zmonitor that are important for safety. These parts are
marked on the schematic diagram and the
Exploded View. It is essential that these critical parts
should be replaced with the manufacturer' s specified
parts to prevent electric shock, fire or other hazard.
• Do not modify original design without obtaining written
permission from manufacturer or you will void the
original parts and labor guarantee.
TAKE CARE DURING HANDLING THE LCD MODULE
WITH BACKLIGHT UNIT.
• Must mount the module using mounting holes arranged
in four corners.
• Do not press on the panel, edge of the frame strongly or
electric shock as this will result in damage to the
screen.
• Do not scratch or press on the panel with any sharp
objects, such as pencil or pen as this may result in
damage to the panel.
• Protect the module from the ESD as it may damage the
electronic circuit (C-MOS).
• Make certain that treatment person' s body are grounded
through wrist band.
WARNING
BE CAREFUL ELECTRIC SHOCK !
• If you want to replace with the new backlight or inverter
circuit, must disconnect the AC adapter because high
voltage appears at inverter circuit about 650Vrms.
• Handle with care wires or connectors of the inverter
circuit. If the wires are pressed cause short and may
burn or take fire.
Leakage Current Hot Check Circuit
Good Earth Ground
such as WATER PIPE,
To Instrument's
exposed
METALLIC PARTS
When 25A is impressed between Earth and 2nd Ground
for 1 second, Resistance must be less than 0.1
*Base on Adjustment standard
0.15µF
1.5 Kohm/10W
CONDUIT etc.
• Do not leave the module in high temperature and in
areas of high humidity for a long time.
• The module not be exposed to the direct sunlight.
• Avoid contact with water as it may a short circuit within
the module.
• If the surface of panel become dirty, please wipe it off
with a softmaterial. (Cleaning with a dirty or rough cloth
may damage the panel.)
CAUTION
Please use only a plastic screwdriver to protect yourself
from shock hazard during service operation.
• Replaceable batteries
CAUTION
RISK OF EXPLOSION IF BATTERY IS REPLACED BY
AN INCORRECT TYPE.
DISPOSE OF USED BATTERIES ACCORDING TO
THE INSTRUCTIONS.
REPLACE ONLY WITH THE SAME OR EQUIVALENT
TYPE.
ADVARSEL
Lithiumbatteri - Eksplosionsfare ved fejlagtig
håndtering.
Udskiftning må kun ske med batteri af samme
fabrikat og type.
Levér det brugte batteri tilbage til leverandøren.
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 conflict 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. Unl ess specified othe rwise in this service manua l, 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 flammable mixture.
Unless specified 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 fixtures specified in this
service manual.
CAUTION: Do not connect the test fixture 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 com monly are called
Electrostatically Sensitive (ES) Devices. Examples of typical ES
devices are integrated circuits and some field-effect transistors and
semiconductor "chip" compon ents. The following techniques
should be used to help reduce the incide nce 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.
Alter natively, obtain and wear a comme rcially availab le
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 classified as "anti-static" can generate
electrical charges sufficient to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate
electrical charges sufficient 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 re pla cem ent ES dev ice s 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. Mi nimiz e bodil y motio ns wh en h andli ng u npack ag ed
replacement ES devices. (Otherwise harmless motion such as
the brushing together of your clothes fabric or the lifting of your
foot from a carp eted floor can ge ner ate st atic electricit y
sufficient 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 1.25cm) 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 un til the solder fl 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
IC Remove/Replacement
Some chassis circuit boards have slotted holes (oblong) through
which the IC leads are inserted and then bent flat 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.
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
si de of the circuit board. (Use this techniq ue onl y 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.
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.
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.
3. Solder the connections.
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 an d loc ate the nearest component that is dir ect ly
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
This spec sheet is applied all of the Digital Signage Product
with LW43A chassis.
2. Specication
1) Because this is not a hot chassis, it is not necessary to
use an isolation transformer. However, the use of isolation
transformer will help protect test instrument.
2) Adjustment must be done in the correct order.
3) The adjustment must be performed in the circumstance of
25 °C ± 5 °C of temperature and 65 % ± 10 % of relative
humidity if there is no specic designation.
4) The input voltage of the receiver must keep AC 100-240
V~, 50/60 Hz.
5) At rst Worker must turn on the SET by using Power Only
key.
6) The receiver must be operated for about 5 minutes prior to
the adjustment when module is in the circumstance of over
15.
In case of keeping module is in the circumstance of 0 °C, it
should be placed in the circumstance of above 15 °C for 2
hours.
In case of keeping module is in the circumstance of below -20
°C, it should be placed in the circumstance of above 15 °C for
3 hours.
4. MAIN PCBA Adjustments
4.1. ADC Calibration [LS55A Model Digital
Only Model: does not apply]
- An ADC calibration is not necessary because MAIN
SoC (LGExxxx) is already calibrated from IC Maker
- If it needs to adjust manually, refer to appendix.
4.2. MAC Address
4.2.1. Equipment & Condition
1) Play le: keydownload.exe
4.2.2. Communication Port connection
1) Key Write: Com 1,2,3,4 and 115200 (Baudrate)
2) Barcode: Com 1,2,3,4 and 9600 (Baudrate)
4.2.3. Download process
1) Select the download items.
2) Mode check: Online Only
3) Check the test process : DETECT → MAC_WRITE
4) Play: START
5) Check of result: Ready, Test, OK or NG
4.2.4. Communication Port connection
1) Connect : PCBA Jig → RS-232C Port == PC → RS-232C
Port
Caution) When still image is displayed for a period of 20 minutes or longer (especially where W/B scale is strong. Digital
pattern 13ch and/or Cross hatch pattern 09ch), there can
some afterimage in the black level area
3. Adjustment items
3.1. Main PCBA Adjustments MAC Address
Download
1) ADC adjustment: Digital Only [does not apply]
2) EDID / DDC Download.
3) MAC Address Download
* Remark
- Above adjustment items can be also performed in
Final Assembly if needed. Adjustment items in both
PCBA and nal assembly stages can be checked by
using the INSTART Menu → ADJUST CHECK.
3.2. Final Assembly adjustment
1) White Balance adjustment
2) RS-232C functionality check
3) Factory Option setting per destination
4) Shipment mode setting (IN-STOP)
5) GND and HI-POT test
3.3. Appendix.
1) Ship-out mode
2) Service Option Default
3) Tool option menu, USB Download (S/W Update, Option,
▪ Each other connection to LAN Port of IP Hub and Jig
4.5 Serial number download
Connect Bar Code scan equipment and set by RS-232C
cable.
1) E2PROM Data Write
4.3.2. LAN inspection solution
1) LAN Port connection with PCB
2) Network setting at MENU Mode of SET (Installer Menu →
119 → 253 → Menu)
3) Setting automatic IP
4) Setting state conrmation
→ If automatic setting is nished, you conrm IP and MAC
Address.
4.4. LAN PORT INSPECTION(PING TEST)
4.4.1. Equipment setting
1) Play the LAN Port Test PROGRAM.
2) Input IP set up for an inspection to Test Program.
