Sharp LL-171A Service Manual ▷ View online
LL-171A-W/B/LL-171G-W/B
CONNECTION, ADJUSTMENT, OPERATION, AND FUNCTIONS
2 – 12
■
LL-171A SERIES EDID WRITING BOARD
■
LL-171A/G SERIES EDID WRITING BOARD
ġ
DVI-D
connector
RGB
connector
USB
Serial connector
Parallel connector
Board
USB cable
ġ
ġ
ġ
ġ
No necessary to
connect a serial cable.
connect a serial cable.
Connect to the COM2 port
Bar code reader
Connect to the USB
port of the PC
port of the PC
RGB
terminal
Rear part
The directions of the DIP switch of the X1049MP-27
SW1
ȇ
Parallel (EDID)
Serial (PROGRAM)
SW2
ȇ
AUTO
MANUAL
SW3
ȇ
1502A
T1620
SW4
ȇ
1502A
T1620
*
RGB cable is connected at the time of EDID writing.
*
Connect to before program starting.
Connect to the
printer port of PC.
printer port of PC.
USB cable
*
Connect to before program starting.
ġ
ġ
Connect to the COM2 port
ġ
Bar code reader
The directions of the DIP switch of the X1049MP-27
SW1
ȇ
Parallel (EDID)
Serial (PROGRAM)
SW2
ȇ
AUTO
MANUAL
SW3
ȇ
1502A
T1620
SW4
ȇ
1502A
T1620
*
RGB cable is connected at the time of EDID writing.
DVI-D cable is connected at the time of EDID writing.
DVD-I cable
RGB cable
DVI-D
connector
RGB
connector
VGA
terminal
RGB
terminal
USB
Serial connector
Parallel connector
Board
(not necessary for
firmware writing)
firmware writing)
Connect to the USB
port of the PC
port of the PC
No necessary to
connect a serial cable.
connect a serial cable.
Rear part
LL-171A-W/B/LL-171G-W/B
CONNECTION, ADJUSTMENT, OPERATION, AND FUNCTIONS
2 – 13
5. PROCEDURE FOR REPLACING MAIN PWB FOR THE LL-171A/G SERIES
[When replacing the main PWB]
1. REWRITING EDID DATA (RECORD SOGREF VALUE)
If EDID data are different (almost always different whenever the main
board is replaced):
you need to change the model name, serial number and usage time.
1-1. Check Product information before replacing the main PWB.
Record the usage time the LCD has been used.
1-1-1. Turn off the main power supply and then turn it on.
If the LEDs (green, orange) come on, press the [POWER] button to turn
them off.
1-1-2. Hold down the MODE button and press the [POWER] button.
The former model name, serial number and usage time are displayed
as follows:
[Product information]
Record the usage time (150 hours in this case).
1-2. Check SOGREF
If the D-SUB 15 pin analog input signal is the sync-on green, you can set a
threshold value for the input signal.
threshold value for the input signal.
Hold down the [MENU], [MODE], and [
3
] button and press the [POWER] button.
The following screen is displayed.
Record the SOGREF value (1 in this case).
1-3. Rewrite EDID data according to the procedure for writing
IEDID data for LL-171A/G series.
Write the model name and serial number to EDID.
(Example: The model name is rewritten to the LL-171A-B and the serial
number to 3T0003X.)
2. SET [PRODUCT INFORMATION] AFTER LOADING
THE EDID PROGRAM
2-1. Turn off the main power supply and then turn it on.
If the LEDs (green, orange) come, press the [POWER] button to turn
them off.
them off.
2-2. Execute All reset.
Hold down the [MENU] + [MODE] buttons and press the [POWER] button.
All reset is executed and the [ENGLISH] OSD is displayed.
2-3. Read Product information that has been written in EDID
Hold down the [MODE] + [
3
] buttons and press the [POWER] button.
The following screen is displayed.
Press both the [
1
] + [
3
] buttons simultaneously.
The model name and serial number that have been newly written in
EDID are shown.
EDID are shown.
Press the MENU button to read the model name and serial number of EDID.
2-4.
Hold down the MODE button and press the POWER button.
