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 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 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.
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.
5.1. EDID (The Extended Display Identification
Data)/DDC (Display Data Channel) Download
● Summary
▪ It is established in VESA, for communication between PC
and Monitor without order from user for building user
condition. It helps to make easily use realize “Plug and Play”
function. For EDID data write, we use DDC2B protocol.
● Auto Download (No need Writing EDID data in Assembly line)
▪ After Set Tool Option, then TV turn off and on finish auto
download
* EDID data for FHD, 2D, DTS, 8Bit (43/49/55LF59 Series)
(Model name = LG TV ).
- HDMI - 1 EDID table ( 0x40, 0x1B )
5.2. Adjustment Color Temperature
(White balance)
● W/B Equipment condition
CA210 : CH 14, Test signal : I nn er pa tt er n ( 80 IR E) – L ED
Module
CH18, Test signal : Inner pattern (80IRE) – ALEF
Module
● Above 5 minutes H/run in the inner pattern. (“power on” key of
adjust remote control)
※ The spec of color temperature and coordinate.
Cool
(C50)
Medium
All
Warm
(W50)
1) RS-232C Command used during auto-adj.
RS-232C COMMAND
CMDDATAID
Wb0000Begin White Balance adj.
Wb00ff
(0)
13,000kK
9,300kK
6,500kK
X=0.271 (±0.002)
Y=0.270 (±0.002)
X=0.286 (±0.002)
Y=0.289 (±0.002)
X=0.313 (±0.002)
Y=0.329 (±0.002)
Explanation
End White Balance adj. (internal pattern
disappears )
1) Set TV in ADJ mode using P-ONLY key (or POWER ON
key)
2) Place optical probe on the center of the display
- It need to check probe condition of zero calibration before
adjustment.
3) Connect RS-232C Cable
4) Select mode in ADJ Program and begin a adjustment.
5) When WB adjustment is completed with OK message,
check adjustment status of pre-set mode (Cool, Medium,
Warm)
6) Remove probe and RS-232C cable.
▪ W/B Adj. must begin as start command “wb 00 00” , and
finish as end command “wb 00 ff”, and Adj. offset if need
5.2.3. Manual adjustment
5.2.3.1 Manual adj. method
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 à EZ adjust using adj. R/C → 11. WhiteBalance then press the cursor to the right (KEY►). When
KEY(►) is pressed 206 Gray internal pattern will be
displayed.
4) Adjust Cool modes
- Fix the one of R/G/B gain to 192 (default data) and
decrease the others. (If G gain is adjusted over 172 and R
and B gain less than 192 , Adjust is O.K.)
- If G gain is less than 172,
Increase G gain by up to 172, and then increase R gain and
- If R gain or B gain is over 255,
Readjust G gain less than 172, Conform to R gain is 255 or
B gain is 255
5) Adjust two modes (Medium / Warm) Fix the one of R/G/B
gain to 192 (default data) and decrease the others.
6) Adj. is completed, Exit adjust mode using “EXIT” key on
Remote controller
5.2.4. Reference (White Balance Adj. coordinate and
color temperature)
1) Luminance: 204 Gray, 80IRE
2) Standard color coordinate and temperature using CS-1000
(over 26 inch)
5.2.5. Reference (White Balance Adj. coordinate and
color temperature)
1) Luminance: 204 Gray
2) Standard color coordinate and temperature using CS-1000
(over 26 inch)
Mode
Cool0.2710.27013,000K0.0000
Medium0.2860.2899,300K0.0000
Warm0.3130.3296,500K0.0000
▪ Standard color coordinate and temperature using
CA-210(CH-14) – by aging time
Normal line in Korea (From January to February) : LGD (LF5xxx,
LF6xxx, LF7xxx Series models)
webOS
10-2286295301314328354
23-5284290299309326349
36-9282287297306324346
410-19279283294302321342
520-35276278291297318337
636-49274275289294316334
750-79273272288291315331
880-119272271287290314330
9Over 120271270286289313329
Coordinate
XY
Aging time
(Min)
Temp△uv
CoolMediumWarm
XYXYXY
271270286289313329
▪ Standard color coordinate and temperature using
CA-210(CH-14) – by aging time
Normal line in Korea (From March to December) : LGD (LF5xxx,
LF6xxx, LF7xxx Series models)
Normal line in GLOBAL : LGD (LF5xxx, LF6xxx, LF7xxx Series
models)
webOS
Aging time
(Min)
10-2282289297308324348
23-5281287296306323346
36-9279284294303321343
410-19277280292299319339
520-35275277290296317336
636-49274274289293316333
750-79273272288291315331
880-119272271287290314330
9Over 120271270286289313329
CoolMediumWarm
XYXYXY
271270286289313329
5.3. HDMI ARC Function Inspection
5.3.1. Test equipment
- Optic Receiver Speaker
- MSHG-600 (SW: 1220 ↑)
- HDMI Cable (for 1.4 version)
5.3.2. Test method
1) Insert the HDMI Cable to the HDMI ARC port from the
master equipment (HDMI1)
2) Check the sound from the TV Set
3) Check the Sound from the Speaker or using AV & Optic
TEST program (It’s connected to MSHG-600)
- O/S Module(AUO, INX, Sharp, CSOT, BOE)
CoolMediumWarm
xyxyxy
spec271270286289313329
target278280293299320339
Only for training and service purposes
- 12 -
* Remark: Inspect in Power Only Mode and check SW version
in a master equipment
* Caution : Don’t push The INSTOP KEY after completing the
function inspection.
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.
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.
A5LR_Bring_Up
MAIN1
2014.11.01
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Page 21
HDMI_HPD_5V_3
Copyright ⓒ 2015 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.
A5LR_Bring_Up
MAIN2
2014.11.01
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Page 22
+1.5V_DDR
Copyright ⓒ 2015 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.