*IP Number : 12.12.2.2
4.4.2. LAN PORT inspection(PING TEST)
1) Play the LAN Port Test Program.
2) Connect each other LAN Port Jack.
3) Play Test (F9) button and conrm OK Message.
4) Remove LAN cable.
2) E2PROM Data Read
4.6 EDID/DDC Download (EDID PCM)
4.6.1 Overview
It is a VESA regulation. A PC or a MNT will display an optimal
resolution through information sharing without any necessity
of user input. It is a realization of “Plug and Play”.
4.6.2 Equipment
1) Since EDID data is embedded, EDID download JIG, HDMI
cable and D-sub are not need.
2) Adjust by using remote controller.
4.6.3 Download method
1) Press Adj. key on the Adj. R/C,
2) Select EDID D/L (PCM) menu.
3) By pressing Enter key, EDID download will begin
4) If Download is successful, OK is display, but If Download is
failure, NG is displayed.
5) If Download is failure, Re-try downloads.
→ Caution) When EDID Download, must remove HDMI / D-
1) Objective: To reduce each Panel's W/B deviation
2) How-it-works : When R/G/B gain in the OSD is at 192, it
means the panel is at its Full Dynamic Range. In order to
prevent saturation of Full Dynamic range and data, one of
R/G/B is xed at 192, and the other two is lowered to nd
the desired value.
3) Adjustment condition : normal temperature
- Surrounding Temperature : 25 °C ± 5 °C
- Warm-up time: About 5 Min
- Surrounding Humidity : 20 % ~ 80 %
- Before White balance adjustment, Keep power on
status, don’t power off
5.1.1.2. Adj. condition and cautionary items
1) Lighting condition in surrounding area surrounding lighting
should be lower 10 lux. Try to isolate adj. area into dark
surrounding.
2) Probe location: Color Analyzer (CA-210) probe should be
within 10cm and perpendicular of the module surface (80°~
100°)
3) Aging time
- After Aging Start, Keep the Power ON status during 5
Minutes.
- In case of LCD, Back-light on should be checked us-
End White Balance adjustment
(internal pattern disappears )
Ex) wb 00 00 -> Begin white balance auto-adj.
wb 00 10 -> Gain adj.
ja 00 ff -> Adj. data
jb 00 c0
...
...
wb 00 1f → Gain adj. completed
*(wb 00 20(Start), wb 00 2f(end)) → Off-set adj.
wb 00 ff → End white balance auto-adj.
Explantion
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 G gain same
amount of increasing G gain.
- 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) Adj. is performed in COOL, MEDIUM, WARM 3 modes of
color temperature.
6) Adj. is completed, Exit adjust mode using “EXIT” key on
Remote controller.
▪ If internal pattern is not available, use RF input. In EZ Adj.
menu 6.White Balance, you can select one of 2 Test-pattern
: ON, OFF. Default is inner (ON). By selecting OFF, you can
adjust using RF signal in 206 Gray pattern.
▪ Adj. Map
Cool
Medium
Warm
Adj. item
R GainjG00C0
G GainjH00C0
B GainjI00C0
R Cut
G Cut
B Cut
R GainjA00C0
G GainjB00C0
B GainjC00C0
R Cut
G Cut
B Cut
R GainjD00C0
G GainjE00C0
B GainjF00C0
R Cut
G Cut
B Cut
Command
(lower caseASCII)
CMD1CMD2MINMAX
Data Range
(Hex.)
Default
(Decimal)
5.1.5. Adj. method
5.1.5.1. Auto adj. method
1) Set TV in adj. mode using POWER ON key.
2) Zero calibrate probe then place it on the center of the
Display.
3) Connect Cable.(RS-232C to USB)
4) Select mode in adj. Program and begin adj.
5) When adj. is complete (OK Sign), check adj. status pre
mode. (Warm, Medium, Cool)
6) Remove probe and RS-232C cable to complete adj.
▪ W/B Adj. must begin as start command “wb 00 00” , and n-
ish as end command “wb 00 ff”, and Adj. offset if need.
5.1.6. Reference (White balance Adj. coordinate and
color temperature)
▪ Luminance : 216 Gray
▪ Standard color coordinate and temperature using CA-210 (CH14)
: [applied only LGD Module]
Mode
Cool0.271±0.0020.270±0.00213,000K-0.003
Medium0.286±0.0020.289±0.0029,300K0.0000
Warm0.313±0.0020.329±0.0026,500K0.0000
▪ Standard color coordinate and temperature using CA-210(CH 14)
– by aging time
1) ROW Direct LED models (applied only LGD Module) in LGEKR
(GUMI) And LGERS
Coordinate
xy
Temp∆uv
5.1.5.2. Manual adjustment. 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 10 cm of the surface.
3) Press ADJ key → EZ adjust using adj. R/C → White-Balance then press the cursor to the right(key ►). When KEY
(►) is pressed 204 Gray (80IRE) internal patterns will be
Measurement condition
EQ Off
AVL Off
Clear Voice Off
7. GND and HI-POT Test
7.1. GND & HI-POT auto-check preparation
1) Check the POWER CABLE and SIGNAL CABE insertion
condition
7.2. GND & HI-POT auto-check
1) Pallet moves in the station. (POWER CORD / AV CORD is
tightly inserted)
2) Connect the AV JACK Tester.
3) Controller (GWS103-4) on.
4) GND Test (Auto)
- If Test is failed, Buzzer operates.
- If Test is passed, execute next process (Hi-pot test).
Remove A/V CORD from A/V JACK BOX)
1) Connect the cable Assy on the set → 2) Turn on the Signage SET → 3) Press “EYE Button” on the adjustment of R/C
→ 4) Cover the “EYE Q sensor” on the front of Cable Assy
with your hands, hold it for 3 second
5) Check the sensor data on the screen, make certain that
data is below 20. If data isn’t below 20 in 3 seconds, EYE Q
sensor would be bad. You should change EYE Q sensor.
6) Uncover your hands from EYE Q sensor, hold it for 3 sec-
onds →
7) Check “Back Light(xxx)” on the screen, check data in-
crease, you should change EYE Q sensor
8.2 Pixel Sensor Inspection Manual
* Pixel Sensor Kit Parts
- 47LS55A SET / Power Cord / IR+Brightness Cable Assy /
2) Automatically detecting update le in USB Stick
- If your downloaded program version in USB Stick is
lower than that of Signage set, it didn’t work. Otherwise USB data is automatically detected.
3) Updating is staring.
4) Updating Completed, The Signage will restart automatically
5) If your Signage is turned on, check your updated version
and Tool option.(explain the Tool option, next stage)
* If downloading version is more high than your Signage
have, Signage 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 "Tool Option 1" and push "OK" key.
