: 3 minutes. Once the TUR displays an image, the firmware upload is complete.
Problem
The picture is freezing during live TV or playback recording
The picture is skipping during live TV or playback recording
The picture is blocking (Pixilated) during live TV or playback recording
The channel watching is working, but the PIP or recording I have made is exhibiting the faults mentioned
Solution
There could be many reasons for this fault. Follow the guidelines provided below.
Signal Problem
The first item to check is that you are in an area that receives a Freeview signal.
The Freeview signal cover 97% of the United Kingdom, but there are variations in the channels that you can receive.
Example: If you live in the Manchester area, postcode M40 5BE, you are able to receive the whole family of Freeview channels.
If you live in the Worcestershire area, postcode WR9 8JB, you are able to receive some of the Freeview channels.
The picture is freezing during live TV or playback recording
The picture is skipping during live TV or playback recording
The picture is blocking (Pixilated) during live TV or playback recording
The channel watching is working, but the PIP or recording I have made is exhibiting the faults mentioned
Solution
There could be many reasons for this fault. Follow the guidelines provided below.
Signal Problem
The first item to check is that you are in an area that receives a Freeview signal.
The Freeview signal cover 97% of the United Kingdom, but there are variations in the channels that you can receive.
Example: If you live in the Manchester area, postcode M40 5BE, you are able to receive the whole family of Freeview channels.
If you live in the Worcestershire area, postcode WR9 8JB, you are able to receive some of the Freeview channels.
Check Freeview coverage in you area.
Note: A signal related fault is not a fault with your Sharp DTR.
If you contact the Sharp DTR helpline, we will be unable to deal with your request. Signal related problems should be dealt with by your retailer or via an approved aerial installation company. In most cases, skipping / freezing / blocking is caused by a reception problem - either the signal is too weak or there is some kind of interference.
Example: The first tuner in the Sharp Freeview recorder will receive the signal at the same level quality as your single tuner Freeview box.
The second tuner in the Sharp Freeview recorder will receive the signal at a slight reduction of 0.5dB less than the first tuner.
If you are receiving a borderline signal, this may result in your PIP or recording skipping / freezing / blocking.
For more information and to resolve your problem, talk to your retailer or contact your local aerial installer.
If you contact the Sharp DTR helpline, we will be unable to deal with your request. Signal related problems should be dealt with by your retailer or via an approved aerial installation company. In most cases, skipping / freezing / blocking is caused by a reception problem - either the signal is too weak or there is some kind of interference.
Example: The first tuner in the Sharp Freeview recorder will receive the signal at the same level quality as your single tuner Freeview box.
The second tuner in the Sharp Freeview recorder will receive the signal at a slight reduction of 0.5dB less than the first tuner.
If you are receiving a borderline signal, this may result in your PIP or recording skipping / freezing / blocking.
For more information and to resolve your problem, talk to your retailer or contact your local aerial installer.
In rare cases, skipping / freezing / blocking is caused by a reception problem - the signal is too strong.
Example: If you are living in an area that receives a signal from the Crystal Palace transmitter or if you are positioned very close to the transmitter. For more information and to resolve your problem, talk to your retailer or contact your local aerial installer.The channel watching is working, but the PIP or recording is skipping / freezing / blocking.
Example: Watching BBC1, but my recording from Channel FIVE is skipping / freezing / blocking. This is caused by the variation in signal strength between the different multiplexes.Different channels are located on different multiplexes.
For more information and to resolve your problem, talk to your retailer or contact your local aerial installer.
Hard Disk Malfunction.
On rare occasions the Hard Disk may malfunction, in most cases formatting the Hard Disk will restore normal operation however ALL the data stored on the Hard Disk will be lost.
Ensure you dub important recordings onto Video or DVD before you format the HDD.
* Press the “Menu” button on the remote control.
* Using the cursor arrows on the remote control, select “SETUP”.
* Using the cursor arrows on the remote control, select “RECORDINGS”
* Press OK when the “Format Disk” option is highlighted.
* A menu appears, in which you will be asked for a pin number. If you have not changed the pin number, the factory default is 0000.
* After you enter the pin number, a pop-up menu appears on the screen to ensure that the hard disk should be formatted.
* Select "YES" and press OK to format the Hard Disk. Select "NO" and press OK to cancel.
On rare occasions the Hard Disk may malfunction, in most cases formatting the Hard Disk will restore normal operation however ALL the data stored on the Hard Disk will be lost.
Ensure you dub important recordings onto Video or DVD before you format the HDD.
* Press the “Menu” button on the remote control.
* Using the cursor arrows on the remote control, select “SETUP”.
* Using the cursor arrows on the remote control, select “RECORDINGS”
* Press OK when the “Format Disk” option is highlighted.
* A menu appears, in which you will be asked for a pin number. If you have not changed the pin number, the factory default is 0000.
* After you enter the pin number, a pop-up menu appears on the screen to ensure that the hard disk should be formatted.
* Select "YES" and press OK to format the Hard Disk. Select "NO" and press OK to cancel.
SMPS (Main Power supply regulator board _ Circuit Diagram
PWB by Vestel is used
CLICK ON THE SCHEMATIC TO MAGNIFY