LG 55EA9800-TA (CHASSIS:EB34D) Service Manual ▷ View online
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ADJUSTMENT INSTRUCTION
1. Application Range
This specification sheet is applied to EB34D Chassis applied
OLED TV all models manufactured in TV factory.
2. Designation
(1) Because this is not a hot chassis, it is not necessary to
use an isolation transformer. However, the use of isolation
transformer will help protect test instrument.
(2) Adjustment must be done in the correct order.
(3) The adjustment must be performed in the circumstance of
25 °C ± 5 °C of temperature and 65 % ± 10 % of relative
humidity if there is no specific designation.
(4) The input voltage of the receiver must keep AC 100-240
V~, 50/60 Hz.
(5) The receiver must be operated for about 5 minutes prior to
the adjustment when module is in the circumstance of over
15 °C.
In case of keeping module is in the circumstance of 0 °C, it
should be placed in the circumstance of above 15 °C for 2
hours.
In case of keeping module is in the circumstance of below
-20 °C, it should be placed in the circumstance of above 15
°C for 3 hours.
[Caution]
When still image is displayed for a period of 20 minutes or
longer (Especially where W/B scale is strong. Digital pattern
13ch and/or Cross hatch pattern 09ch), there can some
afterimage in the black level area.
3. MAIN PCBA Adjustments
3.1. ADC Calibration
- An ADC calibration is not necessary because MAIN SoC
(LGExxxx) is already calibrated from IC Maker
- If it needs to adjust manually, refer to appendix
3.2. MAC Address, ESN, Widevine, HDCP2.0
key download
(1) Equipment & Condition
1) Play file: keydownload.exe
(2) Communication Port connection
1) Key Write: Com 1,2,3,4 and 115200 (Baudrate)
2) Barcode: Com 1,2,3,4 and 9600 (Baudrate)
(3) Download process
1) Select the download items.
2) Mode check: Online Only
3) Check the test process : DETECT → MAC_WRITE →
WIDEVINE_WRITE
4) Play: START
5) Check of result: Ready, Test, OK or NG
6) Printer out (MAC Address Label)
(4) Communication Port connection
1) Connect
: PCBA Jig → RS-232C Port == PC → RS-232C Port
(5) Download
1) AJ/JA/IL models (13Y_H13)
- MAC+ Widevine + ESN + HDCP 2.0
(6) Inspection
- In INSTART menu, check these keys.
3.3. LAN Inspection(Ping Test)
3.3.1. Equipment setting
(1) Play the LAN Port Test PROGRAM.
(2) Input IP set up for an inspection to Test Program.
*IP Number : 12.12.2.2
Connect SET → LAN Port == PC → LAN Port
3.3.2. LAN PORT inspection(PING TEST)
(1) Play the LAN Port Test Program.
(2) Connect each other LAN Port Jack.
(3) Play Test (F9) button and confirm OK Message.
(4) Remove LAN cable.
SET
PC
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3.4. EDID download
3.4.1. Overview
It is a VESA regulation. A PC or a MNT will display an optimal
resolution through information sharing without any necessity
of user input. It is a realization of "Plug and Play".
3.4.2. Equipment
(1) Since embedded EDID data is used, EDID download JIG,
HDMI cable are not need.
(2) Adjustment remote control
3.4.3. Download method
(1) Press Adj. key on the Adjustment remote control
(2) Select EDID D/L menu.
(3) By pressing Enter key, EDID download will begin
(4) If Download is successful, OK is display, but If Download is
failure, NG is displayed.
(5) If Download is failure, Re-try downloads.
Caution) When EDID Download, must remove HDMI Cable.
3.4.4. EDID DATA
# HDMI1 (C/S: E8 71)
EDID Block 0, Bytes 0-127 [00H-7FH]
EDID Block 1, Bytes 128-255 [80H-FFH]
* Checksum (HDMI 1/2/3/4)
4. Final Assembly Adjustment
4.1. White Balance Adjustment
4.1.1. Overview
(1) W/B adj. Objective & How-it-works
1) Objective: To reduce each Panel's W/B deviation
2) How-it-works : When R/G/B gain in the OSD is at 192, it
means the panel is at its Full Dynamic Range. In order
to prevent saturation of Full Dynamic range and data,
one of R/G/B is fixed at 192, and the other two is
lowered to find the desired value.
3) Adjustment condition : normal temperature
①
Surrounding Temperature : 25 °C ± 5 °C
②
Warm-up time: About 5 Min
③
Surrounding Humidity : 20 % ~ 80 %
④
Before White balance adjustment, Keep power on
status, don’t power off
(2) Adj. condition and cautionary items
1) Lighting condition in surrounding area surrounding
lighting should be lower 10 lux. Try to isolate adj. area
into dark surrounding.