3) Punch in the number. (Each model has their number)
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 essenti al that these special safet y parts shoul d be replac ed with the same compo nents as
recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
M14-Display In/Out
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
DEBUG
+3.3V_NORMAL
SW201
JTP-1127WEM
12
3
4
For ISP
R223
3.3K
LS55A
M14 Symbol C
2013.10.21
2
36
Page 19
PLACE AT JACK SIDE
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
M14-AV In/Out
DDR3 VENDOR OPTION
+3.3V_NORMAL
4.7K
4.7K
R384
R382
OPT
OPT
R3854.7K
R3834.7K
DDR3_OPT1
DDR3_OPT2
HDMI_EN
LS55A
M14 Symbol B
+5V_ST
OPT
R389
33
IN
EN
AP2151WG-7
5
4
IC381
+5V_NORMAL
OPT
PZ1608U121-2R0TF
OUT
1
GND
2
FLG
3
2013.10.21
14.02.07
L8702
3
+5V_HDMI
36
Page 20
PAGE 4
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
LS55A
M14 DDR3-M0
2013.10.21
4
36
Page 21
PAGE 5
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
LS55A
M14 DDR3-M1
2013.10.21
5
31
Page 22
PAGE 6
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
11/05/31
LS55A
VCC & GND
2013.10.21
6
31
Page 23
+3.5V_ST
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
+3.3V_NORMAL
RL_ON
+3.5V_ST
+12V
C2306
0.1uF
L/DIM0_MOSI
R2301
R2300
10K
50V
10K
MMBT3906(NXP)
VA23001
AMOTECH CO., LTD.
L2304
UBW2012-121F
C2307
0.1uF
16V
UBW2012-121F
L2303
5.6V
Q2300
2
5V
ZD2303
14.02.06
1
3
POWER_WAFER_18PIN
PWR ON
3.5V
3.5V
GND
24V
GND
12V
12V
GND
GND
GND
L/DIM0_MOSI
DEV_POWER_WAFER_24PIN
P2300
SMAW200-H18S5
1
1
3
3
5
5
7
7
10
9
9
10
11
12
12
11
13
14
13
14
15
16
16
15
17
18
18
17
20
19
21
22
19
23
24
25
.
SMAW200-H24S2
P2301
INV ON
2
2
PDIM#1
4
4
3.5V
6
6
PDIM#2
8
8
24V
GND
12V
24V
GND
GND
L/DIMO_VS
L/DIM0_SCLK
L2306
UBW2012-121F
C2316
0.1uF
50V
R2309
100
R2354
4.7K
OPT
L/DIM0_VS
L/DIM0_SCLK
R2310
1K
R2355
4.7K
OPT
OPT
PWM_DIM
PWM_DIM2
C2358
0.1uF
INV_CTL
50V
C2359
10uF
L2312
35V
+24V
UBW2012-121F
+3.3V - eMMC 4.41(LG1311-A0)
+3.3V_NORMAL
L2302
PZ1608U121-2R0TF
C2305
0.1uF
16V
C2300
22uF
10V
3.3V_EMMC
+1.8V - eMMC 4.51(LG1311-B0)
+3.3V_NORMAL
IC2306
AZ1117EH-ADJTRG1
OUTIN
ADJ/GND
+12V
+3.3V_NORMAL
L2300
PZ1608U121-2R0TF
C2302
C2303
10uF
0.1uF
16V
16V
R23 03
68K
1/1 6W
1%
R2304
10K
R1
R2
R23 05
22K
1/1 6W
1%
POWER_ON/OFF1
R2302
5.1K
1/16W
1%
C2304
100pF
EN
VFB
VREG5
SS
3.3V_DCDC_TI
IC2300-*1
TPS54327DDAR
1
2
3
4
THERMAL
[EP]GND
VIN
8
VBST
9
7
SW
6
GND
5
3.3V_DCDC_RHOM
3.3V_DCDC_TI
C2312-*1
3300pF
50V
50V
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.
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Q1103
PMV48XP
D
S
SII9489
BODY_SHIELD
20
19
HOT_PLUG_DETECT
18
VDD[+5V]
HDMI_1
RSD-105156-100
JK1101
5V_DET_HDMI
5V_HDMI
R1101
1.8K
R1102
3.3K
BODY_SHIELD
HDMI_2
RSD-105156-100
17
DDC/CEC_GND
16
SDA
15
SCL
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+
20
19
HOT_PLUG_DETECT
18
VDD[+5V]
17
DDC/CEC_GND
16
SDA
15
SCL
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+
JK1501
5V_HDMI
18
27
36
45
9
18
27
36
45
9
+5V_ST
A2CA1
KDS184
D1106
85V
D1105
MMBD301LT1G
30V
C1121
0.1uF
50V
18
27
36
45
1
27
36
45
5V_HDMI_2
R1506
1.8K
R1507
3.3K
JP1104
JP1103
9
9
5V_DET_HDMI_2
/DIGITAL_DPM_CTRL
5V_HDMI
5.5V
VA23007
CEC_REMOTE
D1101
RCLAMP0544T.TCT
6.5VTO11.0V
D1102
RCLAMP0544T.TCT
6.5VTO11.0V
0.HDMI_1
R1123
4.7K
R11 24
4.7K
5V_HDMI_2
5.5V
JP1502
JP1501
8
VA23008
CEC_REMOTE
D1502
RCLAMP0544T.TCT
6.5VTO11.0V
D1503
RCLAMP0544T.TCT
6.5VTO11.0V
5V_HDMI_2
HDMI_HPD
HDMI_SDA
HDMI_SCL
+3.5V_ST
10K
R1508
C1503
0.1uF
HDMI_2_HPD
+5V_ST
A2CA1
KDS184
D1505
85V
D1504
MMBD301LT1G
30V
C1502
0.1uF
50V
+3.5V_ST
10K
R1167
VA1102
C1153
20V
0.1uF
25V
HDMI_SDA
HDMI_SCL
R0XCN
R0XCP
R0X0N
R0X0P
R0X1N
R0X1P
R0X2N
R0X2P
VA1501
20V
25V
HDMI_2_SDA
HDMI_2_SCL
R2XCN
R2XCP
R2X0N
R2X0P
R2X1N
R2X1P
R2X2N
R2X2P
2.HDMI_2
DET_HDMI_2
R1509
4.7K
R15 10 4.7K
R1119
470K
DET_HDMI
2.DP
3.DVI
M100ESD
MDS62110209
M101ESD
MDS62110215
M102
MDS62110209
DP_RXC-
DP_RXC+
DP_RX0DP_RX0+
DP_RX1-
DP_RX1+
DP_RX2DP_RX2+
ESD
HDMI_2_SDA
HDMI_2_SCL
C1104
G
2.2uF
R1161
100K
C1105
VDDA_33_S
R3XCN
R3XCP
R3X0N
R3X0P
R3X1N
R3X1P
R3X2N
R3X2P
M103ESD
MDS62110209
M104ESD
MDS62110209
M105ESD
MDS62110215
16V
C1107
22uF
22uF
10V
10V
0.1uF
16V
C1108
VDDA_12_S
VDD_12_S
SMD Bottom
M106ESD
M107ESD
M108ESD
