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
module 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 sol-
der 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 specification sheet is applied to all of the LED TV with
LD5CB chassis.
2. Designation
(1) The adjustment is according to the order which is designated
and which must be followed, according to the plan
can be changed only on agreeing.
(2) Power adjustment : Free Voltage.
(3) Magnetic Field Condition: Nil.
(4) Input signal Unit: Product Specification Standard.
(5) Reserve after operation : Above 5 Minutes (Heat Run)
Temperature : at 25 °C ± 5 °C
Relative humidity : 65 ± 10 %
Input voltage : 220 V, 60 Hz
(6) Adjustment equipments: Color Analyzer(CA-210 or CA-110),
DDC Adjustment Jig, Service remote control.
(7) Push the "IN STOP" key - For memory initialization.
Case1 : Software version up
1. After downloading S/W by USB , TV set will reboot
automatically.
2. Push “In-stop” key.
3. Push “Power on” key.
4. Function inspection
5. After function inspection, Push “In-stop” key.
Case2 : Function check at the assembly line
1. When TV set is entering on the assembly line, Push
“In-stop” key at rst.
2. Push “Power on” key for turning it on.
→ If you push “Power on” key, TV set will recover
channel information by itself.
3. After function inspection, Push “In-stop” key.
which
3. Main PCB check process
▪ APC - After Manual-Insert, executing APC
* Boot file Download
(1) Execute ISP program "Mstar ISP Utility" and then click
"Config" tab.
(2) Set as below, and then click "Auto Detect" and check "OK"
message.
If "Error" is displayed, check connection between computer,
jig, and set.
(3) Click "Read" tab, and then load download file(XXXX.bin)
by clicking "Read".
(4) Click "Connect" tab. If "Can't" is displayed, check connection
between computer, jig, and set.
(2)
(3)
Please Check the Speed :
To use speed between
from 200KHz to 400KHz
(5) Click "Auto" tab and set as below.
(6) Click "Run".
(7) After downloading, check "OK" message.
(4)
filexxx.bin
(5)
(7)...........OK
(6)
* USB DOWNLOAD
(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 Low,
it didn't work. But your downloaded version is High, USB
data is automatically detecting.
(3) Show the message "UPDATING".
(4) Updating is starting.
(1)
filexxx.bin
Only for training and service purposes
- 10 -
(5) Updating Completed, The TV will restart automatically in 5
seconds.
(6) If your TV is turned on, check your updated version and
Tool option. (explain the Tool option, next stage)
* 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, have to adjust Tool Option again.
(1) Push "IN-START" key in service remote control.
(2) Select "Adjust Check" and push "OK" key.
(3) Punch in the number. (Each of model has their number)
(4) Completed selecting Tool option.
3.1. ADC Process(Optional)
* If ADC processes as OTP, There is no need to proceed
internal ADC.
(1) Enter Service Mode by pushing "ADJ" key,
(2) Enter Internal ADC mode by pushing "►" key at "8. ADC
Calibration".
<Caution> Using "P-ONLY" key of the Adjustment remote
control, power on TV.
* ADC Calibration Protocol (RS232)
NOItemCMD 1 CMD 2 Data 0
Enter Adjust
MODE
ADC adjust
Adjust
‘Mode In’
ADC
Adjust
AA0 0
AD1 0
When transfer the ‘Mode In’,
Carry the command.
Automatically adjustment
(The use of a internal pattern)
Adjust Sequence
▪ aa 00 00 [Enter Adjust Mode]
▪ xb 00 40 [Component Input]
▪ ad 00 10 [Adjust 480i & 1080p Comp]
▪ aa 00 90 End Adjust mode
* Required equipment : Adjustment R/C.
3.2. EDID Download
▪ After enter Service Mode by pushing "ADJ" key.
▪ Enter EDID D/L menu.
▪ Enter "START" by pushing "OK" key.
<Caution> Never connect HDMI cable when EDID downloaded.
3.3. EDID data
(1) RGB
1) HD RGB EDID DATA
0123456789A B C D E F
00 00 ffffffff ffff 00 1e 6dab
10c01 03 68 a0 5a 78 0a ee 91 a3 54 4c 99 26
20 0f 50 54 a1 08 00 71 40 61 40 45 40 31 40 01 01
30 01 01 01 01 01 01 1b 21 50 a0 51 00 1e 30 48 88
40 35 00 40 84 00 00 00 1c 01 1d 00 72 51 d0 1e 20
50 6e 28 55 00 a0 5a 00 00 00 1e 00 00 00 fd 00 3a
60 3e 1e 53 10 00 0a 20 20 20 20 20 20d
70d00 e
2) FHD RGB EDID DATA
0123456789A B C D EF
00 00 ffffffff ffff 00 1e 6dab
10c01 03 68 a0 5a 78 0a ee 91 a3 54 4c 99 26
20 0f 50 54 a1 08 00 31 40 45 40 61 40 71 40 81 80
30 01 01 01 01 01 01 02 3a 80 18 71 38 2d 40 58 2c
40 45 00 a0 5a 00 00 00 1e 66 21 50 B0 51 00 1B 30
50 40 70 36 00 a0 5a 00 00 00 1e 00 00 00 fd 00 3a
60 3e 1e 53 10 00 0a 20 20 20 20 20 20d
70d00 e
b. Serial No: Controlled on production line.
c. Month, Year: Week : '01' -> '01', Year : '2015' -> '19' fix
d. Model Name(Hex): Refer to the ASCII Code Table
cf) TV set’s model name in EDID data is below.
▪ Use only AUO/Sharp/CSOT (Cool temp Spec is 13000K)
Aging time
(Min)
spec271270286289313329
target278280293299320339
CoolMediumWarm
xyxyxy
▪ W/B information
Model informationW/B information
Chassis
or Model
Module Panel
Backlight
Type
Using W/B table
22/28LX**AllAllEdge LEDX
60LX**SharpSharpEdge LEDX
Direct LED
OhtersLGDLGD
or
O
Edge LED
▪ Auto adjustment Map(using RS-232C to USB cable)
RS-232C COMMAND
[CMD ID DATA]
Wb 00 00 White Balance Start
Wb 00 ff White Balance End
RS-232C COMMAND
[CMD ID DATA]
CoolMidWarmCool Mid Warm
R GainjgJajd00172192192254
G GainjhJbje00172192192192
B GainjiJcjf00192192172254
R Cut646464128
G Cut646464128
B Cut646464128
MIN
CENTER
(DEFAULT)
MAX
<Caution>
Color Temperature : COOL, Medium, Warm.
One of R Gain/G Gain/ B Gain should be kept on 0xC0, and
adjust other two lower than C0.(When R/G/B Gain are all
C0, it is the FULL Dynamic Range of Module)
* Manual W/B process using adjust Remote control.
▪ After enter Service Mode by pushing "ADJ" key,
▪ Enter White Balance by pushing "►" key at "9. White
Balance".
* Connecting picture of the measuring instrument
(On Automatic control)
Inside PATTERN is used when W/B is controlled. Connect to
auto controller or push Adjustment R/C P-ONLY → Enter the
mode of White-Balance, the pattern will come out.
Full White Pattern
RS-232C Communication
CA-210
COLOR
ANALYZER
TYPE : CA-210
* Auto-control interface and directions
(1) Adjust in the place where the influx of light like floodlight
around is blocked. (illumination is less than 10 lux).
(2) Adhere closely the Color analyzer(CA210) to the module
less than 10 cm distance, keep it with the surface of the
Module and Color analyzer's prove vertically.(90° +/-
2.5°).
(3) Aging time
- After aging start, keep the power on (no suspension of
power supply) and heat-run over 5 minutes.
- Using 'no signal' or 'POWER ONLY' or the others, check
the back light on.
* CASE Cool Mode
First adjust the coordinate far away from the target
value(x, y).B.
1) x, y > target
2) x, y < target
3) x >target, y < target
4) x < target, y > target
- Every 4 case have to fit y value by adjusting B Gain
and then fit x value by adjusting R-Gain.
- In this case, increasing/decreasing of B Gain and R
Gain can be adjusted.
How to adjust
1) In case G gain more than 172
Adjust R Gain and B Gain less than 192
2) If the G gain value be adjusted down to 172
One of the R/B Gain is 254
3) If G Gain is 172 , More than one of R/B Gain is to be
First adjust the coordinate far away from the target
value(x, y).
1) x, y > target
i) Decrease the R, G.
2) x, y < target
i) First decrease the B gain,
ii) Decrease the one of the others.
3) x > target, y < target
i) First decrease B, so make y a little more than the target.
ii) Adjust x value by decreasing the R
4) x < target, y > target
i) First decrease B, so make x a little more than the target.
ii) Adjust x value by decreasing the G
* After you finished all adjustments, Press "In-start" key and
compare Tool option and Area option value with its BOM, if
it is correctly same then unplug the AC cable. If it is not
same, then correct it same with BOM and unplug AC cable.
For correct it to the model's module from factory Jig model.
* Push the "IN STOP" key after completing the function
inspection. And Mechanical Power Switch must be set
“ON”.
4.2. IR emitter inspection
(1) Start 3D pattern inspection.
(2) If IR emitter signal is correctly received to IR receiver, the
lamp of IR tester turns on.
6. Model name & Serial number D/L
▪ Press "Power on" key of service remote control.
(Baud rate : 115200 bps)
▪ Connect RS232 Signal Cable to USB Jack.
▪ Write Serial number
▪ Must check the serial number at the Diagnostics of SET UP menu.
(Refer to below).
6.1. Signal Table
CMD LENGTH ADHADLDATA_1. . .Data_nCSDELAY
CMD : A0h
LENGTH : 85~94h (1~16 bytes)
ADH : EEPROM Sub Address high (00~1F)
ADL : EEPROM Sub Address low (00~FF)
Data : Write data
CS : CMD + LENGTH + ADH + ADL + Data_1 +...+ Data_n
Delay : 20ms
6.2. Command Set
No. Adjust mode CMD(hex) LENGTH(hex)Description
EEPROM
1
WRITE
* Description
FOS Default write : <7mode data> write
Vtotal, V_Frequency, Sync_Polarity, Htotal, Hstart, Vstart, 0,
Phase
Data write : Model Name and Serial Number write in EEPROM,.
