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 th e cir cuitry 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 MΩ and 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 exp ose d metallic par t. 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.
CAUTION: Before servicing receivers covered by this service
manual and its supplements and addenda, read and follow the
SAFETY PRECAUTIONS on page 3 of this publication.
NOTE: If unforeseen circumstances create conict between the
following servicing precautions and any of the safety precautions
on page 3 of this publication, always follow the safety precautions.
Remember: Safety First.
General Servicing Precautions
1. Always unplug the receiver AC power cord from the AC power
source before;
a. Removing or reinstalling any component, circuit board mod-
ule or any other receiver assembly.
b. Disconnecting or reconnecting any receiver electrical plug or
other electrical connection.
c. Connecting a test substitute in parallel with an electrolytic
capacitor in the receiver.
CAUTION: A wrong part substitution or incorrect polarity
installation of electrolytic capacitors may result in an explosion hazard.
2. Test high voltage only by measuring it with an appropriate
high voltage meter or other voltage measuring device (DVM,
FETVOM, etc) equipped with a suitable high voltage probe.
Do not test high voltage by "drawing an arc".
3. Do not spray chemicals on or near this receiver or any of its
assemblies.
4. Unless specied otherwise in this service manual, clean
electrical contacts only by applying the following mixture to the
contacts with a pipe cleaner, cotton-tipped stick or comparable
non-abrasive applicator; 10 % (by volume) Acetone and 90 %
(by volume) isopropyl alcohol (90 % - 99 % strength)
CAUTION: This is a ammable mixture.
Unless specied otherwise in this service manual, lubrication of
contacts in not required.
5. Do not defeat any plug/socket B+ voltage interlocks with which
receivers covered by this service manual might be equipped.
6. Do not apply AC power to this instrument and/or any of its
electrical assemblies unless all solid-state device heat sinks are
correctly installed.
7. Always connect the test receiver ground lead to the receiver
chassis ground before connecting the test receiver positive
lead.
Always remove the test receiver ground lead last.
8. Use with this receiver only the test xtures specied in this
service manual.
CAUTION: Do not connect the test xture ground strap to any
heat sink in this receiver.
Electrostatically Sensitive (ES) Devices
Some semiconductor (solid-state) devices can be damaged easily by static electricity. Such components commonly are called
Electrostatically Sensitive (ES) Devices. Examples of typical ES
devices are integrated circuits and some eld-effect transistors
and semiconductor “chip” components. The following techniques
should be used to help reduce the incidence of component damage caused by static by static electricity.
1. Immediately before handling any semiconductor component or
semiconductor-equipped assembly, drain off any electrostatic
charge on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging
wrist strap device, which should be removed to prevent potential shock reasons prior to applying power to the unit under test.
2. After removing an electrical assembly equipped with ES
devices, place the assembly on a conductive surface such as
aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ES
devices.
4. Use only an anti-static type solder removal device. Some solder
removal devices not classied as “anti-static” can generate
electrical charges sufcient to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate
electrical charges sufcient to damage ES devices.
6. Do not remove a replacement ES device from its protective
package until immediately before you are ready to install it.
(Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or
comparable conductive material).
7. Immediately before removing the protective material from the
leads of a replacement ES device, touch the protective material
to the chassis or circuit assembly into which the device will be
installed.
CAUTION: Be sure no power is applied to the chassis or circuit,
and observe all other safety precautions.
8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the
brushing together of your clothes fabric or the lifting of your
foot from a carpeted oor can generate static electricity sufcient to damage an ES device.)
General Soldering Guidelines
1. Use a grounded-tip, low-wattage soldering iron and appropriate
tip size and shape that will maintain tip temperature within the
range or 500 °F to 600 °F.
2. Use an appropriate gauge of RMA resin-core solder composed
of 60 parts tin/40 parts lead.
3. Keep the soldering iron tip clean and well tinned.
4. Thoroughly clean the surfaces to be soldered. Use a mall wirebristle (0.5 inch, or 1.25 cm) brush with a metal handle.
Do not use freon-propelled spray-on cleaners.
5. Use the following unsoldering technique
a. Allow the soldering iron tip to reach normal temperature.
(500 °F to 600 °F)
b. Heat the component lead until the solder melts.
c. Quickly draw the melted solder with an anti-static, suction-
type solder removal device or with solder braid.
CAUTION: Work quickly to avoid overheating the circuit
board printed foil.
6. Use the following soldering technique.
a. Allow the soldering iron tip to reach a normal temperature
(500 °F to 600 °F)
b. First, hold the soldering iron tip and solder the strand against
the component lead until the solder melts.
c. Quickly move the soldering iron tip to the junction of the
component lead and the printed circuit foil, and hold it there
only until the solder ows onto and around both the component lead and the foil.
CAUTION: Work quickly to avoid overheating the circuit
board printed foil.
d. Closely inspect the solder area and remove any excess or
Some chassis circuit boards have slotted holes (oblong) through
which the IC leads are inserted and then bent at against the circuit foil. When holes are the slotted type, the following technique
should be used to remove and replace the IC. When working with
boards using the familiar round hole, use the standard technique
as outlined in paragraphs 5 and 6 above.
Removal
1. Desolder and straighten each IC lead in one operation by
gently prying up on the lead with the soldering iron tip as the
solder melts.
2. Draw away the melted solder with an anti-static suction-type
solder removal device (or with solder braid) before removing
the IC.
Replacement
1. Carefully insert the replacement IC in the circuit board.
2. Carefully bend each IC lead against the circuit foil pad and
solder it.
3. Clean the soldered areas with a small wire-bristle brush.
(It is not necessary to reapply acrylic coating to the areas).
1. Remove the defective transistor by clipping its leads as close
as possible to the component body.
2. Bend into a "U" shape the end of each of three leads remaining
on the circuit board.
3. Bend into a "U" shape the replacement transistor leads.
4. Connect the replacement transistor leads to the corresponding
leads extending from the circuit board and crimp the "U" with
long nose pliers to insure metal to metal contact then solder
each connection.
Power Output, Transistor Device
Removal/Replacement
1. Heat and remove all solder from around the transistor leads.
2. Remove the heat sink mounting screw (if so equipped).
3. Carefully remove the transistor from the heat sink of the circuit
board.
4. Insert new transistor in the circuit board.
5. Solder each transistor lead, and clip off excess lead.
6. Replace heat sink.
Diode Removal/Replacement
1. Remove defective diode by clipping its leads as close as possible to diode body.
2. Bend the two remaining leads perpendicular y to the circuit
board.
3. Observing diode polarity, wrap each lead of the new diode
around the corresponding lead on the circuit board.
4. Securely crimp each connection and solder it.
5. Inspect (on the circuit board copper side) the solder joints of
the two "original" leads. If they are not shiny, reheat them and if
necessary, apply additional solder.
3. Solder the connections.
CAUTION: Maintain original spacing between the replaced
component and adjacent components and the circuit board to
prevent excessive component temperatures.
Circuit Board Foil Repair
Excessive heat applied to the copper foil of any printed circuit
board will weaken the adhesive that bonds the foil to the circuit
board causing the foil to separate from or "lift-off" the board. The
following guidelines and procedures should be followed whenever
this condition is encountered.
At IC Connections
To repair a defective copper pattern at IC connections use the
following procedure to install a jumper wire on the copper pattern
side of the circuit board. (Use this technique only on IC connections).
1. Carefully remove the damaged copper pattern with a sharp
knife. (Remove only as much copper as absolutely necessary).
2. carefully scratch away the solder resist and acrylic coating (if
used) from the end of the remaining copper pattern.
3. Bend a small "U" in one end of a small gauge jumper wire and
carefully crimp it around the IC pin. Solder the IC connection.
4. Route the jumper wire along the path of the out-away copper
pattern and let it overlap the previously scraped end of the
good copper pattern. Solder the overlapped area and clip off
any excess jumper wire.
At Other Connections
Use the following technique to repair the defective copper pattern
at connections other than IC Pins. This technique involves the
installation of a jumper wire on the component side of the circuit
board.
1. Remove the defective copper pattern with a sharp knife.
Remove at least 1/4 inch of copper, to ensure that a hazardous
condition will not exist if the jumper wire opens.
2. Trace along the copper pattern from both sides of the pattern
break and locate the nearest component that is directly connected to the affected copper pattern.
3. Connect insulated 20-gauge jumper wire from the lead of the
nearest component on one side of the pattern break to the lead
of the nearest component on the other side.
Carefully crimp and solder the connections.
CAUTION: Be sure the insulated jumper wire is dressed so the
it does not touch components or sharp edges.
Fuse and Conventional Resistor
Removal/Replacement
1. Clip each fuse or resistor lead at top of the circuit board hollow
stake.
2. Securely crimp the leads of replacement component around
notch at stake top.
This spec. sheet applies to LA42B Chassis applied LED TV all
models manufactured in TV factory
2. Specification
(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 ±5 ºC of temperature and 65±10% of relative humidity if
there is no specific designation
(4) The input voltage of the receiver must keep 100~240V,
50/60Hz
(5) At first Worker must turn on the SET by using Power Only
key.
(6) The receiver must be operated for about 5 minutes prior to
the adjustment when module is in the circumstance of over
15
ºC
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
4. MAIN PCBA Adjustments
4.1. ADC Calibration
- An ADC cali bra tion is not necessary because MA IN SoC
(LGExxxx) is already calibrated from IC Maker
- If it needs to adjust manually, refer to appendix.
4.2. MAC Address, ESN Key and Widevine
Key download
4.2.1. Equipment & Condition
1) Play file: keydownload.exe
4.2.2. Communication Port connection
1) Key Write: Com 1,2,3,4 and 115200 (Baudrate)
2) Barcode: Com 1,2,3,4 and 9600 (Baudrate)
4.2.3. Download process
1) Select the download items.