C1106
2.2uF
16V
C1109
22uF
10V
0.1uF
10V
10uF
C1112
C1110
MDS62110215
MDS62110209
MDS62110215
R1120
1.HDMI_2
16V
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
P1303
12507WS-04L
1
2
3
4
5
+3.5V_ST
R1335
4.7K
R1344
4.7K
OPT
SOC_RX
SOC_TX
R1325
PAGE 9
5
9
4
3
2
1
10
5
4
3
2
1
10
RS-232C
OUT
P1302
SPG13-SD-0402
RS-232C
IN
P1301
SPG13-SD-0402
+3.5V_ST
R1327
10K
R1328
0
B
C
Q1301
2SC3875S(ALY)
E
R1326
47K
0
IR
IR
R1329
47K
+3.5V_ST
R1330
B
10K
R1331
0
C
Q1302
2SC3875S(ALY)
E
T2OUT
R2IN
T1OUT
R1IN
R1337
R1336
100
100
R1334100
R1333100
8
7
6
9
8
7
6
EXT UART SWITCH
INPUT
SW3
SW2
SW1
11
XNEC Download via USB
RS232_TXUART1_TX
RS232_RX
X
1
0NEC Interactive1
UART_SW1
XX
0
+3.5V_ST
SOC Debug0
NEC Debug
SOC CommnuicationX
RS232C
RS232C
NEC Interactive
RS232
SELECT
VCC
C1302
0.1uF
A
16V
SELECT
VCC
C1301
0.1uF
A
16V
6
ON SEMICONDUCTOR
ANALOG SWITCH
5
4
6
ON SEMICONDUCTOR
ANALOG SWITCH
5
4
Production & Adjust Mode Via RS232
NEC Debug via RS232
NEC Download via RS232
IC1304
NLASB3157DFT2G
1
2
3
EAN38256201
IC1303
NLASB3157DFT2G
1
2
3
EAN38256201
MODEConnection
B1
GND
B0
B1
GND
B0
UART1_TX
SOC_TX
UART1_RX
SOC_RX
Remocone Key
Power only (000)
TILT (101)
Download Program (11X)
Default Condition (100)
SOC_NEC_RX
UART2_TX
SOC_NEC_TX
UART2_RX
NLASB3157DFT2G
B1
1
ON SEMICONDUCTOR
ANALOG SWITCH
GND
2
B0
3
EAN38256201
NLASB3157DFT2G
B1
1
ON SEMICONDUCTOR
ANALOG SWITCH
GND
2
B0
3
EAN38256201
IC1306
IC1305
UART_SW2
SELECT
6
VCC
5
C1308
0.1uF
A
16V
4
SELECT
6
VCC
5
C1307
0.1uF
A
16V
4
+3.5V_ST
NEC_TX
NEC_RX
NEC_DBG_TXD
UART2_TX
NEC_DBG_RXD
UART2_RX
NLASB3157DFT2G
B1
1
ON SEMICONDUCTOR
ANALOG SWITCH
GND
2
B0
3
EAN38256201
NLASB3157DFT2G
B1
1
ON SEMICONDUCTOR
ANALOG SWITCH
GND
2
B0
3
EAN38256201
IC1308
IC1307
UART_SW3
SELECT
6
VCC
5
C1310
0.1uF
A
4
SELECT
6
VCC
5
C1309
0.1uF
A
4
+3.5V_ST
16V
16V
UART1_RX
T2OUT
R2IN
C1311
0.1uF
C1314
0.01uF
C1313
0.1uF
50V
50V
50V
C1+
V+
C1-
C2+
C2-
V-
DOUT2
RIN2
C1312
0.1uF
50V
BUF_TX
OPS_TX
RS232_TX
BUF_RX
IC1310
MAX3232CDR
1
2
3
4
5
6
7
8
VCC
16
GND
15
DOUT1
14
RIN1
13
ROUT1
12
DIN1
11
DIN2
10
ROUT2
9
R131222
R131322
R131022
R13110
READY
R130922
C1315
22uF
16V
T1OUT
R1IN
R13140
L1301
BLM18SG121TN1D
D1304
BAT54
30V
D1303
BAT54
R1332
30V
20K
2Y0
2Y2
2-COM
2Y3
2Y1
INH
GND_1
GND_2
INPUT
INH
0
00
0
0
R1339
R1338
4.7K
1K
D1305
BAT54
30V
IC1309
SN74LV4052APWR
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
RS-232C MUX
ON channel
A
B
0
1Y0, 2YO1S7 NORMAL
0
1Y1, 2Y1
1
0 1Y2, 2Y21
1Y3, 2Y3
1
X
X
9
NONE1
R1340
4.7K
R1343
0
R1341
VCC
1Y2
1Y1
1-COM
1Y0
1Y3
A
B
+3.5V_ST
20K
BUF_RX
R13420
R1323
R1315
4.7K
MODE
RS-232C-CLONE
EXTERNAL DEVICE
RESERVED
+3.5V_ST
0
R132422
R132122
R132222
R131922
R13200
READY
R131722
R131822
R1316
4.7K
BUF_TX
OPS_RX
BUF_TX
RS232_RX
BUF_RX
RS232_CTL0
RS232_CTL1
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.
LS55A
RS232/UART
2013.10.21
13
Page 26
PAGE 10
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
IR & LIGHT SENSOR
JK1401
KJA-PH-7-0177
M7 M7
M4 M4
M3 M3
M1 M1
M6 M6
M5 M5
VA23002
+3.5V_ST
5.6V
READY
VA23003
5.6V
+3.5V_VCTL
R1406 22
R1420
R1418
R1419
VA23004
5.6V
0
0
0
14.02.20
READY
R1401
10K
IR
EYE_SCL
EYE_SDA
Internal IR (Ready for DV)
IC8704
AO-R123C7G-LG
OPT
14.02.06
GND
G
VS
V
OUT
O
OPT
R1402
330
R1405
47
OPT
+3.5V_VCTL
IR
Digital Thermal Sensor
I2C_SDA4
I2C_SCL4
R1403
33
R1404
33
SDA
SCL
OS
GND
IC1401
MM3286CFBE
1
2
0x4A
3
4
+3.3V_NORMAL
C1408
0.1uF
50V
R1414
R1422
VDD
8
A0
7
A1
6
A2
5
10K
OPT
R1415
R1416
10K
10K
OPT
R1423
R1417
0
0
0
OPT
RGB SENSOR
JK1402
KJA-PH-7-0177
M7 M7
M4 M4
M3 M3
M1 M1
M6 M6
M5 M5
5.6V
VA23005
R1424
0
R1425
0
5.6V
VA23006
14.02.20
+3.3V_NORMAL
R1427
0
RGB_SCL
RGB_SDA
P1402
12507WR-03L
4
P1403
12507WR-04L
5
KEY_IN
3p wafer_LS55A
1
2
3
1
2
3
4
4p wafer_LS75A
14.02.07
L1406
120-ohm
L1407
120-ohm
+3.5V_ST
R1410
10K
R1412100
R1411
10K
R1413100
C14 06
0.1 uF
C1407
0.1uF
16V
KEY1
KEY2
16V
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
LS55A
IR/KEY/TEMP
2013.10.21
14
31
Page 27
PAGE 11
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
USB1-USB2.0
+5V_USB_3
C151
22uF
10V
5V
ZD2305
USB3_DM
USB3_DP
JK151
3AU04S-305-ZC-(LG)
1234
USB DOWN STREAM
5
D151
RCLAMP 050 2BA
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.