A0h84h+nn-bytes Write (n = 1~16)
5. HI-POT Test
5.1. HI-POT auto-check preparation
- Check the POWER cable and SIGNAL cable insertion condition
5.2. 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) HI-POT test (Auto)
- If Test is failed, Buzzer operates.
- If Test is passed, GOOD Lamp on and move to next
process automatically.
5.3. Checkpoint
(1) Test voltage
- Touchable Metal : 3 KV / min at 100 mA
- SIGNAL : 3KV / min at 100 mA
(2) TEST time: 1 second. (case : mass production )
(3) TEST POINT
- Touchable Metal => LIVE & NEUTRAL : Touchable Metal.
- SIGNAL => LIVE & NEUTRAL : SIGNAL.
Only for training and service purposes
6.3. Method & notice
(1) Serial number D/L is using of scan equipment.
(2) Setting of scan equipment operated by Manufacturing
Technology Group.
(3) Serial number D/L must be conformed when it is produced in
production line, because serial number D/L is mandatory by
D-book 4.0.
If the TV set is downloaded by OTA or Service man, sometimes
model name or serial number is initialized.(Not always)
There is impossible to download by bar code scan, so It need
Manual download.
1) Press the "Instart" key of Adjustment remote controller.
2) Go to the menu "6.Model Number D/L" like below photo.
3) Input the Factory model name or Serial number like photo.
4) Check the model name Instart menu. → Factory name
displayed.
5) Check the Diagnostics.(DTV country only) → Buyer model
displayed.
7. MAC Address & CI+ key download
7.1 MAC Address
7.1.1 Equipment & Condition
▪ Play file : Serial.exe
▪ MAC Address edit
▪ Input Start / End MAC address
7.1.2 Download method
(1) Communication Prot connection
Connection: PCBA(USB Port) → USB to Serial Adapter(UC-
232A) → RS-232C cable → PC(RS-232C port)
* Caution: LJ21* chassis support only UC-232A driver. (only
use this one.)
(2) MAC Address & CI+ Key Download
▪ Set CI+ Key path Directory at Start Mac & CI+ Download
Programme
▪ Com 1,2,3,4 and 115200(Baudrate)
GP4_LOW
▪ Port connection button click(1)
▪ Push the (2) MAC Address write.
▪ At success Download, check the OK (3)
▪ Start CI+ Key Download, Push the (4)
▪ Check the OK or NG
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.
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
FROM POWER B/D 13.2V
+3.5V_ST
TR_NXP
MMBT3906(NXP)
R406
10K
R404
4.7K
TR_NXP
Q400
MMBT3904(NXP)
R419
100
TR_NXP
Q402
MMBT3904(NXP)
1
TVS_SEMTECH
RL_ON
INV_CTL
+3.5V_ST
R400
10K
R401
10K
OPT
+3.5V_ST
R426
10K
TR_KEC
Q400-*1
2N3904S
B
R402
10K
+3.3V_Normal
R425
10K
TR_KEC
Q402-*1
2N3904S
B
B
B
R420
C
E
C
E
C
E
1K
C
E
+13.2V to +3.5V_STANDBY
+13.2V
L412
BLM18PG121SN1D
C438
C439
10uF
0.1uF
25V
25V
R1
R46 9
R468
68K
6.8K
1/1 6W
1/16W
1%
1%
C440
100pF
50V
R2
R471
22K
1/16W
1%
C441
1uF
10V
C442
2200pF
Vout=0.765*(1+R1/R2)
Q401
ZD404
TVS_KEC
ZD404-*1
R470
10K
OPT
50V
3
2
5V
TR_KEC
Q401-*1
2N3906S-RTK
EBC
OPT
R412
33K
EN
R475
30K
FB
VREG
SS
PWR_ON
D13.2V
A13.2V
DRV_ON
BD9D321EFJ
1
2
3
4
3A
P401
SMAW200-H12S5K(BK)(LTR)
PDIM#2
1
2
GND
GND
IC405
9
THERMAL
D13.2V
4
3
D13.2V
5
6
A13.2V
7
8
GND
10
9
PDIM#1
11
12
13
[EP]
VIN
8
BOOT
7
SW
6
GND
5
C443
0.1uF
16V
R424
3.9K
L413
2uH
C444
22uF
PWM1_Pulldown_R
10V
PWM1_CAP
R467-*1
1000pF
50V
PWM1
R467
1K
L403
MLB-201209-0120P-N2
OPT
0.1 uF
L414
L415
MLB-201209-0120P-N2
PWM_DIM
+3.5V_ST
C445
22uF
10V
C40 2
25V
TVS_SEMTECH
TVS_KEC
ZD405-*1
OPT
C43 3
4.7 uF
C44 6
0.1 uF
ZD405
5V
50V
25V
+13.2V
+13.2V POWER_DET
R435
100K
RESET_IC_KEC
IC401
KIC7529M2
VCC
3
IC401-*1
RESET_IC_DIODES
APX803E29
VCC
3
A13.2V
C415
0.1uF
+13.2V
R430
14K
1%
R431
5.6K
1%
25V
+3.5V_Normal to +1.5V_DDR
+3.3V_Normal
L409
BLM18PG121SN1D
C426
10uF
10V
IC404
AZ1117EH-ADJTRG1
OUTIN
ADJ/GND
1.3A
Vout=1.25*(1+R2/R1)+Iadj*R2
+13.2V to PANEL_VCC+3.5V_ST to +3.3V_Normal
D
R451
5.6K
G
C
TR_KEC
Q403-*1
2N3904S
E
+3.3V_Normal
C405
10uF
25V
PANEL_VCC
R452
5.6K
C406
10uF
25V
2200pF
2200pF
C408
50V
C409
R409
+3.5V_ST
POWER_ON/OFF_1
R443
10K
R444
10K
B
R447
22K
R448
2.2K
C428
2.2uF
C
TR_NXP
Q404
MMBT3904(NXP)
E
Vout=0.6(R1/R2)+0.6
L405
4.7uH
25V
0.047uF
10
PGND2
LX2
C410
BST120LX121PGND1
19
COMP1
18
FB1
17
AGND
16
RSET
15
FB2
14
COMP2
13
11
12
BST2
+5V_Normal
C421
0.047uF
25V
R422
15K
L406
4.7uH
C407
1uF
OPT
OPT
50V
91K
10V
ROSC/SYNC
SW_EN
NFAULT
[EP]
SS2
1
EN1
2
EN2
3
SN1406035RGER
4
5
6
SW_OUT
THERMAL
25
7
SW_IN
VIN123V7V24SS1
IC400
8
VIN2
22
9
+3.5V_ST
OPT
R438
4.7K
R454
100
OUT
2
1
GND
RESET
2
1
GND
R449
1K
1/16W
1%
R450
200
1/16W
1%
CB2012PK501T
R1
R2
C431
10uF
R453
10V
0
C422
0.1uF
16V
+1.5V_DDR
L411
OPT
ZD403
2.5V
POWER_DET
POWER_DET_RESET
OPT
ZD406
5.1v
PANEL_CTL
+13.2V
L408
UBW2012-121F
120OHM
OPT
C425
0.1uF
25V
R441
R445
33K
R446
120K
B
C
TR_NXP
Q403
MMBT3904(NXP)
E
R442
10K
10K
NON_60_SHARP
C427
0.22uF
25V
Q405
SSM3J332R
S
60_SHARP
C427-*1
0.1uF
50V
B
+5V_Normal & +1.10V_VDDC
+13.2V
L404
CB2012PK501T
+3.3V_Normal
OPT
C403
4700pF
50V
Check the pull down
when AC Power On with HDD
+3.3V_Normal
R403
10K
OPT
OPT
R473
C404
30K
4700pF
50V
USB1_CTL
USB1_CTL_Pull_Down
USB1_OCD
R472
3.3K
R405
10K
OPT
R474
30K
OPT
R407
4.7K
R408
100K
+5V_Normal
10V
R41 8
FET_AOS
Q406-*1
AO3435
D
S
L410
ZD401
OPT
2.5V
C430
22uF
10V
R2
+3.3V_Normal
ZD402
5V
TVS_SEMTECH
TVS_KEC
ZD402-*1
OPT
C412
10uF
6.3V
C418
47pF
50V
+5V_Normal
C423
22uF
16V
C413
22uF
10V
C424
22uF
16V
+1.10V_VDDC
C414
22uF
10V
G
FET_TOSHIBA
Q406
SSM3J332R
BLM18PG121SN1D
D
S
C429
G
0.1uF
16V
C
TR_KEC
Q404-*1
B
2N3904S
E
R1
OPT
OPT
C411
R411
4.7K
1%
R2
R413
5.1K
1%
C419
22pF
50V
C420
3300pF
50V
20K
R41 4
ZD407
82pF
5.1v
50V
C416
22pF
50V
C417
3300pF
10K
50V
R415
0
5%
R416
5.1K
1%
R417
39K
1%
R1
+5V_USB
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.
C432
1uF
16V
L14_CA
POWER
Vout=0.6(R1/R2)+0.6
2014/12/03
4
USB (SIDE)
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
USB_HDD_CAP1_10uF
C700-*1
USB_HDD_CAP1_22uF
OPT
JK700
1234
USB DOW N ST REAM
3AU 04S- 305- ZC-( LG)
5
ZD700
SD05
C701
5V
OPT
OPT
C702
5pF
5pF
50V
50V
10uF
10V
USB_HDD_CAP2_10uF
C703-*1
USB_HDD_CAP2_22uF
C700
22uF
10V
OPT
D700
RCLAMP0502BA
10uF
10V
C703
22uF
10V
R700
2.2
R701
2.2
+5V_USB
OPT
C704
22uF
10V
SIDE_USB1_DM
SIDE_USB1_DP
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.