2) Mode check: Online Only
3) Check the test process
- US, C anada m odels : DETEC T -> M AC_ WR IT E ->
WIDEVINE_WRITE
- Korea, Mexico m odels: DET ECT -> MAC_WRI TE ->
WIDEVINE_WRITE
4) Play : START
5) Check of result: Ready, Test, OK or NG
4.2.4. Communication Port connection
1) Connect: PCBA Jig -> RS-232C Port == PC -> RS-232C
5.1.1.1. 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) Adj. condition: normal temperature
- Surrounding Temperature: 25±5 °C
- Warm-up time: About 5 Min
- Surrounding Humidity: 20% ~ 80%
- Before White balance adjustment, Keep power on status,
don’t power off
5.1.1.2. 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 10cm and perpendicular of the module surface
(80°~ 100°)
(3) Aging time
- After Aging Start, Keep the Power ON sta tus during 5
Minutes.
- In case of LCD, Back-light on should be checked using no
(1) Check the POWER CABLE and SIGNAL CABE insertion
condition
8.2. GND & HI-POT auto-check
(1) Pallet moves in the station. (POWER CORD / AV CORD is
tightly inserted)
(2) Connect the AV JACK Tester.
(3) Controller (GWS103-4) on.
(4) GND Test (Auto)
- If Test is failed, Buzzer operates.
- If Test is passed, execute next process (Hi-pot test).
(Remove A/V CORD from A/V JACK BOX)
(5) HI-POT test (Auto)
- If Test is failed, Buzzer operates.
- If Test is passed, GOOD Lamp on and move to next process
automatically.
9. USB S/W Download
(optional, Service only)
(1) Put the USB Stick to the USB socket
(2) Automatically detecting update file in USB Stick
- If your downloaded program version in USB Stick is lower
than that of TV set, it didn’t work. Otherwise USB data is
automatically detected.
(3) Show the message “Copying files from memory”
(4) Updating is staring.
8.3. Checkpoint
(1) Test voltage
- GND: 1.5KV/min at 100mA
- SIGNAL: 3KV/min at 100mA
(2) TEST time: 1 second
(3) TEST POINT
- GND Test = POWER CORD GND and SIGNAL CABLE GND.
- Hi-pot Test = POWER CORD GND and LIVE & NEUTRAL.
(4) LEAKAGE CURRENT: At 0.5mArms
(5) Updating Completed, The TV will restart automatically
(6) If your TV is turned on, check your updated version and
Tool option.
* 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, TOOL OPTION setting is needed again.
(1) Push "IN-START" key in service remote controller.
(2) Select "Tool Option 1" and Push “OK” button.
(3) Punch in the number. (Each model has their number.)
CH14)
(2) Adj. Computer (During auto adj., RS-232C protocol is
needed)
(3) Adjust Remocon
(4) Vi deo Sig nal Generator MSP G-925F 720p/216 -Gray
(Model: 217, Pattern: 78)
10.1.3. Adjustment
(1) Set TV in Adj. mode using POWER ON
(2) Zero Calibrate the probe of Color Analyzer, then place it on
the center of LCD module within 10cm of the surface.
(3) Press ADJ key -> EZ adjust using adj. R/C -> 6. White-
Balance then press the cursor to the right (KEY►).
When KEY(►) is pressed 216 Gray internal pattern will be
displayed.
(4) One of R Gain / G Gain / B Gain should be fixed at 192,
and the rest will be lowered to meet the desired value.
(5) Adj. is performed in COOL, MEDIUM, WARM 3 modes of
color temperature.
▪ If internal pattern is not available, use RF input. In EZ Adj.
menu 6.White Balance, you can select one of 2 Test-pattern:
ON, OFF. Default is inner(ON). By selecting OFF, you can
adjust using RF signal in 216 Gray pattern.
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 X-RADIATION, Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
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.
M14-Peripheral
MID_LG1311
M14 Symbol A
2013.04.04
1
31
Page 26
PAGE 2
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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
M14-Display In/Out
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
TP202
TP203
TP204
TP205
TP206
TP207
TP208
TP209
TP210
TP211
TP212
TP213
TP214
TP215
TP221
TP218
TP219
TP220
DEBUG
+3.3V_NORMAL
SW201
JTP-1127WEM
12
3
4
For ISP
R223
3.3K
MID_LG1311
M14 Symbol B
2013.04.04
2
31
Page 27
PLACE AT JACK SIDE
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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.
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.
MID_LG1311
M14 DDR3-M0
2013.04.04
4
31
Page 29
PAGE 5
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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.
MID_LG1311
M14 DDR3-M1
2013.04.04
5
31
Page 30
PAGE 6
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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.
11/05/31
MID_LG1311
VCC & GND
2013.04.04
6
31
Page 31
+3.5V_ST
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
+3.3V_NORMAL
RL_ON
+3.5V_ST
+12V
C2306
0.1uF
L/DIM0_MOSI
R2301
MMBT3906(NXP)
AMOTECH CO., LTD.
L2304
UBW2012-121F
C2307
0.1uF
16V
UBW2012-121F
10K
VA23001
L2303
R2300
10K
50V
5.6V
Q2300
2
5V
ZD2303
1
PWR ON
3.5V
3.5V
L/DIM0_MOSI
POWER_WAFER_18PIN
P2300
SMAW200-H18S5
1
1
3
3
5
5
GND
7
7
24V
10
9
9
10
GND
11
12
12
11
12V
13
14
13
14
12V
15
16
16
15
GND
17
18
18
17
GND
20
19
GND
21
22
19
23
24
25
.
SMAW200-H24S5
P2301
POWER_WAFER_24PIN
INV ON
2
2
PDIM#1
4
4
3.5V
6
6
PDIM#2
8
8
24V
GND
12V
24V
GND
GND
L/DIMO_VS
L/DIM0_SCLK
L2306
UBW2012-121F
C2316
0.1uF
50V
3
R2309
100
+24V
R2310
1K
R2354
4.7K
OPT
OPT
R2356
1K
R2355
4.7K
OPT
INV_CTL
PWM_DIM
PWM_DIM2
L/DIM0_VS
L/DIM0_SCLK
+3.3V - eMMC 4.41(LG1311-A0)
+3.3V_NORMAL
L2302
BLM18PG121SN1D
C2305
0.1uF
16V
C2300
22uF
10V
3.3V_EMMC
+1.8V - eMMC 4.51(LG1311-B0)
+3.3V_NORMAL
IC2306
AZ1117EH-ADJTRG1
OUTIN
ADJ/GND
+12V
+3.3V_NORMAL
L2300
BLM18PG121SN1D
C2302
C2303
10uF
0.1uF
16V
16V
R23 03
68K
1/1 6W
1%
R2304
10K
R1
R2
R23 05
22K
1/1 6W
1%
POWER_ON/OFF1
R2302
5.1K
1/16W
1%
C2304
100pF
3.3V_DCDC_RHOM
3.3V_DCDC_TI
C2312-*1
3300pF
50V
50V
VFB
VREG5
IC2300-*1
TPS54327DDAR
EN
1
2
3
SS
4
3.3V_DCDC_TI
THERMAL
[EP]GND
VIN
8
VBST
9
7
SW
6
GND
5
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.
