LG 34UC79G User manual

Internal Use Only
P/NO :
CHASSIS :
MODEL :
CAUTION
BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
SERVICE MANUAL
P/NO : MFL68920199 (1608-REV00)
LED MONITOR
SERVICE MANUAL
LM61B
34UC79G 34UC79G-BG

- 2 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
CONTENTS .............................................................................................. 2
SAFETY PRECAUTIONS ........................................................................ 3
SPECIFICATION ....................................................................................... 4
ADJUSTMENT INSTRUCTION ............................................................... 7
TROUBLESHOOTING GUIDE ............................................................... 10
BLOCK DIAGRAM ................................................................................. 11
EXPLODED VIEW .................................................................................. 12
DISASSEMBLY ...................................................................................... 13
SCHEMATIC CIRCUIT DIAGRAM ........................................... APPENDIX
CONTENTS

- 3 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the
Schematic Diagram and 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.
General Guidance
An isolation Transformer should always be used during the
servicing of a receiver whose chassis is not isolated from the AC
power line. Use a transformer of adequate power rating as this
protects the technician from accidents resulting in personal injury
from electrical shocks.
It will also protect the receiver and it's components from being
damaged by accidental shorts of the circuitry that may be
inadvertently introduced during the service operation.
If any fuse (or Fusible Resistor) in this TV receiver is blown,
replace it with the specified.
When replacing a high wattage resistor (Oxide Metal Film Resistor,
over 1 W), keep the resistor 10 mm away from PCB.
Keep wires away from high voltage or high temperature parts.
Before returning the receiver to the customer,
always perform an AC leakage current check on the exposed
metallic parts of the cabinet, such as antennas, terminals, etc., to
be sure the set is safe to operate without damage of electrical
shock.
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.
If the exposed metallic part has a return path to the chassis, the
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.
An other abnormality exists that must be corrected before the
receiver is returned to the customer.
Leakage Current Hot Check (See below Figure)
Plug the AC cord directly into the AC outlet.
Do not use a line Isolation Transformer during this check.
Connect 1.5 K / 10 watt resistor in parallel with a 0.15 uF capacitor
between a known good earth ground (Water Pipe, Conduit, etc.)
and the exposed metallic parts.
Measure the AC voltage across the resistor using AC voltmeter
with 1000 ohms/volt or more sensitivity.
Reverse plug the AC cord into the AC outlet and repeat AC voltage
measurements for each exposed metallic part. Any voltage
measured must not exceed 0.75 volt RMS which is corresponds to
0.5 mA.
In case any measurement is out of the limits specified, there is
possibility of shock hazard and the set must be checked and
repaired before it is returned to the customer.
Leakage Current Hot Check circuit
IMPORTANT SAFETY NOTICE
To Instrument's
exposed
METALLIC PARTS
Good Earth Ground
such as WATER PIPE,
CONDUIT etc.
AC Volt-meter
SAFETY PRECAUTIONS

- 4 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
SPECIFICATION
NOTE : Specications and others are subject to change without notice for improvement.
1. General Specication
Item Content Remark
1 Customer BRAND
2 User Model Name 34UC79G
3 Sale region World Wide
4 Feature 34” Wide Curved LCD MONITOR(WFHD)
5 Chassis Name LM61B
6 General Scope External SW &Adj. 5-way joystick switch
Function PBP, Picture Mode Ratio, Gamma Calibration, SES, Six
Color, 10W speaker x 2, Type-C, DisplayPort, HDMI x 2,
USB hub(USB3.0 x 2), Screen split
7 Power Code Length : 1.55±0.05M, Shape : Wall-out
Color : White, Weight : 0.17kg ±10%
Refer to Sufx standard
and power cord table
8 Input HDMI1/2 IN HDMI 1 and HDMI 2
DP IN Display Port
USB Type-C None
USB UP USB Up-stream
USB 1/2 USB downstream(only with Host PC)
Quick Charge(USB 1/2)
H/P Audio L/R
LINE-OUT Speaker Line-out
9 Cable USB Type-C Length : 1.0±0.05 M
Shape : Detachable Type
Color: White Pin : 24P
Weight : 0.48kg±10%,
Displayport Length : 1.5±0.05 M
Shape : Detachable Type
Color : White
Weight : 0.10kg±10%
HDMI Length : 1.5±0.05 M
Shape : Detachable Type
Color : White
Weight : 0.09kg±10%,
9 Power Input: AC90~264V 47~63Hz
Output: DC 19V 3.42A, 65W Adapter
Color : Black, Weight : 0.289kg±10%

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Only for training and service purposes
2. Signal Timing (Resolution)
2.1. Signal (Video & Sync)
2.2. H/V Timing
No. Section Pol. Dot Clock
[MHz]
Frequen-
cy
[kHz]/[Hz]
Total
Cycle
(E)
Dis-
play
(A)
Front
Porch(B)
Sync.
(D)
Back
Porch(F)
Resolution
1 H(Pixels) - 25.175 31.469 800 640 16 96 48 640 x 480
V(Lines) - 59.94 525 480 10 2 33
2 H(Pixels) + 40 37.879 1056 800 40 128 88 800 x 600
V(Lines) + 60.317 628 600 1 4 23
3 H(Pixels) - 65 48.363 1344 1024 24 136 160 1024 x 768
V(Lines) - 60 806 768 3 6 29
4 H(Pixels) + 115.5 97.551 1184 1024 48 32 80 1024 x 768
V(Lines) - 119.989 813 768 3 4 38
5 H(Pixels) + 144 109.756 1312 1152 48 32 80 1152 x 864
V(Lines) - 119.952 915 864 3 4 44
6 H(Pixels) + 131.75 91.493 1330 1280 48 32 80 1280 x 720
V(Lines) - 119.912 763 720 3 5 35
7 H(Pixels) + 187.25 130.035 1440 1280 160 112 248 1280x1024
V(Lines) - 119.958 1066 1024 1 3 38
8 H(Pixels) + 174.5 83.894 2080 1920 48 32 80 1920x1080
V(Lines) - 74.973 1119 1080 3 5 31
9 H(Pixels) + 235.5 113.221 2080 1920 48 32 80 1920x1080
V(Lines) - 99.93 1133 1080 3 5 45
10 H(Pixels) + 285.5 137.26 2080 1920 48 32 80 1920x1080
V(Lines) - 119.98 1144 1080 3 5 56
11 H(Pixels) + 193 68.93 2800 2560 48 32 160 2560x1080
V(Lines) - 59.94 1150 1080 10 10 50
12 H(Pixels) + 243 86.79 2800 2560 48 32 160 2560x1080
V(Lines) - 74.94 1158 1080 10 10 38
13 H(Pixels) + 308 113.24 2720 2560 48 32 80 2560x1080
V(Lines) - 99.94 1133 1080 12 10 31
14 H(Pixels) + 368.83 135.6 2720 2560 48 32 80 2560x1080
V(Lines) - 120 1130 1080 12 10 28
15 H(Pixels) + 442.6 162.72 2720 2560 48 32 80 2560x1080
V(Lines) - 144 1130 1080 12 10 28

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Only for training and service purposes
No. Factory support mode Horizontal frequency Horizontal frequency
(Preset Mode) (KHz) (Hz)
1 640x480P 31.47 60
2 720x480P 31.47 60
3 1280x720P 45 60
4 1920x1080P 67.5 60
5 1280x720P 37.5 50
6 1920x1080P 56.25 50
7 2560x1080P 56.25 60
8 2560x1080P 66 50
9 720x576P 31.25 50
10 1920x1080I 33.75 60
11 1920x1080I 28.125 50
2.3. HDMI Video input

