LG 27MK60TM User manual

P/NO :
CHASSIS :
MODEL :
CAUTION
BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
SERVICE MANUAL
P/NO : MFL62449361 (1804-REV00)
LED LCD MONITOR
SERVICE MANUAL
LM8EA
27MK60TM
CONFIDENTIAL

- 2 - Copyright © 2018 LG Electronics Inc. All rights reserved.
Only training and service purposes
CONTENTS
CONTENTS ........................................................................................................................................................ - 2 -
SAFETY PRECAUTIONS................................................................................................................................... - 3 -
SPECIFICATION ................................................................................................................................................ - 4 -
ADJUSTMENT INSTRUCTION .......................................................................................................................... - 9 -
BLOCK DIAGRAM............................................................................................................................................ - 17 -
EXPLODED VIEW ............................................................................................................................................ - 18 -
DISASSEMBLY ................................................................................................................................................ - 19 -
TROUBLE SHOOTING GUIDE ........................................................................................................................ - 22 -

SAFETY PRECAUTIONS
IMPORTANT SAFETY NOTICE
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by△
！in the
Exploded View.
It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent
Shock, Fire, or other Hazards.
Do not modif
y
the ori
g
inal desi
g
n without
p
ermission of manufacturer.
General Guidance An other abnormality exists that must be corrected before the
receiver is returned to the customer.
An isolation Transformer should always be used during the
servicing of a receiver whose chassis is not isolated from the AC
Leakage Current Hot Check (See below Figure)
power line. Use a transformer of adequate power rating as this
Plug the AC cord directly into the AC outlet.protects the technician from accidents resulting in personal injury
from electrical shocks.
Do not use a line Isolation Transformer during this check.
Connect 1.5 K / 10 watt resistor in parallel with a 0.15 uF capacitorIt will also protect the receiver and it's components from being
between a known good earth ground (Water Pipe, Conduit, etc.)damaged by accidental shorts of the circuitry that may be
and the exposed metallic parts.inadvertently introduced during the service operation.
Measure the AC voltage across the resistor using AC voltmeterIf any fuse (or Fusible Resistor) in this TV receiver is blown,
with 1000 ohms/volt or more sensitivity.replace it with the specified.
Reverse plug the AC cord into the AC outlet and repeat AC voltage
measurements for each exposed metallic part. Any voltageWhen replacing a high wattage resistor (Oxide Metal Film Resistor,
measured must not exceed 0.75 volt RMS which is corresponds toover 1 W), keep the resistor 10 mm away from PCB.
0.5 mA.Keep wires away from high voltage or high temperature parts.
In case any measurement is out of the limits specified, there is
Before returning the receiver to the customer, possibility of shock hazard and the set must be checked and
repaired before it is returned to the customer.
always perform an AC leakage current check on the exposed
metallic parts of the cabinet, such as antennas, terminals, etc., to
Leakage Current Hot Check circuit
be sure the set is safe to operate without damage of electrical
shock.
- 3 - Copyright © 2018 LG Electronics Inc. All rights reserved.
Only training and service purposes
Leakage Current Cold Check(Antenna Cold Check)
With the instrument AC plug removed from AC source, connect an
electrical jumper across the two AC plug prongs. Place the AC
switch in the on position, connect one lead of ohm-meter to the AC
plug prongs tied together and touch other ohm-meter lead in turn to
each exposed metallic parts such as antenna terminals, phone
jacks, etc. When 25A is impressed between Earth and 2nd Ground
If the exposed metallic part has a return path to the chassis, the for 1 second, Resistance must be less than 0.1
*Base on Adjustment standard
measured resistance should be between 1 MΩand 5.2 MΩ.
When the exposed metal has no return path to the chassis the
reading must be infinite.