The former model name, serial number and usage time are shown as
follows:
Check the Product information on the above screen before pressing the
[MENU] button to finish the screen.
3. IF THE USAGE TIME IS DIFFERENT FROM THAT
SHOWN BEFORE REPLACEMENT OF THE BOARD.
(almost always different whenever the main board is replaced)
Enter the usage time recorded before replacement (150 hours in this example).
3-1. Correct the usage time in the following manner:
Hold down the [MENU] + [MODE] + [
1
] + [
3
] buttons and press the
[POWER] button.
The following screen is displayed.
Product information
: LL-171A-W
: 3T003219
: 00150
: 3T003219
: 00150
J
Model name
Serial number
Usage time hours
Serial number
Usage time hours
1 [ | - - - - - - - - - ]
SOGREF
MODEL S/N
DISCONNCT ANALOG RGB CABLE
PRESS BOTH [<-] AND [->] KEY
PRESS BOTH [<-] AND [->] KEY
MODEL S/N
DISCONNCT ANALOG RGB CABLE
PRESS BOTH [<-] AND [->] KEY
PRESS BOTH [<-] AND [->] KEY
: LL-171A-B
: 3T00003X
: 00000 h
Product information
Model name
Serial number
Usage time hours
Serial number
Usage time hours
SET/RESET USAGE TIME
LL-171A-W/B/LL-171G-W/B
CONNECTION, ADJUSTMENT, OPERATION, AND FUNCTIONS
2 – 14
3-2. Press the [
1
] + [
3
] buttons simultaneously.
1. Press the [MODE] button and select [X100].
2. Set 1 using the [
3
] button.
3. Press the [MODE] button and select [X10].
4. Set 5 using the [
3
] button.
After making sure the usage time is set for 150 hours, press the
[MENU] button to finish the setting.
3-3.
Hold down the [MODE] button and press the [POWER] button.
The former model name, serial number and usage time are shown as follows:
The former model name, serial number and usage time will be set as above.
After checking the data are correct, press the [MENU] button to finish the setting.
After checking the data are correct, press the [MENU] button to finish the setting.
4. SET THE LANGUAGE DEFAULT VALUE FOR
[JAPANESE].
Hold down the [MENU]+ [
1
] + [
3
] buttons and press the [POWER] button.
The following screen is displayed:
Select ENGLISH using the [
1
] + [
3
] buttons.
After selecting [ENGLISH], press the [MENU] button to finish the setting.
[Check the language setting]
Check the language setting on the version notification screen.
Hold down the [MENU] and [
Hold down the [MENU] and [
3
] buttons and press the [POWER] button.
[171A series model]
[171G series model]
After checking the language setting on the above screen, press the
[MENU] button to finish the setting.
After correcting the model name, serial number and usage time by
changing EDID data, proceed to the next step.
[MENU] button to finish the setting.
After correcting the model name, serial number and usage time by
changing EDID data, proceed to the next step.
5.
CHECK [PRODUCT INFORMATION] AND VERSION
5-1. Turn off the main power supply and then turn it on.
If the LEDs (green, orange) come on, press the [POWER] button to turn them off.
5-2. Hold down the [MODE] button and press the
[POWER] button.
The former model name, serial number and usage time are shown as
follows:
After checking the Product information on the above screen, press the
MENU button to finish the setting.
follows:
After checking the Product information on the above screen, press the
MENU button to finish the setting.
5-3. Check the version
Hold down the MENU and ? buttons and press the [POWER] button.
[171A series model]
[171G series model]
After checking the version number on the above screen, press the
[MENU] button to finish the setting.
[MENU] button to finish the setting.
5-4. Execute All reset
Hold down the [MENU] + [MODE] buttons and press the [POWER] button.
All reset is executed and the [ENGLISH] OSD is displayed.
5-5. Press the soft [POWER] button to turn the screen off.
5-6. Press the AC power supply switch to turn the AC
power supply off.
6. SET SOGREF
If the D-SUB 15 pin analog input signal is the sync-on green, you can set a
threshold value for the input signal.
threshold value for the input signal.
Hold down the [MENU] + [MODE] and [
3
] button and press the [POWER] button.
The following screen is displayed.