- 7 - LGE Internal Use OnlyCopyright © LG Electronics. Inc. All rights reserved.
Only for training and service purposes
ADJUSTMENT INSTRUCTION
1. Application Range
This document is applied to LM61B chassis Monitor which is
manufactured in Monitor Factory or is produced on the basis
of this data.
2. Designation
1) The adjustment is according to the order which is designat-
ed 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 Specication Standard
5) Reserve after operation: Above 5 Minutes (Heat Run)
Temperature : at 25 °C ± 5 °C
Relative humidity : 65 % ± 10 %
Input voltage : 100 V - 240 V ~, 50/60Hz
6) Adjustment equipments: Color Analyzer (CA-210 or CA-
110), DDC Adjustment Jig equipment,
3. Main PCB check process
* APC - After Manual-Insert, executing APC
3.1. ADC Process
N/A
3.2. EDID Process
3.2.1. EDID Download
F/W includes default EDID for All input ports, aging on Mode If
AC ON, default EDID is automatically loaded to EEPROM.
Update serial number in EDID of HDMI1.
→Caution : Never connect HDMI Cable when execute
NVRAM Init and AC On at rst for downloading
HDMI EDID automatically.
** Protocol : DDC 2AB
3.3. Function Check
3.3.1. Check Screen
■ Check input and signal items. (cf. work instructions)
1) HDMI1/2 (2560 x 1080 @144Hz)
2) DisplayPort1.2 (2560 x 1080 @144Hz) - using PC
4. Total Assembly line process
4.1. Write HDCP Key
Write HDCP Key into EEPROM by using DDC2AB protocol
& HDCP Adjustment Jig equipment. If error is occurred, try to
write again. After download HDCP key, send command ‘0xE6
00 00’ for loading RAM memory correctly.
4.2. White balance adjustment
- Adjust PRESET Warm(6500K) Color coordinates and
Gamma calibration .
■ Set the CA-210 for calibration.
■ Input Gamma calibration Pattern (R,G,B, Grey 20 )
■ Set as Warm(6500K) by commanding COLOR_MODE_
CHANGE Command code.
■ Gamma calibration and verify
■ Warm(6500K) color adjustment
Adjust to meet x/y color coordinate as below
2~4 min 4~8min 8~10min 10~25min 25~40min 40min~
x 0.318 0.318 0.317 0.316 0.314 0.313
y 0.339 0.338 0.337 0.334 0.332 0.329
Save Warm(6500K) Color by commanding COLOR SAVE
Command code.
No Item Content 16 Data
1 Manufacturer ID GSM 1E 6D
2 Product ID HDMI : 30461
Display Port : 30462
FD 76
FE 76
3 Year 2016 1A
4 Version 1 1
5 Revision HDMI : 3
DP : 4
HDMI : 3
DP : 4
6 Serial Number * *
7Week / Year ** **
8 Model Name LG ULTRAWIDE -
9 Check Sum *** ***
10 Color Depth
(0x14h)
8bit
(EDID V1.4 Only)
A5
11 Physical Ad-
dress
****
(HDMI 1/2)
10/20

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Only for training and service purposes
Insert HDMI Jack which is connected with PC for White Bal-
ance or equivalent device.
→Total Assembly line should check whether the color
coordinate(x,y) data refer to below table were meet or not.
*Note : x,y coordinates are drifted about 0.007 after 30 mins
heat-run. So checking color coordinate within 5-min at
total assembly line, consider x,y coordinates might be
up to 0.007 than x,y target of each color temperature.
* Note : Manual W/B process
1) Power off => Power on (‘←’ 3 times, ‘→’ 1 time and push ‘
’)
2) and push the “←” or “→”.
3) In Service Menu.
* When doing Adjustment, Please make circumstance as
below.
4.3. DPM Operation check
■ Measurement Condition: 100 ~ 240 V @ 50/60Hz
1) Set Input to DVI-D, DisplayPort, HDMI1, HDMI2
2) Turn off the source device.
3) Check DPM operation refer to the below table.
5. Signal composition for adjustment
5.1. I2C (100K BPS)
5.2. COMMUNICATION START
# Until ACK BIT goes LOW, Repeat it.
5.3. Command form.
Command form use DDC2AB standard communication
protocol.
a. LEN : DATA BYTE number to send.
b. CMD : Command language that monitor executes.
c. VAL : FOS DATA
d. CS : Dada’s CHECHSUM that transmit
e. DELAY : 50MS
f. A : Acknowledge
5.4. Screen adjust command (LENGTH = 84)
Color
Temperature
Cool 9,300 °K X=0.283 (±0.03)
Y=0.298 (±0.03)
<Test Signal>
Inner pattern
(255gray,80IRE)
Medium 8,000 °K X=0.295 (±0.03)
Y=0.305 (±0.03)
Warm 6,500 °K X=0.313 (±0.03)
Y=0.329 (±0.03)
Luminance
(cd/m²)
Cool Min : 170 <Test Signal>
Inner pattern
(255gray,80IRE)
Medium Min : 200
Warm Min : 260
Operating
Condition
Sync (H/V)
or Video
EUT
(MSPG6100)
LED
(SET)
Wattage
(W)
Sleep
mode
Off/Off Off White blinking 1.2
Off
mode
- - Off 0.3
No.
Adjustment contents
CMD(he
x)
AD R
VAL(hex)
Explanation
1
EEPR OM AL L IN ITIAL
E4
00
00
adjustment Initializatio
n
2
EEPR OM R EAD
E7
Slave add
At EEPR O M R e ad
3
EEPR OM W R ITE
E8
Slave add
D a ta
Write data at EEPRO
M
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
FAC TO R Y R ESET
F0
00
0
Factory reset
9
AUTO_COLOR_ADJUS
T
F1
00
0
AUTO COLOR Tunin
g
0:Auto color
10
COLOR_MODE_CHAN
GE
F2
00
01
WARM(6500K)
02
COOL(9300K)
11
Elapsed time Clear
E9
00
00
Aging off &Clear elap
sed time
12
Aging On/Off
F3
00
FF/00
FF:O N / 0 0 :O F F
13
InputSelect
F4
00
0xD0
1:DisplayPort
0x90
2 :H D MI1
0x91
3 :H D MI2
0xD1
4 : U SB-C
14
SYSTEM R ESET
F5
00
00
R e s ta r t Sy s te m
15
SelectLanguage
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:Japanese
0F:Korean
11 :Traditional Chine
se
EDID SN UPDATE
0x77
0
0x01~0x02
0x01 : HDMI1
0x02 : HDMI2
A PD c o mma nd
0xF7
00
0x00~0x01
0x00:OFF
0x01:ON
Module name
LM340WW2(SS)(A1)

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Only for training and service purposes
5.5. EEPROM Data Write
5.5.1 Siganl TABLE
LEN : 84h+Bytes
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
5.5.2. Command Set
* Use
■ FOS Default write :
<14mode data> write
SyncFlags, HPeriodH, HPeriodL, VtotalH, VtotalL, SrcHTo-
talH, SrcHTotalL
SrcHStartH, SrcHStartL, SrcVStartH,SrcVStartL,
HsyncPhase
■ Temporary Data write: Write to particular address of EE-
PROM.
5.6. E2PROM Data Read
5.6.1. Signal TABLE
5.6.2. COMMAND SET
5.6.3. Use
Read E2PROM’s specic area as unit of 128(80h)-byte. (84h)
5.6.4 EDID Write
EEPROM access by using DDC2B protocol
■ 1-Byte write
L : 0x00~0x7F
D : data
■ 8-byte write
L : 0x00,0x10,….0x70
5.6.5. EDID Read
- DDC2B Command.(A0/A1)
- 128 Byte transfer of EDID Buffer of MICOM
No. Adjustment
contents
CMD(hex) LEN Explanation
1EEPROM
WRITE
E8 94 16-Byte Write
2 (84+n) n-byte Write
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