A5LR_Bring_Up
DDR
2014.11.01
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RL_ON
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
+13V_A
UBW2012-121F
C2302
0.1uF
50V
+3.3V_NORMAL
INV_CTL
+3.4V_ST
Power Wafer
E
RLON_TR_KEC
2N3906S-RTK
B
Q2300-*1
C
RLON_TR_NXP
POWER_WAFER_12PIN
SMAW200-H12S5K(BK)(LTR)
PWR ON
1
1
GND
3
3
D13V
5
5
A13V
7
7
GND
9
9
DRV-ON
11
11
GND
13
GND
15
VSYNC
17
P2301
SMAW200-H18S5
POWER_WAFER_18PIN
C2307
0.1uF
16V
P2300
13
R2301
10K
L2301
ADUC 20S 02 010L
R2300
1K
R2304
10K
MMBT3906(NXP)
VA2301
5.6V
AMOTECH CO., LTD.
20V
OPT
VA2300
R2302
100
Q2300
L/DIM0_VS
2
R2308
1
3
1K
OPT
+3.3V - eMMC 4.41/4.51
+3.3V_NORMAL
L2302
BLM18PG121SN1D
+1.8V - eMMC 4.51
PANEL_POWER
+13V
L2303
UBW2012-121F
C2312
VA2302
OPT
+13V
20V
L/DIM0_MOSI
0.1uF
50V
L/DIM0_SCLK
USING_MTK_PSU
L2314
UBW2012-121F
R2312
4.7K
OPT
PWM_DIM2
R2313
4.7K
OPT
+13V_A
PWM_DIM
PANEL_CTL
ADUC 20S 02 010L
PDIM2
2
2
D13V
4
4
D13V
6
6
A13V
8
8
GND
10
10
PDIM1
12
12
GND
14
SCLK
16
SIN
18
.
Q2302 Change: Diodes --> NXP 131118
+13V
Q2302
C2326
0.1uF
50V
PMV48XP
D
S
G
C
NPN_KEC
Q2301-*1
B
2N3904S
E
L2307
UBW2012-121F
10K
R2316
R2315
R2318
C2321
0.1uF
36K
50V
R2319
150K
C
Q2301
B
MMBT3904(NXP)
NPN_NXP
10K
C2323
4.7uF
10V
OPT
E
R2321
3.3K
LVDS_DISCHARGE
PANEL_VCC
C2334
C2333
10uF
10uF
25V
25V
+1.2V_CORE
+1.2V_MTK_CORE
+13V
R2327
14K
1%
R2328
5.1K
1%
DDR MAIN 1.5V
Power_DET
R2339
100K
P_DET_DIODES
IC2306
APX803E29
VCC
3
VDD
1
GND
P_DET_ROHM
IC2306-*1
BD48K28G
3
C2344
0.1uF
25V
+3.4V_ST
R2345
10K
OPT
R2344
RESET
2
2
1
GND
100
VOUT
POWER_DET
C2359
0.1uF
16V
not to RESET at 8kV ESD
+13V
BIAS
POK
EN
IN
IC2301
TJ2132GDP
1
2
THERMAL
3
2A
4
[EP]GND
GND
8
FB
9
7
OUT
6
SS
5
C2313
2700pF
50V
C2314
0.01uF
50V
+1.5V_DDR
R1
10K
R23 37
R2
R23 35
15K
C2339
10uF
10V
ZD2303
2.5V
OPT
C2308
22uF
10V
3.3V_EMMC
L2306
BLM18PG121SN1D
Placed on SMD-TOP
C2315
C2316
10uF
10uF
25V
25V
C2318
0.1uF
25V
OPT
IC2302
BD86106EFJ
[EP]
PGND
VIN
AGND
FB
SW_2
8
1
SW_1
9
7
2
THERMAL
EN
6
3
COMP
4
5
6A
R2317
6.8K
C2322
0.1uF
16V
0.0068uF
Vout=0.8*(1+R1/R2)
C2325
50V
R2320
10K
POWER_ON/OFF1
L2309
2uH
C2328
22uF
10V
C2329
22uF
10V
C2331
47pF
50V
OPT
R2324
5.1K
R2325
10K
+3.4V_ST
10K
POWER_ON/OFF2_2
C2306
10uF
10V
R2307
+5V_NORMAL
C2311
1uF
10V
1%
R1
1%
2.5V
ZD2302
R2
OPT
L2304
BLM18PG121SN1D
C2305
0.1uF
Vout=0.6*(1+R2/R1)
POWER_ON/OFF2_1
+3.3V_NORMAL
+3.4V_ST
L2300
UBW2012-121F
DVDD18_EMMC
IC2300
AZ1117EH-ADJTRG1
OUTIN
ADJ/GND
75
1%
1/16W
R2309
33
1%
1/16W
R2310
+3.3V_NORMAL
C2301
2.2uF
10V
C
Q2303
MMBT3904(NXP)
NPN_NXP
E
B
C2300
10uF
10V
R2303
10K
C2303
0.1uF
25V
R2305
R2306
2.2K
B
22K
C
Q2303-*1
2N3904S
NPN_KEC
E
R2311
1
C2309
10uF
10V
Q2304
SSM3J332R
D
S
G
C2310
10uF
10V
+3.4V_ST
C2324
10uF
25V
BLM18PG121SN1D
C2335
0.1uF
25V
C2332
22uF
10V
OPT
2.5V
ZD2300
+3.3V_NORMAL
C2304
22uF
10V
5V
ZD2301
C2317
5pF
50V
+3.4V_ST
1%
1/16W
1%
1/16W
R2326
4.87K
R1
240K
R2314
47K
R2322
1/16W
IC2303
TPS56428DDAR
10K
R2323
EN
1
VFB
R2
C2319
1%
0.47uF
25V
VREG5
2
3
PG
4
4A
9
THERMAL
8
7
6
5
[EP]GND
VIN
VBST
SW
GND
VLS6045EXT-4R7M
C2320
0.1uF
50V
L2305
4.7uH
Vout=0.6*(1+R1/R2)
L2308
+3.4V_ST
C2341
22uF
10V
+13V
+5.0V normal & USB
V7V
[EP]GND
EN
1
2
SS
3
4
TPS65282REGR
5
6
FAULT2
/USB_OCD2
+13V
C2340
10uF
PGOOD
24
THERMAL
25
7
FAULT1
/USB_OCD1
VIN_2
22
23
IC2304
4A
9
8
SW_OUT2
L2310
120-ohm
VIN_1
RLIM11AGND
+5V_USB_2
USB_CTL2
USB_CTL1
R2329
4.7K
OPT
C2336
100pF
50V
R2330
10K
0.0068uF
POWER_ON/OFF2_4
10K
R2331
C2337
50V
C2338
4700pF
50V
COMP
ROSC
EN_SW2
EN_SW1
+3.3V_NORMAL
R2332
10K
C2342
10uF
21
10
R2333
15K
25V
PGND_2
20
PGND_1
19
18
17
16
15
14
13
12
SW_OUT1
+5V_USB_1
BST
LX_2
LX_1
FB
SW_IN_2
SW_IN_1
C2343
0.047uF
25V
L2312
4.7uH
C2345
10uF
10V
R2336
5.6K
R1
R2334
30K
1%
R2
1%
+5V_NORMAL
C2347
82pF
50V
C2349
22uF
16V
Vout=0.8*(1+R1/R2)
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.