SPECIFICATION
1. General Specification
** Provided accessory: #7/#8
No Item Content Measurement Result Remark
1 Customer BRAND Checked OK
2 User Model Name 22MK600M/24MK600M/27MK600M Checked OK
3 Sale region Worldwide Checked OK
4 Feature
22MK600 21.5” Wide LCD MNT Checked OK
24MK600 23.8” Wide LCD MNT Checked OK
27MK600 27” Wide LCD MNT Checked OK
5 Chassis Name LM8EA Checked OK
6 General
Scope
External
SW
& Adj. 5-way joystick switch
Checked OK
Function
OSD,DDC2B,DDC2AB, HDCP, Control Lock,
Wide/Original, Smart Energy Saving, Color Weakness,
Black level, Reader mode, Flicker safe
Checked OK
7 Cable
HDMI
Length : 1.5m±0.05m / Shape : Detachable Type / Color :
Black / Weight : 0.091kg± 10%
Checked OK SET accessory
P/N : EAD0092612
5
CABLE : 100Ω±10Ω
CONNECTOR : 100Ω±15Ω
D-sub
Length : 1.5m±0.05m
Shape : Detachable Type / Color : Black / Weight : 0.095kg±
10%
N/A N/A
Do not Support
CABLE : 75Ω±5Ω
CONNECTOR : 50Ω±5Ω
N/A N/A
8 Power Output: DC 19V 1.3A, 24W Adapter
Color: Black, Weight : 154g ±10%, without vinyl bag
Checked OK P/N : Refer to Suffix
standard
9 Applying module list
22MK600M
INX BMS
BLU: EBV60978087/ LM21010041A
Cell: EAJ64589001/ M215HCA-P02
24MK600M
INX BMS
BLU: EBV61158026/ LM23010075A
Cell: EAJ64589201/ M238HCA-P3B
LGD IPS
EAJ64450101/LM238WF2-SSK1
27MK600M
LGD IPS
EAJ62507601/ LM270WF7-SSA1
Checked OK
Refer to Suffix
standard
- 4 - Copyright © 2018 LG Electronics Inc. All rights reserved.
Only training and service purposes

- 5 - Copyright © 2018 LG Electronics Inc. All rights reserved.
Only training and service purposes
6. Signal Timing (Resolution)
[22/24/27” – FHD]
<Analog>
1) Main Recommended Timing
Mode section polarity
DOT
CLOCK
[MHz]
Frequency
[kHz]/[Hz]
Total
Period
(E)
Display
(A)
Front
Porch
(D)
Sync.
(C)
Back
Porch
(B)
Measurement Result Resolution
1 H(Pixels) -
28.321
31.468 900 720 18 108 54 Checked OK
720 X 400
V(Lines) + 70.08 449 400 12 2 35 Checked OK
2 H(Pixels) -
25.175
31.469 800 640 16 96 48 Checked OK
640 x 480
V(Lines) - 59.94 525 480 10 2 33 Checked OK
3 H(Pixels) -
31.5
37.5 840 640 16 64 120 Checked OK
640 x 480
V(Lines) - 75 500 480 1 3 16 Checked OK
4 H(Pixels) +
40.0
37.879 1056 800 40 128 88 Checked OK
800 x 600
V(Lines) + 60.317 628 600 1 4 23 Checked OK
5 H(Pixels) +
49.5
46.875 1056 800 16 80 160 Checked OK
800 x 600
V(Lines) + 75.0 625 600 1 3 21 Checked OK
6 H(Pixels) -
65.0
48.363 1344 1024 24 136 160 Checked OK
1024 x 768
V(Lines) - 60.0 806 768 3 6 29 Checked OK
7 H(Pixels) +
78.75
60.023 1312 1024 16 96 176 Checked OK
1024 x 768
V(Lines) + 75.029 800 768 1 3 28 Checked OK
8 H(Pixels) +
108.0
67.500 1600 1152 64 128 256 Checked OK
1152 x 864
V(Lines) + 75.000 900 864 1 3 32 Checked OK
9 H(Pixels) +
108.0
63.981 1688 1280 48 112 248 Checked OK
1280 x 1024
V(Lines) + 60.023 1066 1024 1 3 38 Checked OK
10 H(Pixels) +
135.0
79.976 1688 1280 16 144 248 Checked OK
1280 x 1024
V(Lines) + 75.035 1066 1024 1 3 38 Checked OK
11 H(Pixels) -
146.25
65.290 2240 1680 104 176 280 Checked OK
1680 x 1050
V(Lines) + 59.954 1089 1050 3 6 30 Checked OK
12 H(Pixels) +
148.50
67.50 2200 1920 88 44 148 Checked OK
1920 x 1080
V(Lines) + 60 1125 1080 4 5 36 Checked OK