Set (1) of SOGREF recorded at step 1-2, using the [
1
] + [
3
] buttons.
After making sure the SOGREF is correctly set on the above screen, press
the [MENU] button to finish the screen.
You can set the SOGREF value within the range from [0] to [9]. The default
value is [1].
the [MENU] button to finish the screen.
You can set the SOGREF value within the range from [0] to [9]. The default
value is [1].
7. IF THE FIRMWARE NEEDS TO BE REWRITTEN:
Rewrite the firmware in the procedure described in [How to use the
LL-171A and LL-171G firmware program writing board].
LL-171A and LL-171G firmware program writing board].
8. WHEN REPLACING LCD PANEL
When replacing the LCD panel with a new one, select [RESET] on the
USAGE TIME setup screen at item 3, using the [
USAGE TIME setup screen at item 3, using the [
3
] button.
The [USAGE TIME] will be set for [00000].
0 [- - - - - - - - - - ]
0 [- - - - - - - - - - ]
1 [- - - - - - - - - - ]
5 [ | | | | | - - - - - ]
0 [- - - - - - - - - - ]
USAGE TIME
MANUAL
RESET
X10000
X1000
X100
X10
X1
: LL-171A-B
: 3T00003X
: 00150 h
: 3T00003X
: 00150 h
Product information
Model name
Serial number
Usage time hours
Serial number
Usage time hours
DEFAULT LANGUEGE
JAPANESE
ENGLISH
MODEL NAME
VERSION
DATE
CHECKSUM
VERSION
DATE
CHECKSUM
V-sync
H-sync
H-sync
: 171AE
: 1.002
: 11/29/2003
: 565B
: 1.002
: 11/29/2003
: 565B
: 60Hz
: 48kHz
: 48kHz
If English is set by default,
[E] is added to the end of the
model name: [171AE].
[E] is added to the end of the
model name: [171AE].
MODEL NAME
VERSION
DATE
CHECKSUM
VERSION
DATE
CHECKSUM
V-sync
H-sync
H-sync
: 171GE
: 1.001
: 12/11/2003
: EA58
: 1.001
: 12/11/2003
: EA58
: 60Hz
: 48kHz
: 48kHz
If English is set by default,
[E] is added to the end of the
model name: [171GE].
[E] is added to the end of the
model name: [171GE].
MODEL NAME : 171AE
VERSION
VERSION
: 1.002
DATE
: 11/29/2003
CHECKSUM
: 565B
V-sync
: 60Hz
H-sync
: 48kHz
If ENGLISH is set by default,
[E] is added to the end of the
model name: [171AE].
[E] is added to the end of the
model name: [171AE].
MODEL NAME : 171GE
VERSION
VERSION
: 1.001
DATE
: 11/29/2003
CHECKSUM
: EA58
V-sync
: 60Hz
H-sync
: 48kHz
If ENGLISH is set by default,
[E] is added to the end of the
model name: [171GE].
[E] is added to the end of the
model name: [171GE].
SOGREF1 [ | - - - - - - - - - ]
LL-171A-W/B/LL-171G-W/B
DISASSEMBLY AND ASSEMBLY
3 – 1
CHAPTER 3. DISASSEMBLY AND ASSEMBLY
1.
REMOVEING DISPLAY UNIT
Remove the four screws
1
and separate the display unit
2
.
2.
REMOVEING REAR COVER
Remove the four screws
1
and separate the display unit
2
.
Caution: They are those of four pawls with a part which are
inserted in mutually to the lower part.
3.
REMOVING MAIN SHIELD
Remove the two screws
1
and separate the main shield
2
.
4.
PEMOVING POWER SUPPLY PWB
Remove the three connectors
1
.
Remove the five screws
2
and separate the power supply PWB
3
.
5.
REMOVING SCALAR PWB AND AUDIO PWB
Remove the three connectors of scalar PWB
1
Remove the six screws
2
and separate the scalar PWB
3
and
audio PWB
4
.
1
2
1
[171G]
1
2
1
[171A]
1
1
2
1
1
1
2
1
1
1
3
2
2
2
1
1
1
3
4
2
2
2
Click on the first or last page to see other LL-171A service manuals if exist.