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Only for training and service purposes
TROUBLESHOOTING GUIDE
1) MAIN IC : Process display/audio signal/control signal
Location no. : IC200
2) DC-DC Converter : Convert from 19V to proper voltage according to IC spec
Location No. : IC402, IC403, IC700, IC701, IC900, IC902
3) Serial ash memory for Monitor : rmware saving
Location No. : IC202
4) LED driver IC : Supporting proper voltage and current according to BLU spec
Location No. : IC700, IC701
5) Headphone AMP : Amplify audio signal from Main IC and then provide amplifying signal to H/P interface
Location No. : IC501
6) USB Hub IC : function of HUB to the PC, should be connect to the PC USB-A/B cable.
Location No. : IC901

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Only for training and service purposes
BLOCK DIAGRAM
e-
DP
MST9U11Q1
(Mstar)
E-DP
DC Jack
HDMI Input
X-TAL
12MHz
HDMI
SWITCH
TMDS
TMDS
TMDS
TP A6138
(HP AMP)
HP
+19V
DNW116
I2S SP(L)
SP(R)
3.3V 1.8V 1.15V
HP
DP Input
TMDS
USB Type A
USB HUB
USB Type A
USB3.0
USB UP
USB3.0
Line-out
Analog L,R
Line Out
READY

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Only for training and service purposes
EXPLODED VIEW
900
910
911
301
830
300
200
540
510
400
720
LV1 700
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts
are identified by in the Schematic Diagram and 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

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Only for training and service purposes
DISASSEMBLY
1. Preparation
1.1. Preparation tool (jig)
1.2. Preparation tool (Curved PAD)
2. Stand Assembly Separation
1) Lay the set by the Curved PAD in Box
2) Disassemble the Stand after pull the button to down
3) Disassemble the Thumb Screw (2ea)
4) Remove the Screw (4ea).
5) Disassemble the Back Cover (By using JIG)

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Only for training and service purposes
6) Disconnect LED Cable , Control Assemble (Latch Type)
,E-Dp Cable
7) Remove the screw. (17EA)

THERMAL
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
C100
0.1uF
16V
R103
0
R102
0
HDMI2_5V
R104
0
OPT
HDMI2_SDA
HDMI2_DET
HDMI2_HPD
HDMI2_SCL
C102
0.1uF
16V
DP_HPD
R111 1K
OPT
R107
0
HDMI2_RX2+
+3.3V_NORMAL
HDMI2_RX2-
HDMI2_RX1+
HDMI2_RX1-
HDMI2_RX0+
HDMI2_RX0-
HDMI2_RXC+
HDMI2_RXC-
R101
0
OPT
R108
10K
+3.3V_NORMAL
R105
100K
R106 10
+3.3V_NORMAL
R115
10K
C101
0.1uF
16V
+3.3V_NORMAL
R110
0
R109 1K
OPT
R114
10K
HDMI1_RX2-
HDMI1_SDA
HDMI1_DET
HDMI1_HPD
HDMI1_RX1+
HDMI1_5V
HDMI1_RX2+
HDMI1_RX0+
HDMI1_RX0-
R100
0
OPT
HDMI1_SCL
HDMI1_RXC+
HDMI1_RX1-
HDMI1_RXC-
DP_AUXN
DP_AUXP
R131
10
+3.3V_NORMAL
DP_RX_SDM
AR103
5.1
AR104
5.1
AR100
5.1
AR101
5.1
C104
0.1uF
C103
0.1uF
DP_RX2P
R119
100K
DP_RX2NDP_RX3P
R123
100K
R127
100K
DP_RX0P
R117
100K
DP_RX0N
R116
100K
R124
100K
DP_RX1P
R118
100K
R126
100K
DP_RX1N
HDMI2_SDA
HDMI_RXC+
HDMI2_RX1-
HDMI_RX1+
HDMI2_RX2+
IC101
TS3DV642A0RUAR
1VCC 2EN 3SCL 4SDA 5D0+ 6D0- 7D1+ 8D1- 9NC_1
10 D2+ 11 D2- 12 D3+ 13 D3- 14 HPD 15 CEC 16 SEL1 17 SEL2
18
CEC_A
19
HPD_A
20
CEC_B
21
HPD_B
22
D3-B 23 D3+B 24 D2-B 25 D2+B 26 B1-B 27 B1+B 28 D0-B 29 D0+B 30 NC_2 31 D3-A 32 D3+A 33 D2-A 34 D2+A 35 D1-A 36 D1+A 37 D0-A 38 D0+A
39 SDA_B
40 SCL_B
41 SDA_A
42 SCL_A
43
[EP]GND
HDMI1_RXC-
HDMI_HPD
HDMI2_SCL
HDMI_SCL
HDMI2_RX0+
R129
4.7K
HDMI2_RXC+
HDMI_RXC-
HDMI1_RX1+
+3.3V_NORMAL
HDMI1_RX2+
HDMI_RX1-
HDMI1_HPD
R121
4.7K
HDMI2_RX2-
HDMI_RX0+
HDMI1_RXC+
C106
0.1uF
16V
HDMI1_RX2-
HDMI_SELECTION
HDMI2_HPD
HDMI1_SCL
HDMI2_RXC-
HDMI_RX2+
HDMI1_RX1-
R125
4.7K
HDMI1_RX0-
HDMI_RX2-
HDMI1_SDA
HDMI_SDA
HDMI2_RX1+ HDMI2_RX0- HDMI1_RX0+
HDMI_RX0-
JK102
62L020S-34A1N-7T0201-HF_
14 14
13 13
55
12 12
11 11
22
19 19
18 18
10 10
44
11
17 17
99
88
33
16 16
77
66
15 15
20 20
21
21
AR102
33
AR105
33
DP_DET
VA100
18V
10pF VA104
18V
10pF
VA102
18V
10pF
VA109
18V
10pF
OPT
VA107
18V
10pF
VA105
18V
10pF
VA110
18V
10pF
OPT
VA108
18V
10pF
VA103
18V
10pF
VA101
18V
10pF
VA106
AR110
4.7K HDMI1_5V
+5V_STANDBY
R1400
OPT
AR111
4.7K HDMI1_5V
+5V_STANDBY
R1410
OPT
JK100
YKF45-7058V
14 NC
13 CEC
5DATA1_SHIELD
20
SHIELD
12 CLK-
11 CLK_SHIELD
2DATA2_SHIELD
19 HPD
18 +5V_POWER
10 CLK+
4DATA1+
1DATA2+
17 DDC/CEC_GND
9DATA0-
8DATA0_SHIELD
3DATA2-
16 SDA
7DATA0+
6DATA1-
15 SCL
JK101
YKF45-7058V
14 NC
13 CEC
5DATA1_SHIELD
20
SHIELD
12 CLK-
11 CLK_SHIELD
2DATA2_SHIELD
19 HPD
18 +5V_POWER
10 CLK+
4DATA1+
1DATA2+
17 DDC/CEC_GND
9DATA0-
8DATA0_SHIELD
3DATA2-
16 SDA
7DATA0+
6DATA1-
15 SCL
R113
1M
R112
1M
JP103
JP104
JP105
JP100
JP101
JP102
JP106
JP107
JP108
JP109
D100
BAT54C_Suzhou
A2
C
A1
D101
BAT54C_Suzhou
A2
C
A1
R132
10
OPT
R130
1M
OPT
+3.3V_NORMAL
R133
1M
OPT
AR106
5.1
AR107
5.1
DP_RX3N
DP_RX3P
DP_RX2N
DP_RX2P
DP_RX1N
DP_RX1P
DP_RX0N
DP_RX0P
DP_RX3N
ML_LANE_3-
AUX_CH-
ML_LANE_3+
ML_LANE_1-
ML_LANE_0+
CONFIG2
HOT_PLUG
GND_4
CONFIG1
GND_2
GND_1
RETURN
DP_PWR[3.3V]
ML_LANE_2+
ML_LANE_1+
GND_0
GND_3
ML_LANE_0-
AUX_CH+
ML_LANE_2-
HDMI2
(Straight)
DP
HDMI1
(Straight)
HDMI2.0
HDMI2.0
DISPLAY PORT
20141112 APPLY 5.1OHM
20141112 APPLY 5.1OHM
PORT NO.:HDMI1
PORT NO.:HDMI2
This GND Pattern should be very thick
This GND Pattern should be very narrow
This GND Pattern should be very narrow
This GND Pattern should be very thick
For MAC mini DP issue
HDMI2.0 SWITCH
SIGNAL INPUT 1 9
34UC79G 2016.03.08
Copyright ⓒ 2016 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only