- 6 - Copyright © 2018 LG Electronics Inc. All rights reserved.
Only training and service purposes
< HDMI>
1) Main Recommended Timing
Mode section polarity DOT CLOCK
[MHz]
Frequency
[kHz]/[Hz]
Total
Period(E)
Display
(A)
Front
Porch(D)
Sync.
(C)
Back
Porch(B) Measurement Result Resolution
1 H(Pixels) -
28.321
31.468 900 720 18 108 54 Checked OK
720 X 400
V(Lines) + 70.08 449 400 12 2 35 Checked OK
2 H(Pixels) -
25.175
31.469 800 640 16 96 48 Checked OK
640 x 480
V(Lines) - 59.94 525 480 10 2 33 Checked OK
3 H(Pixels) -
31.5
37.5 840 640 16 64 120 Checked OK
640 x 480
V(Lines) - 75 500 480 1 3 16 Checked OK
4 H(Pixels) +
40.0
37.879 1056 800 40 128 88 Checked OK
800 x 600
V(Lines) + 60.317 628 600 1 4 23 Checked OK
5 H(Pixels) +
49.5
46.875 1056 800 16 80 160 Checked OK
800 x 600
V(Lines) + 75.0 625 600 1 3 21 Checked OK
6 H(Pixels) -
65.0
48.363 1344 1024 24 136 160 Checked OK
1024 x 768
V(Lines) - 60.0 806 768 3 6 29 Checked OK
7 H(Pixels) +
78.75
60.023 1312 1024 16 96 176 Checked OK
1024 x 768
V(Lines) + 75.029 800 768 1 3 28 Checked OK
8 H(Pixels) +
108.0
67.500 1600 1152 64 128 256 Checked OK
1152 x 864
V(Lines) + 75.000 900 864 1 3 32 Checked OK
9 H(Pixels) +
108.0
63.981 1688 1280 48 112 248 Checked OK
1280 x 1024
V(Lines) + 60.023 1066 1024 1 3 38 Checked OK
10 H(Pixels) +
135.0
79.976 1688 1280 16 144 248 Checked OK
1280 x 1024
V(Lines) + 75.035 1066 1024 1 3 38 Checked OK
11 H(Pixels) -
146.25
65.290 2240 1680 104 176 280 Checked OK
1680 x 1050
V(Lines) + 59.954 1089 1050 3 6 30 Checked OK
12 H(Pixels) +
148.50
67.50 2200 1920 88 44 148 Checked OK
1920 x 1080
V(Lines) + 60 1125 1080 4 5 36 Checked OK
13
H(Pixels) +
174.5
83.89 2080 1920 48 32 80 Checked OK
1920 x 1080
V(Lines) + 74.97 1119 1080 3 5 31 Checked OK
6.1.2 HDMI Video input
Factory support mode
(Preset Mode)
Horizontal
frequency
(KHz)
Vertical
frequency
(Hz)
HDMI
1 480P 31.5 60 O
2 576P 31.25 50 O
3 720P 37.5 50 O
4 720P 45 60 O
5 1080P 56.25 50 O
6 1080P 67.5 60 O
(Recommend Mode)