DVDD18_EMMC
R2347
1
75
1%
1/16W
R2357
C2301
10uF
33
C2310
1uF
10V
1%
1/16W
VREG
C2312
2200pF
50V
3.3V_DCDC_RHOM
R2358
BD9D320EFJ
EN
1
FB
2
3
3.3V_DCDC_ROHM
SS
4
IC2300
THERMAL
3A
10V
[EP]FIN
VIN
8
BOOT
9
7
SW
6
GND
5
Vout=0.765*(1+R1/R2)
C2308
10uF
10V
0.1uF
C2313
OPT
2.5V
D2302
+3.3V_NORMAL
5V
ZD2300
C2315
22uF
10V
OPT
16V
L2301
2uH
C2314
22uF
10V
PANEL_CTL
+3.3V_NORMAL
+5V_NORMAL
POWER_ON/OFF2_1
POWER_ON/OFF2_3
+1.1V_VDD
C2317
22uF
10V
OPT
2.5V
ZD2301
PANEL_POWER
Q2302 Change: Diodes --> NXP, 131118
+12V
Q2302
C2333
10uF
16V
PMV48XP
S
G
D
L2313
UBW2012-121F
R2314
10K
C2331
0.1uF
50V
R2317
R2318
5.1K
B
30K
C
Q2301
MMBT3904(NXP)
E
+2.5V
AP7173-SPG-13 HF(DIODES)
R2312
10K
C2327
10uF
10V
IC2302
[EP]
IN
1
PG
2
VCC
1.5A
3
EN
4
9
THERMAL
OUT
8
FB
7
SS
6
5
C2337
2200pF
GND
50V
Vout=0.8*(1+R1/R2)
+1.1V_CORE
R2311
C2318
22uF
10V
10K
1%
C2320
0.1uF
16V
C2319
22uF
10V
L2305
1uH
C2321
1000pF
50V
R2307 1K
R2306
2K
1/16W
5%
R2308
3.3
1/10W
C2322
470pF
50V
R2351
5%
1%
0.1uF
C2323
4.7
91K
1/1 6W
R23 15
27K
1/1 6W
RF
R23 13
PGOOD
EN
16V
VBST
NC_1
SW_1
SW_2
SW_3
SW_4
Vout=0.6*(1+R1/R2)
POWER UP SEQUENCE
3.3V->5V->1.5V->1.1V->2.5V
[EP]
1
THERMAL
2
29
3
IC2301
4
TPS53513RVER
5
6
7
8
8A
9
10
PGND_111PGND_212PGND_313PGND_414PGND_5
R2316
39K
1/16W
5%
TRIP26NC_327GND128GND2
24VO25
FB
23
GND
22
MODE
21
VREG
20
VDD
19
NC_2
18
VIN_3
17
VIN_2
16
VIN_1
15
PANEL_VCC
R2346
3.3K
LVDS_DISCHARGE
1%
R1
4.3 K
1/1 6W
R23 22
R2
1%
R23 212K1/1 6W
R1
R2319
9.1K
R2
R2320
10.7K
C2325
2200pF
50V
C2347
0.1uF
50V
+2.5V_NORMAL
C2346
10uF
10V
1/16W
1%
1/16W
1%
1%
20K
R2323
1/16W
C2357
0.1uF
16V
C2326
1uF
10V
OPT
L2307
C2328
10uF
16V
5V
ZD2304
+12V
C2332
10uF
16V
P_DET_BOTH_12_24V
R2349-*1
100
P_DET_BOTH_24_3.5V
R2336-*1
100K
P_DET_BOTH_24_3.5V
C2356-*1
0.1uF
50V
P_DET_BOTH_24_3.5V
P_DET_BOTH_12_24V
P_DET_BOTH_12_24V
P_DET_BOTH_12_24V
Power_DET
P_DET_BOTH_12_3.5V
P_DET_BOTH_12_3.5V
On-semi
P_DET_BOTH_12_3.5V_DIODES
IC2308-*1
APX803D29
VCC
RESET
3
2
1
GND
+12V
R2325-*1
2.7K
1%
R2326-*1
1.2K
1%
P_DET_BOTH_24_3.5V
P_DET_BOTH_24_3.5V
P_DET_ONLY_12V
P_DET_ONLY_12V
R2325
2.7K
1%
R2326
1.2K
1%
+24V
+3.5V_ST
R2330
0
5%
P_DET_BOTH_24_3.5V
+3.5V_ST
R2327
8.2K
P_DET_BOTH_12_3.5V
R2328
1.5K
1%
R2348
0
P_DET_BOTH_12_3.5V
DDR MAIN 1.5V
10K
C2353
R2324
0.1uF
[EP]FIN
1
THERMAL
2
17
IC2303
3
BD9A300MUV
4
1.5V_DCDC_ROHM
5
6
FB
AGND8MODE
3A
16V
+3.5V_ST
L2308
PVIN_1
C2340
C2339
0.1uF
10uF
16V
10V
THERMAL
17
IC2303-*1
TPS54319TRE
5
AGND
7
COMP
BOOT14PWRGD15EN16VIN_3
13
PH_3
12
PH_2
11
PH_1
10
SS/TR
9
8
RT/CLK6VSENSE
1.5V_DCDC_TI
R2329-*1
15K
1/16W
5%
C2344-*1
4700pF50V
1.5V_DCDC_TI
1.5V_DCDC_TI
EP[GND]
VIN_1
1
VIN_2
2
GND_1
3
GND_2
4
PVIN_2
PGND_1
PGND_2
Vout=0.8*(1+R1/R2)
+5.0V normal & USB
C2334
2200pF
R23 40 16 K 1 %
R23 41150 K 1%
RSET2
27
IC2304
6A
9EN10
SW_OUT211SW_OUT1
10K
+5V_USB_2
POWER_ON/OFF2_4
50V
R2342
10K
COMP25RLIM26RSET1
12
SW_EN213SW_EN1
USB_CTL2
USB_CTL3
+5V_USB_3
MID_LG1311
+24V
L2310
120-ohm
C2309
10uF
35V
OPT
C2311
10uF
35V
R23 35 16 K 1 %
[EP]
AGND
28
VIN_1
1
THERMAL
VIN_2
2
VIN_3
C2329
0.1uF
50V
PGND_1
PGND_2
PGND_3
1uF
25V
C23 24
C2330
0.0068uF
50V
29
3
4
SN1302001(TPS65286RHDR)
5
6
V7V
7
8
MODE/SYNC
R2339
R2327-*1
8.2K
R2328-*1
1.5K
1%
R2325-*2
2.7K
1%
R2326-*2
1.2K
1%
RESET IC_ROHM
BD48K28G
VDD
3
C2355
0.1uF
16V
P_DET_BOTH_12_3.5V
P_DET_BOTH_12_3.5V_ROHM
BD48K28G
VDD
3
C2356
0.1uF
50V
C2341
0.1uF
1.5V_DCDC_TI
16V
BOOT14PGD15EN16AVIN
13
SW_3
12
SW_2
11
3A
SW_1
10
SS
9
7
R2329
8.2K
1/16W1%
1.5V_DCDC_RHOM
OPT
C2335
100pF
50V
LX_3
21
LX_2
20
LX_1
19
BST
18
SW_IN2
17
SW_IN1
16
NFAULT1
15
R2331
C2336
0.047uF
25V
ITH
22SS23FB24
14
NFAULT2
Vout=0.6*(1+R1/R2)
/USB_OCD2
5.1V:R1-51K, R2-6.8K
POWER
P_DET_BOTH_12_24V
R2336-*2
100K
R2349-*2
100
P_DET_BOTH_12_24V
R2337
100K
IC2307
VOUT
2
1
GND
R2336
100K
IC2308
VOUT
2
1
GND
POWER_ON/OFF2_2
NR5040T2R2N
L2309
2.2uH
C2342
0.01uF
50V
330K1/16W5%
C2344
2700pF50V
1.5V_DCDC_RHOM
C2343
82pF
50V
L2311
4.7uH
C2338
0.047uF
25V
5%
100K
R2344
1/16W
/USB_OCD3
P_DET_BOTH_12_24V
R2350
100
R2349
100
P_DET_BOTH_12_3.5V
C2345
C2349
22uF
22uF
10V
10V
R2
1%
6.8K
1/16W
R2345
C2348
22uF
10V
R1
1%
51K
1/16W
R2352
L2311 Change, 131120
for Currnet UP
C2350
1uF
5%
10V
100K
R2353
1/16W
PAGE 8
C2356-*2
0.1uF
50V
RESET IC_DIODES
IC2307-*1
APX803D29
VCC
+3.5V_ST
R1
R2
C2351
22uF
10V
R2338
10K
OPT
+1.5V_DDR
3
POWER_DET
C2365
0.1uF
16V
not to RESET at 8kV ESD
ST_3.5V-->3.5V
1/1 6W
1/1 6W
16K
R23 32
1.5V_DCDC_TI
18K
R23 33
C2352
10uF
10V
C2354
100pF
50V
1%
1%
+5V_NORMAL
2013.03.22
2
1
GND
24V-->3.48V
12V-->3.58V
2.5V
ZD2302
OPT
8
RESET
31
Page 32
Renesas MICOM
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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.
POWER_DET
POWER_ON/OFF1
WOL/ETH_POWER_ON
LED_R
LED_R
WOL_CTL
INV_CTL
SOC_RESET
SOC_TX
SOC_RX
EDID_WP
AMP_MUTE
EDID_WP
CAM_CTL
CAM_CTL
CEC_REMOTE
MID_LG1311
MICOM
D3000
BAT54_SUZHO
For CEC
R3033
27K
+3.5V_ST
G
D
S
Q3001
RUE003N02
R3034
120K
HDMI_CEC
2013.03.22
9
31
Page 33
BODY_SHIELD
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
20
EAG63530101
JK3202
DAADR019A
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
HP_DET
5V
GND
DDC_DATA
DDC_CLK
ARC
CE_REMOTE
CK-
CK_GND
CK+
D0-
D0_GND
D0+
D1-
D1_GND
D1+
D2-
D2_GND
D2+
VA3206
ESD_HDMI
VA3208
ESD_HDMI
CEC_REMOTE
R3265
100K
VA3213
ESD_HDMI
33
R3250
AR3200
33
1/16W
ESD_HDMI
VA3207
HDMI_HPD_1
DDC_SCL_1
DDC_SDA_1
D3210
IP4294CZ10-TBR
1
2
3
4
5
ESD_HDMI_TMDS
D3211
IP4294CZ10-TBR
1
2
3
4
5
ESD_HDMI_TMDS
HDMI1 With ARC
OPT
OPT
R3248
1K
R3249
3.9K
10
9
8
7
6
PAGE 10
HDMI_HPD_4
R3261
0
5V_HDMI_1
1%
R3204
100K
5V_HDMI_4
C3203
C3228
10uF
22uF
10V
10V
OPT
VA3215
ESD_HDMI
BODY_SHIELD
HP_DET
5V
GND
DDC_DATA
DDC_CLK
NC
CE_REMOTE
CK-
CK_GND
CK+
D0-
D0_GND
D0+
D1-
D1_GND
D1+
D2-
D2_GND
D2+
5V_HDMI_4
CEC_REMOTE
VA3216
ESD_HDMI
VA3210
ESD_HDMI
GND
ARC
C3202
SPDIF_OUT_ARC
1uF
10V
OPT
C3226
0.1uF