LS55A
USB
2013.10.21
15
Page 28
DP IN / OUT
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
DP IN
JK1701
3VD51203-L7JJ-9H
ML_LANE_3-
1
1
GND0
2
2
3
ML_LANE_3+
3
4
ML_LANE_2-
4
5
GND1
5
6
ML_LANE_2+
6
7
ML_LANE_1-
7
GND2
8
8
9
ML_LANE_1+
9
10
ML_LANE_0-
10
11
GND3
11
12
ML_LANE_0+
12
13
CA_DET
13
14
DVI_DET/CEC
14
15
AUX_CH+
15
16
GND4
16
17
AUX_CH-
SHIELD
17
18
HOT_PLUG
18
19
RETURN
19
20
DP_PWR[3.3V]
20
21
C1701
4.7uF
10V
DP IN
C1702
0.1uF
16V
+3.5V_ST
L1701
BLM18SG121TN1D
JP1701
D1701
IP4294CZ10-TBR
@volta
10
1
9
2
3
8
4
7
6
5
JP1703
JP1702
IP4294CZ10-TBR
@volta
1
2
3
4
5
IP4294CZ10-TBR
1
2
3
4
5
R1702
100
READY
1M
R1701
D1702
10
9
8
7
6
D1703
@volta
R1703
PAGE 12
0.1uFC1716
16V
0.1uFC1717
16V
0.1uFC1715
16V
0.1uFC1718
16V
10
9
8
7
6
R1708 10K
R1709 10K
1M
DP_VDD33
1M
1M
R1704
R1706
READY
R1715 10K
R1710 10K
R1711 10K
R1716 10K
READY
R1717
10
R1718
10K
C1713
0.1uF
16V
0.1uFC1719
16V
0.1uFC1720
16V
0.1uFC1721
16V
0.1uFC1722
16V
R1723 10K
R1721 10K
DP_DET
DPRX_CAB_DET0
R1725
20
DPRX_AUXP
DPRX_LN3N
DPRX_LN3P
DPRX_LN2N
DPRX_LN2P
DPRX_LN1N
DPRX_LN1P
DPRX_LN0N
DPRX_LN0P
To STDP4320
From STDP4320
1M
READY
R1705
DPTX1_LN0P
DPTX1_LN0N
DPTX1_LN1P
DPTX1_LN1N
DPTX1_LN2P
DPTX1_LN2N
DPTX1_LN3P
DPTX1_LN3N
DPTX1_DDC_SCL
DPTX1_AUXP
DPTX1_AUXN
DPTX1_DDC_SDA
R1707
C1714
0.1uF
16V
R1714
R1719
10K
R1720
10
100K
1M
R1726
20
DPRX_AUXN
DPRX_CAB_DET1
DPRX_HPD_OUT
DP OUT
JK1702
ML_LANE_0+
GND3
ML_LANE_0-
ML_LANE_1+
ML_LANE_1-
ML_LANE_2+
ML_LANE_2-
ML_LANE_3+
ML_LANE_3-
CA_DET
DVI_DET/CEC
AUX_CH+
GND4
AUX_CH-
HOT_PLUG
RETURN
DP_PWR[3.3V]
C1723
0.1uF
16V
3VD51203-L7JJ-9H
1
1
2
2
3
3
4
4
5
GND2
5
6
6
7
7
8
GND1
8
9
9
10
10
11
GND0
11
12
12
13
13
14
14
15
15
16
16
17
17
18
18
19
19
20
20
C1724
4.7uF
10V
21
DP OUT
SHIELD
16V
0.1uF C1703
16V
0.1uF C1704
R1712
0
R1713
0
READY
READY
C1705
0.1uF
0.1uFC1706
0.1uFC1707
0.1uFC1708
0.1uFC1709
0.1uFC1710
0.1uFC1711
0.1uFC1712
D1706
IP4294CZ10-TBR
@volta
16V
16V
16V
16V
16V
16V
16V
16V
R172710K
R172410K
R172810K
R172910K
R173110K
R173210K
READY
READY
READY
READY
R173010K
READY
READY
READY
R173310K
READY
R1734
R1735
100K
READY
DP_VDD33
R1736
R1737
READY
100K
D1704
IP4294CZ10-TBR
@volta
10
9
8
7
6
1
2
3
4
5
D1705
IP4294CZ10-TBR
@volta
10
9
8
7
6
DPTX1_CONFIG1
DPTX1_CONFIG2
1
2
3
4
5
10
1
9
2
3
8
4
7
6
5
JP1704
JP1705
R1738
1M
+3.5V_ST
BLM18SG121TN1D
1M
R1739
L1702
JP1706
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.
DPTX1_HPD
R1722
1K
R1740
1M
LS55A
DP IN / OUT
2013.10.21
17
Page 29
IC1880
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
LS55A2013.10.21
STDP4320
18
Page 30
STDP4320 POWER
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
2013.10.21LS55A
19STDP4320 PWR
Page 31
AMP_MUTE
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
KJA-PH-0-0177
JK5601
SPK R
5 GND
4 L
3 DETECT
1 R
SPK_R+
SPK_R-
LS55A
AUDIO
KJA-PH-0-0177
JK5602
SPK L
5 GND
4 L
3 DETECT
1 R
2013.10.21
SPK_L+
SPK_L-
20
Page 32
M14
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
PC_L_IN
VA2204
5.6V
OPT
PC AUDIO
JK2202
KJA-PH-0-0177
5GND
4L
3DETECT
1R
PAGE 16
PC_R_IN
VA2205
5.6V
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.
Audio In
LS55A
Audio In
2013.10.21
22
Page 33
Main to Docking Board
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
P2401
FI-RE41S-HF-J-R1500
OPS_WAFER_LS75A
14.02.06
14.02.07
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
PWR_STATUS
PS_ON#
PB_DET
POWER_ON
OPS_RXC-
OPS_RXC+
OPS_RX0-
OPS_RX0+
OPS_RX1-
OPS_RX1+
OPS_RX2-
14.02.07
OPS_DVI_HPD
OPS_RX2+
14.02.07
CEC_REMOTE
OPS_TX
OPS_RX
PAGE 17
+3.5V_ST
R24034.7K
R24024.7K
OPS_SDA
OPS_SCL
OPS_L_IN
+3.5V_ST
OPS_R_IN
D2402
D24 01
14.02.07
4.7K
R8815
SYSTEM_FAN
14.02.07
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.