10. LCD Panel Characteristic
-. 22MK600*** (M215HCA-P02)
No Item Content Remark
1 LCD Module
Feature
Maker INX
Type AAS
Active Display Area 21.5 inches(546.10mm) (Aspect ratio 16:9)
Pixel Pitch [mm] 0.24795 [mm]X RGB X 0.24795 [mm]
Electrical Interface LVDS
Color Depth 16.7M colors
Size (Outline) [mm] 484.260(H) x 279.486(V) x 2.2(D) mm
Surface Treatment AG type, 3H hard coating, Haze 25
Operating Mode Transmissive mode, normally black
Back light Unit White LED
-. 24MK600 (M238HCA-P3B)
No Item Content Remark
1 LCD Module
Feature
Maker INX
Type AAS
Active Display Area 23.8 inches(604.70mm) (Aspect ratio 16:9)
Pixel Pitch [mm] 0.2745 [mm]X RGB X 0.2745 [mm]
Electrical Interface LVDS 2port
Color Depth 16.7M colors (6bit + A-FRC)
Size (Outline) [mm] 534.44(H)x306.46(V)x2.2(D)mm (Typ.)
Surface Treatment High resolution adaptable AG,
3H hard coating, Haze : 25%
Operating Mode Transmissive mode, normally black
Back light Unit White LED
-. 24MK600(LGD LM238WF2-SSK1)
No Item Content Remark
1 LCD Module
Feature
Maker LGD
Type IPS
Active Display Area 23.8 inches(60.47cm) (Aspect ratio 16:9)
Pixel Pitch [mm] 0.2745 [mm] X 0.2745 [mm]
Electrical Interface Dual Channel LVDS
Color Depth 16.7M colors (RGB 6-bits + A-FRC)
Size (Outline) [mm] 535.0(H)x313.0(V)x12.2(D)mm (Typ.)
Surface Treatment Anti-Glare, 3H
Operating Mode Transmissive mode, Normally Black
Back light Unit White LED
Color Gamut NTSC 72%
- 7 - Copyright © 2018 LG Electronics Inc. All rights reserved.
Only training and service purposes

-. 27MK600 (LGD LM270WF7-SSA1)
No Item Content Remark
1 LCD Module
Feature
Maker LGD
Type IPS
Active Display Area 27 inches(68.6cm) (Aspect ratio 16:9)
Pixel Pitch [mm] 0.3114 [mm]X RGB X 0.3114 [mm]
Electrical Interface Dual Channel LVDS
Color Depth 16.7M colors (RGB 8-bits + Hi-FRC)
Size (Outline) [mm] 607.1(H)x354.1(V)x12.7(D)mm (Typ.)
Surface Treatment Anti-Glare, 3H
Operating Mode Transmissive mode, Normally Black
Back light Unit White LED
Color Gamut NTSC 72%
Standard Measurement Condition
zAmbient Luminance Level : dark ( < 10 lux)
zAmbient Temperature : Normal Temperature(10 ~ 25 ℃)
zwarm-up Time : More than 30min (at Full White Pattern)
zInput Signal : 1920x1080@240Hz
zContrast : 70 / Brightness : Max. 100
z6500K : Color Temperature Setting is 6500 K( if it’s not special specification)
zAnother Spec.: Product Specification Standard( LG(55)G1-1034 )
zCosmetic Spec. : LCD Module IIS Spec.
- 8 - Copyright © 2018 LG Electronics Inc. All rights reserved.
Only training and service purposes