16V
CK-_HDMI1
CK+_HDMI1
D0-_HDMI1
D0+_HDMI1
10
9
8
7
6
D1-_HDMI1
D1+_HDMI1
D2-_HDMI1
D2+_HDMI1
20
EAG63530101
DAADR019A
JK3203
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
100K
R3267
VA3212
ESD_HDMI
D3215
IP4294CZ10-TBR
1
2
3
4
5
ESD_HDMI_TMDS
D3214
IP4294CZ10-TBR
1
2
3
4
5
ESD_HDMI_TMDS
+12V
OPT
AR3202
33
1/16W
VA3211
ESD_HDMI
10
9
8
7
6
10
9
8
7
6
R3262
1K
R3263
G
DDC_SCL_4
DDC_SDA_4
CK-_HDMI4
CK+_HDMI4
D0-_HDMI4
D0+_HDMI4
D1-_HDMI4
D1+_HDMI4
D2-_HDMI4
D2+_HDMI4
820
D
S
Q3205
PMBFJ177
VA3217
5.6V
+5V_NORMAL
C3201
0.1uF
MHL_DET
R3243
1K
1/16W
5%
C3223
0.047uF
25V
D3201
A1
C
A2
B
Q3200
MMBT3904(NXP)
R3201
10K
+3.5V_ST
R3246
10K
C
E
R3202
330K
R3247
10K
B
VIN
1
GND
2
EN
3
E
MMBT3906(NXP)
Q3201
C
IC3201
BD2242G
6
5
4
MHL_DET
VOUT
ILIM
OC
D3202
MBR230LSFT1G
30V
R3200 16K
HDMI3 With MHL
BODY_SHIELD
20
EAG63530101
JK3200
DAADR019A
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
HP_DET
5V
GND
DDC_DATA
DDC_CLK
NC
CE_REMOTE
CK-
CK_GND
CK+
D0-
D0_GND
D0+
D1-
D1_GND
D1+
D2-
D2_GND
D2+
5V_HDMI_2
HDMI_EXT_EDID
1K
R3268
ESD_HDMI
VA3209
ESD_HDMI
CEC_REMOTE
HDMI_INT_EDID
VA3205
R3266
100K
R3251
33
Q3206
MMBT3904(NXP)
C
B
HDMI_EXT_EDID
E
1K
R3269
HDMI_EXT_EDID
HDMI_EXT_EDID
R3270
4.7K
VA3203
ESD_HDMI
D3212
IP4294CZ10-TBR
1
2
3
4
5
ESD_HDMI_TMDS
D3213
IP4294CZ10-TBR
1
2
3
4
5
ESN_HDMI_TMDS
HDMI_HPD_2
AR3201
33
1/16W
VA3204
ESD_HDMI
10
9
8
7
6
10
9
8
7
6
HDMI2
DDC_SCL_2
DDC_SDA_2
CK-_HDMI2
CK+_HDMI2
D0-_HDMI2
D0+_HDMI2
D1-_HDMI2
D1+_HDMI2
D2-_HDMI2
D2+_HDMI2
+5V_NORMAL
D3200
AR3204
47K
1/16W
5V_HDMI_1
A2CA1
DDC_SDA_1
DDC_SCL_1
E0
E1
E2
VSS
HDMI_EXT_EDID
MMBT3904(NXP)
IC3203
M24C02-RMN6T
1
2
3
4
HDMI_EXT_EDID_ST
Q3203
8
7
6
5
VCC
WC
SCL
SDA
E
C
HDMI_EXT_EDID
HDMI_EXT_EDID
+5V_NORMAL
5V_HDMI_4
D3203
AR3205
47K
1/16W
5V_HDMI_2
+5V_NORMAL
EDID_WP
B
R3258
33
R3259
33
+3.5V_ST
HDMI_EXT_EDID
R3271
4.7K
AR3206
47K
1/16W
A2CA1
MMBD6100
D3216
A2CA1
D3205
DDC_SCL_2
DDC_SDA_2
+3.5V_ST
DDC_SDA_4
DDC_SCL_4
A2CA1
IC3203-*1
AT24C02C-SSHM-T
A0
1
A1
2
A2
3
GND
4
HDMI_EXT_EDID_ATMEL
HDMI LEAKAGE Workaround in MTK A2(A0) (Default= with HDMI_LEAKAGE)
+3.3V_NORMAL
R3255
OPT
0
1/16W
5%
PANEL_VCC
R3254
10K
G
D
S
NTR4501NT1G
Q3202
VCC
8
WP
7
SCL
6
SDA
5
VDD3V3_HDMI
C3227
0.1uF
16V
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.
MID_LG1311
HDMI
2013.03.22
32
Page 34
SPDIF OUT
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
SPDIF_OUT
+3.3V_NORMAL
C3402
47pF
50V
C3400
0.1uF
16V
GND
VCC
VINPUT
1
2
3
4
Fiber Optic
JK3401
JST1223-001
FIX_POLE
DOUT1
HP_ROUT
HP_LOUT
HP_DET
TP3400
TP3401
IRB_DATA
IRB_3.3V
RIN1RIN1
DOUT1
HP_OUT
HP_OUT
HP_OUT
HP OUT
R3825
150
R3826
150
R3409
100
IR_Bla
R3823
0
IR_Bla
R3824
0
+3.3V_NORMAL
R3406
10K
HP_OUT
VA3405
5.6V
HP_OUT
E_SPRING
R_SPRING
T_SPRING
B_TERMINAL2
T_TERMINAL2
JK3403
PEJ034-01
3
4
5
7B
6B
DDTS TEST ONLY
M_REMOTE_RX
M_REMOTE_TX
+3.5V_ST
OPT
R3827
10K
OPT
P3401
12507WS-04L
1
2
3
4
5
R3401
10K
SOC_RX
SOC_TX
UART for Debug
+3.5V_ST
P3400
12507WS-04L
1
2
3
4
5
AV/COMPONENT REAR
PPJ245N2-01
JK3802
[GN/YL]E-LUG
6A
5A
[GN/YL]O-SPRING
4A
[GN/YL]CONTACT
5B
[BL]O-SPRING
7C
[RD1]E-LUG-S
5C
[RD1]O-SPRING
4C
[RD1]CONTACT
5D
[WH]O-SPRING
4E
[RD2]CONTACT
5E
[RD2]O-SPRING
6E
[RD2]E-LUG
VA3804
5.5V
VA3805
5.5V
VA3801
5.6V
+3.3V_NORMAL
VA3806
5.5V
R3806
10K
VA3803
5.6V
COMP1_Pb
COMP1_Pr
COMP1/AV1/DVI_L_IN
COMP1/AV1/DVI_R_IN
VA3802
5.6V
Place JACK Side
R3801
1K
AV1_CVBS_DET
+3.3V_NORMAL
R3810
10K
VA3800
5.6V
R3802
1K
C310
150pF
OPT
3216
R314
75
COMP1_DET
Place SOC Side
R327100
R33433
C325 0.047uF
C3230.047uF
C3281000pF
AV1_CVBS_IN_SOC
COMP2_Y_IN_SOC
COMP2_Y_IN_SOC_SOY
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.
MID_LG1311
AV JACK
2013.04.03
11
31
Page 35
BT_RESET
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
WOL/WIFI_POWER_ON
EYE_SDA
EYE_SCL
LED_R
PAGE 12
P4000
SMAW200-H18S5
GND
NC
WOL
SDA
SCL
GND
IR
1
3
5
7
9
11
13
15
17
19
R4001
C4003
0.1uF
R4010
100
R4011
100
IR
R4015
1.8K
OPT
C4009
0.1uF
16V
R4005
10K
5%
C4004
0.1uF
+3.5V_ST
C4007
100pF
50V
100
R4002
100C4015
BT_RESET
LED_R
2
4
6
8
10
12
14
16
18
GND
+3.5V_WOL
USB_DM
USB_DP
GND
GND
KEY1
KEY2
+3.5V_ST
GND
D4000
RCLAMP0502BA
L4000 Delete for voltage drop, 131120
C4005
0.1uF
Place Near Wafer
C4016
5pF
50V
OPT
OPT
C4008
1000pF
50V
OPT
+3.5V_ST
5pF
50V
OPT
C4006
22uF
R4018
10
R4019
10
OPT
10V
WIFI_DM
WIFI_DP
R4008
10K
C4001
C4002
0.1uF
0.1uF
+3.5V_ST
5%
OPT
R4009
10K
5%
+3.5V_WOL
R4006
R4007
100
KEY1
100
KEY2
IC4000
AO-R123C7G-LG
GND
G
VS
V
OUT
O
IR_PROTO
R4017
330
IR_PROTO
+3.5V_ST
1/16W
5%
R4016471/10W
IR_PROTO
IR
5%
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.
MID_LG1311
IR / KEY
2013.03.22
12
31
Page 36
PAGE 13
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
USB_DM2
USB_DP2
+5V_USB_2
5V
D4301
USB_ESD_SD05
+5V_USB_3
C4322
10uF
10V
C4323
22uF
10V
USB2
MAX 1.5A
3AU04S -30 5-ZC-(LG)
D4302
RCLAMP0582B
USB_ESD_0582B
USB_ESD_0502BA
D4302-*1
RCLAMP0502BA
USB3
JK4302
1234
USB DO WN STREAM
5
USB_DM3
USB_DP3
5V
D4303
USB_ESD_SD05
C4310
10uF
10V
C4311
22uF
10V
MAX 1.5A
D4300
RCLAMP0582B
USB_ESD_0582B
USB_ESD_0502BA
D4300-*1
RCLAMP0502BA
3AU04S -30 5-ZC-(LG)
JK4300
1234
USB DOWN STREAM
5
EAX6536390* : Use RClamp0582B, SD05
EAX6538400* : Use RClamp0502BA
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.
MID_LG1311
USB 2 & 3
2013.04.03
1
Page 37
+5V_USB_1
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
PAGE 14
value change
10K(2.63V) --> 4.7K(2.97V)
/USB_OCD1
USB_CTL1
R4500
10K
+3.3V_NORMAL
R4501
4.7K
+5V_NORMAL
0.1uF
16V
OCP USB1
VIN
1
GND
2
EN
3
IC4500
BD2242G
USB1 (2.0)
MAX 1.5A
OPT
C4501
C4502
10uF
22uF
10V
+5V_USB_1
VOUT
6
ILIM
5
1%
OC
4
14K
R4502
USB_DM1
USB_DP1C4500
10V
D4500
RCLAMP0582B
USB_ESD_0582B
USB_ESD_0502BA
D4500-*1
RCLAMP0502BA
5V
D4501
USB_ESD_SD05
3AU04S -30 5-ZC-(LG)
JK4500
1234
USB DO WN STREAM
5
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.