2) Probe location: Color Analyzer(CA-210) probe should be
within 10 cm and perpendicular of the module surface
(80°~ 100°)
3) Aging time
①
After Aging Start, Keep the Power ON status during 5
Minutes.
②
In case of LCD, Back-light on should be checked
using no signal or Full-white pattern.
4.1.2. Equipment
(1) Color Analyzer: CA-210 (NCG: CH 9 / WCG: CH 12 / LED:
CH 14 / ALEF: CH 18 / OLED: CH 17)
(2) Adjustment Computer(During auto adj., RS-232C protocol
is needed)
(3) Adjustment Remote control
(4) Video Signal Generator MSPG-925F 720p/204-Gray
(Model: 217, Pattern: 49)
*
Color Analyzer Matrix should be calibrated using CS-1000.
4.1.3. Equipment connection
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0
00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01
10 01 17 01 03 80 A0 5A 78 0A EE 91 A3 54 4C 99 26
20 0F 50 54 A1
20 0F 50 54 A1
8
00 31 40 45 40 61 40 71 40 81 80
30 01 01 01 01 01 01 02 3A 80 18 71 38 2D 40 58 2C
40 45 00 40 84 63 00 00 1E 66 21 50 B0 51 00 1B 30
50 40 70 36 00 40 84 63 00 00 1E 00 00 00 FD 00 3A
60 3E 1E 53 10 00 0A 20 20 20 20 20 20 00 00 00 FC
70 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 XX
40 45 00 40 84 63 00 00 1E 66 21 50 B0 51 00 1B 30
50 40 70 36 00 40 84 63 00 00 1E 00 00 00 FD 00 3A
60 3E 1E 53 10 00 0A 20 20 20 20 20 20 00 00 00 FC
70 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 XX
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0
02 03 3A F1 4E 10 9F 04 13 05 14 03 02 12 20 21
10 22 15 01 29 3D 06 C0 15 07 50 09 57 07 78 03 0C
20 00 10 00 B8 2D 20 C0 0E 01 4F 3F FC 08 10 18 10
30 06 10 16 10 28 10 E3 05 03 01 02 3A 80 18 71 38
40 2D 40 58 2C 45 00 40 84 63 00 00 1E 01 1D 80 18
50 71 1C 16 20 58 2C 25 00 40 84 63 00 00 9E 01 1D
60 00 72 51 D0 1E 20 6E 28 55 00 40 84 63 00 00 1E
70 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 XX
20 00 10 00 B8 2D 20 C0 0E 01 4F 3F FC 08 10 18 10
30 06 10 16 10 28 10 E3 05 03 01 02 3A 80 18 71 38
40 2D 40 58 2C 45 00 40 84 63 00 00 1E 01 1D 80 18
50 71 1C 16 20 58 2C 25 00 40 84 63 00 00 9E 01 1D
60 00 72 51 D0 1E 20 6E 28 55 00 40 84 63 00 00 1E
70 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 XX
Input
FFh (Checksum)
HDMI1
E8
81
HDMI2
E8
71
HDMI3
E8
61
HDMI4
E8
51
Color Analyzer
Computer
Pattern Generator
RS-232C
RS-232C
RS-232C
Probe
Signal Source
* If TV internal pattern is used, not needed
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4.1.4. Adj. Command (Protocol)
▪ RS-232C Command used during auto-adjustment.
▪ Adj. Map
4.1.5. Adjustment method
(1) Auto WB calibration
1) Set TV in ADJ mode using P-ONLY key(or POWER
ONLY key).
2) Place optical probe on the center of the display
- It need to check probe condition of zero calibration
before adjustment
3) Connect RS-232C Cable
4) Select mode in ADJ Program and begin a adjustment.
5) When WB adjustment is completed with OK message,
check adjustment status of pre-set mode(Cool, Medium,
Warm)
6) Remove probe and RS-232C cable.
▪ W/B Adj. must begin as start command “wb 00 00” , and
finish as end command “wb 00 ff”, and Adj. offset if need
(2) LED White balance table
1) Cool Mode
- Purpose : Especially G-gain fix adjust leads to the
luminance enhancement. Adjust the color temperature
to reduce the deviation of the module color temperature.
- Principle : To adjust the white balance without the
saturation, Adjust the G gain more than 172 ( If R gain
or G gain is more than 255 , G gain can adjust less than
172 ) and change the others ( R/B Gain ).
- Adjustment mode : mode - Cool
2) Medium / Warm Mode
- Purpose : Adjust the color temperature to reduce the
deviation of the module color temperature.
- Principle : To adjust the white balance without the
saturation, Fix the one of R/G/B gain to 192 (default
data) and decrease the others.