ADJUSTMENT INSTRUCTION
1. Application
1.1 This document is applied to LM8EA chassis 22/24/27MK600M LCD Monitor which is manufactured in Monitor Factory
or is produced on the basis of this data.
1.2 Manufacturing Type: SET
2. Designation
2.1 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.
2.2. Power Adjustment: Free Voltage
2.3. Magnetic Field Condition: Nil.
2.4. Input signal Unit: Product Specification Standard
2.5. Reserve after operation: Above 5 Minutes (Heat Run)
Temperature : at 25℃±5°C / Relative humidity: 65 ±10% / Input voltage: 100 ~ 240V, 50/60Hz
2.6. Adjustment equipments: Color Analyzer (CA-210 or CA-110, UA-10), DDC Adjustment Jig equipment,
3. Main PCB check process
* APC - After Manual-Insult, executing APC
3.1 ADC Process
XxMK600M model use internal ADC, no need connect D-SUB cable
Internal ADC steps as below
On AC power on with Aging mode, checking the ADC values and then decide to do or not,
•Read ADC OFFSET and GAIN flags from 0xA8 0x0D, 0x0E on NVRAM
•If those values are not 0xAA on Aging mode, must do internal ADC calibration.
•If the result of internal ADC calibration is OK, save the ADC result and make the OFFSET and
GAIN flags to 0xAA and make the Internal_ADC flag to INTERNAL.
•Display the result of ADC on Aging Mode OSD and Service OSD
If don’t use internal ADC, please follow below step
Input 16 step pattern for ADC (Mode12, pattern 11). (Video level : 700 mVp-p)
Adjust by commanding AUTO_COLOR_ADJUST
Confirm “Success” message in Screen or Check the data of 0XFD, 0XFE address of
EEPROM(0XA6) is 0xAA after waiting 5 seconds
If there is “FAULT” message or the data of 0XFD, 0XFE address of EEPROM(0xA6) is not 0xAA,
do adjust again
If all Adjustment is completed, the values of 6500K, User Color and 9300K are saved automatically.
3.2 Main PCB Function test
- 9 - Copyright © 2018 LG Electronics Inc. All rights reserved.
Only training and service purposes

- Check display/audio according to interface
3.2.5.9 V-ComAdjustment
*INX panel biz need adjusting V-COM by software
Definition: adjusting V-Com level thereby show minimum flicker
Process: By LG cmd , Check Flicker Level and If Can’t meet Flicker spec,
Adjust V-com value through IIC line of panel. If flicker level meet spec, save V-com value at
EEPROM.
Connection Diagram
The type of Probe must be CA-P12/15 or CA-P15
V-com adjustment Spec
22MK600M/24MK600M***GESN
Flicker level ≤25
3.3 Confirm PRESET 6500K Color coordinates and Adjust PRESET 9300K Color coordinates .
* Set as Aging mode ON, by commanding AGING_ON/OFF command code.
* Select Module that is being used in present production by commanding MODULE SELECT.
* Send SYSTEM RESET command to set Module data.
* Input Full White Pattern (Video level : 700 mVp-p)
* 9300K color adjustment
This Model is Non-TCO Appliance
If this TCO 03 spec should be satisfied later, refer to below method.
Adjust to meet x = 0.287±0.005, y=0.303±0.005 in 5 minutes.
x= 0.285±0.005, y= 0.301±0.005 in 5~30 minutes.
x=0.283±0.005, y=0.298±0.005 over than 30minutes, and confirm.
Adjust to meet Y = over 140cd and confirm
* Input Full White Pattern (Video level : 700 mVp-p)
* Set as 6500K by commanding COLOR_MODE_CHANGE Command code.
* 6500K color adjustment
If this TCO 03 spec should be satisfied later, refer to below method.
Adjust to meet x = 0.317 ± 0.005, y=0.332±0.005 in 5 minutes.
- 10 - Copyright © 2018 LG Electronics Inc. All rights reserved.
Only training and service purposes