A5LR_Bring_Up
POWER
2014.11.01
23
Page 24
Renesas MICOM
Copyright ⓒ 2015 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.
A5LR_Bring_Up
MICOM
2014.11.01
30
Page 25
HDMI_SIDE FOR ATSC PCB
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
5V_HDMI_2
5V_HDMI_3
ESD_HDMI
VA3201
BODY_SHIELD
20
19
18
17
16
15
14
13
12
11
10
9
8
EAG63530101
7
6
5
4
3
2
1
JK3200
DAADR019A
HDMI_JACK_FOOSUNG
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+
ESD_HDMI
VA3202
VA3203
ESD_HDMI
CEC_REMOTE
AR3202
5.1
1/16W
EOS_HDMI_TMDS_5.1OHM
AR3203
5.1
1/16W
EOS_HDMI_TMDS_5.1OHM
HDMI1_SIDE
R3201
100K
MMBT3904(NXP)
Q3201
AR3204
100
1/16W
VA3204
ESD_HDMI
R32021K1/16W
5%
C
E
DDC_SCL_3
DDC_SDA_3
ESD_HDMI
VA3205
R3204
4.7K
R3203
1K
B
1/16W
5%
CK-_HDMI3
CK+_HDMI3
D0-_HDMI3
D0+_HDMI3
D1-_HDMI3
D1+_HDMI3
D2-_HDMI3
D2+_HDMI3
R3205
4.7K
OPT
HDMI_HPD_5V_3
BODY_SHIELD
20
19
18
17
16
15
14
13
12
11
10
9
8
EAG63530101
7
6
5
4
3
2
1
JK3201
DAADR019A
HDMI_JACK_FOOSUNG
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+
ESD_HDMI
VA3206
CEC_REMOTE
AR3205
5.1
1/16W
EOS_HDMI_TMDS_5.1OHM
AR3206
5.1
1/16W
EOS_HDMI_TMDS_5.1OHM
R3206
100K
MMBT3904(NXP)
VA3207
ESD_HDMI
Q3203
R32101K1/16W
C
E
AR3208
100
1/16W
VA3208
ESD_HDMI
5%
B
CK-_HDMI2
CK+_HDMI2
D0-_HDMI2
D0+_HDMI2
D1-_HDMI2
D1+_HDMI2
D2-_HDMI2
D2+_HDMI2
R3211
1K
1/16W
5%
DDC_SCL_2
DDC_SDA_2
VA3209
ESD_HDMI
R3212
4.7K
HDMI_INT_EDID
R3213
4.7K
HDMI_EXT_EDID
HDMI_HPD_5V_2_CBUS
+5V_NORMAL
R3214
47K
R3215
47K
C3205
1uF
25V
R3216
ARC
R3217
HDMI_ARC
180
82
HDMI2_SIDE With ARC
+5V_NORMAL
5V_HDMI_3
D3205
MMBD6100_SUZHOU
AR3201
47K
A2CA1
1/16W
DDC_SDA_3
DDC_SCL_3
A2CA1
D3205-*1
KDS184_KEC
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.
