LG 26LN45XX / 26LN4505 (CHASSIS:LC31A / LD31T) Service Manual ▷ View online
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5.3. Component
No.
Specification
Remark
Resolution
H-freq(kHz)
V-freq.(Hz)
Pixel clock(MHz)
1.
720*480
15.730
59.940
13.500
SDTV, DVD 480I(525I)
2.
720*480
15.750
60.000
13.514
SDTV, DVD 480I(525I)
3.
720*576
15.625
50.000
13.500
SDTV, DVD 576I(625I) 50Hz
4.
720*480
31.470
59.940
27.000
SDTV 480P
5.
720*480
31.500
60.000
27.027
SDTV 480P
6.
720*576
31.250
50.000
27.000
SDTV 576P 50Hz
7.
1280*720
44.960
59.940
74.176
HDTV 720P
8.
1280*720
45.000
60.000
74.250
HDTV 720P
9.
1280*720
37.500
50.000
74.250
HDTV 720P 50Hz
10.
1920*1080
33.720
59.940
74.176
HDTV 1080I
11.
1920*1080
33.750
60.000
74.250
HDTV 1080I
12.
1920*1080
28.125
50.000
74.250
HDTV 1080I 50Hz,
13.
1920*1080
56.250
50.000
148.500
HDTV 1080P
14.
1920*1080
67.432
59.940
148.350
HDTV 1080P
15.
1920*1080
67.500
60.000
148.500
HDTV 1080P
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ADJUSTMENT INSTRUCTION
1. Application Range
This document is applied to LC31A / LD31T chassis LED TV
which is manufactured in TV(or Monitor) Factory or is
produced on the basis of this data.
2. Designation
1) The adjustment is according to the order which is
designated and which must be followed, according to the
plan which can be changed only on agreeing.
2) Power adjustment : Free Voltage.
3) Magnetic Field Condition: Nil.
4) Input signal Unit: Product Specification Standard.
5) Reserve after operation: Above 5 Minutes (Heat Run)
Temperature : at 25 °C ± 5 °C
Relative humidity : 65 % ± 10 %
Input voltage : 110-240 V, 50/60 Hz
6) Adjustment equipments: Color Analyzer(CA-210 or CA-110),
DDC Adjustment Jig equipment, Service remote control.
7) Push The "IN STOP KEY" – For memory initialization
3. Main PCB check process
* APC - After Manual-Insult, executing APC
* Boot file Download
1) Execute ISP program “Mstar ISP Utility” and then click
“Config” tab.
2) Set as below, and then click “Auto Detect” and check “OK”
message. If display “Error”, Check connect computer, jig,
and set.
3) Click “Connect” tab. If display “Can’t”, Check connect
computer, jig, and set.
4) Click “Read” tab, and then load download file(XXXX.bin) by
clicking “Read”.
5) Click “Auto” tab and set as below
6) Click “Run”.
7) After downloading, check “OK” message.
*
USB DOWNLOAD(*.epk file download)
1) Make New folder named “LG_DTV” and put ISP file(*.epk)
in the folder.
2) Put the USB Stick to the USB socket.
3) Automatically detecting update file in USB Stick
- If your downloaded program version in USB Stick is Low,
it didn’t work.
- But your downloaded version is High, USB data is
automatically detecting
4) Show the message "Copying files from memory"
5) Updating is starting.
6) Updating Completed, The Multi-vision will restart
automatically.
7) If your TV is turned on, check your updated version and
Tool option. (explain the Tool option, next stage)
* If downloading version is more high than your TV have,
TV can lost all channel data. In this case, you have to
channel recover. if all channel data is cleared, you didn’t
have a DTV/ATV test on production line.
* After downloading, have to adjust TOOL OPTION again.
1. Push "ADJ" key in service remote control.
2. Select "Tool Option 1" and push "OK" key.
3. Punch in the number. (Each model has their number.)
4. Completed selecting Tool option.
Case1 : Software version up
1. After downloading S/W by USB , TV set will reboot
automatically.
2. Push “In-stop” key.
3. Push “Power on” key.
4. Function inspection
5. After function inspection, Push “In-stop” key.
Case2 : Function check at the assembly line
1. When TV set is entering on the assembly line, Push
“In-stop” key at first.
2. Push “Power on” key for turning it on.
→ If you push “Power on” key, TV set will recover
channel information by itself.
3. After function inspection, Push “In-stop” key.
(1)
(3)
(2) OK
Please Check the Speed :
Use the speed under
200KHz.
Use the speed under
200KHz.
(4)
filexxx.bin
(6)
(5)
(7) ……….OK
(5)
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3.1. EDID Process
3.1.1. EDID download
(1) Press "Power only" key of service remote control.
(2) Press the ADJ KEY on R/C and enter EZ ADJUST
(3) Enter EDID D/L mode by pushing "►" key at "11. EDID D/L".
(4) EDID download is executed automatically.
(5) Press EXIT key on service remote control.
<Caution>
- Never connect HDMI & D-sub Cable when download EDID.