x= 0.315 ± 0.005 , y= 0.331±0.005 in 5~30 minutes.
x=0.313 ± 0.005, y=0.329±0.005 over than 30minutes, and confirm.
(Option) It’s another method for 6500K color adjustment at Gumi & NT
At first, check ∆UV. If that is under 0.0065, the set is not adjusted.
If not. It is adjust to meet u’= 0.198±0.0065, v’=0.469±0.0065
Adjust to meet Y = over 180 cd and confirm.
* Input Full White Pattern (Video level : 700 mVp-p)
* Set as 6500K by commanding COLOR_MODE_CHANGE Command code.
* 6500K color adjustment
* Input Gamma calibration Pattern (R,G,B, Grey 20 )
This model must be calibrated Gamma2.2
Gammacalibrationandverify
If this TCO 0.3 spec should be satisfied later, refer to below method.
.
(Option) It’s another method for 6500K color adjustment at Gumi & NT
At first, check ∆UV. If that is under 0.0065, the set is not adjusted.
If not. It is adjust to meet u’= 0.198±0.0065, v’=0.469±0.0065
Adjust to meet Y = over 200 cd and confirm.
If this TCO 0.6 spec should be satisfied later, refer to below method.
2min 5min 10min 20min 30min
X 0.316 0.315 0.313 0.313 0.313
Y 0.334 0.333 0.329 0.329 0.329
Adjust to meet Y = over 200 cd and confirm.
3.2.4.5. Confirm User color coordinates .
* Confirm Whether User color is saved same as 6500K.
* After confirming Color coordinates, Must return to 6500K
* Confirm whether user color is 50. If the value of user color(R/G/B) is 30, do adjust again by
4. Total Assembly line process
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Only training and service purposes

4.1 Write HDCP 1.4
-. HDCP 1.4 KEY
a. HDCP 1.4 KEY is included in Scaler. Don’t need write HDCP 1.4 key.
4.2 White balance check and Factory calibration
-. Before the factory calibration, check the White balance according to below specification.
HDMI 1920x1080, Full White
Tolerance : -/+0.015 / Luminance Spec(min) : 200(22/24”/27”)
Check condition : custom mode(out-going condition)
Aging Time [min] x y
2 0.319 0.339
4 0.318 0.338
8 0.318 0.337
10 0.317 0.336
25 0.316 0.333
40 0.315 0.331
255 0.313 0.329
a. Factory Calibration(2.2) : dE, Color Temperature(6500k)
- Reference Model: 24MP68VQ
*Note: Manual W/B process
1) When in DC OFF Condition
2) Press power button 3 times to left direction.
3) Press power button once to right direction.
4) DC on
5) Press power button up to show Navigation OSD.
6) Press power button left to show Service Menu. (Select “Menu” in Navigation OSD)
※When doing Adjustment, Please make circumstance as below.
- 12 - Copyright © 2018 LG Electronics Inc. All rights reserved.
Only training and service purposes

4.3 DPM Operation check
■Measurement Condition: 100~240V@ 50/60Hz
1) Set Input to D-Sub, HDMI
2) Turn off the source device.
3) Check DPM operation refer to the below table.
Operating Condition Sync (H/V)
or Video
EUT
(MSPG6100) LED(SET) Wattage(W)
Sleep mode Off/Off Off Off 0.3W
Off mode - - Off
0.3W DC Switch Off
5. Shipping condition
ÆMake sure to do FACTORY RESET at the final process.
No. Item Content& Outgoing Condition 비고
2 Outgoing Condition Quick Settings Brightness 100
Contrast 70
Volume 30
Input Input List HDMI1
Aspect Ratio Full wide
Picture Picture Mode Custom
Picture Adjust Brightness 100
Contrast 70
Sharpness 50
Super Resolution+ Off
Black Level Depending on input signal
(RGB: High)
(YUV: Low)
DFC Off
Game Adjust Response Time Fast
FreeSync Off
Black Stabilizer 50
Cross Hair Off
Color Adjust Gamma Mode 2
Color Temp Custom
Red 50
Green 50
Blue 50
Configuration Adjust Horizontal 50
Vertical 50
Clock 50
Phase 50
Resolution Off
Picture Reset No
General Language Depend on the sale region
Smart Energy Saving Low
Power LED Off
Automatic Standby Off(EU/EK/PD/EW/MA,4H)
OSD Lock Off
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Only training and service purposes