L14_CA_M1A
USB_S1
2014/05/20
7
HDMI (REAR 1 / SIDE 1 MHL)
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
HDMI_1
5V_HDMI_2
R802
1.8K
VA800
R803
1K
SHIELDGND
20
HP_DET
19
5V
18
GND
17
DDC_DATA
ESD_HDMI1_VARISTOR
16
DDC_CLK
15
NC
14
CE_REMOTE
13
CK-
12
CK_GND
11
CK+
10
EAG59023302
JK800
This GND Pattern should be very narrow
HDMI jack burnt problem improvement
9
8
7
6
5
4
3
2
1
D0-
D0_GND
D0+
D1-
D1_GND
D1+
D2-
D2_GND
D2+
5V_DET_HDMI_2
R805
3.3K
ESD_HDMI1_VARISTOR
VA801
ESD_HDMI1_CAP
VA800-*1
1uF
10V
ESD_HDMI1_CAP
VA801-*1
1uF
10V
AR801
5.1
AR802
5.1
MMBT3904(NXP)
ESD_HDMI1
VA802
TR_NXP
Q800
C
E
TR_KEC
Q800-*1
2N3904S
B
C
B
E
ESD_HDMI1
VA803
ESD_HDMI1_TMDS
IP4294CZ10-TBR
ESD_HDMI1_TMDS
IP4294CZ10-TBR
HDMI_2 MHL
5V_HDMI_4
R808
10K
R809
10K
R810 100
R811 100
ESD_HDMI1
VA804
D803
1
2
3
4
5
1
2
3
4
5
D804
10
9
8
7
6
10
9
8
7
6
HPD2
DDC_SDA_2
DDC_SCL_2
HDMI_ARC
HDMI_CEC
CK-_HDMI2
CK+_HDMI2
D0-_HDMI2
D0+_HDMI2
D1-_HDMI2
D1+_HDMI2
D2-_HDMI2
D2+_HDMI2
BODY_SHIELD
20
JK801-*1
DAADR019A
HDMI-2_EMI_FOOSUNG
GND
20
HP_DET
19
5V
18
GND
17
DDC_DATA
16
DDC_CLK
15
NC
14
CE_REMOTE
13
CK-
12
CK_GND
11
CK+
10
EAG62611204
HDMI-2
JK801
19
HOT_PLUG_DETECT
18
VDD[+5V]
17
DDC/CEC_GND
16
SDA
This GND Pattern should be very narrow
15
SCL
HDMI jack burnt problem improvement
14
RESERVED
13
CEC
12
TMDS_CLK-
11
TMDS_CLK_SHIELD
10
TMDS_CLK+
9
TMDS_DATA0-
8
TMDS_DATA0_SHIELD
7
TMDS_DATA0+
6
TMDS_DATA1-
5
TMDS_DATA1_SHIELD
4
TMDS_DATA1+
3
TMDS_DATA2-
2
TMDS_DATA2_SHIELD
1
TMDS_DATA2+
9
8
7
6
5
4
3
2
1
D0-
D0_GND
D0+
D1-
D1_GND
D1+
D2-
D2_GND
D2+
HDMI-2
R812
1.8K
5V_DET_HDMI_4
ESD_HDMI2
VA805
HDMI-2
R813
3.3K
ESD_HDMI2
VA806
OPT
VA807
5.6V
AR804
AR803
HDMI-2_MHL_Non
R819
0
5.1
5.1
ESD_HDMI2
HDMI-2_MHL
R818
0
ESD_HDMI2
VA809
ESD_HDMI2
VA808
VA811
ESD_HDMI2
VA810
HDMI-2_MHL
HDMI-2
R814
33
HDMI-2
R815100
R816100
HDMI-2
D805
1
2
3
4
5
ESD_HDMI2_TMDS
IP4294CZ10-TBR
D806
1
2
3
4
5
ESD_HDMI2_TMDS
IP4294CZ10-TBR
HDMI-2_MHL
C800
R817
0.047uF
300K
25V
MHL Spec
HDMI-2_MHL_Non
R817-*1
3.3K
10
9
8
7
6
10
9
8
7
6
HPD4
DDC_SDA_4
DDC_SCL_4
HDMI_CEC
CK-_HDMI4
CK+_HDMI4
D0-_HDMI4
D0+_HDMI4
D1-_HDMI4
D1+_HDMI4
D2-_HDMI4
D2+_HDMI4
MHL_CD_SENSE
CEC
HDMI_CEC
HDMI_DIODE_SUZHOU
D800-*1
MMBD6100
A1
C
5V_HDMI_2
R800
2.7K
+5V_Normal
R801
2.7K
R804
100
A2
HDMI_DIODE_KEC
A2CA1
KDS184
D800
DDC_SDA_2
DDC_SCL_2
CEC_REMOTE_S7
HDMI_DIODE_SUZHOU
D801-*1
MMBD6100
A1
C
R806
2.7K
+5V_Normal
R807
2.7K
5V_HDMI_4
HDMI_DIODE_SUZHOU
A2
HDMI_DIODE_KEC
A2CA1
KDS184
D801
D802-*1
MMBD6100
DDC_SDA_4
DDC_SCL_4
A2
A1
C
+3.5V_ST
A2CA1
HDMI_DIODE_KEC
KDS184
D802
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.
L15_M1A
HDMI_R1S18
140813
SPDIF
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
SPDIF_OUT
+3.3V_Normal
OPT
C1001
1uF
10V
ESD Ready
SPDIF_OPTIC
C1002
18pF
50V
GND
VCC
VINPUT
SPDIF_OPTIC
JK1001
JST1223-001
1
2
3
4
FIX_POLE
Fiber Optic
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.
L14_CA_M1A
SPDIF
2014/06/02
10
DDR_EXT
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.
L14_CA_M1A
DDR
2014/06/13
12
Serial Flash for SPI boot
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
/FLASH_WP
OPT
R1300
10K
+3.5V_ST
/SPI_CS
SPI_SDO
R1301
4.7K
OPT
WP#/SIO2
SPI_FLASH_MACRONIX
IC1300
MX25L8035EM2I-10G
CS#
1
SO/SIO1
2
3
GND
4
SPI_FLASH_WINBOND
IC1300-*1
W25Q80DVSSIG
CS
1
DO[IO1]
2
WP[IO2]
3
GND
4
8
7
6
5
8
7
6
5
VCC
NC/SIO3
SCLK
SI/SIO0
VCC
HOLD[IO3]
CLK
DI[IO0]
R1302
33
+3.5V_ST+3.5V_ST
C1300
0.1uF
16V
SPI_SCK
SPI_SDI
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.
L14_CA_M1A
S_FLASH
140721
13
LVDS
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
[51Pin LVDS Connector]
(For FHD 60Hz)
MO_FHD
P1800
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
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
PANEL_VCC
C1800
0.1uF
25V
VCOM_SDA
VCOM_SCL
RXA4+
RXA4-
RXA3+
RXA3-
RXACK+
RXACK-
RXA2+
RXA2-
RXA1+
RXA1-
RXA0+
MO_FHD_non_55CSOT
RXA0-
RXB4+
RXB4-
RXB3+
RXB3-
RXBCK+
RXBCK-
RXB2+
RXB2-
RXB1+
RXB1-
RXB0+
MO_FHD_non_55CSOT
RXB0-
MO_FHD_VCC_CAP
C1801
10uF
25V
LVDS_SEL
+3.3V_Normal
Cell_CSOT_55inch
R1806
1K
OPT
R1807
10K
R1801
0
0
R1812
Cell_INX_FHD
AR1800
0
1/16W
FOR FHD REVERSE(10bit)
Change in S7LR
MIRROR
RXA4+
RXA4-
RXA3+
RXA3-
RXACK+
RXACK-
RXA2+
RXA2-
RXA1+
RXA1-
RXA0+
RXA0-
RXB4+
RXB4-
RXB3+
RXB3-
RXBCK+
RXBCK-
RXB2+
RXB2-RXBCK-
RXB1+
RXB1-
RXB0+
RXB0-
Pol-change
RXA0+
RXA0-
RXA1+
RXA1-
RXA2+
RXA2-
RXACK+
RXACK-
RXA3+
RXA3-
RXA4+
RXA4-
RXB0+
RXB0-
RXB1+
RXB1-
RXB2+
RXB2-
RXBCK+
RXB3+
RXB3-
RXB4+
RXB4-
FOR FHD REVERSE(8bit)
Change in S7LR
RXA4+
RXA4-
RXA3+
RXA3-
RXACK+
RXACK-
RXA2+
RXA2-
RXA1+
RXA1-
RXA0+
RXA0-
RXB4+
RXB4-
RXB3+
RXB3-
RXBCK+
RXBCK-
RXB2+
RXB2-
RXB1+
RXB1-
RXB0+
RXB0-
MIRROR
Pol-change
RXA4+
RXA4-
RXA0+
RXA0-
RXA1+
RXA1-
RXA2+
RXA2-
RXACK+
RXACK-
RXA3+
RXA3-
RXB4+
RXB4-
RXB0+
RXB0-
RXB1+
RXB1-
RXB2+
RXB2-
RXBCK+
RXBCK-
RXB3+
RXB3-
RXA0-
RXA0+
RXA1-
RXA1+
RXA2-
RXA2+
RXACK-
RXACK+
RXA3-
RXA3+
RXA4-
RXA4+
RXB0-
RXB0+
RXB1-
RXB1+
RXB2-
RXB2+
RXBCK-
RXBCK+
RXB3-
RXB3+
RXB4-
RXB4+
Shift
RXA4-
RXA4+
RXA0-
RXA0+
RXA1-
RXA1+
RXA2-RXACK-
RXA2+
RXACK-
RXACK+
RXA3-
RXA3+
RXB4-
RXB4+
RXB0-
RXB0+
RXB1-
RXB1+
RXB2-
RXB2+
RXBCK-
RXBCK+
RXB3-
RXB3+
RXA0-
RXA0+
RXA1-
RXA1+
RXA2-
RXA2+
RXACK+
RXA3-
RXA3+
RXA4-
RXA4+
RXB0-
RXB0+
RXB1-
RXB1+
RXB2-
RXB2+
RXBCK-
RXBCK+
RXB3-
RXB3+
RXB4-
RXB4+
[30Pin LVDS Connector]
(For HD 60Hz_Normal)
MO_HD
P1801
10031HR-30
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
VCOM_SDA
VCOM_SCL
RXA3+
RXA3-
RXACK+
RXACK-
RXA2+
RXA2-
RXA1+
RXA1-
RXA0+
RXA0-
PANEL_VCC
LVDS_SEL
+3.3V_Normal
OPT
R1808
3.3K
OPT
R1809
10K
EU pin assign is different from NON EU.
