Saturday, January 16, 2016

SHARP 3D LED TV - LC-90LE740X Service mode - LED flashing and cusses - Software upgrade - LED television repair and service - Manual Service

Category: LED Television Repair and Service 

Contents of this article 

  • How to access to service mode
  • LED blinking and causes 
  • Software upgrading 


SHARP LC-90LE740

ADJUSTMENT PROCEDURE
Main unit supplied as service unit was adjusted on some item.
However, W/B adj is not finished because it needs to be done by final set condition. So the main unit is in the adjustment condition when it is supplied and K mark is shown up in display when you use it. After finishing Factory setting, K -mark disappear so please do it as following ADJUSTMENT
PROCUDURE.
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.
1. 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: DKEYMF953FMJ6
# When replacing the LCD control PWB, perform the VCOM adjustment.
2. 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 (please use a software version after LEON_LE740X_xxx.USB).
# Monitor microprocessor software (please use a software version after LEONSUBxxx.SMB.)
The main software, 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, 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 supports)
# 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 LEON_LE740X_xxx.USB 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 read
How to upgrade the software
1. Unplug the AC cord.
2. Insert the USB Memory for version upgrade into USB1.
3. Plug in the AC cord with power button pressed down.
4. After 5 seconds, unpress the power button.
5. After the unit startup, the system upgrade screen shows within 20-40 seconds.
6. 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.
7. 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 complet
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 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 LEON_LE740X_xxx.USB and LEONSUBxxx.SMB. (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 into USB1.
3. Plug in the AC cord with power button pressed down.
4. After 5 seconds, unpress 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
NOTE: In the event of a transient failure, upgrade will be automatically retried up to three times. If the process repeatedly fails, hardware may be the cause.
7. 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.
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( DOWN)” keys at a time.
(The “VOL (-)” and “CH ( DOWN )” 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.
Factory setting
Point the cursor to [INDUSTRY INIT], set to “ON” using [+]/[-] of the [VOL] key, and press the [ENT] key.
Confirm the country
The version confirmation screen appears on the green screen. It is completed when [SUCCESS] is displayed at the top.
(If error occurs, [ERROR] is displayed on the red screen.)
Turn off the AC power.
POWER LED FLAHSING AND CAUSES
Item
Slow flashing
Fast flashing
Cause
Inverter/Lamp system failure
Flashes once
Flashes once
Lamp error
Power PWB
failure
(Power failure, etc.)

Flashes twice



Flash once
Power supply error 2 AC_DET error
Flash twice
Power supply error 2  UR+13V error
Flash 3 times
Power supply error 2 D+3.3V error
Flash 5 times
Panel power supply error
Main PWB
failure
(Communication
failure, etc.)
Flashes 3 times



Flashes once
Initial communication error
Flashes twice
Start-up confirmation communication error
Flashes 3 times
Regular communication error
Flashes 5 times
Other communication error
Others
Flashes 4 times
Flashes once
Flashes 3 times
Temperature error
Notification from the main microprocessor