EAX6536390* : Use RClamp0582B, SD05
EAX6538400* : Use RClamp0502BA
MID_LG1311
USB 1(DVR)
2013.04.03
1
Page 38
Ethernet Block
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
PAGE 16
JK5000
RJ45VT-01SN002
1
2
3
4
5
6
7
8
9
9
C5000
0.1uF
16V
1
2
3
4
5
6
7
8
D5000
5.5V
LAN_ESD
C5001
0.01uF
50V
D5001
5.5V
LAN_ESD
D5002
5.5V
LAN_ESD
D5003
5.5V
LAN_ESD
EPHY_TDP
EPHY_TDN
EPHY_RDP
EPHY_RDN
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.
Page 39
Ethernet Block
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
PAGE 17
+3.5V_WOL
3.3K
WOL POWER ENABLE CONTROL
+3.5V_WOL
LAN_JACK_POWER
C5203
C5201
C5200
4.7uF
10V
Place 0.1uF close to each power pins
0.1uF
0.1uF
16V
16V
EPHY_RDP
EPHY_RDN
EPHY_TDP
EPHY_TDN
ETHERNET INTERFACE
- CROSS CONNECTION
(PATTERN ISSUE)
ET_COL/SNI
Place this cap. near IC
C5205
Place this Res. near IC
0.1uF
16V
Route Single 50 Ohm, Differential 100 Ohm
+3.5V_WOL
R5203
3.3K
C5206
8pF
50V
R5204
2.49K 1%
1
4
3
XTA L_2
C5207
8pF
50V
AVDD10OUT
+3.5V_WOL
XTA L_12GND _1
X52 00
25M Hz
GND _2
RSET
MDI+[0]
MDI-[0]
MDI+[1]
MDI-[1]
AVDD33_1
RXDV
3.3K
R5200
+3.5V_WOL
R52021M
OPT
[EP]
CKXTAL2
1
THERMAL
2
3
4
5
6
7
8
RXD[0]10RXD[1]
Place this cap. near IC
C5208
0.1uF
16V
ET_RXER
R5218
0
DVDD10OUT
AVDD33_2
CKXTAL1
29
30
31
32
33
IC5200
RTL8201F-VB-CG
9
11
12
13
RXC
RXD[2]/INTB
RXD[3]/CLK_CTL
C5209
33pF
3.3K
R5208
EPHY_RXD1
EPHY_RXD0
EPHY_CRS_DV
ET_COL/SNI
CRS/CRS_DV
COL28RXER/FXEN
26
27
14
15
TXC
DVDD33
R5209
C5202
Place near IC
5pF
EPHY_ACTIVITY
R521033
LED1/PHYAD[1]
25
LED0/PHYAD[0]/PMEB
24
MDIO
23
MDC
22
PHYRSTB
21
TXEN
20
TXD[3]
19
TXD[2]
18
TXD[1]
17
16
TXD[0]
51
EPHY_TXD0
+3.5V_WOL
C5211
0.1uF
16V
R5215
3.3K
R5217
EPHY_EN
EPHY_TXD1
R5205
+3.5V_WOL
3.3K
R5212
1.5K
1/16W
EPHY_ACTIVITY
ET_RXER
1%
R5219
10K
1/16W
5%
WOL/ETH_POWER_ON
EPHY_MDIO
EPHY_MDC
/RST_PHY
(from SOC)
+3.5V_ST
WOL_CTL
C5204
0.1uF
R5223 33
R5222
10K
OPT
IN
EN
AP2191WG-7
5
4
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.
IC5201
+3.5V_WOL
OUT
1
GND
2
FLG
3
EPHY_REFCLK
BSD-NC4_H052-HD
2012-09-12
ETHERNET
Page 40
AUDIO AMP(NTP7514)
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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.
WOOFER_MUTE
GP4_MT5369
AUDIO[ST]
SPK_L+
SPK_L-
SPK_R+
SPK_R-
4
3
2
1
P5600
SPK_NON_LB8700
2011.11.21
58
Page 41
EARPHONE AMP
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
IC6100
TPA6138A2
HP_OUT
R6100
10K
C6104
18pF
R6103
HP_OUT
+3.3V_NORMAL
1%
43K
4.7K
R6105
HP_OUT
HP_OUT
R6106
43K
1%
HP_OUT
HP_OUT
HP_OUT
C6100
1uF
10V
HP_ROUT_MAINHP_LOUT_MAIN
HP_OUT
HP_ROUT_AMP
SIDE_HP_MUTE
C6108
10pF
50V
C6102
1uF
10V
+INR
-INR
OUTR
GND_1
MUTE
VSS
1
HP_OUT
2
3
4
5
6
CN
7
HP_OUT
C6103
1uF
10V
+INL
14
-INL
13
OUTL
12
UVP
11
GND_2
10
VDD
9
CP
8
HP_OUT
C6106
10pF
50V
HP_OUT
HP_OUT
R6104
43K
1%
HP_OUT
C6109
18pF
1%
R6102
43K
HP_OUT
+3.3V_NORMAL
HP_OUT
C6105
1uF
16V
10V
C6107
0.1uF
HP_OUT
R6101
10K
C6101
1uF
10V
HP_OUT
HP_LOUT_AMP
PAGE 20
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.
HEADPHONE AMP
2011.09.29
61
Page 42
A1A1B1
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
47
SHIELD
TU_H_AJ
TU6401-*1
TDJH-G101D
B1[+3.3V]
1
NC_1
2
IF_AGC
3
SCL
4
SDA
5
IF[P]
6
IF[N]
7
NC_2
8
NC_3
9
B1
TU_M_BR
B1[+3.3V]
RF_SW_CTL
AIF_AGC
SCL_RF
SDA_RF
AIF[P]
AIF[N]
NC_1
NC_2
NC_3
NC_4
ERROR
GND_1
MCLK
SYNC
VAILD
D0
D1
D2
D3
D4
D5
D6
D7
RESET_DEMOD
B2[+3.3V]
SCL_DEMOD
B3[+1.1V]
NC_5
SDA_DEMOD
TU_M_CO
TU6402-*2
TDJM-K101F
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
A1
B1B1A1
47
SHIELD
TU6402-*1
TDJM-B101F
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
A1
B1B1A1
47
SHIELD
1
2
3
4
5
6
7
8
9
B1[+3.3V]
RF_SW_CTL
AIF_AGC
SCL_RF
SDA_RF
AIF[P]
AIF[N]
NC_1
NC_2
NC_3
NC_4
ERROR
GND_1
MCLK
SYNC
VAILD
D0
D1
D2
D3
D4
D5
D6
D7
RESET_DEMOD
B2[+3.3V]
SCL_DEMOD
B3[+1.1V]
NC_5
SDA_DEMOD
TU_M_AJ
TU6402-*3
TDJM-G105D
B1[+3.3V]
1
NC_1
2
AIF_AGC
3
SCL_RF
4
SDA_RF
5
AIF[P]
6
AIF[N]
7
NC_2
8
NC_3
9
NC_4
10
B2[+3.3V]
11
ERROR
12
GND_1
13
MCLK
14
SYNC
15
VAILD
16
D0
17
D1
18
D2
19
D3
20
D4
21
D5
22
D6
23
D7
24
RESET_DEMOD
25
B3[+3.3V]
26
SCL_DEMOD
27
B4[+1.1V]
28
F22_OUTPUT
29
SDA_DEMOD
30
A1
B1B1A1
47
SHIELD
A1
A1
TU6401
TDJH-H101F
B1[+3.3V]
1
NC_1
2
IF_AGC
3
SCL
4
SDA
5
IF[P]
6
IF[N]
7
NC_2
8
NC_3
9
B1
B1
47
SHIELD
TU_GND_A
TU_H_US
TU_GND_B
TU_GND_A
TU_K_TW
TU6403
TDJK-T101F
B1[+3.3V]
1
RF_S/W_CTL
2
IF_AGC
3
SCL
4
SDA
5
IF[P]
6
IF[N]
7
NC_1
8
NC_2
9
A1
A1
47
SHIELD
B1
B1
TU_GND_B
TU_M_KR
TU6402
TDJM-H101F
B1[+3.3V]
1
NC_1
2
M_DIF_AGC
3
SCL_RF
4
SDA_RF
5
M_DIF[P]
6
M_DIF[N]
7
S_SIF
8
S_CVBS
9
NC_2
10
B2[+3.3V]
11
S_ERROR
12
GND_1
13
S_MCLK
14
S_SYNC
15
S_VALID
16
S_DATA
17
NC_3
18
NC_4
19
NC_5
20
NC_6
21
NC_7
22
NC_8
23
NC_9
24
S_RESET_DEMOD
25
B3[+3.3V]
26
SCL_DEMOD
27
B4[+1.1V]
28
NC_10
29
SDA_DEMOD
30
+3.3V_LNA_TU
RF_SWITCH_CTL_TU
IF_AGC_TU
I2C_SCL6_TU
I2C_SDA6_TU
IF_P_TU
IF_N_TU
TU_SIF_TU
TU_CVBS_TU
+3.3V_TU
FE_DEMOD1_TS_ERROR
FE_DEMOD1_TS_CLK
FE_DEMOD1_TS_SYNC
FE_DEMOD1_TS_VAL
FE_DEMOD1_TS_DATA[0]
FE_DEMOD1_TS_DATA[1]
FE_DEMOD1_TS_DATA[2]
FE_DEMOD1_TS_DATA[3]
FE_DEMOD1_TS_DATA[4]
FE_DEMOD1_TS_DATA[5]
FE_DEMOD1_TS_DATA[6]
FE_DEMOD1_TS_DATA[7]
/TU_RESET1_TU
+3.3V_DEMOD_TU
I2C_SCL4_TU
D_Demod_Core
LNB_TX
I2C_SDA4_TU
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
R6405
R6406
R6404
R6403
0
0
0
TU_H/M_KR/US/AJ
TU_H/M_KR/US/AJ
TU_H/M_KR/US/AJ
TU_H/M_BR/TW/CO
C6401
1000pF
630V
0
R6401
0
TU_H/M_KR/US/AJ
TU_H/M_BR/TW/CO
TU_GND_B
TU_GND_A
TU_H/M_KR/US/AJ/BR/TW/CO
C6402
1000pF
630V
R6402
22
TU_H/M_KR/US
R6402-*1
0
TU_H/M_AJ/BR/TW/CO
TU_GND_A
A1
A1
B1
B1
47
SHIELD
TU_GND_B
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.