THERMAL
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
OSCO
X200
12MHz
OSCI
+3.3V_NORMAL
+1.15V_VDD
DP_RX0N
R219 10
CS
SDO
+1.15V_VDD
EDP2-
C282 0.1uF 16V
AVDD_HRX0
+1.15V_VDD_DDR_B
VDDP
BOOT4
AVDD_AUDIO
AVDD_RX AVDDL_RX
EDP0+
SCK
AVDD_MOD
C277 0.1uF 16V
AVDDL_MOD
DP_HPD
EDP1-
AVDD_ADC
PD_CTL
AVDDL_PREDRV
VDD_DRAM_A
EDP1+
AVDD_PLL
SDI
AVDDL_HRX0
HOLD
AVDD_DP
HDMI2_DET
KEY2
HDMI_SCL
C280 0.1uF 16V
DP_RX1P
+1.15V_VDD
C278 0.1uF 16V
OSCI
AVDDL_PREDRV
EDP_AUX_CHP
C274
0.1uF
16V
+1.15V_VDD
+1.15V_VDD
AVDDL_MOD
HDMI_SDA
HDMI_RX0+
R223
100K
OPT
HDMI_RX2+
OSCO
VDDP
R224
100K
OPT
EDP_HPD
VDDP
R222
47K
C276 0.1uF 16V
DP_RX2N
C279 0.1uF 16V
+1.15V_VDD
DP_AUXP
PANEL_ON
HDMI_RX0-
HDMI_RX1+
HDMI_HPD
HDMI_RXC+
EDP3-
HDMI_RXC-
BOOT2
EDP0-
AVDDL_PREDRV
+1.15V_VDD
KEY1
C281 0.1uF 16V EDP2+
C275
0.1uF
16V
DP_RX3N
HDMI_5V
HDMI_RX2-
VDD_DRAM_B
HP_ROUT_MAIN
DP_RX2P
SYS_EEPROM_SCL
AVDD_PLL
DP_RX3P
EDP3+
C283 0.1uF 16V
AVDD_MOD
DP_AUXN
C262
0.1uF
OPT
+1.15V_VDD_DDR_A
HDMI_RX1-
AVDDL_MOD
VDDIO_A
DP_RX0P
R209
10
PD_CTL_DDR
WP_SPI
EDP_AUX_CHN
AVDD_MOD
VDDIO_B
DP_RX1N
HP_LOUT_MAIN
SYS_EEPROM_SDA
VDDP
AVDDL_DP
+3.3V_NORMAL
R201
10K
R200
10K
OPT R205
10K
OPT R207
10K
BOOT4
R202
10K
BOOT3
BOOT1
BOOT2
R206
10K
R203
10K
OPT R208
10K
OPT
HDMI1_DET
+1.15V_VDD
R229 10
R242
200K
R243
200K
DP_RX_SDM
AVDD_USB
WLED_ENABLE
SYS_EEPROM_WP
R232
100K
R261
10K
HOLD
SDO
C267
0.1uF
CS
C266
0.1uF
16V
IC202
MX25L8006EM2I-12G
3
WP#
2
SO/SIO1
4
GND
1
CS#
5SI/SIO0
6SCLK
7HOLD#
8VCC
SCK
R251
4.7K SDI
R260
10K
SYS_EEPROM_WP
SYS_EEPROM_SCL
+3.3V_NORMAL
+3.3V_NORMAL
SYS_EEPROM_SDA
WP_SPI
RAC33437501
S1
RAC33437501
S2
RAC33437501
S3
RAC33437501
S4
RAC33437501
S5
BOOT1 BOOT3
C229
4.7uF
25V
EDP3+
EDP1+
R189
10K
EDP_AUX_CHP
+10V_PANEL
EDP_HPD
EDP3-
C238
4.7uF
25V
OPT
EDP0-
EDP1-
EDP_AUX_CHN
EDP2+
EDP2-
EDP0+
C291
68pF
50V
OPT
C290
68pF
50V
OPT
C293
68pF
50V
OPT
C292
68pF
50V
OPT
+3.3V_NORMAL
C265
1000pF
50V
C264
1000pF
50V
C204
1uF
10V
C205
1uF
10V
HP_OFF
R21010
R217
4.7K
R218 4.7K
HDMI2_5V_SEL
R220
4.7K
HDMI_5V
HDMI2_5V
HDMI1_5V_SEL
HDMI1_5V
R221 4.7K
HDMI_5V
HDMI_SELECTION
R236
4.7K
JP204
R235
4.7K
OPT
KEY1
CONTROL_LED
R237
4.7K
OPT
+5V_STANDBY
JP205
JP200
JP203
C201
68pF
KEY2
JP206
+3.3V_NORMAL
R227
10
R228
10
C200
1uF
10V
VR200
18V
10pF VR201
18V
10pF
VR203
18V
10pF
VR202
18V
10pF
AMP_SCL
AMP_SDA
AR200
33
AMP
C203
10uF
10V
OPT
+5V_STANDBY
R233
10K
R234
33
C202
0.47uF
16V
R204
3.3K R225 3.3K
AR204
33
AR201
33
R254
33
AR202
33
R255
33
AR203
10K
AUD_LRCK
AUD_DATA
AUD_SCK
HP_DET
CONTROL_LED
R252
10K
OPT R262
10K
P201
12507WR-08L
8P_WAFER
1
2
3
4
5
6
7
8
9
IR
+3.3V_NORMAL
C299
10uF
10V
R2311K
DP_DET
R230 1K
+3.3V_NORMAL
P200
12507WS-04L
De-bug
1
2
3
4
5AR206
10K
+3.3V_NORMAL
R256 0
OPT
5V_ST_ON
R214 33
AMP
R216 33
AMP
R226 33
AMP
R240 33
AMP
R257
1K
L202
BLM15PX121SN1
RED LED OPT
L200
L201
BLM15PX121SN1
WHITE LED OPT
AR208
4.7K
OPT
R241 0
+3.3V_NORMAL
R246
10K
OPT
AMP_nMUTE
AMP_RESET R247
10K
OPT
AR209
33
AMP_nMUTE
HP_MUTE
R2770
OPT
R2500
OPT
R2480
OPT
HDMI1_5V_SEL
HDMI2_5V_SEL
R213
10
IR OPT
ITLC
ITLC R276
0OPT
P101
05030HR-H30C1(G)
EDP WAFER
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
R2660 OPT
R2650 OPT
HDMI_5V
ZD200
5.6V
Q204
2N3904S
E
B
C
Q201
SSM3J332R
S
G
D
Q203
SSM3J332R
S
G
D
JP201
Q200
E
B
C
Q202
E
B
C
D200
BAT54C_Suzhou
A2
C
A1
IC201
BR24G32FJ-3AGTE2
3
A2
2
A1
4
GND
1
A0
5SDA
6SCL
7WP
8VCC
R279
10K
R2380 OPT
R253 0
OPT
R249 0
OPT
R2120
OPT R2110
AMP
USB_HUB_SDA
USB_HUB_SCL
AMP_19V_ON
R2450
AMP
R2390
OPT IR
AMP_3.3V_ON
USB_HUB_RESET
R215
0
AMP
AMP_RESET
C263
1uF
10V
C210
4.7uF
25V
OPT
AUD_LINE_OUT_L
AUD_LINE_OUT_R
IC200
MST9U10Q1
MSTAR Q1
1
SAR10/GPIO_X10
2
CABLE5V1/GPIO_X11
3
DDCD3_CK/GPIO_X13
4
DDCD3_DA/GPIO_X14
5
VDDP_1
6
GND_1
7
VDD_1
8
HPD1/GPIO_X12
9
HRX0_CN
10
HRX0_CP
11
AVDD_HRX0
12
HRX0_0N
13
HRX0_0P
14
GND_2
15
HRX0_1N
16
HRX0_1P
17
AVDDL_HRX0_1
18
AVDDL_HRX0_2
19
HRX0_2N
20
HRX0_2P
21
GND_3
22
AVDD_DP
23
DPRX_0P
24
DPRX_0N
25
GND_4
26
DPRX_1P
27
DPRX_1N
28
AVDDL_DP
29
DPRX_2P
30
DPRX_2N
31
GND_5
32
DPRX_3P
33
DPRX_3N
34
AUXN
35
AUXP
36
NC_1
37
NC_2
38
NC_3
39
VDD_2
40
GND_6
41
GND_7
42
GND_8
43
AVDD_ADC
44
BIN0M
45
BIN0P
46
GIN0M
47
GIN0P
48
SOGIN0
49
RIN0M
50
RIN0P
51
HSYNC0
52
VSYNC0
53
AVDD_AUDIO_1
54
LINEIN_L0
55
LINEIN_R0
56
VRM_ADC
57
VAG
58
LINEOUT_L0
59
LINEOUT_R0
60
GND_9
61
EAROUT_L
62
EAROUT_R
63
AVDD_AUDIO_2
64
SPDIFO/GPIO_A8
65
AUMCK/GPIO_A7
66
AUWS/GPIO_A6
67
AUSD0/GPIO_A2
68
AUBCK/GPIO_A1
69
AUMUTE/GPIO_A0
70
DDCA_CK/RS232_RX
71
DDCA_DA/RS232_TX
72
GPIO42/PWM6
73
GPIO43/PWM7
74
GPIO44/PWM8
75
GPIO45/PWM9
76
GND_10
77
RESET
78
GND_11
79
VDD_NODIE_1
80
VDDP_2
81
CSZ
82
SDO
83
SDI
84
SCK
85
WP/GPIO10
86
HOLD/GPIO11
87
GPIO00/MSCL0
88
GPIO01/MSDA0
89
GPIO02/PWM0
90
GPIO03/PWM1
91
MSCL0/GPIO04
92
MSDA0/GPIO05
93
GPIO06/PWM4
94
GND_12
95
XOUT
96
XIN
97
AVDD_PLL_1
98
GND_13
99
VDD_3
100
CID
101
VBUS
102
AVDD_USB
103
GND_14
104
USB_DM
105
USB_DP
106
DVDD_DDR_A
107
DVDD_DDR_RX_A
108
AVDD_PLL_2
109
VDDIO_A_1
110
VDDIO_A_2
111
VDD_4
112
VDDIO_A_3
113
VDD_DRAM_A_1
114
VDD_DRAM_A_2
115
VDD_DRAM_A_3
116
VDD_5
117
GND_15
118
AVDDL_PREDRV_1
119
GND_16
120
AVDDL_MOD_1
121
NC_4
122
NC_5
123
NC_6
124
NC_7
125
AVDD_MOD_1
126
GND_17
127
NC_8
128
NC_9
129 NC_10
130 NC_11
131 NC_12
132 NC_13
133 NC_14
134 NC_15
135 AVDD_MOD_2
136 AVDDL_PREDRV_2
137 GND_18
138 AVDDL_MOD_2
139 NC_16
140 NC_17
141 NC_18
142 NC_19
143 NC_20
144 NC_21
145 NC_22
146 NC_23
147 NC_24
148 NC_25
149 NC_26
150 NC_27
151 VDD_6
152 AVDD_LPLL
153 GND_19
154 EDP_HBR2_3-