Information 1. 모델명
2. 사용시간
3. 시리얼 No.
Reset No
6. Signal composition for adjustment
6.1 I2C (100K BPS)
6.2 COMMUNICATION START
START 6E A STOP 50Ms
#Until ACK BIT goes LOW, Repeat it.
6.3 Command form.
Command form use DDC2AB standard communication protocol.
START 6E A 50 A LEN A 03 A CMD A 00 A VAL A CS A STOP
a. LEN : DATA BYTE number to send.
b. CMD : Command language that monitor executes.
c.VAL: FOSDATA
d. CS : Dada’s CHECHSUM that transmit
e.DELAY:50MS
f. A : Acknowledge
6.4 Screen adjust command (LENGTH = 84)
No. Adjustment contents CMD(hex) ADR VAL(hex) Explanation
1 EEPROM ALL INITIAL E4 00 00 adjustment Initialization
2 EEPROM READ E7 Slave
add
At EEPROM Read
3 EEPROM WRITE E8 Slave
add
Data Write data at EEPROM
4 R GAIN 16 00 00-64
Tune Gain
5 G GAIN 18 00 00-64
6 B GAIN 1A 00 00-64
7 BRIGHT(Backlight) 10 00 00-64 Tune Analog Bright
8 FACTORY RESET F0 00 00 Factory reset
9 AUTO_COLOR_ADJUST F1 00 0 AUTO COLOR Tuning
0:Auto color
10 COLOR_MODE_CHANGE F2 00 01 6500K
02 9300K
11 Elapsed time Clear E9 00 00 Aging off &Clear elapsed time
12 Aging On/Off F3 00 FF/00 FF:ON / 00:OFF
13 Input Select F4 00
0xD0
0x90
0x91
1:D-sub
2:HDMI1
3:HDMI2
14 SYSTEM RESET F5 00 00 Restart System
15 Module Select
(Page 0xA6 : 0xF3) F6 00
0x45 22MK600M:M215HCAP02
0x2F 24MK600M**GESN:M238HCAP3B
0x09 27MK600:LM270WF7
0x55 24MK600**KNSN:LM238WF2
16 Model select
(Page 0xA6 : 0xF0) F9 00 00 MK600M
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Only training and service purposes

17 Select Language 68 00
0x00 ~
0x0F
00:English,
01: German
02: French
03: Spanish
04: Italian
05: Swedish,
06:Finnish
07: Portuguese
08: Brazil
09: Polish
0A: Russian
0B: Greek
0C: Ukrainian
0D: Chinese
0E: Traditional Chinese
0F: Japanese
10: Korean
11: Hindi
18 EDID SN UPDATE 0x77 0 0x01~0x02 0x01 : HDMI1
0x02 : HDMI2
19 APD command 0XF7 00 0X00/
0X01
0X00: OFF
0X01: ON
20 APD check addrss & vaule A6 0xFE OFF : 0x00
ON : 0x11
APD: Auto Power Down, OSD 菜单中对应“Automatic standby”
-Apply standard: EU region HDMI model
-EU region Suffix: EU / EK / PD / EW/MA
6.5. EEPROM Data Write
6.5.1 Siganl TABLE
- 15 - Copyright © 2018 LG Electronics Inc. All rights reserved.
Only training and service purposes
LEN : 84h+Bytes
STOP
A
A
A
A
A
A
Data n
...
A
Data 1
A
CS
START
84
+
n
ADH
CMD
03
6E
50
A
A
ADL
Dela
y
20m
CMD : E8h
ADH : E2PROM Slave Address(A0,A2,A4,A6,A8,AA,AC,AE), Not 00h(Reserved by Buffer To EEPROM)
ADL : E2PROM Sub Address(00~FF)
Data : Write data
Delay : 20ms
6.5.2. Command Set
No. Adjustment contents CMD(hex) LEN Explanation
1 EEPROM WRITE E8 94 16-Byte Write
2 (84+n) n-byte Write
*Use
FOS Default write :
<14mode data> write
SyncFlags,HPeriodH, HPeriodL, VtotalH,VtotalL, SrcHTotalH, SrcHTotalL
SrcHStartH, SrcHStartL, SrcVStartH,SrcVStartL, HsyncPhase
Temporary Data write: Write to particular address of EEPROM.