LS55A
OPS
2013.10.21
24
Page 34
LVDS
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
LS55A
LVDS INTERFACE
BSD-NC4_H072-HD
2013.10.21
30
Page 35
LOCAL DIMMING
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
[To LED DRIVER]
P7400
12507WR-08L
L/DIM_OUT_8P
PAGE 20
1
2
3
4
5
6
7
8
9
R7401
10K
L/DIM_OUT_8P
R7403
R7402
33
33
L/DIM_OUT_8P
L/DIM_OUT_8P
L/DIM0_SCLK
L/DIM0_MOSI
I2C_SCL2
I2C_SDA2
L/DIM0_VS
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
LOCAL DIMMING
BSD-NC4_H074-HD
2013.10.21
31
Page 36
eMMC I/F
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
2013.10.21LS55A
36NEC Micom
Page 38
Ethernet Block
Copyright ⓒ 2014 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Page 24
WOL_ON
+3.5V_ST
R3701
33
OUT
1
GND
2
FLG
3
EPHY_RDP
EPHY_RDN
EPHY_TDP
EPHY_TDN
+3.5V_ST_LAN
IC3702
AP2151WG-7
IN
5
EN
4
Route Single 50 Ohm, Differential 100 Ohm
ET_COL/SNI
+3.5V_ST_LAN
L3701
PZ1608U121-2R0TF
L3702
PZ1608U121-2R0TF
Place this cap. near IC
C3701
10uF
10V
OPT
LAN_AVDD33
C3703
C3705
0.1uF
0.1uF
16V
LAN_DVDD33
C3704
0.1uF
16V
25MHz, CL 18pF, ESR , max 30 Ohm, +/-30ppm
C3702
0.1uF
16V
Place 0.1uF close to each power pins
16V
Place this Res. near IC
R3704
2.49K 1%
LAN_AVDD33
R3703
4.7K
LAN_DVDD33
4.7K
4.7K
C3706
15pF
50V
C3707
15pF
50V
READY
PHY ADDRESS CONFIG
CONFIG PHY_ADDRESS = 11
Place this cap. near IC
C3708
C3711
0.1uF
10uF
16V
10V
OPT
X3701
25.0MHz
AVDD10OUT
MDI+[0]
MDI-[0]
MDI+[1]
MDI-[1]
AVDD33_1
R3705
R3706
RSET
RXDV
R3707
0
[EP]
LAN_AVDD33
AVDD33_2
CKXTAL1
CKXTAL2
30
31
32
1
THERMAL
2
33
3
IC3701
4
RTL8201F-VB-CG
5
6
7
8
9
11
RXD[0]10RXD[1]
RXD[2]/INTB
R3709 22
R3708 22
R3710 22
ET_RXER
ET_COL/SNI
COL28RXER/FXEN
DVDD10OUT
27
29
12
13
14
RXC
DVDD33
RXD[3]/CLK_CTL
C3709
L3703
10pF
50V
C3710
4.7K
10pF
R3711
50V
EPHY_CRS_DV
EPHY_ACTIVITY
R371222
LED1/PHYAD[1]
CRS/CRS_DV
25
26
24
23
22
21
20
19
18
17
15
16
TXC
TXD[0]
100NH
Place near IC
EPHY_TXD0
LED0/PHYAD[0]/PMEB
MDIO
MDC
PHYRSTB
TXEN
TXD[3]
TXD[2]
TXD[1]
LAN_DVDD33
C3712
0.1uF
16V
LAN_DVDD33
4.7K
R3713
/RTL8201_PMEB
EPHY_MDC
EPHY_EN
EPHY_TXD1
4.7K
R3714
LAN_AVDD33
R3716
4.7K
R3715
1.5K
1/16W
C3713
0.1uF
OPT
5%
LAN_AVDD33
R3717
4.7K
16V
/RTL8201_PMEB
EPHY_ACTIVITY
ET_RXER
R37180EPHY_MDIO
C3716
2.2uF
16V
14.02.20
LAN_JACK_POWER
JK3701
RT7-104A8K2A
TD+
R1
TD-
R2
RD+
R3
TCT
R4
RCT
R5
RD-
R6
7
R7
GND
R8
9
SHIELD
14.02.07
/RST_PHY
/RTL8201_RESET
R371922
22
R8820
READY
LAN_JACK_POWER
C3714
0.1uF
16V
C3715
0.01uF
50V
VA3701
5.5V
VA3702
5.5V
VA3703
5.5V
VA3704
5.5V
EPHY_TDP
EPHY_TDN
EPHY_RDP
EPHY_RDN
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FIRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFACTURES SPECIFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
EPHY_RXD0
EPHY_RXD1
/RTL8201_INT
EPHY_REFCLK
LS55A
Ethernet
2013.10.21
37
Page 39
Page 40
LGE Internal Use Only
M14(Signage) Trouble Shooting Guide
2014. 06. 10
Signage HW Team
Page 41
Contents of Monitor Signage Standard Repair Process
Vertical/Horizontal bar, residual image, light spot,
external device color error
No power 5
No audio/Normal video 7
Remote control & Local switch checking
4
9
12 F. Exterior error Exterior defect 12
First of all, Check whether there is SVC Bulletin in GCSC System for these model.
1
Page 42
Standard Repair Process
Established
date
Revised date
Signage Monitor
Error
symptom
A. Video error
No video/ Normal audio
First of all, Check whether all of cables between board is inserted properly or not.
(Main B/D↔ Power B/D, Power Cable, FFC LVDS Cable, Key Cable,,,)
☞A4 ☞A1
N
Y
Check Back Light
On with naked eye
☞A2
Check Power Board 24v output
On
Normal
voltage
Repair Power
Board or parts
Y
N
N
Check Power Board
12v,3.5v etc.
Replace Inverter
Y
or module
Normal
voltage
N
Repair Power Board
or parts
End
No video
Normal audio
Normal
audio
Move to No
video/No audio
Y
2014.06.10
1/12
Replace T-con Board
or module
And Adjust VCOM
※Precaution
Always check & record S/W Version and White
Balance value before replacing the Main Board
☞A7 & A3
Replace Main Board
2
Re-enter White Balance value
Page 43
Standard Repair Process
Signage Monitor
symptom
No Video/
No audio
Error
☞A4
Check various voltages
of Power Board
( 3.5V,12V,or 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
2014.06.10
2/12
3
Page 44
Standard Repair Process
Signage Monitor
☞A8
Check color by input
-External Input
-HDMI
-Display Port
-DVI
☞A12
Check Test pattern
Error
symptom
Color
error?
Check error color
input mode
Y
N
External Input/
A. Video error
Color error
☞ A10
※ Check and
replace Link
Cable
(LVDS) and
contact
condition
HDMI
error
Color
error?
N
Check
external
device and
cable
Y
Replace Main B/D
Established
date
Revised date
External device
/Cable
normal
N
Color
error?
End
Y
2014.06.10
3/12
Y
Replace module
N
Replace Main B/D
DP/DVI
error
Check external
device and
cable
4
Request repair
for external
device/cable
N
External device
/Cable
normal
Y
Replace Main B/D
Page 45
Standard Repair Process
A. Video error
Signage Monitor
Error
symptom
Vertical / Horizontal bar, residual image,
light spot, external device color error
Vertical/Horizontal bar, residual image, light spot
☞A8
Check color condition by input
-External Input
-HDMI / DP / DVI
☞A12
Check Test pattern
Screen
normal?
N
Replace
module
Y
Check external
device
connection
condition
Request repair
for external
External device screen error-Color error
Check S/W Version
Check
version
Y
S/W Upgrade
N
Check screen
condition by input
-External Input
-HDMI / DP/ DVI
Normal?
N
device
Y
External
Input
error
☞ A10
Check and
replace Link
Cable
Established
date
Revised date
Screen
normal?