155 EDP_HBR2_3+
156 EDP_HBR2_2-
157 EDP_HBR2_2+
158 EDP_HBR2_1-
159 EDP_HBR2_1+
160 EDP_HBR2_0-
161 EDP_HBR2_0+
162 NC_40
163 NC_41
164 NC_42
165 NC_43
166 GND_20
167 AVDDL_MOD_3
168 GND_21
169 AVDDL_PREDRV_3
170 AVDD_MOD_3
171 NC_28
172 NC_29
173 NC_30
174 NC_31
175 NC_32
176 NC_33
177 NC_34
178 NC_35
179 NC_36
180 NC_37
181 NC_38
182 NC_39
183 VDD_7
184 AUXTXN0
185 AUXTXP0
186 AUXTXN1
187 AUXTXP1
188 AUXTXN2
189 AUXTXP2
190 AUXTXN3
191 AUXTXP3
192 VDDP_3
193 VDD_NODIE_2 194 EDP_HPD[0] 195 EDP_HPD[1] 196 EDP_HPD[2] 197 EDP_HPD[3] 198 GPIO54/EXTINT0 199 GPIO55/EXTINT1 200 GPIO56/EXTINT2 201 GPIO57/EXTINT3 202 GND_22 203 VDDP_4 204 GPIO20/PWM2 205 GPIO21/PWM3 206 GPIO22/PWM4 207 GPIO23/PWM5 208 GPIO24/PWM6 209 GPIO25/PWM7 210 GPIO26/CEC 211 GPIO27/IR 212 SAR0/GPIO_SAR0 213 SAR1/GPIO_SAR1 214 SAR2/GPIO_SAR2 215 SAR3/GPIO_SAR3 216 VDD_8 217 DVDD_DDR_B 218 DVDD_DDR_RX_B 219 AVDD_PLL_3 220 VDDIO_B_1 221 VDDIO_B_2 222 VDD_9 223 VDDIO_B_3 224 VDD_DRAM_B_1 225 VDD_DRAM_B_2 226 VDD_DRAM_B_3 227 GPIO_X40/SAR7 228 GPIO_X41 229 GPIO_X42 230 GPIO_X43/RS232_RX 231 GPIO_X44/RS232_TX 232 GPIO_X30/SAR8 233 GPIO_X31 234 GPIO_X32 235 GPIO_X33/RS232_RX 236 GPIO_X34/RS232_TX 237 VDD_10 238 AVDDL_RX 239 NC_44 240 NC_45 241 NC_46 242 NC_47 243 NC_48 244 NC_49 245 NC_50 246 NC_51 247 GND_23 248 AVDD_RX 249 NC_52 250 NC_53 251 NC_54 252 NC_55 253 NC_56 254 NC_57 255 NC_58 256 NC_59
257
[EP]
AUD_MCLK
AMP_SCL
AMP_SDA
AR205
33
AMP
R259
0
R2580
R2440
WLED_ADIM
WLED_PDIM
VBUS_UP
C260
13pF 50V
C259
13pF 50V
2 10MAIN IC / Key
2016.03.0334UC79G
CRYSTAL
Close to IC
SBUS
H
H
GPIO43
GPIO45
L
EXT RIU
GPIO44
L
L
H
FUNCTION
H
BOOT-STRAP
GPIO45
H L
GPIO42
L
BOOT from R2
L
L
GPIO42
L
L
GPIO43
BOOT from 51
L
H
GPIO44
20141112 Request from MSTAR
SYSTEM
EEPROM
FLASH MEMORY
SYSTEM EEPROM
FLAH
8MBIT
SOLDER PRE-FORM
MODULE-eDP
IIC for Debugging
(from MP, delete this parts)
20150116
Crystal matching test
22pF->15pF
Joystick Key
Close to scalar P79
20160603
Crystal matching test
15pF->13pF
Copyright ⓒ 2016 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
C122
10uF
10V
+1.15V_VDD
C216
10uF
10V
C141
0.1uF
16V
C297
10uF
10V
C137
0.1uF
16V
C237
0.1uF
16V
C111
10uF
10V
C147
0.1uF
16V
C298
0.1uF
16V
C128
4.7uF
6.3V
OPT
C243
0.1uF
16V
VDDIO_B
+1.15V_VDD_DDR_A
C236
0.1uF
16V
C152
0.1uF
16V
C138
0.1uF
16V
C218
10uF
10V
C207
0.1uF
16V
OPT
C144
0.1uF
16V
C110
10uF
10V
C127
4.7uF
6.3V
OPT
C197
0.1uF
16V
C157
0.1uF
16V
AVDD_USB
C108
10uF
10V
AVDD_AUDIO
AVDDL_PREDRV
AVDDL_DP
C112
10uF
10V
C225
10uF
10V
OPT
C162
0.1uF
16V
AVDD_MOD
C178
10uF
10V
C151
0.1uF
16V
C161
0.1uF
16V
OPT
C253
0.1uF
16V
OPT
VDD_DRAM_B
C164
0.1uF
16V
AVDDL_RX
C228
10uF
10V
OPT
C199
0.1uF
16V
C156
0.1uF
16V
C217
10uF
10V
C167
0.1uF
16V
C184
10uF
10V
OPT
C155
0.1uF
16V
OPT
C182
10uF
10V
OPT
C169
0.1uF
16V
C219
10uF
10V
C194
0.1uF
16V
C131
0.1uF
16V
C136
0.1uF
16V
AVDD_ADC
C176
10uF
10V
C153
0.1uF
16V
OPT
C246
0.1uF
16V
AVDD_HRX0
C192
0.1uF
16V
C174
0.1uF
16V
OPT
C129
1uF
10V
OPT
C116
10uF
10V
C213
10uF
10V
C239
0.1uF
16V
C177
10uF
10V
C189
0.1uF
16V
OPT
C250
0.1uF
16V
C215
10uF
10V
C233
0.1uF
16V
C230
0.1uF
16V
C198
0.1uF
16V
C179
0.1uF
16V
OPT
C240
0.1uF
16V
AVDD_RX
C223
10uF
10V
OPT
C166
0.1uF
16V
OPT
C193
0.1uF
16V
C185
0.1uF
16V
OPT
AVDDL_HRX0
C231
0.1uF
16V
C214
10uF
10V
C234
0.1uF
16V
VDDP
C208
0.1uF
16V
C242
0.1uF
16V
+3.3V_NORMAL
C220
10uF
10V
VDDIO_A
C115
10uF
10V
C139
0.1uF
16V
C251
0.1uF
16V
OPT
AVDD_PLL
AVDDL_MOD
C120
10uF
10V
C222
10uF
10V
OPT
C224
10uF
10V
OPT
C175
10uF
10V
C249
0.1uF
16V
C183
10uF
10V
OPT
C148
0.1uF
16V
C109
10uF
10V
C257
0.1uF
16V
OPT
C235
0.1uF
16V
VDD_DRAM_A
C114
10uF
10V
C241
0.1uF
16V
C154
0.1uF
16V
OPT
C252
0.1uF
16V
OPT
C181
10uF
10V
OPT
C245
0.1uF
16V
C134
0.1uF
16V
C130
0.1uF
16V
C191
0.1uF
16V
C123
10uF
10V
C206
0.1uF
16V
OPT
C160
0.1uF
16V
OPT
+1.8V_DDR
C196
0.1uF
16V
C133
0.1uF
16V
C142
0.1uF
16V
+1.15V_VDD_DDR_B
C232
1uF
10V
AVDD_DP
C170
0.1uF
16V
C227
10uF
10V
OPT
C209
0.1uF
16V
C163
0.1uF
16V
OPT
C248
1uF
10V
C255
1uF
10V
C226
1uF
10V
OPT
C117
1uF
10V
C188
0.1uF
16V
C187
0.1uF
16V
L103
BLM15PX121SN1
L107
BLM15PX121SN1
L100
BLM15PX121SN1
L102
BLM15PX121SN1
L104
BLM15PX121SN1
L101
BLM15PX121SN1
L108
BLM15PX121SN1
L116
BLM15PX121SN1
L124
BLM15PX121SN1
L120
BLM15PX121SN1
L118
BLM15PX121SN1
L123
BLM15PX121SN1
L122
BLM15PX121SN1
L121
BLM15PX121SN1
L119
BLM15PX121SN1
L117
BLM15PX121SN1
C107
100uF
16V
OPT
L114
BLM15PX121SN1
L112
BLM15PX121SN1
L113
BLM15PX121SN1
L111
BLM15PX121SN1
MAIN IC-CAP
close to Q1
Reserved on Botton side
Reserved on Botton side
close to Q1
close to Q1
Reserved on Botton side
close to Q1
close to Q1
close to Q1
close to Q1
close to Q1
close to Q1
Place Cap on Botton side
close to Q1
close to Q1
Place Cap on Botton side
Reserved on Botton side
close to Q1
Reserved on Botton side
close to Q1
close to Q1
MAIN IC POWER LINE - CAPACITOR
Reserved on Botton side
Far away AVDDL_PREDRV
Reserved on Q1 bottom layer.
pin99/pin116/pin7/pin216
close to Q1
Reserved on Q1 bottom layer.
pin167
close to Q1
Reserved on Q1 bottom layer.
pin169
20141028
Far away +1.15V_VDD bypass capclose to s.w. power
close to Q1
close to Q1
Place Cap on Botton side
close to Q1
close to Q1
-> 23mA
-> 23mA
-> 38mA
-> 75.2mA
-> 1291mA
-> 4.6mA
-> 11.7mA
-> 26mA
-> 115.6mA
-> 135.4mA
-> 46.8mA
-> 49.1mA
-> 25.6mA
-> 5.8mA
-> 8.8mA
-> 76.4mA
-> 174.6mA
-> 173.6mA
-> 100.5mA
-> 99.8mA
34UC79G 2016.03.08
93
-> 159mA
Copyright ⓒ 2016 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only

THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
PANEL_ON
C418
0.1uF
16V
+10V_PANEL
C415
0.1uF
50V
R413
2K
OPT
R401
47K
IC402
MP2315GJ
3
SW
2
IN
4
GND
1
AAM
5BST
6EN/SYNC
7VCC
8FB
C406
0.1uF
50V
C420
0.1uF
50V
+19V
R405 100
C414
0.1uF
16V
OPT
C401
4.7uF
25V
C403
4.7uF
25V
JP403 JP402 JP404 JP405
JP401
JP400
C409
0.1uF
50V
C410
68uF
35V
105C
+19V
C428
4.7uF
25V
C424
4.7uF
25V
C427
4.7uF
25V
R408
100
JK400
KJA-DC-1-0032
11
22
44
R421
120K
1%
+3.3V_NORMAL
R424
10K
Q403
2N3904S
E
B
C
Q401
2N3904S
E
B
C
R404
10K
R403
1K
PD_CTLZ_1.8V
AR401
10K
PD_CTL
R423
1K PD_CTL_DDR
AR400
10K
PD_CTLZ_1.15V
+3.3V_NORMAL
R422
10K
1%
R414
51K
L408
BLM15PX121SN1
L400
BLM15PX121SN1
C438
0.1uF
50V
C429
10uF
10V
C430
10uF
10V
OPT
R434
47K
1%
R425
36K
1%
R427
200K
R433
24K
1%
ZD402
2.5V
PD_CTLZ_1.15V
C432
0.47uF
16V
R430
100
C434
0.1uF
16V
C436
10uF
10V
OPT
C431
0.1uF
16V
+1.8V_DDR
C435
10uF
10V
IC403
MP2122GJ
3
SW2
2
EN2
4
EN1
1
FB2
5GND
6SW1
7IN
8FB1
R429
10K
OPT
C433
0.1uF
50V
ZD403
2.5V
L409
NR5040T2R2N
R428
10K
OPT
C437
10uF
10V
+5V_STANDBY
L410
NR5040T2R2N
PD_CTLZ_1.8V
R431
100
+1.15V_VDD
R432
200K
R426
33K
1%
Q400
T2N7002AK
S
G
D
Q402
T2N7002AK
S
G
D
L403
10uH
MAIN POWER
3A
Setting: 10.40V(=0.8(1+120K/10K)
For Jig Test
DC-JacK (Straight Type)
20141112 OPT->APPLY
34UC79G 2016.03.08
94
Power sequence Circuit for 1.8V / 1.15V
Copyright ⓒ 2016 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only