HDMI_EXT_EDID
MMBT3904(NXP)
IC3201
AT24C02C-SSHM-T
A0
1
A1
2
A2
3
GND
4
HDMI_EXT_EDID_ATMEL
8
7
6
5
Q3202
VCC
WP
SCL
SDA
E
C
HDMI_EXT_EDID
HDMI_EXT_EDID
B
HDMI_EXT_EDID
R3207
4.7K
R3208
33
R3209
33
EDID_WP
5V_HDMI_2
AR3207
47K
1/16W
+5V_NORMAL
A2CA1
MMBD6100_SUZHOU
D3200
DDC_SCL_2
DDC_SDA_2
A2CA1
KDS184_KEC
D3200-*1
HDMI LEAKAGE Workaround in MTK A2(A0) (Default= with HDMI_LEAKAGE)
VDD3V3
R3219
OPT
0
1/16W
5%
PANEL_VCC
R3218
G
S
Q3204-*1
AO3428_ALPHA
D
10K
G
D
S
Q3204
NTR4501NT1G_Onsemi
VDD3V3_HDMI
C3202
0.1uF
16V
A5LR_Bring_Up
HDMI
2014.11.01
32
Page 26
SPDIF OUT
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
+3.3V_NORMAL
RIN1
TP3400
RIN1
HP OUT
+3.3V_NORMAL
E_SPRING
HP_JACK
JK3402
PEJ034-01
3
SPDIF_OUT
SOC_RX
SOC_TX
R3400
33
R3401
2.7K
OPT
C3400
0.1uF
16V
+3.4V_ST
OPT
R3402
10K
R3416
10K
GND
VCC
VINPUT
OPT
Fiber Optic
1
2
3
JK3400
JST1223-001
4
FIX_POLE
P3400
12507WS-04L
1
2
3
4
5
DOUT1
HP_ROUT
HP_LOUT
HP_DET
HP_ROUT_AMP
HP_LOUT_AMP
TP3401
INT_HP_OUT
R3403-*1
DOUT1
HP_OUT
INT_HP_OUT
R3404-*1
5.1
R3403
0
R3404
0
R3405
100
EXT_HP_OUT
EXT_HP_OUT
5.1
Internal HP OUT
1K
1K
R3412
INT_HP_OUT
R3413
INT_HP_OUT
INT_HP_OUT
INT_HP_OUT
22uF
HP_OUT
VA3408
5.6V
C3402
25V
22uF25V
C3403
HP_OUT
HP_OUT
VA3409
5.6V
INT_HP_AMP
INT_HP_AMP
R3406
10K
R3414
0
R3415
0
VA3400
5.6V
HP_OUT
HP_ROUT_SOC
HP_LOUT_SOC
R_SPRING
T_SPRING
B_TERMINAL2
T_TERMINAL2
4
5
7B
6B
UART for Debug
NON Shield_COMP
JK3401-*1
PPJ245-31
[RD2]E-LUG
6E
[RD2]O-SPRING
5E
[RD2]CONTACT
4E
[WH]O-SPRING
5D
[RD1]CONTACT
4C
[RD1]O-SPRING
5C
[RD1]E-LUG-S
7C
[BL]O-SPRING
5B
[GN/YL]CONTACT
4A
[GN/YL]O-SPRING
5A
[GN/YL]E-LUG
6A
AV/COMPONENT REAR
Shield_COMP
PPJ245N2-01
JK3401
[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
VA3401
5.5V
VA3403
5.5V
VA3402
5.6V
VA3405
5.5V
COMP1_Pb
COMP1_Pr
COMP1/AV1/DVI_L_IN
COMP1/AV1/DVI_R_IN
VA3404
5.6V
Place JACK Side
R3409
0
+3.3V_NORMAL
R3407
10K
R3408
VA3406
5.6V
1K
+3.3V_NORMAL
VA3407
5.6V
R3410
10K
AV1_CVBS_DET
R3411
1K
C3401
150pF
OPT
COMP1_DET
COMP1_Y/AV1
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.
A5LR_Bring_Up
JACK
2014.11.01
34
Page 27
EYE_SDA
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
EYE_SCL
R4007
0
R4008
0
C4006
5pF
50V
OPT
OPT
+3.4V_WIFI
C4008
0.1uF
WIFI_DM
WIFI_DP
C4009
0.1uF
R4009
10K
5%
+3.4V_ST
OPT
R4010
10K
5%
R4011
R4012
WIFI POWER ENABLE CONTROL
+3.4V_ST
C4010
100
KEY1
100
KEY2
WIFI_EN
0.1uF
R4014
R4013
10K
OPT
33
C4011
0.1uF
16V
IN
EN
IC4001
AP2191WG-7
5
4
OUT
1
GND
2
FLG
3
+3.4V_WIFI
OPT
30K
R4015
P4000
SMAW200-H14S5K
GND
1
M_RESET
R4001
100
R4002
100
+3.4V_ST
R4005
10K
IR
5%
C4002
100pF
50V
LED_R
GND
SDA
SCL
IR
3
5
7
9
11
13
2
4
6
8
10
12
14
3.4V_WIFI
USB_DM
USB_DP
KEY1
KEY2
+3.5V_ST
GND
L4000 Delete for voltage drop, 131120
C4007
22uF
10V
C4004
Place Near Wafer
5pF
50V
D4000
RCLAMP0502BA
OPT
OPT
C4003
1000pF
50V
OPT
C4005
0.1uF
+3.4V_ST
IC4000
AO-R123C7G-LG
GND
G
VS
V
OUT
O
IR_PROTO
LED_R
R4000
330
IR_PROTO
+3.4V_ST
1/16W
5%
R4003471/10W
IR_PROTO
IR
R4004
1.8K
C4000
0.1uF
16V
5%
15
OPT
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.
A5LR_Bring_Up
IR / KEY / WIFI
2014.11.01
40
Page 28
USB_DM1
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
USB_DP1
+5V_USB_1
R4300
2.2
R4301
2.2
C4301
10uF
5V
10V
ZD4301
OPT
USB_ESD_SD05
C4303
22uF
10V
C4305
22uF
10V
USB1
MAX 1.5A
3AU04S-305-ZC-(LG)
D4302
RCLAMP0502BA
JK4300
1234
USB DOWN STREAM
5
+5V_USB_2
USB_DM2
USB_DP2
5V
ZD4300
USB_ESD_SD05
R4302
2.2
R4303
2.2
C4300
10uF
10V
OPT
C4302
22uF
10V
C4304
22uF
10V
USB2
MAX 1.5A
D4303
RCLAMP0502BA
3AU04S-305-ZC-(LG)
JK4301
1234
USB DOWN 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.
A5LR_Bring_Up
USB
2014.11.01
43
Page 29
Ethernet Block
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
JK5000
RJ45VT-01SN002
1
2
3
4
5
6
7
8
9
9
0.1uF
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
C5000
16V
1
2
3
4
5
6
7
8
D5000
5.5V
LAN_ESD
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.