Because of position of HD wafer.
V-COM I2C
URSA/VCOM_SCL
URSA/VCOM_SDA
VCOM_SCL
VCOM_SDA
+3.3V_Normal
VCOM_I2C_PULL_UP
R1810
VCOM_I2C
R1804
0
VCOM_I2C
R1805
0
VCOM_I2C_PULL_UP
2K
R1811
2K
URSA/VCOM_SCL
URSA/VCOM_SDA
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.
L14_CA_M1A
LVDS
140613
18
CI Region
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.
L14_CA_M1A
PCMCI_EU
2015/01/10
19
ETHERNET
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
* H/W option : ETHERNET
ETHERNET
JK2100
RJ45VT-01SN002
1
1
2
2
3
3
4
4
5
5
6
6
7
7
ETHERNET
8
8
9
9
C2105
0.01uF
50V
ETHERNET
C2104
0.01uF
50V
EPHY_TP
EPHY_TN
EPHY_RP
EPHY_RN
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.
L14_CA_M1A
LAN
2014/05/21
21
DVB-S2 LNB Part Allegro
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
(Option:LNB)
Caution!! need isolated GND
R2701
0
A_GND
Max 1.3A
LNB
+13.2V_LNB
LNB
D2701
LNB
R2702
2.2K
1W
A_GND
LNB
C2713
0.22uF
25V
LNB_OUT
LNB
C2714
18pF
50V
M13.2V
L2701
BLM18PG121SN1D
close to TUNER
LNB
C2701
18pF
LNB
C2702
33pF
50V
50V
Close to Tuner
Surge protectioin
LNB
D2702
Input trace widths should be sized to conduct at least 3A
Ouput trace widths should be sized to conduct at least 2A
3A
+13.2V_LNB
2A
LNB
D2703
30VSS23L
LNB
C2703
0.01uF
30VSS23L
LNB
C2704
10uF
50V
25V
close to Boost pin(#1)
LNB
LNB_SMAB34
C2712
0.1uF
50V
D2704
40V
C2705
10uF
A_GND
LNB
25V
LNB
C2706
10uF
25V
LNB_SX34
D2704-*1
40V
A_GND
LNB
C2707
0.1uF
50V
LNB_SX34
D2705-*1
40V
D2705
LNB_SMAB34
40V
BOOST
[EP]GND
20
VCP
1
THERMAL
LNB
2
NC_1
TDI
TDO
21
3
IC2701
4
A8303SESTR-T(4M)
5
6
IRQ
LPH6050T-150M-R
A_GND
GNDLX
NC_2
NC_3
18
19
LNB
7
8
SCL9ADD
SDA
LNB
L2702
15uH
3.5A
16LX17
15
14
13
12
11
10
TONECTRL
VIN
GND
VREG
ISET
TCAP
LNB
C2710
0.1uF
50V
LNB
C2708
10uF
25V
A_GND
close to VIN pin(#15)
LNB
C2709
0.1uF
50V
LNB
36K
1%
LNB
C2711
0.22uF
25V
R2703
1/16W
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.
LNB
R2704
33
LNB
R2705
33
DEMOD_SCL
DEMOD_SDA
R2706
0
LNB_TX
L14_CA_M1A
LNB27
2014/05/22
NET_COMMERCIAL
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
LC Filter for EXT SPK & HPScart(EU only)
HP_ROUT
HP_LOUT
15Y_HYNIX_2G
IC102-*10
H27U2G8F2DTR-BD
NC_1
1
NC_2
2
NC_3
3
NC_4
4
NC_5
5
NC_6
6
R/B
7
RE
8
CE
9
NC_7
10
NC_8
11
VCC_1
12
VSS_1
13
NC_9
14
NC_10
15
CLE
16
ALE
17
WE
18
WP
19
NC_11
20
NC_12
21
NC_13
22
NC_14
23
NC_15
24
L2900
5.6uH
C2900
4.7uF
10V
L2901
5.6uH
C2901
4.7uF
10V
Close to the Main IC
15Y_HYNIX_4G
IC102-*11
H27U4G8F2ETR-BC
VCC_1
VSS_1
NC_10
NC_11
NC_12
NC_13
NC_14
NC_15
NC_1
1
NC_2
2
NC_3
3
NC_4
4
NC_5
5
NC_6
6
R/B
7
RE
8
CE
9
NC_7
10
NC_8
11
12
13
NC_9
14
15
CLE
16
ALE
17
WE
18
WP
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
NC_29
48
NC_28
47
NC_27
46
NC_26
45
I/O7
44
I/O6
43
I/O5
42
I/O4
41
NC_25
40
NC_24
39
NC_23
38
VCC_2
37
VSS_2
36
NC_22
35
NC_21
34
NC_20
33
I/O3
32
I/O2
31
I/O1
30
I/O0
29
NC_19
28
NC_18
27
NC_17
26
NC_16
25
NC_29
NC_28
NC_27
NC_26
I/O7
I/O6
I/O5
I/O4
NC_25
NC_24
NC_23
VCC_2
VSS_2
NC_22
NC_21
NC_20
I/O3
I/O2
I/O1
I/O0
NC_19
NC_18
NC_17
NC_16
HP_EXT_SPK_ROUT
HP_EXT_SPK_LOUT
SCART_MUTE
SC1_ID_COMM
RGB DSUB(Non EU)
DSUB/SC1_HSYNC
DSUB/SC1_VSYNC
DSUB_DET
R2900 0
EU_SCART
R2906 0
EU_SCART
R2901 33
NON_EU_RGB
R2902 33
NON_EU_RGB
R2903 0
NON_EU_RGB
SCART1_MUTE
SC1_ID_COMM
COMP2_DET
SCART_MUTE
SC1_ID
DSUB/SC1_HSYNC
SC1_FB
DSUB/SC1_VSYNC
AV2_CVBS_DET
DSUB_DET
MODEL OPTION 9
+3.3V_Normal
READY
R2904
10K
READY
R2905
10K
AUD_SCK
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.
Commercial NET
NET_CONN29
USB_2
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
USB_2 for Wireless Dongle
+5V_USB
C3100
22uF
10V
OPT
WIFI_DM
* USB2_DM
WIFI_DP
* USB2_DP
USB2_HDD_CAP1_10UF
L3100
CB2012PK501T
USB2
USB2_HDD_CAP1_22UF
C3101
22uF
10V
R3103
USB2
2.2
R3104
USB2
2.2
C3101-*1
10uF
10V
USB2_HDD_CAP2_22UF
C3103
22uF
10V
OPT
D3100
RCLAMP0502BA
USB2_HDD_CAP2_10UF
C3103-*2
10uF
10V
ZD3100
SD05
5V
OPT
OPT
OPT
C3102
C3104
5pF
5pF
50V
50V
USB2
3AU04S-305- ZC- (LG)
JK3100
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.
RS232C
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
RS232C
C3200 0.33uF
C1+
C3201
0.1uF
C3202
0.1uF
SIGN2147483647
C3203
0.1uF
C3204
0.1uF
C1-
C2+
C2-
DOUT2
RIN2
V+
V-
IC3200
MAX3232CDR
1
2
3
4
5
6
7
8
EAN41348201
EXT_5V EXT_12V
IR_OUT
+3.5V_ST
D3200
CDS3C30GTH
30V
OPT
C3205
0.1uF
VCC
16
GND
15
DOUT1
14
RIN1
13
ROUT1
12
DIN1
11
DIN2
10
ROUT2
9
D3201
CDS3C30GTH
30V
OPT
+3.5V_ST
R3203
4.7K
EU_INT
EXT_5V EXT_12V
+3.5V_ST
R3204
4.7K
EU_INT
R3200
100
R3201
100
D3202
BAP70-02
50V
NON_NEC_MICOM
R32050
NON_NEC_MICOM
R32060
NEC_MICOM
R32070
NEC_MICOM
R32080
R3202
1K
PM_RXD
PM_TXD
UART_RX
UART_TX
10
9
8
7
6
SPG09-DB-009
P3200
5
4
3
2
1
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.
External Speaker
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
EXT SPK AMP
EXT_SPK
L3400
A13.2V
EXT_SPK
C3405
0.1uF
50V
Close to Pin3
EXT_AMP_14Y
IC3400
TPA3124D2PWPR
EXT_SPK_DET
HP_DET
HEAD_PHONE
R3400
47K
+3.5V_ST
B
EXT_SPK
R3402
47K
C
Q3400
MMBT3904(NXP)
P
HEAD_PHONE
E
UBW2012-121F
EXT_SPK
C3408
0.1uF
50V
Close to Pin1
EXT_SPK
C3410
10uF
35V
PVCCL_1
SD
PVCCL_2
MUTE
LIN
RIN
BYPASS
AGND_1
AGND_2
PVCCR_1
VCLAMP
PVCCR_2
EXT_AMP_15Y_CI
IC3400-*1
PAM8124
1
2
3
4
5
6
7
8
9
10
11
12
PGNDL_2
24
PGNDL_1
23
LOUT
22
BSL
21
AVCC_2
20
AVCC_1
19
GAIN0
18
GAIN1
17
BSR
16
ROUT
15
PGNDR_2
14
PGNDR_1
13
SIDE_HP_MUTE
HP_EXT_SPK_LOUT
HP_EXT_SPK_ROUT
AMP_RESET
R3401
1K
EXT_SPK
R3403
10K
EXT_SPK
EXT_SPK
C3401
1uF
10V
C3402
1uF
10V
Close to AMP IC
C3400
1uF
50V
EXT_SPK
C3403
1uF
50V
EXT_SPK
C3404
0.1uF
50V
EXT_SPK
PVCCL_1
PVCCL_2
PVCCR_1
PVCCR_2
MUTE
LIN
RIN
BYPASS
AGND_1
AGND_2
VCLAMP
1
SD
2
3
4
5
6
7
8
9
10
11
12
Close to Pin10
24
23
22
21
20
19
18
17
16
15
14
13
PGNDL_2
PGNDL_1
LOUT
BSL
AVCC_2
AVCC_1
GAIN0
GAIN1
BSR
ROUT
PGNDR_2
PGNDR_1
C3407
0.22uF
50V
EXT_SPK
C3406
0.22uF
50V
EXT_SPK
Close to AMP IC
EXT_SPK
22.0uH
L3402
EXT_SPK
C3409
0.1uF
50V
EXT_SPK
Close to Pin19,20
L3401
22.0uH
R3404
10K
OPT
R3413
10K
EXT_SPK
R3406
10K
EXT_SPK
R3407
10K
OPT
R3408
4.7K
EXT_SPK
R3409
4.7K
EXT_SPK
GAIN1
0
0
1
EXT_SPK
C3411
0.47uF
50V
EXT_SPK
C3412
0.47uF
50V
GAIN0
1
0
1
OPT
C3413
0.47uF
50V
OPT
C3414
0.47uF
50V
AMP GAIN
20dB0
26dB
32dB
36dB1
C3415
47uF
25V
EXT_SPK
C3416
47uF
25V
EXT_SPK
EXT_SPK
10K
R3410
EXT_OUT_L
EXT_OUT_R
EXT_SPK
10K
R3411
EXT SPK Jack
EXT_SPK
JK3400
PEJ034-01
3
E_SPRING
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.