6.6 E2PROM Data Read
6.6.1 Signal TABLE
STOP
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Only training and service purposes
START
6E
A
50
A
84
A
03
A
CMD
A
ADH
A
ADL
A
CS
A
Delay 150ms
STOP
----------------------------------------------------------------------
START
6F
A
D1
A
Dn
A
128 Bytes
6.6.2 COMMAND SET
No. Adjustment contents CMD(hex
)
ADH(hex) ADL(hex) Explanation
1 EEPROM READ E7 A0 0 0-Page 0~7F Read
2 80 0-Page 80~FF Read
3 A2 0 1-Page 0~7F Read
4 80 1-Page 80~FF Read
5 A4 0 2-Page 0~7F Read
6 80 2-Page 80~FF Read
7 A6 0 3-Page 0~7F Read
8 80 3-Page 80~FF Read
9 A8 0 4-Page 0~7F Read
10 80 4-Page 80~FF Read
11 AA 0 5-Page 0~7F Read
12 80 5-Page 80~FF Read
13 AC 0 6-Page 0~7F Read
14 80 6-Page 80~FF Read
15 AE 0 7-Page 0~7F Read
16 80 7-Page 80~FF Read
6.6.3 Use
Read E2PROM’s specific area as unit of 128(80h)-byte. ( 84h )
6.6.4 EDID Write
EEPROM access by using DDC2B protocol
1-Byte write
START A
0
A L D
STOP
A A
L : 0x00~0x7F
D: data
8-byte write
START A0 A L A Data A …. A A
Data8
STOP
L : 0x00,0x10,….0x70
6.6.5 EDID Read
DDC2B Command.(A0/A1)
START A
0
A
00
START A1 A D
ata
1
.
.
.
D
ata
12
8
A
CS
A
STOP
- 128 Byte transfer of EDID Buffer of MICOM

BLOCK DIAGRAM
LVDS
SCALER
RTD2522R
Panel(1920x1080)
FLASH
8M
SPI
ControlKey
Key 1 & Key 2
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Only training and service purposes
MP2122A
DC/DC
3.3V 1.1V
MP3378E
LEDDriver
LED Back light Pow
5V
er
Headphone
OUT
HDMI#1
RGB HDMI#2

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Only training and service purposes
EXPLODED VIEW
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts
are identified by in the EXPLODED VIEW.
It is essential that these special safety parts should be replaced with the same components as recommended
in this manual to prevent Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
IMPORTANT SAFETY NOTICE
540
or
200
300
510 500
520
330
400
910
900
920
930

DISASSEMBLY
Disassembly method
3. Disassembly the Stand-base.
1. Put a product on a pad.
4. Disassembly the Screw cover.
- 19 -
Copyright © 2018 LG Electronics Inc. All rights reserved.
Only training and service purposes
2. Use a screw-driver to disassembly the Stand-base
screw (1ea) or disassembly the thumb-screw(1ea)
with your hands.
5. Disassembly the Stand-body screw. (2ea)

6. Disassembly the Stand-body.
7. Disassembly the Jack-screw. (1ea)
8. Use a jig to disassembly the Back cover.
9. Disassembly the Cables.
10. Disassembly the UDM Screw. (all)
11. Disassembly the Middle-cabinet.
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Only training and service purposes