A5LR_Bring_Up
ETHERNET
2014.11.01
50
Page 30
AUDIO AMP(NTP7515)
Copyright ⓒ 2015 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
A5LR_Bring_Up
AUDIO AMP
SPK_L+
SPK_L-
SPK_R+
SPK_R-
4
3
2
1
P5600
Black : Box_Type
2014.11.01
56
Page 31
EARPHONE AMP
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
IC6100
TPA6138A2
HP_ROUT_SOC
EXT_HP_OUT
SIDE_HP_MUTE
EXT_HP_OUT
C6100
1uF
10V
HP_ROUT_AMP
R6100
10K
HP_OUT_MUTE
R6107
C6101
180pF
EXT_HP_OUT
+3.3V_NORMAL
0
EXT_HP_OUT
EXT_HP_OUT
1%
R6101
33K
4.7K
R6103
EXT_HP_OUT
R6102
43K
1%
EXT_HP_OUT
EXT_HP_OUT
C6103
10pF
50V
C6102
1uF
10V
+INR
-INR
OUTR
GND_1
MUTE
VSS
CN
EXT_HP_OUT
1
EXT_HP_OUT
2
3
4
5
6
7
C6104
1uF
10V
14
13
12
11
10
9
8
+INL
-INL
EXT_HP_OUT
OUTL
UVP
GND_2
VDD
CP
EXT_HP_OUT
C6105
10pF
50V
EXT_HP_OUT
EXT_HP_OUT
R6104
43K
1%
+3.3V_NORMAL
C6107
180pF
1%
R6105
33K
EXT_HP_OUT
EXT_HP_OUT
C6106
1uF
10V
EXT_HP_OUT
R6106
10K
C6108
0.1uF
16V
C6109
1uF
10V
EXT_HP_OUT
HP_LOUT_AMP
HP_LOUT_SOC
HP_LOUT_AMP
HP_ROUT_AMP
HP_EMS
L6101
BLM18PG121SN1D
INT_HP_EMS
C6113
0.22uF
10V
INT_HP_EMS
C6112
0.22uF
10V
HP_NON_EMS
L6101-*1
0
HP_EMS
L6100
BLM18PG121SN1D
HP_NON_EMS
L6100-*1
0
Place at JACK SIDE
EXT_HP_OUT
C6111
0.22uF
10V
EXT_HP_OUT
C6110
0.22uF
10V
HP_LOUT
INT_HP_EMS
C6111-*1
4.7uF
10V
HP_ROUT
INT_HP_EMS
C6110-*1
4.7uF
10V
INT H/P OUT_NON EMS
INT H/P OUT_EMS
EXT H/P OUT
RS-232C
C6112
C6113
N/A
INT_HP_EMS
N/A
N/A
L6100
L6101
HP_NON_EMS
HP_EMS
HP_EMS
N/A
C6110
C6111
N/A
INT_HP_EMS
EXT_HP_OUT
N/A
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.
A5LR_Bring_Up
EARPHONE AMP
2014.11.01
61
Page 32
FE_DEMOD1_TS_ERROR
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3. Signal Width >= 12mils
Signal to Signal Width = 12mils
Ground Width >= 24mils
IF_AGC
TU_SIF_TU
I2C_SCL4
I2C_SDA4
TU_ALL_2178B
C6513
0.1uF
16V
+3.3V_TUNER
TU_ALL_2178B
R6510
200
B
TU_ALL
0
R6512
TU_ALL_2178B
TU_ALL_2178B
R6511
E
CVBS_TR_NXP
Q6500
MMBT3906(NXP)
C
+3.3V_NORMAL
L6504
BLM18PG121SN1D
TU_ALL
C6501
22uF
10V
85C
1608 perallel
because of derating
200
TU_CVBS
+3.3V_TUNER
E
CVBS_TR_KEC
Q6500-*1
2N3906S-RTK
B
C
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.
A5LR_Bring_Up
TUNER_1
2014.11.01
65
Page 33
TU_H_KR/US
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
TU6401
TDJH-H301F
TU_K_TW
TU6403
TDJK-T301F
TU_M_AJ
TU6402
TDJM-G305D
A1
TU_GND_A
+3.3V
1
NC_1
2
DIF_AGC
3
SCL_RF
4
SDA_RF
5
DIF[P]
6
DIF[N]
7
SIF
8
CVBS
9
A1
B1
B1
47
SHIELD
TU_GND_B
TU_H_AJ
TU6401-*1
TDJH-G301D
+3.3V
1
NC_1
2
IF_AGC
3
SCL_RF
4
SDA_RF
5
IF[P]
6
IF[N]
7
SIF
8
CVBS
9
A1
A1
47
SHIELD
B1
B1
TU_GND_A
A1
A1
47
SHIELD
B1
1
2
3
4
5
6
7
8
9
+3.3V
NC
DIF_AGC
SCL_RF
SDA_RF
DIF[P]
DIF[N]
SIF
CVBS
B1
TU_GND_B
+3.3V
1
NC_1
2
NC_2
3
SCL_RF
4
SDA_RF
5
NC_3
6
NC_4
7
SIF
8
CVBS
9
NC_5
10
+3.3V_RF
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
+3.3V_DEMOD
26
SCL_DEMOD
27
+1.2V_DEMOD
28
NC_6
29
SDA_DEMOD
30
+3.3V_LNA_TU
IF_AGC_TU
I2C_SCL2_TU
I2C_SDA2_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
C6402
Country
US
CN
R6403
0
TU_H/M_KR/US/AJ/CN
R6401C6409
C6401C6410
R6403
0ohm
22ohm
R6401
22
R6401-*1
TU_CN
X
X
TU_GND_A
0
0ohm
0ohm
0ohm
TU_H/M/W
R6402
22
TU_H/M_KR/US/BR/CO/TW
X
0ohm0ohmAJJA
X
1000pF
TU_H/M_BR/CO/TW/CN
C6401
1000pF
630V
TU_H/M_BR/CO/TW
C6401-*1
0
TU_H/M_AJ
1000pF
C6402
C6402 0ohm
1000pFBR/CO/TW
TU_GND_B
C6402
1000pF
630V
TU_H/M_CN/AJ
C6409
1000pF
630V
TU_H/M/W
R6402-*1
0
R6402
22ohm
22ohm
1000pF
1000pF
1000pF
1000pF
C6410
1000pF
630V
TU_H/M/W
1000pF
1000pF
1000pF
1000pFX
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.