End
N
Replace Main B/D
Y
Connect other
external device
and cable
(Check normal operation of
External Input, Component,
and HDMI/DVI/DP by
connecting Jig, pattern
Generator ,Set-top Box etc.
2014.06.10
Screen
normal?
Y
N
4/12
Replace
Module
Screen
normal?
End
Replace
Main B/D
N
Y
Normal
screen?
Y
End
N
5
RGB
error
HDMI
DP
DVI error
Connect other external
device and cable
(Check normal operation of
External Input, Component,
and HDMI/DVI/DP by
connecting Jig, pattern
Generator ,Set-top Box etc.
Request repair for
external device
Y
Screen
normal?
N
Replace
Main B/D
Page 46
Standard Repair Process
Signage Monitor
Check
Power LED
Error
symptom
Power LED
On?
N
Check Power cord
was inserted properly
N
Normal?
Y
Close
Y
Check ST-BY 3.5V
☞A18
B. Power error
No power
DC Power on
by pressing Power Key
On Remote control
Normal
voltage?
Y
Y
N
Established
date
2014.06.10
Revised date
☞A19
Y
N
Check Power
On ‘”High”
Replace Main B/D
Normal
operation?
☞A4
Measure voltage of each output of Power B/D
N
Y
Replace Main B/D
Normal
voltage?
Replace Power B/D
OK?
Y
5/12
Replace
Power
B/D
Replace Power
B/D
6
Page 47
Standard Repair Process
Signage Monitor
Check outlet
Check A/C cord
Check for all 3- phase
power out
Error
symptom
Error?
Fix A/C cord and
Outlet and check
each 3 phase out
B. Power error
Off when on, off while viewing, power auto on/off
☞A22
N
Y
Check Power Off
Mode
☞A19
(If Power Off mode is
not displayed)
Check Power B/D
voltage
※ Caution
Check and fix exterior
of Power B/D Part
Established
date
Revised date
CPU
Abnormal
Abnormal
1
Normal
voltage?
N
Replace Power B/D
2014.06.10
Replace Main B/D
Y
Replace Main B/D
Normal?
Replace Power B/D
Y
N
6/12
End
* Please refer to the all cases which
can be displayed on power off mode.
Status Power off List Explanation
"POWEROFF_REMOTEKEY" Power off by REMOTE CONTROL
"POWEROFF_OFFTIMER" Power off by OFF TIMER
"POWEROFF_SLEEPTIMER" Power off by SLEEP TIMER
"POWEROFF_INSTOP" Power off by INSTOP KEY
"POWEROFF_AUTOOFF" Power off by AUTO OFF
Normal
Abnormal
"POWEROFF_ONTIMER" Power off by ON TIMER
"POWEROFF_RS232C" Power off by RS232C
"POWEROFF_RESREC" Power off by Reservated Record
"POWEROFF_RECEND" Power off by End of Recording
"POWEROFF_SWDOWN" Power off by S/W Download
"POWEROFF_UNKNOWN" Power off by unknown status except listed case
"POWEROFF_ABNORMAL1" Power off by abnormal status except CPU trouble
"POWEROFF_CPUABNORMAL" Power off by CPU Abnormal
7
Page 48
Standard Repair Process
Signage Monitor
No audio
Screen normal
Error
symptom
☞A24 ☞A25
Check user
Speaker Out
menu >
C. Audio error
No audio/ Normal video
Check audio B+ 24V
Off
Cancel OFF
N
Y
of Power Board
Replace Power Board and repair parts
Established
date
Revised date
Normal
voltage
Y
N
2014.06.10
7/12
Check Speaker
disconnection
Disconnection
Y
Replace Speaker
8
N
Replace MAIN Board
End
Page 49
Standard Repair Process
Signage Monitor
→ abnormal audio/discontinuation/noise is same after “Check input signal” compared to No audio
Check input
signal
-RF
-External Input
signal
Error
symptom
Signal
normal?
N
Wrecked audio/ discontinuation/noise
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
C. Audio error
Wrecked audio/
Discontinuation/
Noise for
all audio
Wrecked audio/
Discontinuation/
Noise only
Wrecked audio/
Discontinuation/
Noise only
Wrecked audio/
Discontinuation/
Noise only
for External Input
for D-TV
for Analog
Established
date
Revised date
Check and replace
speaker and
connector
Replace Main B/D
Connect and check
other external device
2014.06.10
☞A25
Check audio
B+ Voltage (24V)
Normal
voltage?
N
Replace Power B/D
Replace Main B/D
Normal
audio?
Y
N
8/12
Y
End
9
Check and fix external device
Page 50
Standard Repair Process
D. General Function Problem
Remote control & Local switch checking
Signage Monitor
Error
symptom
1. Remote control(R/C) operating error
☞A27
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?
N
Check & Replace
Baterry of R/C
operating?
Y
Normal
Check & Repair
Cable connection
Connector solder
Y
Close
N
Normal
operating?
Y
Close
☞A27
N
Check B+ 3.5V
On Main B/D
Established
date
Revised date
2014.06.10
☞A27
Normal
Voltage?
N
Y
Check IR
Output signal
☞A4
Check 3.5v on Power B/D
Replace Power B/D or
Replace Main B/D
(Power B/D don’t have problem)
9/12
Replace
Main B/D
Y
Normal
Signal?
N
Repair/Replace
IR B/D
Replace R/C
10
Page 51
Standard Repair Process
Signage Monitor
Check
input
signal
Error
symptom
Signal
input?
Y
N
Check and fix
external device/cable
D. Function error
External device recognition error
Check technical
information
- Fix information
- S/W Version
Technical
information?
accordance
with technical
information
Y
Fix in
N
External Input
Recognition error
Recognition error
Established
Revised date
HDMI/ DP
DVI, Optical
date
2014.06.10
10/12
Replace Main B/D
Replace Main B/D
11
Page 52
Standard Repair Process
Signage Monitor
Identify
noise
type
Error
symptom
Circuit
noise
Circuit noise, mechanical noise
Check
location of
E. Noise
noise
Mechanical
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
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)
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
OR
(For models without any fix information, provide
the description)
2014.06.10
11/12
12
Page 53
Standard Repair Process
Signage Monitor
Error
symptom
Zoom part
with exterior
damage
F. Exterior defect
Module
damage
Cabinet
damage
Remote
controller
damage
Exterior defect
Replace module
Replace cabinet
Replace remote controller
Established
date
Revised date
2014.06.10
12/12
Stand
dent
Replace stand
13
Page 54
Contents of Monitor Signage Standard Repair Process Detail Technical Manual
No. Error symptom Content Page Remarks
1
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
5
6 Monitor Signage connection diagram A8
A. Video error Color error
7 Check Link Cable (LVDS) reconnection condition A10
8 Adjustment Test pattern - ADJ Key A12
A. Video error Vertical/Horizontal bar,
9
residual image, light spot
10 Adjustment Test pattern - ADJ Key A12
11 <Appendix>
12 Exchange Module itself (1) A-4/5
13 Exchange Module itself (2) A-5/5
Defected Type caused by Main/ Inverter/
Module
Check LCD back light with naked eye A1
Monitor Signage Version checking method
Check Link Cable (LVDS) reconnection condition
Exchange LED driver Board (PSU) A-3/5
A7
A10
A11
Page 55
Contents of LCD TV Standard Repair Process Detail Technical Manual
Continued from previous page
No. Error symptom Content Page Remarks
14
B. Power error No power
15 Checking method when power is ON A19
16
17
18
19
B. Power error_Off when on, off while
viewing
C. Audio error_No audio/Normal video
D. Function error_ No response in remote
controller, key error
Check power input Voltage & ST-BY 5V
POWER OFF MODE checking method A22
Checking method in menu when there is no
audio
Voltage and speaker checking method when
there is no audio
Remote controller operation checking method A27
A18
A24
A25
Page 56
Standard Repair Process Detail Technical Manual
Signage Monitor
<All MODELS>
Error
symptom
Content
A. Video error_No video/Normal audio
Check LCD back light with naked eye
Established
date
Revised
date
2014. 06 .10
A1
After turning on the power and disassembling the case, check with the naked eye, whether
you can see light from module holes.
A1
Page 57
Standard Repair Process Detail Technical Manual
Signage Monitor
Error
symptom
Content
A. Video error_No video/Normal audio
LED driver B+ 24V measuring method
Established
date
Revised
date
Check the DC 24V
18 Pin
9, 10 24V
2014. 06 .10
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.
A2
Page 58
Standard Repair Process Detail Technical Manual
Signage Monitor
<ALL MODELS>
Error
symptom
Content
A. Video error_No video/Normal audio
Check White Balance value
Established
date
Revised
date
2014. 06 .10
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 10.
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.
A3
Page 59
Standard Repair Process Detail Technical Manual
Signage Monitor
Error
symptom
Content
A. Video error_No video/ Audio
Power Board voltage measuring method
Established
date
Revised
date
2014. 06 .10
Check the DC 3.5V, 12V, 24V.
18 Pin (Power Board ↔ Main Board)
SMAW200-H18S5
A4
1
3
5
7
9
11
13
15
17 GND 18
Power on
3.5V
3.5V
GND
24V
GND
12V
12V
2
4
6
8
10
12
14
16
Inverter On
PWM#1
3.5V
PWM#2
24V
GND
12V
N.C
GND
A4
Page 60
Standard Repair Process Detail Technical Manual
Signage Monitor
Error
symptom
Content
A. Video error_Video error, video lag/stop
Monitor Signage Version checking method
Established
date
Revised
date
2014. 06 .10
A7
<ALL MODELS>
1. Checking method for remote controller for adjustment
Version
Press the IN-START with the remote
controller for adjustment
A7
Page 61
Standard Repair Process Detail Technical Manual
Signage Monitor
[LS55A]
Error
symptom
Content
A. Video error _Vertical/Horizontal bar, residual
image, light spot
Monitor Signage connection diagram
Established
date
Revised
date
2014. 06 .10
A8
As the part connecting to the external input, check the screen condition by signal
A8
Page 62
Standard Repair Process Detail Technical Manual
Signage Monitor
Error
symptom
Content
Check Link Cable reconnection condition
A. Video error_Color error
Established
date
Revised
date
2014. 06 .10
A10
Check the contact condition of the Link Cable, especially dust or mis insertion.
A10
Page 63
Standard Repair Process Detail Technical Manual
Signage Monitor
Error
symptom
Content
A. Video error_Color error
Adjustment Test pattern - ADJ Key
Established
date
Revised
date
2014. 06 .10
A12
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!)
A12
Page 64
Appendix : Exchange LVDS Cable or Main B/D (1)
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
Page 65
Appendix : Exchange LVDS Cable or Main B/D (2)
Abnormal Power Section
Solder defect, Short/Crack
Abnormal Power Section
Fuse Open, Abnormal power section
Solder defect, Short/Crack
Abnormal Display
Noise GRADATION GRADATION
Page 66
Appendix : Exchange Power Board
No Light
Dim Light
Dim Light
Dim Light
No picture/Sound Ok
A - 3/5
Page 67
Appendix : Exchange the Module (1)
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
A - 4/5
Page 68
Appendix : Exchange the Module (2)
Vertical Block
Source TAB IC Defect
Horizontal Block
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.
Horizontal Block
GateTABIC Defect
Gate TAB IC Defect
A - 5/5
Page 69
Standard Repair Process Detail Technical Manual
Signage Monitor
Error
symptom
Content
B. Power error _No power
Check power input voltage and ST-BY 3.5V
Established
date
Revised
date
2014. 06 .10
Check DC 3.5V, 12V, 24V
18 Pin (Power Board ↔ Main Board)
SMAW200-H18S5
A18
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
A18
Page 70
Standard Repair Process Detail Technical Manual
Signage Monitor
Error
symptom
Content
B. Power error _No power
Checking method when power is ON
Established
date
Revised
date
2014. 06 .10
Check “power on(Pin 1)” pin is high(about 3.3V)
18 Pin (Power Board ↔ Main Board)
SMAW200-H18S5
A19
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
A19
Page 71
Standard Repair Process Detail Technical Manual
Signage Monitor
<ALL MODELS>
Error
symptom
Content
B. Power error _Off when on, off whiling viewing
POWER OFF MODE checking method
Established
date
Revised
date
2014. 06 .10
A22
Entry method
1. Press the IN-START button of the remote controller
for adjustment
2. Check the entry into adjustment item 3
A22
Page 72
Standard Repair Process Detail Technical Manual
Signage Monitor
<ALL MODELS>
Error
symptom
Content
5 Sec
C. Audio error_No audio/Normal video
Checking method in menu when there is no audio
Checking method
1. Press the MENU button on the remote controller for five seconds.
2. A balloon is marked to a screen.
3. Select the Speaker of Signage Setup
4. Select “ON”
Established
date
Revised
date
2014. 06 .10
A24
A24
Page 73
Standard Repair Process Detail Technical Manual
Signage Monitor
[LS55A]
Error
symptom
Content
C. Audio error_No audio/Normal video
Voltage and speaker checking method
when there is no audio
18 Pin (Power Board ↔ Main Board)
①
SMAW200-H18S5
Established
date
Revised
date
②
2014. 06 .10
A25
1
3
5
7
9
11
13 12V 14
15 12V 16
17 GND 18
Power on
3.5V
3.5V
GND
24V
GND
Checking order when there is no audio
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)
2
4
6
8
10
12
DRV ON
PDIM#1
3.5V
PDIM#2
24V
GND
12V
NC
GND
< Main Ass’y>
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.
A25
Page 74
Standard Repair Process Detail Technical Manual
Signage Monitor
[LS55A Models]
Error
symptom
Content
D. Function error_ No response in remote controller,
key error
Remote controller operation checking method
M7
M4
M3
M1
M6
M5
JK1401
GND
+3.5V_ST
SCL
SDA
NC
IR
Established
date
Revised
date
2014. 06 .10
A27
Checking order
JK1401
1. Check IR cable condition between IR & Main board
2. Check the st-by 3.5V on the terminal M1.
3. 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.
A27
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