TUNER
2012.03.08
65
Page 43
Global F/E Option Name
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
1. TU
2. Tuner Name = TDJ’H’,TDj’M’...
3. Country Name = KR,US,BR,EU ...
Example of Option name
TU_ALL_IntDemod = All Tuner type for Internal demod
TU_M/W = apply TDSM&TDSW Type Tuner
14’ Tuner Type for Global
TDJ’H’-G101D : Half NIM for EU,AJJA
TDJ’H’-H101F : Half NIM for US, KR
TDJ’K’-T101F : Half NIM for TW
TDJ’M’-C301D,F : FULL NIM for China
TDJ’M’-B101F : Brazil NIM with Isolater Type
TDJ’M’-K101F : colombia NIM
TDJ’M’-G101D,G105D,G151D : EU Combo&Full NIM
TDJ’M’-H101F,H151F : Korea PIP tuner
TDJ’W’-A151D : AJJA T2 PIP
3. Signal Width >= 12mils
Signal to Signal Width = 12mils
RF_SWITCH_CTL
Ground Width >= 24mils
IF_AGC
TU_ALL_2178B
R6513 0
I2C_SCL4
I2C_SDA4
TUNER_SIF
+3.3V_TUNER
TU_ALL_2178B
R6516
200
B
TU_ALL_2178B
R6517
200
E
TU_ALL_2178B
Q6502
MMBT3906(NXP)
C
1608 perallel
because of derating
TU_CVBS
+3.5V_ST
POWER_ON/OFF2_1
TU_M/W
10K
R6500
TU_M/W
C6500
10uF
10V
+5V_NORMAL
TU_M/W
C6515
1uF
10V
+3.3V_NORMAL
C6517
22uF
10V
85C
IC6500
TU_M/W
C6516
0.1uF
AP2132MP-2.5TRG1
PG
1
EN
2
VIN
3
VCTRL
2A
4
Vout=0.6*(1+R1/R2)
L6504
BLM18PG121SN1D
TU_M/W
9
THERMAL
/TU_RESET2_TU
+3.3V_TUNER
T2 : Max 1.7A
else : Max 0.7A
Demod_Core
[EP]
R6521-*1
TU_M/W
C6518
10uF
10V
18K
R6519-*1
16K
TU_M/W_1.1V
TU_M/W_1.1V
TU_M/W_1.2V
GND
8
ADJ
7
VOUT
6
NC
5
10K
R65 21
R65 19
10. 5K
TU_M/W_1.2V
R2
R1
/TU_RESET2
FE_DEMOD1_TS_ERROR
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.
TUNER
2012.07.10
65
Page 44
LVDS
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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.
MID_LG1311
LVDS INTERFACE
BSD-NC4_H072-HD
2013.04.03
Page 45
LOCAL DIMMING
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
[To LED DRIVER]
P7400
12507WR-08L
L/DIM_OUT_8P
PAGE 28
1
2
3
4
5
6
7
8
9
R7401
10K
L/DIM_OUT_8P
33
1/16W
AR7400
L/DIM_OUT_8P
L/DIM0_SCLK
L/DIM0_MOSI
I2C_SCL2
I2C_SDA2
L/DIM0_VS
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.
LOCAL DIMMING
BSD-NC4_H074-HD
2012.09.14
Page 46
CLK6
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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.
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.
eMMC
11.09.29
81
Page 48
IR BLASTER
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
PAGE 31
IR_B_RESET
R110011K
IR_Bla
IRB_SPI_MOSI/TDO1
IRB_SPI_MISO/TDI1
IRB_SPI_SS/TMS1
IRB_SPI_CK/TCK1
+3.3V_IR_Bla
R11026
4.7K
IR_Bla
B
+3.3V_NORMAL
+5V_NORMAL
IR_Bla
C
Q11003
MMBT3904(NXP)
IR_Bla
E
IR_Bla
R11021
C11003
IR_Bla
C11005
8pF
8pF
10K
50V
50V
C11012
0.1uF
16V
OPT
XTAL_1
GND_1
1
2
8MHz
4
3
DEV_8M_XTAL
GND_2
XTAL_2
IR_Bla
C11013
0.1uF
16V
33
R11006
33
R11007
33
R11008
33
R11009
IR_Bla
S
R11030
X11002
IR_Bla
IR_Bla
IR_Bla
IR_Bla
G
D
AO3438
Q11002
1M
OPT
+3.3V_IR_Bla
P20/RESETB
P10/KS8/MOSI1
P11/KS9/MISO1
P12/KS10/INT0
P13/KS11/INT1
P14/KS12/SS1/INT2
P15/KS13/XCK1/INT3
P16/KS14/MOSI0
P17/KS15/MISO0
P30/SS0/EC2/EXTREF
P31/XCK0/SENSOR
XOUT
VSS
XIN
IC11002
MC96FR3128R
1
IR_Bla
2
3
4
5
6
7
8
9
10
11
12
13
14
VDD
28
REMOUT
27
P22/INT3/DSDA
26
P21/INT2/DSCL
25
P07/KS7
24
P06/KS6
23
P05/KS5/EC3
22
P04/KS4/EC0
21
P03/KS3/T3/PWM3
20
P02/KS2/T2
19
P01/KS1/T1/PWM1
18
P00/KS0/T0
17
P37/INT1/SS0
16
P36/INT0/XCK0
15
+3.3V_IR_Bla
R11015120
B
IR_Bla
+3.3V_IR_Bla
P11001
12507WS-04L
1
IR_Bla
2
DSCL
3
DSDA
4
5
IR_B Micom Download
C
IR_Bla
Q11001
SBT2222A_AUK
E
R11019
0
IR_Bla
Pattern Width : 0.5mm
D11001
IR_Bla
BLM18PG121SN1D
+3.3V_IR_Bla
L11001
IR_Bla
IR_Bla
R11020
Pattern Width : 0.5mm
10
C11004
10uF
10V
IR_Bla
C11006
C11008
0.1uF
10uF
16V
OPT
IR_Bla
Close to JK11001
IR_Bla
D11002
JP11002
JP11001
IRB_DATA
IRB_3.3V
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.
MID_LG1311
IR Blaster/Boost
2013.04.02
110
Page 49
RS-232C Control INTERFACE
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
+3.5V_ST
RS232C
R6820
100
RS232C
R6821
100
PAGE 32
DOUT1
RIN1
RS232C
RS232C
RS232C
RS232C
C6808
0.1uF
C6809
0.1uF
C6810
0.1uF
C6811
0.1uF
C1+
C1-
C2+
C2-
DOUT2
RIN2
V+
V-
RS232C
IC6801
MAX3232CDR
1
2
3
4
5
6
7
8
EAN41348201
OPT
ZD6802
ADUC 20S 02 010L
RS232C
C6813
0.1uF
VCC
16
GND
15
DOUT1
14
RIN1
13
ROUT1
12
DIN1
11
DIN2
10
ROUT2
9
SOC_RX
SOC_TX
20V
OPT
ZD6803
ADUC 20S 02 010L
20V
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.
Page 50
Page 51
2014 LED/LCD TV
< Applicable Model
Mid end >
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
PANEL_VCC (+12V)
I2C
EO/GST/GCLK/MCLK
4
IC101
M14
8
EPI Tx
Block
VCOM 1/2 - Top/Bottom
PVCOM
EPI CH1/2/3/4+/-
VDD
VCC1.8
PMIC+L/S
TPS65175
H_VDD
4
6
6
6
4
6
VGH
VGL
SWP
CTRLP
SWN
CTRLN
TR/
Diode
TR/
Diode
GMA4/GMA5/GAM7/GMA12/GMA14/GMA15
VGH_ODD/EVEN,VST,GIP_RST
CLK1~CLK6
50Pin X 2
6
G
EFT
A1/GMA3/GAM9/
OP AMP
EPI CH5/6/7/8+/-
8
CLK1~CLK6
6
VGH_ODD/EVEN,VST,GIP_RST
4
6
GMA4/GMA5/GAM7/GMA12/GMA14/GMA15
VCOMLFB
VCOMRFB
EPI
LOCK4
MA10/GMA16/G
RI
HT
EPI_LOCK8EPI_LOCK8
A18
Page 72
9. USB 2.0 / WIFI-BT / IR-KEY-EYE
/USB_OCD2
/USB_OCD3
_SDA
[USB2_0_DP0]
_
M14
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
[USB3_DM0]
[USB3_DP0]
[HUB_PORT_OVER0]
[HUB_VBUS_CTRL0]
[USB3_DM1]
[USB3_DP1]
[EB_CS3]
[EB_CS2]
[USB2_1_DM0]
[USB2_1_DP0]
[EB_CS1]
[EB_CS0]
[USB2_0_DM0]
USB3_DM
USB3_DP
/USB_OCD1
USB_CTL1
USB_DM2
USB_DP2
USB_CTL2
USB_DM3
USB_DP3
USB_CTL3
WIFI-BT_DM
WIFI-BT_DP
USB1
USB2
USB3
+5V_USB_1
+5V_USB_2
+5V_USB_3
IC 4500
OCP
IC 4306
OCP
WIFI-BT
IC101
Micom
EYY_SCL
EYE
LED
IR
KEY1
KEY2
IR-KEY
-EYE
Page 73
◈
CONTENT
◈
2014 Product line
-
up and features
Instruction of new sub assy’s
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
‘1.