R_SPRING
4
T_SPRING
5
B_TERMINAL2
7B
T_TERMINAL2
6B
OPT
VA3400
5.6V
EXT_OUT_R
EXT_OUT_L
EXT_SPK_DET
IR + LED + Digital Eye + Control Key
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
(With IR OUT)
IR OUT TO RS232C
+3.5V_ST
IR_OUT_EU
R3501
1K
IR_OUT
IR_OUT_EU
Q3500
2SC3052
IR_OUT_US
C
E
R3505
0
B
IR_OUT_EU
R3502
10K
IR_OUT
2SC3052
IR_OUT
R3503
Q3501
+3.5V_ST
1K
C
E
B
IR_OUT_EU
R3504
33K
IR_OUT_US
R3504-*1
10K
+3.5V_ST
R4603
R4604
10K
10K
1%
R4601
KEY1
KEY2
BLM18PG121SN1D
C4600
0.1uF
LED_R/BUZZ
R4610
IR
22
IR_Eye_Sensor
SENSOR_SCL
SENSOR_SDA
+3.5V_ST
L4600
+3.5V_ST
R4600
3.3K
+3.3V_Normal
R4605
1K
1000pF
100
R4602
100
C4601
50V
C4604
100pF
IR_Eye_Sensor
R4607
IR_Eye_Sensor
1K
R4608
IR_Eye_Sensor
R4609
C4602
0.1uF
16V
For EMI
R4606
1.8K
50V
100
IR_Eye_Sensor
100
IR_Eye_Sensor
1%
SIGN5600026922222
C4603
0.1uF
16V
SIGN5600026822222
OPT
VA4600
5.6V
VA4601
20V
C4605
18pF
50V
C4606
18pF
50V
SIGN56000271222222
IR_10p
P4600
12507WR-10L
1
2
3
4
5
6
7
8
9
10
11
IR_8p
P4601
12507WR-08L
1
2
3
4
5
6
7
8
9
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.
L15_COMM
IE EYE SENSOR / IR OUT
2014.07.11
35
RGB/SCART Switch
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
RGB PC
DSUB_VSYNC
DSUB_HSYNC
DSUB_B+
R3600
2.4K
R3601
10K
OPT
C3600
47pF
50V
OPT
C3603
68pF
50V
RGB_PC
R3602
75
NON_CI_CAP_RGB_PC
OPT
VA3600
20V
ADUC 20S 02 010L
ADUC 20S 02 010L
RGB_VARISTOR
VA3601
20V
OPT
C3604
68pF
50V
NON_CI_CAP_RGB_PC
C3605
18pF
50V
OPT
VA3604
20V
ADUC 20S 02 010L
NON_EMI_RGB
EMI_RGB
BLM15BD121SN1
RGB_PC
R3605
2.2K
C3606
18pF
50V
L3601-*1
0
L3601
RGB_PC
MMBD6100
C
RGB_PC
R3606
2.2K
D3600
OPT
VA3605
5.6V
DSUB/SCART Switch
IC3600
BA7657F
+5V_Normal
A2
A1
NON_CI_CAP_RGB_PC
C3607
0.1uF
16V
RGB_DDC_SCL
RGB_DDC_SDA
OPT
VA3606
5.6V
SC1_R+/COMP1_Pr+_1
SC1_G+/COMP1_Y+_1
SC1_B+/COMP1_Pb+_1
* SC1_R+
* SC1_G+
* SC1_B+
DSUB_R+
DSUB_G+
DSUB_B+
C3608
6.3V
22uF
C3609
0.01uF
25V
C3610
6.3V
22uF
C3611
0.01uF
25V
C3612
6.3V
22uF
C3613
0.01uF
25V
C3614
6.3V
22uF
C3615
0.01uF
25V
C3616
0.01uF
25V
C3617
6.3V
22uF
C3618
0.01uF
25V
C3619
6.3V
22uF
C3620
470pF
HD_SYNC_SIGNAL_DETECTOR
50V
R3609 470K
SC1_FB_1
RED_1_INPUT
GREEN_1_INUT
GROUND1
BLUE_1_INPUT
GROUND2
RED_2_INPUT
GROUND3
GREEN_2_INPUT
GROUND4
BLUE_2_INPUT
VD_1_INPUT
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
+5V_Normal
HD_1_INPUT
HD_2_INPUT
HD_OUTPUT
RED_OUTPUT
VCC
GREEN_OUTPUT
COMPOSITE_VIDEO_INPUT
COMPOSITE_SYNC_OUTPUT
CONTROL
BLUE_OUTPUT
VD_OUTPUT
VD_2_INPUT
R3611
22
R361801/16W
R3613
75
R3612
68K
R3614
75
R3616
10K
C3621
0.1uF
* neets box issue
5%
C3622
0.01uF
25V
SCART RGB CAP
R3615
2K
C3623
0.01uF
25V
SCART RGB CAP
+3.5V_ST
OPT
C3625
C3624
22uF
22uF
10V
10V
R3617
75
SCART RGB CAP
OPT
C3626
0.01uF
25V
DSUB/SC1_OUT_CTRL
SCARTLow
RGB
DSUB_HSYNC
DSUB/SC1_HSYNC
SC1_R+/COMP1_Pr+
* DSUB/SC1_R+
SC1_G+/COMP1_Y+
* DSUB/SC1_G+
SC1_B+/COMP1_Pb+
* DSUB/SC1_B+
DSUB/SC1_VSYNC
DSUB_VSYNC
High
Noise Improvement
C3622-*1
0
1/16W
5%
SCART RGB 0ohm
C3626-*1
0
1/16W
5%
SCART RGB 0ohm
SCART RGB 0ohm
C3623-*1
0
1/16W
5%
DSUB_G+
DSUB_R+
OPT
C3602
47pF
50V
C3601
47pF
50V
OPT
RGB_PC
R3603
75
RGB_PC
R3604
75
ADUC 20S 02 010L
RGB_VARISTOR
VA3602
20V
ADUC 20S 02 010L
RGB_VARISTOR
VA3603
20V
NON_EMI_RGB
EMI_RGB
NON_EMI_RGB
EMI_RGB
BLM15BD121SN1
L3602-*1
0
L3602
BLM15BD121SN1
L3600-*1
0
L3600
RED2GREEN3BLUE4GND_15DDC_GND
RED_GND7GREEN_GND8BLUE_GND9NC10SYNC_GND
GND_212DDC_DATA13H_SYNC14V_SYNC15DDC_CLOCK
11
6
1
P3600
SPG09-DB-010
RGB_PC
SHILED
16
+3.3V_Normal
RGB_PC
R3607
10K
OPT
VA3607
5.6V
ADMC 5M 02 200L
RGB_PC
R3608
1K
DSUB_DET
PWM3
* DSUB/SC1_OUT_CTRL
R3610
4.7K
Q3600
MMBT3904(NXP)
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.
L14 TUNER_EU T/C_T2/C/S2_CHINA
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.
ERROR & VALID PIN
FE_TS_VAL
FE_TS_ERR
L14_CA_M1A
T2_OR_CHINA
R3736
0
FE_TS_VAL_ERR
GPIO must be added.
2014/05/22
TUNER_T2CS237
RTC BLOCK
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
+3.5V_ST
RTC
C3800
3.3pF
C3801
3.3pF
RTC
M3800
BATTERY
RTC
RTC
X3800
32.768KHz
R3800
1K
1
2
RTC
OSCI
OSCO
VBAT
VSS
RTC
IC3800
PCF8523T
1
2
3
4
VDD
8
INT1/CLKOUT
7
SCL
6
SDA
5
C3802
0.1uF
C3804
8pF
OPT
RTC
OPT
C3803
10uF
10V
C3805
8pF
OPT
R3805
RTC_NEC_MICOM
22
R3806
RTC_NEC_MICOM
22
R3803
RTC_NON_NEC_MICOM
22
R3804
22
RTC_NON_NEC_MICOM
CLOCK_SCL
CLOCK_SDA
I2C_SCL
I2C_SDA
CLOCK_SCL
CLOCK_SDA
I2C_SCL
I2C_SDA
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.
L15 Commercial
RTC
38
TP for EU
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.