THERMAL
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
AMP_SDA
JP504
JP500
C518
390pF
50V
AMP
R516
4.7K
AMP
C512
0.1uF
50V
AMP
C515
0.1uF
16VOPT
AMP_nMUTE
C520
390pF
50V
AMP
R500
1K
AMP
C502
4.7uF
10V
AMP
C523
1uF
AMP
10V
JP501
C525
0.47uF
50V
OPT
+19V_AMP
C516
0.1uF
16V
OPT
R517
4.7K
AMP
AMP_RESET
JP503
C524
1uF
AMP
10V
IC500
DNW116F
AMP
1
GPO17/EVNT
2
VSSPLL
3
VPLL18
4
XTALI/CLKIN
5
XTALO
6
GPIO03/SDI1
7
GPIO02/SDI0
8
VDD_1
9
VD18
10
NRESET
11
GPIO04/SDI2
12
GPIO05/SDI3
13
GPO07/SDO1/CLKOUT/REF
14
GPO18/SDO2/I2CMS
15
SDA
16
SCL
17
VDD_2
18
BST2B
19
VSSP2_1
20
OUT2B_1
21
OUT2B_2
22
VDDP2_1
23
VDDP2_2
24
OUT2A_1
25 OUT2A_2
26 VSSP2_2
27 BST2A
28 NU_1
29 NU_2
30 VDR2
31 VDR1
32 NU_3
33 NU_4
34 BST1B
35 VSSP1_1
36 OUT1B_1
37 OUT1B_2 38 VDDP1_1 39 VDDP1_2 40 OUT1A_1 41 OUT1A_2 42 VSSP1_2 43 BST1A 44 VDD_3 45 GPO06/SDO0/NTEST 46 NMUTE/GPIO16 47 GPIO01/SYNC 48 GPIO00/DCLK
49
[EP]
C507
0.022uF
16V
AMP
+19V_AMP
TP500
R518
4.7K
AMP
C508
0.022uF
16V
AMP
R513
3.3
AMP
AUD_DATA
JP502
+3.3V_AMP
C528
0.22uF
50V
AMP
C503
0.1uF
16V
AMP
AUD_MCLK
JP505
R501
4.7K
OPT
C521
0.022uF
16V
AMP
C530
0.22uF
50V
AMP
R510
3.3
AMP
+3.3V_AMP
C500
4.7uF
10V
AMP
C505
0.1uF
16V
AMP
C526
0.47uF
50V
OPT
R503
4.7K
OPT
C529
0.22uF
50V
AMP
C504
0.1uF
16V
AMP
P500
250A1-WR-H04M
WAFER-ANGLE
AMP
1
2
3
4
+3.3V_AMP
R505
4.7K
AMP
C527
0.22uF
50V
AMP
C517
390pF
50V
AMP
AUD_SCK
C514
0.1uF
50V
AMP
R512
3.3
AMP
AMP_SCL
C501
0.1uF
16V
AMP
C522
0.022uF
16V
AMP
R511
3.3
AMP
R515
4.7K
AMP
AUD_LRCK
C519
390pF
50V
AMP
R529
470K
HP_DET
VR501
ICVL0518100Y500FR_
OPT
JP507
VR502
+3.3V_HP_AMP
JP508
JP506
C544
1uF
10V
JP509
VR500
R533
1K
Q502
2N3904S
LINEOUT_AMP
E
B
C
R506
4.7K
OPT
R514
10K
OPT
+3.3V_NORMAL
R504
4.7K
AMP
R508
15K
AMP
C506
2.2uF
25V
AMP
+19V
+3.3V_NORMAL
R521
10K
LINEOUT_AMP
R523
0
OPT
C532
1uF
10V
OPT
R502
10K
OPT
R519
4.7K
LINEOUT_AMP
C533
10uF
10V
LINEOUT_AMP
+19V_AMP
R522
1K
LINEOUT_AMP
C531
2.2uF
10V
LINEOUT_AMP
R509
0
OPT
+3.3V_NORMAL
AMP_19V_ON
AMP_3.3V_ON
+3.3V_AMP
R507
10K
AMP
Q500
2N3904S
AMP
E
B
C
C509
1uF
25V
OPT C510
2.2uF
25V
AMP
Q501
SSM3J332R
AMP
S
G
D
R520
4.7K
OPT
C555
2.2uF
25V
AMP
C554
2.2uF
25V
AMP
C511
2.2uF
25V
AMP
C513
2.2uF
25V
AMP
R546
1K
R549
10
R547
1K
R548
10 HP_ROUT_HP
HP_LOUT_HP
R542
100
C549
2200pF
50V
C550
2200pF
50V
R543
100
C543
1uF
10V
OPT
Q504
2N3904S
E
B
C
C542
2.2uF
10V
R540
1K
+3.3V_NORMAL
R535
4.7K
+3.3V_NORMAL
R538
4.7K
OPT
C548
10uF
10V
R539
10K
R534
10K
OPT
+3.3V_HP_AMP
R541
0
OPT
HP_OFF
R531 AMP
0
1/8W
5%
R545 AMP
0
1/8W
5%
R530 AMP
0
1/8W
5%
R544 AMP
0
1/8W
5%
Q505
SSM3J332R
S
G
D
Q503
SSM3J332R
LINEOUT_AMP
S
G
D
L500
BLM15PX121SN1
AMP
L504
10.0uH
AMP
L502
10.0uH
AMP
L501
10.0uH
AMP
L503
10.0uH
AMP
R557
10
AUD_LINE_OUT_R
R554
1K
C551
2200pF
50V
JP510
VR504
R556
10
C540
2200pF
50V
R558
100
VR505 R555
1K
AUD_LINE_OUT_L
R559
100
JP512
JP513
JK501
PJ-3517HAR-3-BL
T_SPRING
E_SPRING
R_SPRING
SHIELD_PLATE
JK500
PJ-3517HAGR
6B T_TERMINAL2
8SHIELD_PLATE
7B B_TERMINAL2
5T_SPRING
4R_SPRING
7A B_TERMINAL1
6A T_TERMINAL1
3E_SPRING
R528
4.7K
C536
10pF
50V
C535
180pF
R524
10K
L509
120-ohm
BLM15PX121SN1
R527
43K
1% R536
20K
C541
10pF
50V
C537
1uF
10V
R532
43K
1%
IC501
TPA6138A2
3
OUTR
2
-INR
4
GND_1
1
+INR
6
VSS
5
MUTE
7
CN 8CP
9VDD
10 GND_2
11 UVP
12 OUTL
13 -INL
14 +INL
C547
0.1uF
16V
C545
1uF
10V
HP_LOUT_HP
C534
1uF
10V
HP_MUTE
HP_LOUT_MAIN
+3.3V_HP_AMP
R526
20K
C538
1uF
10V
+3.3V_HP_AMP
R537
10K
R525
0
HP_ROUT_MAIN
HP_ROUT_HP
C552
1uF
10V
C546
180pF
C561
180pF
LINEOUT_AMP
C563
1uF
10V
LINEOUT_AMP
AUD_LINE_OUT_AMP_R
AUD_LINE_OUT_R
R551
0
LINEOUT_AMP
R563
10K
LINEOUT_AMP
+3.3V_AMP
C558
1uF
10V
LINEOUT_AMP
R552
20K
LINEOUT_AMP
+3.3V_AMP
AUD_LINE_OUT_L
AMP_nMUTE
C539
1uF
10V
LINEOUT_AMP
AUD_LINE_OUT_AMP_L
C560
1uF
10V
LINEOUT_AMP
C562
0.1uF
16V
LINEOUT_AMP
IC502
TPA6138A2
LINEOUT_AMP
3
OUTR
2
-INR
4
GND_1
1
+INR
6
VSS
5
MUTE
7
CN 8CP
9VDD
10 GND_2
11 UVP
12 OUTL
13 -INL
14 +INL
R561
43K
1%
LINEOUT_AMP
C557
1uF
10V
LINEOUT_AMP
C559
10pF
50V
LINEOUT_AMP
R562
20K
LINEOUT_AMP
R553
43K
1%
LINEOUT_AMP
L505
120-ohm
LINEOUT_AMP
BLM15PX121SN1
R550
10K
LINEOUT_AMP C553
180pF
LINEOUT_AMP
C556
10pF
50V
LINEOUT_AMP
R560
4.7K
LINEOUT_AMP
AUD_LINE_OUT_AMP_R
AUD_LINE_OUT_AMP_L
R564
0
LINEOUT_AMP
R565
0
LINEOUT_NORMAL
R566
0
LINEOUT_AMP
R567
0
LINEOUT_NORMAL
SPK_L-
SPK_L+
SPK_R+
SPK_R-
H/P OUT
HEADPHONE JACK
5 9
34UC79G
AMP / HP
2016.03.08
AMP_3.3V
AMP_19V
Speaker AMP
HP_AMP_3.3V
LINE OUT
LINE-OUT JACK
10K->20K
HYUNSEUNG.KU 15.08.25
10K->20K
Headphone AMP
HYUNSEUNG.KU 15.08.25
HYUNSEUNG.KU 15.08.25
Line out AMP
10K->20K
HYUNSEUNG.KU 15.08.25
10K->20K
Copyright ⓒ 2016 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only