+3.4V_ST
L6700
BLM18PG121SN1D
TU_M/W
TU_M/W
C6700
0.1uF
POWER_ON/OFF2_2
TU_M/W
10K
R6700
TU_M/W
C6703
10uF
+5V_NORMAL
10V
TU_M/W
C6705
1uF
10V
TU_M/W
IC6700
POK
BIAS
EN
IN
TJ2132GDP
1
2
3
2A
4
9
THERMAL
8
7
6
5
[EP]GND
GND
FB
OUT
SS
Vout=0.6*(1+R2/R1)
TU_GND_A
C6707
2700pF
50V
A1
C6708
0.01uF
50V
B1
A1
B1
47
SHIELD
TU_GND_B
D_Demod_Core
R6706-*1
TU_M/W
C6709
10uF
10V
10.5K
TU_M/W_1.1V
R6705-*1
9.1K
TU_M/W_1.1V
TU_M/W_1.2V
R1
10K
R67 06
R2
R67 05
10. 5K
TU_M/W_1.2V
TU_M_BR
TU6402-*1
TDJM-B301F
+3.3V
1
NC_1
2
NC_2
3
SCL_RF
4
SDA_RF
5
NC_3
6
NC_4
7
SIF
8
CVBS
9
NC_5
10
+3.3V_RF
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
+3.3V_DEMOD
26
SCL_DEMOD
27
+1.2V_DEMOD
28
NC_6
29
SDA_DEMOD
30
A1
B1
B1
A1
47
SHIELD
A5LR_Bring_Up
TUNER_2
TU_M_CO
TU6402-*2
TDJM-K302F
+3.3V
1
NC_1
2
NC_2
3
SCL_RF
4
SDA_RF
5
NC_3
6
NC_4
7
SIF
8
CVBS
9
NC_5
10
+3.3V_RF
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
+3.3V_DEMOD
26
SCL_DEMOD
27
+1.2V_DEMOD
28
NC_6
29
SDA_DEMOD
30
A1
B1
B1
A1
47
SHIELD
TU_CHINA
TU6402-*3
TDJM-C401D
+3.3V
1
NC_1
2
NC_2
3
SCL_RF
4
SDA_RF
5
NC_3
6
NC_4
7
SIF
8
CVBS
9
NC_5
10
+3.3V_RF
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
+3.3V_DEMOD
26
SCL_DEMOD
27
+1.2V_DEMOD
28
NC_6
29
SDA_DEMOD
30
A1
B1B1A1
47
SHIELD
2014.11.01
67
Page 34
LVDS
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
[51Pin LVDS OUTPUT Connector]
P7200
SP14-11592-01-51Pin
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
FHD_LVDS
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
L7200
UBW2012-121F
AUO_SHARP
VCOM_SDA
VCOM_SCL
TXA0N
TXA0P
TXA1N
TXA1P
TXA2N
TXA2P
TXACLKN
TXACLKP
TXA3N
TXA3P
TXA4N
TXA4P
TXB0N
TXB0P
TXB1N
TXB1P
TXB2N
TXB2P
TXBCLKN
TXBCLKP
TXB3N
TXB3P
TXB4N
TXB4P
LVDS_SEL
+3.3V_NORMAL
R7204
3.3K
LVDS_SEL_HIGH
R7202
10K
LVDS_SEL_LOW
H or FLOAT : 10-bit
L : 8-bit
BIT_SEL
R7203
10K
BIT_SEL_LOW
VCOM_SDA
VCOM_SCL
PANEL_VCC
VCOM
VCOM
R7200
R7201 0
[30Pin LVDS Connector]
(For HD 60Hz_Normal)
0
I2C_SDA1
I2C_SCL1
HD_LVDS
P7201
10031HR-30
31
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
VCOM_SDA
VCOM_SCL
TXA0N
TXA0P
TXA1N
TXA1P
TXA2N
TXA2P
TXACLKN
TXACLKP
TXA3N
TXA3P
PANEL_VCC
LVDS_SEL
+3.3V_NORMAL
OPT
R7205
3.3K
OPT
R7206
10K
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.
A5LR_Bring_Up
LVDS
2014.11.01
23
Page 35
eMMC I/F
Copyright ⓒ 2015 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.
A5LR_Bring_Up
eMMC
2014.11.01
81
Page 36
RS-232C Control INTERFACE
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
+3.4V_ST
RS232C
R11201
100
RS232C
R11200
100
DOUT1
RIN1
RS232C
RS232C
RS232C
RS232C
C11200
0.1uF
C11201
0.1uF
C11202
0.1uF
C11203
0.1uF
C1+
C1-
C2+
C2-
DOUT2
RIN2
V+
V-
RS232C
IC11200
MAX3232CDR
1
2
3
4
5
6
7
8
EAN41348201
OPT
VA11200
ADUC 20S 02 010L
RS232C
C11204
0.1uF
VCC
16
GND
15
DOUT1
14
RIN1
13
ROUT1
12
DIN1
11
DIN2
10
ROUT2
9
SOC_RX
SOC_TX
20V
OPT
VA11201
ADUC 20S 02 010L
20V
GND JIG POINT
JP11204
JP11202
JP11203
JP11201
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.
A5LR_Bring_Up
RS232C
2014.11.01
112
Page 37
Page 38
TROUBLE SHOOTING
< Applicable Model >
- LJ50H
**LF59*-S*
- LT50H
**LF59*-D*
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Page 41
Normal
voltage?
Check voltages of
Power Board
( D13V,A13V)
No Video/No audio
Check and
replace
MAIN B/D
Y
Replace Power
Board and repair
parts
N
End
Standard Repair Process
A. Video error
No video/ No audio
☞A5
Established
date
Revised date
2/13
Error
symptom
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Page 42
Picture Problem, Picture broken/ Freezing
Y
N
☞ A6
N
Check RF Signal level
Normal
Signal?
Check RF Cable
Connection
1. Reconnection
2. Install Booster
Check
S/W Version
S/W Upgrade
Check whether other equipments have problem or not.