- Download HDMI
* Edid data and Model option download (USB)
3.1.2. RGB EDID Data
(1) All models without 29MN33D(Product ID: 22984/HEXA: 59C8)
*(week), **(year), ***(Check sum) : Adjustable Data
: Screen size,
: Color Characteristics
3.1.3. HDMI EDID Data
(1) All models(Product ID: 22986/HEXA:59CA)
*(week), **(year), ***(Check sum) : Adjustable Data
**** (physical address): (HDMI : 10), ****(Check sum): (HDMI : CE)
: Screen size,
: Color Characteristics
3.2. Function Check
3.2.1. Check display and sound
*Check Input and Signal items. (cf. work instructions)
1) TV
2) AV (SCART/CVBS)
3) COMPONENT (480i)
4) RGB(PC : 1366 x 768 @ 60Hz)
5) HDMI(PC : 1366 x 768 @ 60Hz)
6) PC Audio In
* Display and Sound check is executed by Remote control
<Caution> Not to push the INSTOP key after completion if the
function inspection.
3.3. CI+ key writing process. (Device CN)
3.3.1. Communication Port Connection
Connection : PCBA (USB Port) → USB to Serial Adapter
(UC-232A) → RS-232C cable → PC(RS-232C port)
* Caution: LD31Q/LD31A chassis support only UC-232A
driver. (only use this one)
3.3.2. CI+ Key Download
(1) Set CI+ Key path Directory at Start Mac & CI+ Download
Programme.
(2) Set COM 1,2,3,4 / 115200(Baudrate) (1)/(2)
(3) Click port connection button(1)
(4) Start CI+ Key Download, Push the button(4)
(5) Check OK or NG
(6) After completing download, CI + key values are increase
by one automatically. To write CI+ key next SET, click CI+
key writing button(5) directly.
(7) Check whether the key was downloaded or not at ‘In Start’
menu. (Refer to below).
NO
Item
CMD 1 CMD 2 Data 0
Enter download
MODE
Download
‘Mode In’
A
A
0
0 When transfer the ‘Mode
In’, Carry the command.
EDID data and
Model option
download
Download
A
E
00 10 Automatically download
(The use of a internal Data)
EZ ADJUST
0. Tool Option1
1. Tool Option2
2. Tool Option3
3. Tool Option4
4. Tool Option5
5. Tool Option6
6. Country Group
7. Area Option
8. ADC Calibration
9. White Balance
10. 10 Point WB
11. Test Pattern
1. Tool Option2
2. Tool Option3
3. Tool Option4
4. Tool Option5
5. Tool Option6
6. Country Group
7. Area Option
8. ADC Calibration
9. White Balance
10. 10 Point WB
11. Test Pattern
12. EDID D/L
►
14. Touch Sensitivity Setting
15. Ext. Input Adjust
16. SPK Lipsync Adjust
17.SPDIF Lipsync Adjust
15. Ext. Input Adjust
16. SPK Lipsync Adjust
17.SPDIF Lipsync Adjust
EDID D/L
HDMI
OK
RGB
OK
Start
Reset
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=> Check the Download to CI+ Key value in LG set.
(1) Check the method of CI+ Key value
1) Check the method on Instart menu
2) Check the method of RS232C Command
a. Into the main ass’y mode(RS232: aa 00 00)
b. Check the key download for transmitted command
(RS232: ci 00 10)
c. Result value
- Normally status for download : OKx
- Abnormally status for download : NGx
(2) Check the method of CI+ key value(RS232)
1) Into the main ass’y mode(RS232: aa 00 00)
2) Check the mothed of CI+ key by command
(RS232: ci 00 20)
3) Result value
i 01 OK 1d1852d21c1ed5dcx
4. Total Assembly line process
4.1. Tool option & ADC Check
(1) Press "Power on" key of service remote control.
(2) Connect USB Port → USB to Serial Adapter (UC-232A) →
RS-232C cable → PC(RS-232C port)
(3) Check the 'Tool Option'(Refer to the BOM Comments or
Adjustment spec)
(4) Check the ‘ADC’ is ok.
4.2. Model name & Serial number download
4.2.1. Model name & Serial number D/L
1) Press "Power on" key of service remote control.
2) Connect RS232 Signal Cable to RS-232 Jack.
3) Write Model Name & Serial Number by use RS-232.
4) Must check the serial number at the Diagnostics of SET UP
menu. (Refer to below.)
4.2.2. Method & notice
(1) Model Name & Serial Number D/L is using of scan equipment.
(2) Setting of scan equipment operated by Manufacturing
Technology Group.
(3) Serial number D/L must be conformed when it is produced
in production line, because serial number D/L is mandatory
by D-book 4.0.
*Manual Download (Model Name and Serial Number)
If the TV set is downloaded By OTA or Service man,
Sometimes model name or serial number is initialized. (Not
always) There is impossible to download by bar code scan,
so It need Manual download.
1) Press the 'Instart' key of ADJ remote control.
2) Go to the menu '6.Model Number D/L' like below photo.
3) Input the Factory model name(ex 24LN4500) or Serial
number like photo.
4) Check the model name Instart menu → Factory name
displayed (ex 24LN4500)
5) Check the Diagnostics (DTV country only) → Buyer
model displayed (ex 24LN4500)
CMD 1
CMD 2
Data 0
A
A
0
0
CMD 1
CMD 2
Data 0
C
I
1
0
CMD 1
CMD 2
Data 0
A
A
0
0
CMD 1
CMD 2
Data 0
C
I
2
0
CI+ Key Value
Click on the first or last page to see other 26LN45XX / 26LN4505 (CHASSIS:LC31A / LD31T) service manuals if exist.