THERMAL THERMAL
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
R740
33
R714
33
C709
0.1uF
16V
D701
100V
BR210
R722
200
1%
R743
1K
R737
100
C705
1uF
25V
Q700
AOD2922
G
D
S
C725
1uF
25V
C713
0.1uF
16V
C731
1uF
25V
C716
1uF
50V
C727
4.7uF
25V
R728
510K
1/8W
1%
R716
100K
C704
4700pF
50V
C721
1000pF
50V
R708
220K
1%
+19V
C734
10uF
10V
C703
0.1uF
50V
+19V
C724
4700pF
50V
C710
4.7uF
25V
R703
12K
1/8W
1%
R748
200
1%
C702
0.1uF
16V
R752
100K
R705
15K
C723
0.1uF
50V
R734
220K
1%
C728
0.47uF
50V
R720
75K
1%
R741
10K
R718
1K
C714
10uF
10V ZD701
5.6V
WLED_PDIM
R701
510K
1/8W
1%
R723
100
1%
C719
22uF
63V
R706
0
5V_ST_ON
C726
0.1uF
50V
R727
100
C732
4.7uF
25V
+5V_STANDBY
R700
100
C739
22uF
63V
R726
100K
C715
4.7uF
25V
R749
100
1%
+19V
R750
0.1
1W
1%
R713
0
NO_MOTION
R702
0
R730
100K
R725
100K
C735
4.7uF
25V
C738
10uF
10V
OPT
R719
0
MOTION
C700
1uF
16V
OPT
D700
100V
BR210
+19V
R729
12K
1/8W
1%
R736
51K
R717
1K
L704
10uH
C712
4.7uF
25V
+19V
R747
5.6K
1%
R744
1K
L702
33uH
C729
0.1uF
16V
L703
BLM18PG121SN1D
IC700
MP3378E
3
ISET
2
OSC
4
ADIM
1
GND1
6
LED3
5
LED4
7
LED2
8
LED1
9
OVP
10
NC_1
11
NC_2
12
FB
13
EN2
14
VCC2 15 VIN2
16 SW
17 GND2_1
18 GND2_2
19 AGND
20 BST
21 SYNC
22 ISENSE
23 GATE
24 VIN1
25 VCC1
26 COMP
27 EN1
28 PWM
29
[EP]GND
WLED_ADIM
C736
1uF
50V
ZD700
5.6V
OPT
R746
18K
1%
WLED_ENABLE
R711
100
IC701
MP3378E
3
ISET
2
OSC
4
ADIM
1
GND1
6
LED3
5
LED4
7
LED2
8
LED1
9
OVP
10
NC_1
11
NC_2
12
FB
13
EN2
14
VCC2 15 VIN2
16 SW
17 GND2_1
18 GND2_2
19 AGND
20 BST
21 SYNC
22 ISENSE
23 GATE
24 VIN1
25 VCC1
26 COMP
27 EN1
28 PWM
29
[EP]GND
WLED_ENABLE
R721
14K
1%
R731
56K
R710
51K
R724
0.1
1W
1%
C722
0.1uF
16V
WLED_ADIM
WLED_PDIM
R715
10K
+3.3V_NORMAL
C717
1uF
50V
C720
1uF
16V
OPT
+19V
C733
0.1uF
16V
C701
1000pF
50V
+19V
R712
270
1%
R742
100K
C737
1uF
50V
R732
0
C707
4.7uF
25V
C706
0.1uF
50V
R738
270
1%
R707
2.7K
1% Q701
AOD2922
G
D
S
C708
0.47uF
50V
R739
0
NO_MOTION
R751
100K
R745
0
MOTION
C711
1uF
25V
L700
BLM18PG121SN1D
C718
10uF
10V
OPT
L705
33uH
R704
100K
OPT
R733
2.7K
1% +19V
C730
4.7uF
25V
L701
10uH
JP709 JP708 JP707 JP701 JP702 JP703 JP704 JP705 JP706 JP700
P701
12507WR-06L
1 2 3 4 5 6
7
P702
12507WR-06L
1 2 3 4 5 6
7
C740
22uF
63V
OPT
C741
22uF
63V
OPT
R709
2K
1%
R735
2K
1%
9
34UC79G
LED Driver IC
2016.03.08
7
Curent ==> X5R Type.
High : 1.5V
Switching Frequency set : 306KHZ
Internal RC Filter [ under 20kHz ]
Setting: 3.37V(=0.8(1+18K/5.6K)
Min 0.4V / Max 1.5V
20160305 development item
Switching Frequency set : 306KHZ
20160305 development item
Idc : 3.4A
Setting: 5.08V(=0.8(1+75K/14K)
LED Driver
Min 0.4V / Max 1.5V
OVP Setting : 53.5V
Internal RC Filter [ under 20kHz ]
LED Current : 110mA
Curent ==> X5R Type.
OCP = 3A
OVP Setting : 53.5V
High : 1.5V
LED Current : 110mA
Idc : 3.4A
OCP = 3A
Copyright ⓒ 2016 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only