(By connecting RF Cable at other equipment)
ex) DVD Player ,Set-Top-Box, Different maker TV etc`
SVC
Bulletin?
Replace
Main B/D
Check
Tuner soldering
Normal
Picture?
Y
N
Y
Close
Y
Close
. By using Digital signal level meter
. By using Diagnostics menu on OSD
( Menu→ Quick→ Channels → Signal Test )
- Signal strength (Normal:over 50%)
- Signal Quality (Normal:over 50%)
Normal
Picture?
Y
Contact with signal distributor
or broadcaster (Cable or Air)
N
Normal
Picture?
Y
Close
N
☞ A7
Standard Repair Process
Established
date
Revised date
3/13
Error
symptom
A. Video error
Normal
Picture?
N
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Page 43
Color
error?
Y
N
※ Check and
replace Link
Cable
(LVDS) and
contact
condition
Y
N
Replace Main B/D
Color
error?
Check error color
input mode
Check color by input
-External Input
-COMPONENT
-HDMI
Y
External device
/Cable
normal
External Input/
Component
error
Check
external
device and
cable
Y
External device
/Cable
normal
HDMI
error
Check external
device and
cable
Replace Main B/D
Replace Main B/D
N
N
A. Video error
Color error
☞A8
N
Y
End
Replace module
Request repair
for external
device/cable
Color
error?
Check Test pattern
☞A12
Standard Repair Process
Established
date
Revised date
4/13
Error
symptom
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Page 44
Screen
normal?
N
Y
Check external
device
connection
condition
Y
N
Check and
replace Link
Cable
Normal?
Y
N
Screen
normal?
Replace
module
Check color condition by input
-External Input
-Component
-HDMI
End
Vertical/Horizontal bar, residual image, light spot
Request repair
for external
device
A. Video error
Vertical / Horizontal bar, residual image,
light spot, external device color error
☞A12
External device screen error-Color error
External
Input
error
Connect other external
device and cable
(Check normal operation of
External Input, Component
and HDMI by connecting Jig,
pattern Generator ,Set-top
Box etc.
N
Y
Replace
Main B/D
Screen
normal?
Check screen
condition by input
-External Input
-Component
-HDMI
Request repair for
external device
Component
error
HDMI
Connect other external
device and cable
(Check normal operation of
External Input, Component
and HDMI by connecting Jig,
pattern Generator ,Set-top
Box etc.
Replace
Main B/D
Screen
normal?
N
Y
Check S/W Version
Y
N
Check
version
S/W Upgrade
Y
N
Normal
screen?
End
Y
N
Replace Main B/D
Replace
Module
Screen
normal?
End
Established
date
Revised date
5/13
Error
symptom
Standard Repair Process
☞A8
Check Test pattern
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Page 45
B. Power error
No power
Power LED
On?
Y
N
DC Power on
by pressing Power Key
On Remote control
Y
N
Normal
operation?
Check Power
On “High”
Check Power cord
was inserted properly
Check
Power LED
Replace
Power
B/D
Measure voltage of each output of Power B/D
N
Y
Normal
voltage?
Replace Main B/D
Y
OK?
Replace Main B/D
N
Y
Normal?
Check ST-BY Voltage
(D13V)
Replace Power B/D
N
Y
Normal
voltage?
Replace Power
B/D
Y
☞A17
☞A18
☞A5
Standard Repair Process
Established
date
Revised date
6/13
Error
symptom
. Stand-By: Red or No color
※
Close
☞A18
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Page 46
B. Power error
Off when on, off while viewing, power auto on/off
Error?
N
Y
Check Power Off
Mode
Fix A/C cord & Outlet
and check each 3
phase out
Check A/C cord
Check for all 3- phase
power out
Check outlet
Replace Main B/D
CPU
Abnormal
(If Power Off mode is
not displayed)
Check Power B/D
voltage
Y
N
Replace Main B/D
Normal
voltage?
Replace Power B/D
Replace Power B/D
N
Y
Normal?
End
※ Caution
Check and fix exterior
of Power B/D Part
☞A22
Established
date
Revised date
7/13
Error
symptom
Standard Repair Process
Status Power off List Explanation
Normal
"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
"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_SWDOWN" Power off by S/W Download
"POWEROFF_UNKNOWN" Power off by unknown status except listed case
Abnormal
"POWEROFF_ABNORMAL1" Power off by abnormal status except CPU trouble
"POWEROFF_CPUABNORMAL" Power off by CPU Abnormal
* Please refer to the all cases which
can be displayed on power off mode.
Abnormal
1
☞A5
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Page 47
No audio
Screen normal
Check user
menu >
Speaker off
Off
N
Y
Cancel OFF
Check A13V of Power
Board
Normal
voltage
Y
N
Replace Power Board and repair parts
Check Speaker
disconnection
N
Y
Connect Speaker to Main cable
Replace MAIN Board
End
C. Audio error
No audio/ Normal video
☞A24
☞A25
Disconnection
Established
date
Revised date
8/13
Error
symptom
Standard Repair Process
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Page 48
→ Abnormal audio/discontinuation/noise is same after “Check input signal” compared to No audio
C. Audio error
Wrecked audio/ discontinuation/noise
Wrecked audio/
Discontinuation/
Noise for
all audio
Check and replace
speaker and
connector
Wrecked audio/
Discontinuation/
Noise only
for D-TV
Wrecked audio/
Discontinuation/
Noise only
for Analog
Wrecked audio/
Discontinuation/
Noise only
for External Input
Connect and check
other external device
N
Y
Normal
audio?
Check and fix external device
Replace Power B/D
N
Y
Normal
voltage?
Check input
signal
-RF
-External Input
signal
Signal
normal?