- Adjustment mode : Two modes - Medium / Warm
4.1.6. Reference (White balance Adj. coordinate and
color temperature)
▪ Luminance : 204 Gray, 80IRE
▪ Standard color coordinate and temperature using CS-1000
(over 26 inch)
▪ Standard color coordinate and temperature using CA-210(CH-14)
4.2. Tool Option setting & Inspection per
countries
4.2.1. Overview
(1) Tool option selection is only done for models in Non-USA
(2) Applied model: LA02D and LA02E Chassis applied to
CANADA and MEXICO
4.2.2. Country Group selection
(1) Press ADJ key on the Adj. R/C, and then select Country
Group Menu
(2) Depending on destination, select KR or US, then on the
lower Country option, select US, CA, MX. Selection is
done using +, - KEY
4.2.3. Tool Option Inspection
(1) Press Adj. key on the Adj. R/C, and then check Tool option.
4.3. Magic Motion remote control Check
4.3.1. Required Instruments
(1) RF-remote control for check, IR-KEY-CODE remote
control.
(2) Check AA battery before test. A recommendation is that a
tester change battery every lots.
4.3.2. Test procedures
(1) Make pairing with TV set by pressing “Start key(Wheel
key)” on RCU.
(2) Check a cursor on screen by pressing "Wheel key" of RCU.
(3) Stop paring with TV set by pressing “Back+ Home” key of
RCU.
RS-232C COMMAND
Explanation
CMD DATA
ID
Wb
00
00
Begin White Balance adj.
Wb
00
ff
End White Balance adj.(internal pattern disappears)
Adj. item
Command
(lower case ASCII)
Data Range
(Hex.)
Default
(Decimal)
CMD1
CMD2
MIN
MAX
Cool
R Gain
j
g
00
C0
G Gain
j
h
00
C0
B Gain
j
i
00
C0
R Cut
G Cut
B Cut
G Cut
B Cut
Medium
R Gain
j
a
00
C0
G Gain
j
b
00
C0
B Gain
j
c
00
C0
R Cut
G Cut
B Cut
G Cut
B Cut
Warm
R Gain
j
d
00
C0
G Gain
j
e
00
C0
B Gain
j
f
00
C0
R Cut
G Cut
G Cut
Mode
Coordinate
Temp
∆uv
x
y
Cool
0.276
0.283
11,000 K
0.0000
Medium
0.285
0.293
9,300 K
0.0000
Warm
0.313
0.329
6,500 K
+0.0030
Mode
Coordinate
Temp
∆uv
x
y
Cool
0.276±0.002
0.283±0.002 11,000 K 0.0000
Medium
0.285±0.002
0.293±0.002
9,300 K
0.0000
Warm
0.313±0.002
0.329±0.002
6,500 K +0.0030
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4.4. WIFI MAC ADDRESS CHECK
a. Using RS232
b. check the menu on in-start
4.5. 3D pattern test(Only for 3D models)
4.5.1. Test equipment
(1) Pattern Generator MSHG-600 or MSPG-6100 (HDMI 1.4
support)
(2) Pattern: HDMI mode (model No. 872, pattern No. 83)
4.5.2. Test method
(1) Input 3D test signal as below.
(2) Press ‘OK” key as a 3D input OSD is shown.
(3) Check pattern as Fig2 without 3D glasses. (3D mode
without 3D glasses)
4.6. EYE-Q function check
(1) Turn on TV.
(2) Press EYE key of Adjustment remote control.
(3) Cover the Eye Q sensor on the front of the set using your
hand and wait for 6 seconds.
(4) Confirm that value is lower than 100 of the “Sensor Data”.
If the value is not lower than 100 after 6 seconds, replace
Eye Q sensor.
(5) Remove3 your hand from the Eye Q sensor and wait 6
seconds.
(6) Confirm that “ok” pop up. If change is not seen, replace
Eye Q sensor
4.7. Speaker Inspection
(1) Input “Check-S" key of adjust remote control to inspect
speaker.
1) When you click the first, the output volume of left &right
main speakers must be 50.
2) When you click the second, the output volume of left
&right main speakers must be 80.
3) When you click the third, the output volume of left &right
main speakers must be 100.
4) When you click the fourth, the output volume of left main
speaker must be 50.
5) When you click the fifth, the output volume of right main
speaker must be 50.
6) When you click the sixth, the output volume of left sub
speaker must be 100.
7) When you click the seventh, the output volume of right
sub speaker must be 100.
8) When you click the eighth, the output volume of all
speakers(left &right main speaker and left &right sub
speaker) must be 30.
Command
Set ACK
Transmission
[A][I][][Set ID][][20][Cr]
[O][K][X] or [NG]
<Fig.1> HDMI Model No.872, Pattern No. 83
<Fig.2> OK in 3D mode without
3D glasses
<Fig.3> NG in 3D mode without
3D glasses
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