2. Model naming and tool option
3. New features
4. Main PCBs
5. Block Diagrams, IIC Map
6. Structure of TV set and connection of sub assy’s
7. New sub assy’s
-
- How to use tool
- Download
8. Repair guide
Page 74
Interconnection
[
]
[]
[
]
[]
46565
8Pin WIFI/BT A
4
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
55LB7200-UB
PCBs
1
Main PCB
2
3
3
2
1
1
4
Power Board
IR / Key Assy
WIFI/BT Assy
Cables
2
1
Main / LPB 24Pin cable
2
Main / Module LVDS Cable
3
LED driver / PSU
4
10Pin IR+key Cable
3
6
SPK Cable
ssy Cable
Page 75
Interconnection
[
]
[]
[
]
[]
645
8Pin WIFI/BT A
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
70LB7100-UC
PCBs
1
Main PCB
2
3
3
2
6
3
1
1
2
4
5
4
1
2
3
4
Power Board
IR / Key Assy
WIFI/BT Assy
Cables
Main / LPB 24Pin cable
Main / Module LVDS Cable
LED driver / PSU
10Pin IR+key Cable
6
SPK Cable
ssy Cable
Page 76
Interconnection
[
]
[]
[
]
[]
646
5
8Pin WIFI/BT A
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
60LB7100-UT
PCBs
1
Main PCB
2
3
3
4
2
1
1
Power Board
IR / Key Assy
WIFI/BT Assy
Cables
2
4
3
5
1
Main / LPB 24Pin cable
2
Main / Module LVDS Cable
LED driver / PSU
3
4
10Pin IR+key Cable
6
SPK Cable
ssy Cable
Page 77
Interconnection
[
]
[]
[
]
[]
6
5
8Pin WIFI/BT A
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
55LB6500-UM
PCBs
1
Main PCB
2
3
3
1
2
1
4
Power Board
IR / Key Assy
WIFI/BT Assy
Cables
2
1
Main / LPB 24Pin cable
4
4
3
5
6
2
Main / Module LVDS Cable
3
LED driver / PSU
4
10Pin IR+key Cable
6
SPK Cable
ssy Cable
Page 78
Interconnection
[
]
[]
[
]
[]
646
5
8Pin WIFI/BT A
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
42LB6500-UM(AUO)
PCBs
1
Main PCB
2
3
3
1
2
1
4
Power Board
IR / Key Assy
WIFI/BT Assy
Cables
2
4
3
5
1
Main / LPB 24Pin cable
2
Main / Module LVDS Cable
3
LED driver / PSU
4
10Pin IR+key Cable
6
SPK Cable
ssy Cable
Page 79
◈
CONTENT
◈
2014 Product line
-
up and features
Instruction of new sub assy’s
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
‘1.
2. Model naming and tool option
3. New features
4. Main PCBs
5. Block Diagrams, IIC Map
6. Structure of TV set and connection of sub ass’ys
7. New sub assy’s
-
- How to use tool
- Download
8. Repair guide
Page 80
Introductions of 14Y WIFI / BT built in assy + Magic Remote control
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Table of Contents
1.System
2.Block diagram
3.Paring method
Page 81
1. System
BD_ADDR(SavealsoinReceiver)
/
packets are
just saved o
eceive
/esoad
pacesae
jussaedoeecee
gyro,
r
gy,
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
RF
RF Receiver
Remote
Pairing Information Transmission (Send to TV after Paired)
•Static Calibration Data (Bypass only)
•Remote FW ver. (Save also in Receiver)
•
•Pairing Information Transmission Sequence
•When it is paired, the remote sends packets(pairing success, F/W version, BD_ADDR) to the receiver.
•The receiver sends the pairing success packet to TV directly.
•F
W version and BD ADDR
_
•The receiver sends F/W version or BD_ADDR packet to TV when it is required.
n the r
USB
TV
r.
Motion Data Transmission
• Period : 7.5msec
• Motion Data :
acceleromete
Voice Data Transmission
• Period : 10msec
• Voice sampling : 16khz 16bit
Page 82
2. MR14 Block Diagram
1Mbit
37.4 MHz
Combo Modul
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Antenna
BCM43242
(BROADCOM)
Bluetooth 4.0
SPI
(Serial Flash)
X-tal
Bluetooth Remote control
USB 2.0
Connector
WiFi / Bluetooth
e
Page 83
3. RF Pairing / Un-pairing Method
Method
D
signal(0x29) to TV
If paired, press Wheel key after
•
When remote try to
unpairing
Press HOME button and BACK button at
inf
j
j
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
escription
•When do pairing, the remote
should make pairing request IR
.
RF Pairing
RF Unpairing
Method1
– If unpaired, just press Wheel key.
unpairing.
Method 2 (Repairing)
– Press “BACK" button for 5 sec.
“
"
the same time for 5 sec.
•When TV receive the IR signal, it
should send "pairing request
packet" to the RF receiver.
•After pairing success, the remote
should blink LED for some time and
TV send "pairing success packet"
back to TV.
•When remote try to unpairing, it
doesn’t care about state of
receiver(stand alone).
, it
doesn’t care about state of
receiver(stand alone).
•After unpairing, all pairing
“
"
ormation should be erased.
•After unpairing, LED should be
blinked for 3sec.
•The remote
mode.
ust becomes to IR
Page 84
WIFI Built in assy feature
Block diagram
RX/TX
BT TX
TX
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
34
Wafer
8pin 1.25mm
54
GND
BT_REG_ON
3DG
WL_HOST_Wake
GND
USB DP, DN
VCC
3.3V1.2V
USB DP, DN
Crystal
37.4MHz
BCM43232
RX/TX
RTC6608O
RFLPF1608
Switch
RTC6603
Switch
Antenna
Antenna
2.4G/5G
Antenna
2.4G/5G
2.4G
Page 85
WIFI Built in ass’y Specification
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Page 86
◈
CONTENT
◈
2014 Product line
-
up and features
y
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
‘1.
2. Model naming and tool option
3. New features
4. Main PCBs
5. Block Diagrams, IIC Map
6. Structure of TV set and connection of sub ass’ys
7. New sub ass’ys
- Instruction of new sub ass’ys
- How to use tool
- Download
8. Repair guide
Page 87
Contents of LCD TV Standard Repair Process
)
)
Vertical/Horizontal bar, residual image, light
7
g
8
First of all, Ch
SVC Bulletin in GCSC Syst
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
No.Error symptom (High category
1No video/Normal audio 1
2 No video/No audio2
3Video error, video lag/stop, fail tunning3, 4
4Color error5
5
6
8
9Wrecked audio/discontinuation/noise10
A. Video error
B. Power error
C. Audio error
spot, external device color error
No power7
Off when on, off while viewing, power auto
on/off
No audio/Normal video 9
Error symptom (Mid category
PageRemarks
6
10
D. Function error
11External device recognition error 12
12E. NoiseCircuit noise, mechanical noise13
13F. Exterior errorExterior defect14
eck whether there is
No response in remote controller, key error,
recording error, memory error
11
em for these model.
Page 88
Contents of LCD TV Standard Repair Process Detail Technical Manual
9
LCD TV
A8
residual image, light spot
17
Exchange T
Con Board (2)
A
2/5
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
No.Error symptomContentPageRemarks
1
2LED driver B+ 24V measuring method
A. Video error_ No video/Normal audio
3Check White Balance valueA4
4Power Board voltage measuring methodA5
6
A. Video error_ No video/Video lag/stop
7LCD-TV Version checking methodA7
10Tuner Checking PartA9
A. Video error_Color error
11Check Link Cable (LVDS) reconnection condition
12Adjustment Test pattern - ADJ KeyA12
13
14Check Link Cable (LVDS) reconnection condition
A. Video error_Vertical/Horizontal bar,
Check LCD back light with naked eyeA1
TUNER input signal strength checking methodA6
connection diagram
LCD TV connection diagram A8
15Adjustment Test pattern - ADJ KeyA12
16Exchange T-Con Board (1)A-1/5
<Appendix>
18Exchange LED driver Board (PSU) A-3/5
19Exchange Module itself (1)A-4/5
20Exchange Module itself (2)A-5/5
Defected Type caused by T-Con/ Inverter/
Module
-
-
Continue to the next page
Page 89
Standard Repair Process
Move to No
R
Check P
t
oltage
otage
※
Precaution
☞
A7
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Established
date
Revised date
LCD TV
Error
symptom
A. Video error
No video/ Normal audio
First of all, Check whether all of cables between board is inserted properly or not.
(Main B/D↔ Power B/D, LVDS Cable,Speaker Cable,IR B/D Cable,,,)
☞A4☞A1
No video
Normal audio
Normal
audio
video/No audio
Y
N
Check Back Light
On with naked eye
On
ower Board 24v outpu
Normal
v
Repair Power
Board or parts
Y
Check Power Board
12v,3.5v etc.
N
Replace Inverter
Y
or module
N
Normal
voltage
N
epair Power Board
or parts
End
2013. 11 .30
1/13
Y
Replace T-con Board
or module
And Adjust VCOM
☞A28
Always check & record S/W Version and White
Balance value before replacing the Main Board
Replace Main Board
Re-enter White Balance value
Page 90
Standard Repair Process
(
)
(,,)
Noaudio
MAIN B/D
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
LCD TV
symptom
No Video/
Error
☞A4
Check various voltages
of Power Board
3.5V,12V,20V or 24V…
A. Video error
No video/ No audio
Normal
voltage?
N
Replace Power
Board and repair
parts
Y
Check and
replace
Established
date
Revised date
End
2013. 11 .30
2/13
Page 91
Standard Repair Process
y
ygg
r
p
A7
Replace
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
LCD TV
☞ A6
Check RF Signal level
Normal
Signal?