(When RF signal is not
received)
Request repair to external
cable/ANT provider
Y
Check A13V Voltage
Replace Main B/D
(In case of External
Input signal error)
Check and fix
external device
Replace Main B/D
N
End
Established
date
Revised date
9/13
Error
symptom
Standard Repair Process
☞A25
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Page 49
Normal/Motion Remote Controller operating error
Y
N
1. Normal Remote control(R/C) operating error
Check R/C itself
Operation
Normal
operating?
Normal
operating?
Y
Replace R/C
If R/C operate,
Explain the customer
cause is interference
from light in room.
Check R/C Operating
When turn off light
in room
Check & Replace
Baterry of R/C
Check & Repair
Cable connection
Connector solder
Normal
operating?
Check 13V
On Main B/D
☞A27
Normal
Voltage?
Close
N
N
Check 13V on Power B/D
Replace Power B/D or
Replace Main B/D
(Power B/D don’t have problem)
☞A5
Check IR
Output signal
Normal
Signal?
N
Y
Repair/Replace
IR B/D
N
☞A27
Replace
Main B/D
Y
☞A27
Standard Repair Process
Established
date
Revised date
10/13
Error
symptom
Y
Y
N
2. Motion Remote control operating error
Check Motion R/C
itself Operation
Normal
operating?
Y
Check R/C Operating
When turn off light
in room
Check & Replace
Baterry of R/C
Check & Repair
Cable connection
Connector solder
Normal
operating?
Check
3.5V_WIFI
On Main B/D
☞A29
Normal
Voltage?
Close
N
Check 13V on Power B/D
Replace Power B/D or
Replace Main B/D
(Power B/D don’t have problem)
☞A5
Check B/T
Version
Version
Value OK?
N
Y
Repair/Replace
Wi-Fi B/T combo B/D
N
☞A29
Replace
Main B/D
Y
☞A29
Normal
operating?
Replace R/C
N
Y
If R/C operate,
Explain the customer
cause is interference
from light in room.
D. Function error
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Page 50
Check technical
information
- Fix information
- S/W Version
N
Y
Technical
information?
Check
input
signal
Signal
input?
Y
N
External Input and
Component
Recognition error
Check and fix
external device/cable
HDMI/
Optical
Recognition error
Replace Main B/D
Replace Main B/D
Fix in
accordance
with technical
information
D. Function error
External device recognition error
Established
date
Revised date
11/13
Error
symptom
Standard Repair Process
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Page 51
Check location
of noise
Identify
noise type
Circuit
noise
Replace PSU(with LED driver)
Replace LED driver
Mechanical
noise
Check location of
noise
OR
※ When the noise is severe, replace the module
(For models with fix information, upgrade the S/W or
provide the description)
OR
※If there is a “Tak Tak” noise from the cabinet,
refer to the KMS fix information and then proceed
as shown in the solution manual
(For models without any fix information, provide
the description)
OR
※ Mechanical noise is a natural
phenomenon, and apply the 1st level
description. When the customer does not
agree, apply the process by stage.
※ Describe the basis of the description in
“Part related to noise” in the Owners Manual.
E. Noise
Circuit noise, mechanical noise
Established
date
Revised date
12/13
Error
symptom
Standard Repair Process
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Page 52
Replace module
Zoom part with
exterior damage
Module
damage
Cabinet
damage
Replace cabinet
Replace remote controller
Remote
controller
damage
Stand
dent
Replace stand
F. Exterior defect
Exterior defect
Established
date
Revised date
13/13
Error
symptom
Standard Repair Process
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Only for training and service purposes
LGE Internal Use Only
Page 53
Contents of Standard Repair Process Detail Technical Manual
No. Error symptom Content Page Remarks
1
A. Video error_ No video/Normal audio
Check LCD back light with naked eye A1
2 LED driver B+ 24V measuring method
3 Check White Balance value A4
4 Power Board voltage measuring method A5
6
A. Video error_ No video/Video lag/stop
TUNER input signal strength checking method A6
7 Version checking method A7
9
A. Video error_Color error
connection diagram A8
10 Tuner Checking Part A9
11
Check Link Cable (LVDS/EPI) reconnection
condition
12 Adjustment Test pattern - ADJ Key A12
13
A. Video error_Vertical/Horizontal bar,
residual image, light spot
connection diagram A8
14
Check Link Cable (LVDS/EPI) reconnection
condition
15 Adjustment Test pattern - ADJ Key A12
16
<Appendix>
Defected Type caused by T-Con/ Inverter/
Module
Exchange T-Con Board (1) A-1/5
17 Exchange T-Con Board (2) A-2/5
18 Exchange LED driver Board (PSU) A-3/5
19 Exchange Module itself (1) A-4/5
20 Exchange Module itself (2) A-5/5
Continue to the next page
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Page 54
Contents of Standard Repair Process Detail Technical Manual
No. Error symptom Content Page Remarks
21
B. Power error_No power
Check front display LED A17
22 Check power input Voltage & ST-BY Voltage A18
23 Checking method when power is ON A18
24 POWER BOARD voltage measuring method A5
25
26
B. Power error_Off when on, off while
viewing
POWER OFF MODE checking method A22
27
B. Power error_Off when on, off while
viewing
POWER BOARD PIN voltage checking method A18
28
C. Audio error_No audio/Normal video
Checking method in menu when there is no
audio
A24
29
Voltage and speaker checking method when
there is no audio
A25
30
C. Audio error_Wrecked
audio/discontinuation
Voltage and speaker checking method in case of
audio error
A25
31
D. Function error_ No response in remote
controller
Normal Remote controller operation checking
method
A27
Motion Remote controller operation checking
method
A29
Continued from previous page
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Page 55
Standard Repair Process Detail Technical Manual
Check White Balance value
A. Video error_No video/Normal audio
<ALL MODELS>
A4
Established
date
Revised
date
Error
symptom
Content
Entry method
1. Press the ADJ button on the remote controller for adjustment.
2. Enter into White Balance of item 10.
3. After recording the R, G, B (GAIN, Cut) value of Color Temp (Cool/Medium/Warm),
re-enter the value after replacing the MAIN BOARD.
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes