LL-171ME (serv.man3). Complete - Sharp Monitor Service Manual (repair manual). Page 17

LL-171ME

CONNECTION, ADJUSTMENT, OPERATION, AND FUNCTIONS

2 – 10

4) The system asks you to enter the serial number, year and month.

Enter them in the following way.

5) After the above three items are entered, the screen asks you to confirm

the data you entered.  Press Y if there is no mistake and press N if
there is any mistake.
(If N is pressed, the program will terminate without doing anything.) 

6) After writing the above data in U16, enter V171ME. The contents of

data written in U16 are displayed on screen to allow you to check if
data have been correctly written.

*

You can confirm the contents by carrying out step 6) after finish-

ing steps 1) and 2).

*

Supplementary explanation

1.

Precautions concerning writing EDID

1

When writing is executed, "_" appears followed by "Write Start".  If writ-

ing is done correctly, "Write OK" appears on screen and then verifica-
tion begins.  When verification starts, "Verify Start" appears followed by

"_". When writing is finished, "Verify OK" appears on screen.

2

If writing went wrong, ######### WRITE ERROR #############
appears on screen, blinking in red.

If there is the message

[[[[[[[[[[[[[[[[[[[[ Troubleshooting ]]]]]]]]]]]]]]]]]]]]

(1) If the screen is not displayed properly,

showing a lot of garbled characters: This program assumes that it is 

used on MS-DOS incorporating ANSI.SYS.
ANSI.SYS is a standard program supplied with MS-DOS and 

Windows95/98.

If the your operating system does not have ANSI.SYS, add the fol-
lowing line in the CONFIG.SYS file.

DEVICE=C:\WINDOWS\ANSI.SYS

The above path of ANSI.SYS is a standard path for Windows95. 
In the case of MS-DOS, the standard path of ANSI.SYS is 

C:\DOS\ANSI.SYS

Check your operating system and set the correct path.

(2) The screen froze, showing no response.

1.

The tool is turned on, if it needs power supply.

2.

The parallel port is usable and its I/O address is 0378h.

3.

The cable is properly connected.

Note: How to check parallel port setting on Windows

1.

Open System on Control Panel.

2.

Open Device Manager and select the Display type.
(In the case of Windows2000 and XP, select the Hardware tag
and press the Device Manager button.)  

3.

Click the "+" mark at the left of "Port (COM)/LPT)" and check
that there is "Printer Port (LPT1)".
("ECP Printer Port (LPT1)" or the like in the box. )

4.

Open the Properties of Printer Port (LPT1), and then open the
Resource tag.

5.

Check that the setting of "I/O Range" is 0378-037F.

(3) The screen displays no "." or only one ".", showing ERR: Write Error.

Check that the cable is properly connected.

■

Input Serial Number : 3G000220 Enter the serial number.

Input Year

: 2004

If you are not sure about the orig-
inal data, enter the year in which
servicing has been conducted.

Input Week

: 0

If you are not sure about the orig-
inal data, always enter 0.

LL-171ME

Serial Number

: 3G000220

Year

: 2004

Week

: 0

Correct? (Y/N)

:

LL-171ME

Serial Number

: 3G000220

Year

: 2004

Week

: 0

"ERR: Write Error"

in the preceding line of the above write error
message blinking in red, a failure occurred in
the writing process.

"ERR: Verity Error"

 in the preceding line, verification failed.

"ERR: Checksum Error"  in the preceding line, the checksum is wrong.

Connect to
the USB port of the PC

Connect to COM1 port of the PC
(not necessary for EDID writing)

RS-232C

(9-pin D-sub)

cross cable

Connect to the printer port 
of the PC (not necessary
 for firmware writing)

VGA cable

VGA
terminal

SW1: Parallel (EDID)

Serial (PROGRAM) 

SW2: AUTO

MANUAL 

SW3: 1502A

T1620 

SW4: 1502A

T1620 

LL-171ME

Back of a main part 

Board

VGA

connector

DVDVI-D
connector

USB

Serial connector

Parallel connector

USB cable

The directions of the DIP switch of the X1049MP-27
SW1 should be on the Parallel side for EDID writing and
on the Serial side for firmware writing.

Use X1049MP-27.