Sharp LC-50LE751K (serv.man9) Service Manual / Technical Bulletin ▷ View online
LCD 2013 12 06
Date of Issue: 23
rd
December 2013
Classification:
White
LCD TELEVISION TECHNICAL BULLETIN
Page 5 of 8
Sharp Electronics (UK) Limited
Reference
– RG23122013-1
Revision - 1
White
– Carry out as required
Yellow
– Carry out as required and whenever the unit comes in for service
Red
– Carry out on all units
Explanation of RS-232 codes
Code
Code
Detail of Command
KMOD1056
Put’s the main board into “K” mode (Service mode)
KMOD8723
Exit “K” mode (Service mode)
KPSZ0039
Set’s panel size to 39”
KPSZ0050
Set’s panel size to 50”
KPSZ0060
Set’s panel size to 60”
INIT0***
Perform Factory Initialization
MSET0004
Enter White Balance mode
MSET0003
Force White Balance to setting 1
* is a space. RS-232 commands need to have a total of 8 characters.
All letters must be in capital.
Adjustment Advice
Fault condition
– After replacing the main board, the unit is stuck in a yellow “K” mode
(Service mode).
Possible cause
Possible cause
– With the “K” mode on-screen, check the “W” setting. If the digit is 0,
you need to initialize the white balance.
Solution
Solution
– Initialize white balance.
Procedure:
1. Setup serial port (Ensure Baud Rate speed is 115000).
2. Check communication
– Send a wrong code.
Example
– Send “AAA” , TV should returns “ERR”.
3. Type
KMOD1056
(Enter in K mode).
4. Type
MSET0004
(Enter white balance mode).
5. Type
MSET0003
(Change white balance setting to 1).
6. Type
INIT0***
(Perform a factory initialisation).
7. Turn mains AC OFF/ON.
LCD 2013 12 06
Date of Issue: 23
rd
December 2013
Classification:
White
LCD TELEVISION TECHNICAL BULLETIN
Page 6 of 8
Sharp Electronics (UK) Limited
Reference
– RG23122013-1
Revision - 1
White
– Carry out as required
Yellow
– Carry out as required and whenever the unit comes in for service
Red
– Carry out on all units
Adjustment Advice
…cont
Fault condition - No backlight, no picture, blue LED.
Possible cause - Inch size setup has been corrupted.
Solution - Setup inch size
Procedure:
8. Setup serial port (Ensure Baud Rate speed is 115000).
9. Check communication
Possible cause - Inch size setup has been corrupted.
Solution - Setup inch size
Procedure:
8. Setup serial port (Ensure Baud Rate speed is 115000).
9. Check communication
– Send a wrong code.
Example
– Send “AAA” , TV should returns “ERR”.
10. Type
KMOD1056
(enter in K mode).
11. Type
KPSZ00**
(Set panel size. ** = 39, 50 or 60).
12. Turn mains AC OFF/ON.
13. If the TV is switches on properly, then type
13. If the TV is switches on properly, then type
KMOD8723
(exit K mode) or
INIT0***
(Perform a factory initialisation).
Fault condition - No backlight, no picture, blue LED, red LED.
Possible cause - All NVM data has been corrupted.
Solution: Re-write NVM.
Procedure:
1. Setup serial port (Ensure Baud Rate speed is 115000).
2. Check communication
– Send a wrong code.
Example
– Send “AAA” , TV should returns “ERR”.
3. Type
KMOD1056
(enter in K mode).
4.
If TV is 50”, then type
KPSZ0060
5. Turn mains AC OFF/ON.
6. Type
6. Type
KPSZ0050
(When you input the correct settings, all positions in the NVM are
re-written after mains AC off/on).
7. Turn mains AC OFF/ON.
8. If TV is switched on properly, then type
8. If TV is switched on properly, then type
KMOD8723
(exit K mode) or
INIT0***
(Perform a factory initialisation).
LCD 2013 12 06
Date of Issue: 23
rd
December 2013
Classification:
White
LCD TELEVISION TECHNICAL BULLETIN
Page 7 of 8
Sharp Electronics (UK) Limited
Reference
– RG23122013-1
Revision - 1
White
– Carry out as required
Yellow
– Carry out as required and whenever the unit comes in for service
Red
– Carry out on all units
Manually re-write NVM
If you need to manually re-write the NVM, download and extract the NVM files from
the Technical Website.
In the extracted files you will find
If you need to manually re-write the NVM, download and extract the NVM files from
the Technical Website.
In the extracted files you will find
Loewe.EaRom.exe
Procedure:
1. Connect the television to the same network as the PC is connected to and read the
IP address of the television. You can find this information at:
Menu -> SETUP -> Multimedia/Network -> Network settings -> Networking.
Menu -> SETUP -> Multimedia/Network -> Network settings -> Networking.
2. R
ead the line “IP address” and write this IP number in the box “TV” overwriting the
IP that appears where the red arrow is.
LCD 2013 12 06
Date of Issue: 23
rd
December 2013
Classification:
White
LCD TELEVISION TECHNICAL BULLETIN
Page 8 of 8
Sharp Electronics (UK) Limited
Reference
– RG23122013-1
Revision - 1
White
– Carry out as required
Yellow
– Carry out as required and whenever the unit comes in for service
Red
– Carry out on all units
3. To read the NVM master file, use the o
ption “Open…” (File) and select the proper
file according to model / inches in the extracted file.
4. To write the NVM of television
, use the option “Write” (EAROM); wait for a few
seconds, then a message will appear at the bottom side of the screen program
telling that writing has been successful.
telling that writing has been successful.
Notes:
To write NVM of 39”: Write the master NVM file of the 50” and change the inches
from K mode by RS-232 sending the following comand: (
from K mode by RS-232 sending the following comand: (
KPSZ0039
).
You can also change it from service mode: Panel inches -> 3
9”.
The NVM data is the same for LE75x and LE65x, but by default the name in NVM
data is LE75x.
To change the model to LE65x, you should changed by RS-232 sending the
command (
To change the model to LE65x, you should changed by RS-232 sending the
command (
KRCT1
).
Unit does not respond to RS-232 or LAN EEPROM recovery
If the advice provided does not resolve the issue, you will need to investigate the
circuit and determine the component failure.
If the advice provided does not resolve the issue, you will need to investigate the
circuit and determine the component failure.
Display