N
Check RF Cable
Connection
1. Reconnection
2. Install Booster
Normal
Picture?
Y
Close
Y
N
Error
symptom
A. Picture Problem
Picture broken/ Freezing
. By using Digital signal level meter
. B
using Diagnostics menu on OSD
( Menu→ Set up→ Support → Signal Test )
- Signal strength (Normal : over 50%)
- Signal Quality (Normal: over 50%)
Check whether other equipments have problem or not.
(By connecting RF Cable at other equipment)
→ DVD Player ,Set-Top-Box, Different maker TV etc`
Normal
Picture?
N
Contact with signal distributor
or broadcaster (Cable or Air)
Y
☞
Check
S/W Version
SVC
Bulletin?
Y
S/W Upgrade
Normal
Picture?
Y
Established
date
Revised date
■ Menu→Setup →Booste
N
N
Booster menu
On→Off: Check
Off→On: Check
2013. 11 .30
Normal
Picture?
Check
Tuner soldering
Main B/D
3/13
Y
Close
N
Close
Page 92
Standard Repair Process
→ Set
Top
Box, Different maker TV etc
Si
l?
S/W V
Bulletin?
Checksatellite
tting?
T
Main B/D
N
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
LCD TV
☞ A6
Check RF Signal level
Normal
gna
N
Contact with
signal distributor
or broadcaster
(Cable or Air)
Y
Error
symptom
A. Picture Problem (DVB-S/S2)
Check RF signal cable (DVB satellite signal or not)
Check whether other equipments have problem or not.
(By connecting RF Cable at other equipment)
-
-
Check satellite setting.
- Check LNB frequency.
-
- Check Satellite connection
(DiSEqC, motor, etc…)
Tuning fail, Picture broken/ Freezing
☞ A7
Normal
se
N
Change satellite setting
(match with installed ANT)
Y
Check
ersion
Established
date
Revised date
SVC
Y
S/W Upgrade
Normal
Picture?
2013. 11 .30
3/13
N
N
Check
uner soldering
Replace
Close
Normal
Picture?
Y
Close
Y
Close
Page 93
Standard Repair Process
A8
N
HDMI/DVI
N
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
LCD TV
☞
Check color by input
-External Input
-COMPONENT
-RGB
-
☞A12
Check Test pattern
Error
symptom
Color
error?
Check error color
input mode
Y
External Input/
Component
A. Video error
Color error
※ Check and
replace Link
Cable
(LVDS) and
contact
condition
error
Color
error?
N
Check
external
device and
cable
Y
Replace Main B/D
Established
date
Revised date
External device
/Cable
normal
N
Color
error?
End
Y
2013. 11 .30
4/13
Y
Replace module
Replace Main B/D
RGB/
HDMI/DVI
error
Check external
device and
cable
Request repair
for external
device/cable
N
External device
/Cable
normal
Y
Replace Main B/D
Page 94
Standard Repair Process
lightspot,externaldevicecolorerror
A8
N
Y
Check S/W Version
N
Check
pg
(Check normal operation of
p
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
A. Video error
LCD TV
Error
symptom
Vertical / Horizontal bar, residual image,
Vertical/Horizontal bar, residual image, light spot
☞
Check color condition by input
-External Input
-Component
-RGB
-HDMI/DVI
☞A12
Check Test pattern
Screen
normal?
Replace
module
Check external
Y
device
connection
condition
Request repair
for external
device
External device screen error-Color error
Normal?
N
Check and
Y
replace Link
Cable
Established
date
Revised date
Screen
normal?
End
2013. 11 .30
☞ A28
N
Replace Main B/D
(adjust VCOM)
For LGD panel
Replace Main B/D
For other panel
5/13
Replace
Module
N
Screen
normal?
Y
End
version
Y
S/W Upgrade
Normal
screen?
End
N
Y
Check screen
condition by input
-External Input
-Component
-RGB
-HDMI/DVI
External
Input
error
Component
error
RGB
error
HDMI/
DVI
Connect other external
device and cable
(Check normal operation of
External Input, Component,
RGB and HDMI/DVI by
connecting Jig, pattern
Generator ,Set-top Box etc.
Connect other external
device and cable
External Input, Component,
RGB and HDMI/DVI by
connecting Jig, pattern
Generator ,Set-top Box etc.
Screen
normal?
Request repair for
external device
Screen
normal?
N
Y
Y
N
Replace
Main B/D
Replace
Main B/D
Page 95
Standard Repair Process
y p
On?
ypgy
operation?
On ‘”High”
Power LED
Power
☞
A4
Y
Replace Power B/D
B/D
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
LCD TV
☞A17
Check
. Stand-By: Red
. Operating: white
Error
symptom
Power LED
N
Check Power cord
was inserted properly
Normal?
Close
Y
N
※
B. Power error
Check ST-BY 3.5V
☞A18
No power
DC Power on
ressing Power Key
b
On Remote control
Normal
voltage?
Established
date
Revised date
Normal
Measure voltage of each output of Power B/D
Y
Y
Normal
voltage?
N
Check Power
Y
Y
N
Replace Main B/D
2013. 11 .30
Replace Main B/D
OK?
Y
6/13
Replace
B/D
N
Replace Power
Page 96
Standard Repair Process
E
?
Check Power Off
Check A/C
d
CPU
Y
POWEROFF_SWDOWN
Power off by S/W Download
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
LCD TV
Check outlet
cor
Check for all 3- phase
power out
Error
symptom
rror
Y
Fix A/C cord & Outlet
and check each 3
phase out
B. Power error
Off when on, off while viewing, power auto on/off
☞A22
N
Mode
(If Power Off mode is
not displayed)
Check Power B/D
voltage
※ Caution
Check and fix exterior
of Power B/D Part
Established
date
Revised date
Abnormal
Abnormal
1
Normal
voltage?
N
Replace Power B/D
2013. 11 .30
Replace Main B/D
Y
Replace Main B/D
Normal?
N
Replace Power B/D
7/13
End
* Please refer to the all cases which
can be displayed on power off mode.
StatusPower off ListExplanation
"POWEROFF_REMOTEKEY"Power off by REMOTE CONTROL
"POWEROFF_OFFTIMER"Power off by OFF TIMER
"POWEROFF_SLEEPTIMER"Power off by SLEEP TIMER
"POWEROFF_INSTOP"Power off by INSTOP KEY
"POWEROFF_AUTOOFF"Power off by AUTO OFF
Normal
Abnormal
"POWEROFF_ONTIMER"Power off by ON TIMER
"POWEROFF_RS232C"Power off by RS232C
"POWEROFF_RESREC"Power off by Reservated Record
"POWEROFF_RECEND"Power off by End of Recording
"
"POWEROFF_UNKNOWN"Power off by unknown status except listed case
"POWEROFF_ABNORMAL1"Power off by abnormal status except CPU trouble
"POWEROFF_CPUABNORMAL"Power off by CPU Abnormal
"
Page 97
Standard Repair Process
Replace Speaker
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
LCD TV
No audio
Screen normal
Error
symptom
☞A24☞A25
Check user
menu >
Speaker off
C. Audio error
No audio/ Normal video
Check audio B+ 24V
N
Off
Y
Cancel OFF Replace Power Board and repair parts
of Power Board
Established
date
Revised date
Normal
voltage
N
Y
2013. 11 .30
8/13
Check Speaker
disconnection
N
Y
Replace MAIN Board
EndDisconnection
Page 98
Standard Repair Process
Discontinuation/
Check audio
oise only
voltage?
signal
Replace Main B/D
N
oseoy
Noiseonly
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
LCD TV
Check input
signal
-RF
-External Input
Error
symptom
C. Audio error
Wrecked audio/ discontinuation/noise
Established
date
Revised date
2013. 11 .30
→ abnormal audio/discontinuation/noise is same after “Check input signal” compared to No audio
☞A25
Signal
normal?
Y
(When RF signal is not
received)
Request repair to external
cable/ANT provider
(In case of External
Input signal error)
Check and fix
external device
Wrecked audio/
Noise for
all audio
Wrecked audio/
Discontinuation/
Noise only
for D-TV
Wrecked audio/
Discontinuation/
N
for Analog
Wrecked audio/
Discontinuation/
for External Input
Check and replace
speaker and
connector
Connect and check
other external device
B+ Voltage (24V)
Normal
N
Replace Power B/D
Replace Main B/D
N
Normal
audio?
Y
9/13
Y
End
Check and fix external device
Page 99
Standard Repair Process
YNCheck R/C itself
Normal
Normal
Check B+ 3.5V
Normal
Check IR
Normal
IR B/D
cause is interference
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
D. General Function Problem
Remote control & Local switch checking
LCD TV
Error
symptom
1. Remote control(R/C) operating error
☞A27
Operation
Check R/C OperatingCheck & Replace
When turn off light
in room
If R/C operate,
Explain the customer
from light in room.
operating?
Baterry of R/C
Normal
operating?
Check & Repair
Cable connection
Connector solder
Close
N
operating?
Y
Close
☞A27
N
On Main B/D
☞A4
(Power B/D don’t have problem)
Established
date
Revised date
Y
Voltage?
N
Check 3.5v on Power B/D
Replace Power B/D or
Replace Main B/D
2013. 11 .30
☞A27
Output signal
10/13
Replace
Main B/D
Y
Signal?
N
Repair/Replace
Replace R/C
Page 100
Standard Repair Process
S/W Version
g
ith technical
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
LCD TV
Check
input
signal
Error
symptom
Signal
input?
D. Function error
External device recognition error
Y
N
Check technical
information
- Fix information
-
Technical
information?
Y
External Input and
N
Component
Recognition error
Established
date
Revised date
2013. 11 .30
11/13
Replace Main B/D
Check and fix
external device/cable
Fix in
accordance
w
information
RGB,HDMI/
DVI, Optical
Recognition error
Replace Main B/D
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