L14_CA_M1A
TP_EU41
2014/05/22
SCART_COMPONENT
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
REAR COMPONENT PHONE JACK(EAX65149705)
COMPONENT
JK4301
PEJ029-02
G_SPRING
8
E_SPRING
3
R_SPRING
4
T_SPRING
5
B_TERMINAL
7
T_TERMINAL
6
ZD4300-*1
ESD_COMP_ZENER_KEC
ZD4301-*1
ESD_COMP_ZENER_KEC
ESD_COMP_ZENER_ROHM
ESD_COMP_ZENER_ROHM
ZD4301
VA4309
5.6V
OPT
VA4310
5.5V
ESD_COMP
VA4311
5.5V
ESD_COMP
ZD4300
R43 06
75
R43 07
75
R4308
75
+3.3V_Normal
R4300
10K
OPT
C4300
0.1uF
16V
R4310
1K
COMP2_Pr+
COMP2_Pb+
COMP2_Y+/AV_CVBS_IN
* COMP2_Y+
AV_CVBS_DET
* Rear_COMP_DET
SCART AMP
DTV/MNT_L_OUT
SCART1_Lout
EU
R4323
2.2K
EU
C4306
OPT
10uF
R4324
16V
470K
330pF
C4307
EU
CLOSE TO MSTAR
220K
R4326
EU
R4327
33K
C4308
33pF
EU
EU
R4328
5.6K
M13.2V
EU
C4309
VCC
OUT2
IN2-
IN2+
0.1uF
50V
EU
R4330
EU
R4337
R4334
470K
C4311
330pF
2.2K
EU
OPT
EU
C4313
10uF
16V
SCART1_Rout
EU
R4332
33K
10K
EU
C4310
33pF
EU
R4331
5.6K
EU
R4333
220K
DTV/MNT_R_OUT
IC4300
AZ4580MTR-E1
OUT1
1
IN1-
2
EU
R4329
10K
EU
IN1+
3
VEE
4
8
EU
7
6
5
CLOSE TO MSTAR
FULL SCART
EU
JK4300
PSC008-03
22
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
AV_DET
COM_GND
SYNC_IN
SYNC_OUT
SYNC_GND2
SYNC_GND1
RGB_IO
R_OUT
RGB_GND
R_GND
D2B_OUT
G_OUT
D2B_IN
G_GND
ID
B_OUT
AUDIO_L_IN
B_GND
AUDIO_GND
AUDIO_L_OUT
AUDIO_R_IN
AUDIO_R_OUT
VA4302
5.5V
ESD_SCART
VA4303
20V
ESD_SCART
ESD_SCART
VA4305
20V
VA4306
20V
ESD_SCART
VA4307
20V
ESD_SCART
VA4308
5.6V
ESD_SCART
VA4304
5.6V
ESD_SCART
VA4301
5.6V
OPT
VA4300
5.6V
OPT
VA4313
5.6V
OPT
VA4312
R4303
75
R4304
75
R4301
75
R4302
470K
R4305
470K
EU
C4301
1000pF
50V
EU
C4302
1000pF
50V
5.6V
R4309
75
C4315
0.1uF
25V
TR_NXP
Q4303
MMBT3904(NXP)
SCART_MUTE
C4314
0.1uF
R4341
470K
R4342
470K
FET_AOS
Q4304-*1
AO3435
S
G
FET_TOSHIBA
SSM3J332R
R4343
10K
R4344
10K
D
Q4304
S
G
TR_KEC
Q4303-*1
2N3904S
SCART_MUTE
R4347
10K
R4345
12K
R4346
12K
D
C4316
10uF
25V
OPT
B
+3.5V_ST
C
E
B
B
COMP2_R_IN
COMP2_L_IN
C
SCART_MUTE_KEC
Q4301-*1
2N3904S
E
SCART_MUTE
C
SCART_MUTE_KEC
Q4302-*1
2N3904S
E
+3.3V_Normal
R4311
10K
R4312 1K
EU
C4303
47pF
50V
OPT
SIGN56000286
EU
SC1/COMP1_DET
SC1/AV2_CVBS_IN
* SC1/AV_CVBS_IN
EU
R4313
75
R4314
10
EU
EU
C4304
68pF
50V
SC1_R+/COMP1_Pr+_1
* SC1_R+
SC1_G+/COMP1_Y+_1
* SC1_Y+
SC1_B+/COMP1_Pb+_1
* SC1_B+
EU
C4305
68pF
50V
R4315
75
EU
EU
R4316
15K
VA4314
20V
ESD_SCART
R4318
10K
EU
R4317
10K
DTV/MNT_VOUT
EU
R4319
22
EU
R4320
3.9K
EU
EU
EU
R4321
12K
R4322
12K
EU_SC_Lite
R4348
0
R4349
0
EU_SC_Int
+3.3V_Normal
EU_SC_Lite
R4325
10K
SC1_ID_COMM
* SC1_ID
SC1/COMP1_L_IN
SC1/COMP1_R_IN
DTV/MNT_L_OUT
DTV/MNT_R_OUT
EU_SC_Lite
Q4300
MMBT3904(NXP)
SC1_FB
SC1_FB_Int
SC1_FB_1
SC1_FB_Int
+3.3V_Normal
[SCART AUDIO MUTE]
DTV/MNT_L_OUT
SCART_MUTE_NXP
Q4301
MMBT3904(NXP)
DTV/MNT_R_OUT
SCART_MUTE_NXP
Q4302
MMBT3904(NXP)
PC/COMPONENT AUDIO
JK4302
PEJ027-04
6A
7A
7B
6B
+13.2VM13.2V
L4300
UBW2012-121F
120OHM
SIGN56000276
VA4315
VA4316
R4339
33K
R4340
12K
B
5.6V
OPT
5.6V
OPT
SIGN56000274
C
E
E_SPRING
3
T_TERMINAL1
B_TERMINAL1
R_SPRING
4
T_SPRING
5
B_TERMINAL2
T_TERMINAL2
C4312
0.1uF
25V
SCART_MUTE
R4335
2K
SCART_MUTE
R4336
2K
SIGN56000273
R4338
10K
M13.2V FET
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.
@Entit
SCART_COMPONENT_EU
14/06/23
@pageL
NAND FLASH MEMORY
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LG-NonOS SB51_ExtSPI 3’b000 51boot from SPI
LG-OS HEMCU_ExtSPI 3’b001 MIPS boot from SPI
+3.5V_ST
22
PCM_A[0-7]
PCM_A[7]
PCM_A[6]
PCM_A[5]
PCM_A[4]
PCM_A[3]
PCM_A[2]
PCM_A[1]
PCM_A[0]
NAND_FLASH_1G_TOSHIBA_24n
TC58NVG0S3HTA00
NC_1
1
NC_2
2
NC_3
3
NC_4
4
NC_5
5
NC_6
6
RY/BY
7
RE
8
CE
9
NC_7
10
NC_8
11
VCC_1
12
VSS_1
13
NC_9
14
NC_10
15
CLE
16
ALE
17
WE
18
WP
19
NC_11
20
NC_12
21
NC_13
22
NC_14
23
NC_15
24
EAN61508002
IC102-*2
OPT
R115
4.7K
R116
4.7K
EEPROM
BR24G256FJ-3
EAN62389502
A0
A1
A2
GND
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
OPT
R117
R165
4.7K
2.7K
R118
R121
4.7K
2.7K
NVRAM_RHOM
IC104
1
2
A0’h
3
4
NC_29
NC_28
NC_27
NC_26
I/O8
I/O7
I/O6
I/O5
NC_25
NC_24
NC_23
VCC_2
VSS_2
NC_22
NC_21
NC_20
I/O4
I/O3
I/O2
I/O1
NC_19
NC_18
NC_17
NC_16
LED_R/BUZZ
PM_LED
OPT
SPI_SDI
+3.3V_Normal
VCC
8
C105
0.1uF
WP
7
SCL
6
SDA
5
OPT
C104
8pF
OPT
C106
8pF
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.
L14_CA_M1A
MAIN1_EU1
2014/05/20
MODEL OPTION
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.
L14_CA_M1A
MAIN2_EU
2014/11/18
2
AUDIO AMP(TI)
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.
SPK_L+
SPK_L-
SPK_R+
SPK_R-
L14_CA_AMP
1AMP_TAS
250A1-WR-H04M
WAFER-ANGLE
4
3
2
1
P5600
Box Type SPK Wafer
56
140818
MHL SW AND GATE
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
MHL_CD_SENSE
MHL_OCP_EN
MHL_AND_GATE_TOSHIBA
IC5801
TC7SZ08FU_TOSHIBA
IN_B
1
IN_A
2
GND
3
MHL_AND_GATE_NXP
IC5801-*1
74LVC1G08GW
15
2
3
+3.3V_Normal
VCC
5
OUT_Y
4
4
OPT
R5801
MHL OCP
AVDD5V_MHL
MHL_5V_EN
10K
/MHL_OCP_DET
R5802
10
5V_HDMI_4
MHL_OCP
C5801
10uF
10V
+3.3V_Normal
MHL_OCP
R5803
0
MHL_SUZHOU
D5801
40V
SS2040LL-LG
OPT
R5805
100K
MHL_OCP
R5804
10K
MHL_ONSEMI
D5801-*1
MBR230LSFT1G
30V
OUT_3
OUT_2
OUT_1
OC
MHL_OCP
IC5802
BD82020FVJ
8
7
6
5
+5V_Normal
GND
1
IN_1
2
IN_2
3
EN
4
MHL_OCP
R5806
MHL_OCP
C5802
0.1uF
MHL_5V_EN
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.
MHL_SW_AND
140815L14_CA_M1A
58
Headphone
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
*Option : HEAD_PHONE_NEW
HEAD_PHONE
C3000
10uF
HP_EXT_SPK_ROUT
HP_EXT_SPK_LOUT
16V
HEAD_PHONE
C3001
10uF
16V
OPT
C3002
1000pF
50V
OPT
C3003
1000pF
50V
HEAD_PHONE
R3002
1K
HEAD_PHONE
R3003
1K
HP_DET
+3.3V_Normal
HEAD_PHONE
R3005
10K
HEAD_PHONE
R3004
1K
JK3000
PJ-3596T
HEAD_PHONE
33
22
44
11
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.
L15_COMM
HP_NEW_COMM
20140710
184
AV2_L_IN
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
AV2_R_IN
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.
L14_CA_M1A
USB_S1
2014/05/20
7
Contents of Standard Repair Process
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Vertical/Horizontal bar, residual image, light
spot, external device color error
6
No power 7
Off when on, off while viewing, power auto
on/off
8
No audio/Normal video 9
C. Audio error
9 Wrecked audio/discontinuation/noise 10
10
Remote control & Local switch checking 11
D. Function error
11 External device recognition error 12
12 E. Noise Circuit noise, mechanical noise 13
13 F. Exterior error Exterior defect 14
* First of all, Check whether there is SVC Bulletin in GCSC System for these model.
Contents of Standard Repair Process Detail Technical Manual
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
No. Error symptom Content Page Remarks
1
Check LCD back light with naked eye A1
2 LED driver B+ 24V measuring method A2
A. Video error_ No video/Normal audio
3 Check White Balance value A3
4 Power Board voltage measuring method A4
6
TUNER input signal strength checking method A5
A. Video error_ No video/Video lag/stop
7 Version checking method A6
9
connection diagram A7
10
11
A. Video error_Color error
Check Link Cable (LVDS) reconnection
condition
A8
A9
12 Adjustment Test pattern - ADJ Key A10
13
14
A. Video error_Vertical/Horizontal bar,
residual image, light spot
connection diagram A8
Check Link Cable (LVDS) reconnection
condition
A8
A9
15 Adjustment Test pattern - ADJ Key A10
16
17 Exchange T-Con Board (2) A-2/5
<Appendix>
18 Exchange LED driver Board (PSU) A-3/5
Defected Type caused by T-Con/
Inverter/ Module
19 Exchange Module itself (1) A-4/5
20 Exchange Module itself (2) A-5/5
Exchange T-Con Board (1) A-1/5
55” : driver board
Other : PSU
Standard Repair Process
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Error
symptom
A. Video error
No video/ Normal audio
Established
date
Revised date
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
N
Move to
No video/No
audio
Y
Check Back Light
On with naked eye
On
☞A2
Check Power Board 24V output
Normal
Voltage
N
N
Y
Check Power
Board
3.5V, 12V, 24V etc.
Y
Replace Inverter
or module
Normal
Voltage
N
Repair Power
Board or parts
End
Y
Replace T-con
Board or module
1/14
※Precaution
Always check & record S/W Version and White
Balance value before replacing the Main Board
☞A6 & A3
Repair Power
Board or parts
Replace Main Board Re-enter White Balance value
Standard Repair Process
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
No Video/
No audio
Error
symptom
☞A4
Check various
voltages of Power
Board ( 3.5V,12V, 24V)
A. Video error
No video/ No audio
Normal
Voltage
N
Replace Power
Board and repair
parts
Y
Check and
replace
MAIN B/D
Established
date
Revised date
End
2/14
Standard Repair Process
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
☞ A5
Check RF Signal level
Normal
Y
Signal
N
Check RF Cable
Connection
1. Reconnection
2. Install Booster
Error
A. Video error
symptom
Picture broken/ Freezing
. By using Digital signal level meter
. By 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`
☞ A6
N
Y
Check
S/W Version
Normal
Picture
SVC
Bulletin
Y
Established
date
Revised date
N
Check
Tuner soldering
Normal
Picture
N
Y
3/14
End
Normal
Picture
End
Y
N
Contact with signal distributor
or broadcaster (Cable or Air)
S/W Upgrade
Normal
Picture
Y
End
Replace
Main B/D
N
Standard Repair Process
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
☞ A5
Check RF Signal level
Normal
Signal
Contact with signal
distributor
or broadcaster
(Cable or Air)
Y
N
Error
symptom
Check RF signal cable (DVB satellite signal or not)
Check whether other equipments have problem or not.
(By connecting RF Cable at other equipment)
→ Set-Top-Box, Different maker TV etc
Change satellite setting
(match with installed ANT)
Normal
Setting
N
Y
☞ A6
Check
S/W Version
Established
date
Revised date
SVC
Bulletin
Y
S/W Upgrade
N
Check
Tuner soldering
4/14
Replace
Main B/D
End
Normal
Picture
Y
End
N
Normal
Picture
Y
End
N
Standard Repair Process
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Error
symptom
☞A7
Check color by input
-External Input
-COMPONENT
-RGB
-HDMI/DVI
☞A10
Check Test pattern
Color
error
N
Check error
color input
mode
Y
External
Input/Co
mponent
A. Video error
Color error
☞ A8/ A9
※ 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/
Y
Cable
Normal
N
Color
error
End
5/14
Y
Replace module
N
Replace Main B/D
HDMI
error
Check external
device and
cable
Request repair
for external
device/cable
N
External
device/
Cable
Normal
Y
Replace Main B/D
Standard Repair Process
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Error
symptom
Vertical / Horizontal bar, residual image,
light spot, external device color error
A. Video error
Vertical/Horizontal bar, residual image, light spot
☞A7
Check color condition by input
-External Input
-Component/AV
-HDMI
☞A10
Check Test pattern
External device screen error-Color error
Check S/W Version
S/W Upgrade
Replace
module
Check
Version
Screen
normal
N
N
Y
Check external
Y
device
connection
condition
Check screen
condition by input
-External Input
-Component
-RGB
-HDMI/DVI
Screen
normal
Request repair
Y
N
for external
device
External
☞ A8/ A9
Check and
replace Link
Cable
Input
error
Compo
nent
error
Established
date
Revised date
Screen
normal
N
Replace Main B/D
Y
End
Connect other external
device and cable
(Check normal operation of
External Input, Component
and HDMI by connecting
Jig, pattern Generator,
Set-top Box etc.
Screen
normal
Request repair for
external device
6/14
Replace
Module
N
Screen
normal
Y
End
N Y Replace
Main B/D
Normal
Screen
Y
End
N
HDMI
error
Connect other external
device and cable
(Check normal operation
of External Input,
Component, HDMI by
connecting Jig, pattern
Generator ,Set-top Box
etc.
Y
Screen
normal
N
Replace
Main B/D
Standard Repair Process
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
☞A11
Check
Power LED
Stand-By : Red
Error
symptom
Power
Y
LED On
N
Check Power cord
was inserted properly
N
Normal
※
Y
B. Power error
☞A12
Check ST-BY 3.5V
No power
DC Power on
by pressing Power Key
On Remote control
☞A4
Measure voltage of each output of Power B/D
Y
Normal
Voltage
Established
date
Revised date
Normal
Operati
on
Y
Normal
Voltage
N
Y
☞A13
Check Power
On ‘”High”
Replace Main B/D
OK
Y
Replace Main B/D
7/14
Replace
Power
B/D
End
N
Replace Power B/D
N
Replace Power B/D
Standard Repair Process
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Check outlet
Check A/C cord
Check for all 3- phase
power out
* Please refer to the all cases which
can be displayed on power off mode.
Error
symptom
Fix A/C cord & Outlet
and check each 3
phase out
B. Power error
Off when on, off while viewing, power auto on/off
☞A14
Error
N
Y
Check Power Off
Mode
☞A13
(If Power Off mode
is not displayed)
Check Power B/D
voltage
※ Caution
Check and fix exterior
Replace Power B/D
of Power B/D Part
Status Power off List Explanation
"POWEROFF_REMOTEKEY" Power off by REMOTE CONTROL
"POWEROFF_OFFTIMER"
"POWEROFF_SLEEPTIMER" Power off by SLEEP TIMER
"POWEROFF_INSTOP" Power off by INSTOP KEY
"POWEROFF_AUTOOFF" Power off by AUTO OFF
Normal
"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
CPU
Abnorm
al
Abnorm
al1
Normal
Voltage
N
Established
date
Revised date
Replace Main B/D
Y
Replace Main B/D
Power off by OFF TIMER
Normal
Y
N
Replace Power B/D
8/14
End
Standard Repair Process
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
No audio
Screen normal
Error
symptom
C. Audio error
No audio/ Normal video
☞A15 ☞A16
Check user
menu
Speaker off
Off
Y
Cancel OFF
Check
Speaker
disconnection
N
Check audio B+
24V of Power
Board
Disconn
ection
Established
date
Revised date
Normal
Y
Voltage
N
Replace Power Board and repair parts
N
Replace MAIN Board
9/14
End
Y
Replace Speaker
Standard Repair Process
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Check input
signal
-RF
-External Input
signal
Error
symptom
C. Audio error
Wrecked audio/ discontinuation/noise
Established
date
Revised date
→ abnormal audio/discontinuation/noise is same after “Check input signal” compared to No audio
☞A16
Signal
Normal
N
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/
Discontinuation/
Noise for all audio
Wrecked Audio/
Discontinuation/
Noise only for D-TV
Wrecked Audio/
Discontinuation/
Noise only for Analog
Wrecked Audio/
Discontinuation/
Noise only for
External Input
Check and replace
speaker and
connector
Replace Main B/D
Connect and check
other external
device
Check and fix external device
Check audio
B+ Voltage (24V)
Normal
Y
Voltage
N
Replace Power B/D
Replace Main B/D
Normal
N
Audio
Y
10/14
End
Standard Repair Process
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Error
symptom
Remote control & Local switch checking
1. Remote control(R/C) operating error
☞A17
Check R/C itself
Operation
Check R/C Operating
When turn off light
in room
If R/C operate,
Explain the customer
cause is interference
from light in room.
Normal
Operating
Y
N
Check & Replace
Baterry of R/C
Normal
Operating
Check & Repair
Cable connection
Connector solder
Y
End
N
D. Function error
Normal
Operating
End
N
Y
☞A17
Check B+ 3.5V
On Main B/D
☞A4
Check 3.5v on Power B/D
Replace Power B/D or
Replace Main B/D
(Power B/D don’t have problem)
Established
date
Revised date
Normal
Voltage
N
☞A17
Y
Check IR
Output signal
11/14
Replace
Main B/D
Y
Normal
Signal
N
Repair/Replace
IR B/D
Replace R/C
Standard Repair Process
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Check
input
signal
Error
symptom
Signal
Input
N
Check and fix
external device/cable
Y
D. Function error
External device recognition error
Check technical
information
- Fix information
- S/W Version
Technical
information
Fix in
accordance
with technical
information
Y
N
Established
date
Revised date
External Input and
Component
Recognition error
HDMI, Optical
Recognition error
12/14
Replace Main B/D
Replace Main B/D
Standard Repair Process
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Identify
nose type
Error
symptom
Mechanical
noise
E. Noise
Circuit noise, mechanical noise
Circuit
noise
※ 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 nose” in the Owner’s Manual.
Check location
of noise
Check location of
noise
OR
OR
Established
date
Revised date
Replace PSU(with LED driver)
Replace LED driver
※ When the nose is severe, replace the module
(For models with fix information, upgrade the S/W or
provide the description)
※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)
13/14
Standard Repair Process
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Error
symptom
Zoom part with
exterior damage
F. Exterior defect
Exterior defect
Module
damage
Cabinet
damage
Remote
Controller
damage
Replace module
Replace cabinet
Replace remote controller
Established
date
Revised date
14/14
Stand
damage
Replace stand
Contents of Standard Repair Process Detail Technical Manual
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Continued from previous page
No. Error symptom Content Page Remarks
21
22 Check power input Voltage & ST-BY 3.5V A12
23 Checking method when power is ON A13
24 POWER BOARD voltage measuring method A4
25
26
28
29
30
31
B. Power error_No power
B. Power error_Off when on, off while
viewing
C. Audio error_No audio/Normal video
C. Audio error_Wrecked
audio/discontinuation
D. Function error_ No response in
remote controller, key error
Check front display LED A11
POWER OFF MODE checking method A14
Checking method in menu when there is no
audio
Voltage and speaker checking method when
there is no audio
Voltage and speaker checking method in
case of audio error
Remote controller operation checking method A17
A15
A16
A16
Standard Repair Process Detail Technical Manual
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Error
symptom
Content
<ALL MODELS>
A. Video error_No video/Normal audio
Check Back Light On with naked eye
Established
date
Revised
date
A1
Power On -> disjoint back case -> check lighting at 2 points.
Standard Repair Process Detail Technical Manual
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Error
symptom
Content
A. Video error_No video/Normal audio
Inverter B+ 24V measuring method
Established
date
Revised
date
A2
1. Measure DC 24V applying to inverter PCB from Power Board.
2. Output 24V from Power Board -> supply to inverter PCB.
Check Pin contacting statement and connection statement.
Standard Repair Process Detail Technical Manual
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Error
symptom
Content
<ALL MODELS>
A. Video error_No video/Normal audio
Check White Balance value
Established
date
Revised
date
A3
Entrymethod
Entry method
1. Press theADJ buttonontheremotecontroller for adjustment.
1. Press the ADJ button on the remote controller for adjustment.
2. Enter intoWhiteBalanceofitem6.
2. Enter into White Balance of item 7.
3. After recordingtheR, G, B (GAIN, Cut) valueofColor Temp(Cool/Medium/Warm), re-
3. After recording the R, G, B (GAIN, Cut) value of Color Temp (Cool/Medium/Warm), reenter thevalueafter replacingtheMAIN BOARD.
enter the value after replacing the MAIN BOARD.
Standard Repair Process Detail Technical Manual
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Error
symptom
Content
A. Video error_No video/ Audio
Power Board voltage measuring method
Established
date
Revised
date
Check DC 3.5V, 12V, 24V
18 Pin (Power Board ↔ Main Board)
SMAW200-H18S5
A4
1
3
5
7
9
11
13 12V 14
15 12V 16
17 GND 18
Power on
3.5V
3.5V
GND
24V
GND
2
4
6
8
10
12
DRV ON
PDIM#1
3.5V
PDIM#2
24V
GND
12V
NC
GND
Standard Repair Process Detail Technical Manual
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Error
symptom
Content
A. Video error_Video error, video lag/stop
TUNER input signal strength checking method
MENU => Press red key Remote controller=>signal test
=> Select channel
Established
date
Revised
date
A5
When the signal is strong, use the
attenuator (-10dB, -15dB, -20dB etc.)
Standard Repair Process Detail Technical Manual
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Error
symptom
Content
Version
A. Video error_Video error, video lag/stop
Version checking method
1. Checking method for remote controller for adjustment
Established
date
Revised
date
A6
Press the IN-START with the remote
controller for adjustment
Standard Repair Process Detail Technical Manual
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Error
symptom
Content
<ALL MODELS>
A. Video error _Vertical/Horizontal bar, residual
image, light spot
connection diagram (1)
Established
date
Revised
date
A7
As the part connecting to the external input, check the
screen condition by signal
Standard Repair Process Detail Technical Manual
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Error
symptom
Content
<ALL MODELS>
A. Video error_Color error
Check and replace Link Cable(LVDS) and contact condition
Established
date
Revised
date
A8/A9
1. Check and replace LVDS Cable
2. Check LVDS connection condition
Standard Repair Process Detail Technical Manual
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Error
symptom
Content
A. Video error_Color error
Adjustment Test pattern - ADJ Key
Established
date
Revised
date
A10
You can view 6 types of patterns using the ADJ Key
Checking item : 1. Defective pixel 2. Residual image 3. MODULE error (ADD-BAR,SCAN BAR..)
4.Video error (Classification of MODULE or Main-B/D!)
Appendix : Exchange T-Con Board (1)
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Solder defect, CNT Broken
Solder defect, CNT Broken
Solder defect, CNT Broken
T-ConDefect,CNT Broken
T-ConDefect,CNT Broken
Solder defect, CNT Broken
T-ConDefect,CNT Broken
Solder defect, CNT Broken
Abnormal Power Section
Solder defect, Short/Crack
Abnormal Power Section Solder defect, Short/Crack
Appendix : Exchange T-Con Board (2)
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Abnormal Power Section
Solder defect, Short/Crack
Abnormal Power Section
Fuse Open, Abnormal power section
Solder defect, Short/Crack
Abnormal Display
GRADATION
Noise
GRADATION
Appendix : Exchange PSU(LED driver)
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
No Light
Dim Light
Dim Light
Dim Light
No picture/Sound Ok
Appendix : Exchange the Module (1)
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Panel Mura, Light leakage
Crosstalk
Panel Mura, Light leakage
Press damage
Press damage
Crosstalk
Un-repairable Cases
In this case please exchange the module.
Press damage
Appendix : Exchange the Module (2)
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Vertical Block
Source TAB IC Defect
Horizontal Block
Gate TAB IC Defect
Horizontal Block
GateTABIC Defect
Gate TAB IC Defect
Vertical Line
Source TAB IC Defect
Horizontal Block
GateTABIC Defect
Gate TAB IC Defect
Vertical Block
Source TAB IC Defect
Horizontal line
GateTABIC Defect
Gate TAB IC Defect
Un-repairable Cases
In this case please exchange the module.
Standard Repair Process Detail Technical Manual
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Error
symptom
Content
B. Power error _No power
Check front display LED
Established
date
Revised
date
A11
ST-BY condition: Red
Front LED control :
Menu Option Standby Light On/Off
Standard Repair Process Detail Technical Manual
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Error
symptom
Content
B. Power error _No power
Check power input voltage and ST-BY 5V
Established
date
Revised
date
Check DC 3.5V, 12V, 24V
18 Pin (Power Board ↔ Main Board)
SMAW200-H18S5
A12
1
3
5
7
9
11
13 12V 14
15 12V 16
17 GND 18
Power on
3.5V
3.5V
GND
24V
GND
2
4
6
8
10
12
DRV ON
PDIM#1
3.5V
PDIM#2
24V
GND
12V
NC
GND
Standard Repair Process Detail Technical Manual
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Error
symptom
Content
B. Power error _No power
Checking method when power is ON
Established
date
Revised
date
A13
Check “power on(Pin 1)” pin is high(about 3.3V)
18 Pin (Power Board ↔ Main Board)
SMAW200-H18S5
1
3
5
7
9
11
13 12V 14
15 12V 16
17 GND 18
Power on
3.5V
3.5V
GND
24V
GND
2
4
6
8
10
12
DRV ON
PDIM#1
3.5V
PDIM#2
24V
GND
12V
NC
GND
Standard Repair Process Detail Technical Manual
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Error
symptom
Content
<ALL MODELS>
B. Power error _Off when on, off whiling viewing
POWER OFF MODE checking method
Established
date
Revised
date
A14
Checking order
1. Press the IN-START button of the remote controller for adjustment
2. Check the entry into adjustment item 3.
Standard Repair Process Detail Technical Manual
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Error
symptom
Content
<ALL MODELS>
C. Audio error_No audio/Normal video
Checking method in menu when there is no audio
Established
date
Revised
date
A15
Checking order
1. Press the MENU button on the remote controller
2. Select the AUDIO function of the Menu
3. Select TV Speaker Check
Standard Repair Process Detail Technical Manual
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Error
symptom
Content
<ALL MODELS>
C. Audio error_No audio/Normal video
Voltage and speaker checking method
when there is no audio
18 Pin (Power Board ↔ Main Board)
Established
date
Revised
date
A16
②
1
3
5
7
9
11
13 12V 14
15 12V 16
17 GND 18
Power on
SMAW200-H18S5
3.5V
3.5V
GND
24V
GND
2
4
6
8
10
12
DRV ON
PDIM#1
3.5V
PDIM#2
24V
GND
12V
NC
GND
Checking order
1. Check the contact condition of or 24V connector of Main Board
2. Measure the 24V input voltage supplied from Power Board
(If there is no input voltage, remove and check the connector)
3. Connect the tester RX1 to the speaker terminal and if you hear the Chik Chik sound
when you touch the GND and output terminal, the speaker is normal.
①
③
< Main Ass’y>
Standard Repair Process Detail Technical Manual
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
<ALL MODELS>
Error
symptom
< Sub Ass’y>
①
Content
D. Function error_ No response in remote controller,
key error
Remote controller operation checking method
②
Established
date
Revised
date
③
④
A17
P4600
1 GND
2 KEY1
3 KEY2
4 3.5V_ST
5 GND
6 LED_R
7 IR
8 GND
9 SCL
10 SDA
Checking order
1, 2. Check IR cable condition between IR & Main board.
3. Check the st-by 3.3V on the terminal 4.
4. When checking the Pre-Amp when the power is in ON condition, it is normal when the Analog
Tester needle moves slowly, and defective when it does not move at all.
< Main Ass’y>
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