Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the
Schematic Diagram and Exploded View.
It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent
Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
General Guidance
An isolation Transformer should always be used during the
servicing of a receiver whose chassis is not isolated from the AC
power line. Use a transformer of adequate power rating as this
protects the technician from accidents resulting in personal injury
from electrical shocks.
It will also protect the receiver and it's components from being
damaged by accidental shorts of th e cir cuitry that may be
inadvertently introduced during the service operation.
If any fuse (or Fusible Resistor) in this TV receiver is blown,
replace it with the specified.
When replacing a high wattage resistor (Oxide Metal Film Resistor,
over 1 W), keep the resistor 10 mm away from PCB.
Keep wires away from high voltage or high temperature parts.
Before returning the receiver to the customer,
always perform an AC leakage current check on the exposed
metallic parts of the cabinet, such as antennas, terminals, etc., to
be sure the set is safe to operate without damage of electrical
shock.
Leakage Current Cold Check(Antenna Cold Check)
With the instrument AC plug removed from AC source, connect an
electrical jumper across the two AC plug prongs. Place the AC
switch in the on position, connect one lead of ohm-meter to the AC
plug prongs tied together and touch other ohm-meter lead in turn to
each exposed metallic parts such as antenna terminals, phone
jacks, etc.
If the exposed metallic part has a return path to the chassis, the
measured resistance should be between 1 MΩ and 5.2 MΩ.
When the exposed metal has no return path to the chassis the
reading must be infinite.
An other abnormality exists that must be corrected before the
receiver is returned to the customer.
Leakage Current Hot Check(See below Figure)
Plug the AC cord directly into the AC outlet.
Do not use a line Isolation Transformer during this check.
Connect 1.5 K / 10 watt resistor in parallel with a 0.15 uF capacitor
between a known good earth ground (Water Pipe, Conduit, etc.)
and the exposed metallic parts.
Measure the AC voltage across the resistor using AC voltmeter
with 1000 ohms/volt or more sensitivity.
Reverse plug the AC cord into the AC outlet and repeat AC voltage
measurements for each exp ose d metallic par t. Any voltage
measured must not exceed 0.75 volt RMS which is corresponds to
0.5 mA.
In case any measurement is out of the limits specified, there is
possibility of shock hazard and the set must be checked and
repaired before it is returned to the customer.
This spec sheet is applied all of the LCD TV with LT21A/B/C
chassis
2. Designation
(1) Th e adju stment is ac cordi ng to the order which is
designated and which must be followed, according to the
plan whic al Unit: Product Specification Standard.
(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 ºC±5
Relative humidity : 65 ± 10%
Input voltage : 220V, 60Hz
The receiver must be operated for about 5 minutes prior to
the adjustment when module is in the circumstance of over
15°C.
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,.
(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 "Copying files from memory"
(4) Updating is staring.
* After downloading, have to adjust Tool
Option again.
(1) Push "IN-START" key in service remote controller.
(2) Select "Tool Option 1" and Push "OK" button.
(3) Punch in the number. (Each model has their number.)
(4) Completed selecting Tool option.
ModelModule
47LM5800-DBLGD10325259499132245122
42LM5800-DBLGD10225259499132247170
32LM5800-DBLGD100352939499132245154
55LM4600-DBLGD8925259499132245122
47LM4600-DBLGD8725259499132245122
42LM3400-DBLGD25259499132245154
32LM3400-DBLGD25259499132245154
32LS5600-DALGD340352939499132245154
47LS4600-DALGD32725259499132245122
42LS4600-DALGD32625259499132245122
32LS4600-DALGD32425259499132245154
32LS3500-DALGD292494949913224736
32LS3500-DAAUO4388494949913224736
42LS3400-DALGD494949913224736
32LS3400-DALGD494949913224736
42CS560-DAAUO4134494924313224736
42CS560-DALGD38494924313224704
32CS560-DALGD36494924313224737
42CS460-DALGD22494924313224704
42CS460-DAAUO4118494924313224736
32CS460-DALGD20494924313224736
Tool
option1
Tool
option2
Tool
option3
Tool
option4
Tool
option5
(5) After updating is complete, The TV will restart automatically.
(6) If TV turns on, check your updated version and Tool option.
(refer to the next page about tool option)
* If downloading version is higher than your TV have, TV
can lost all channel data. In thi s case, you have to
channel recover. If all channel data is cleared, you didn't
have a DTV/ATV test on production line.
■ Enter Internal ADC mode by pushing “►” key at “6. ADC
Calibration”
3.2. Function Check
3.2.1. Check display and sound
■ Check Input and Signal items. (cf. work instructions)
(1) TV
(2) AV (CVBS)
(3) COMPONENT (480i)
(4) RGB (PC : 1024 x 768 @ 60hz)
(5) HDMI
(6) PC Audio In
* Display and Sound check is executed by Remote controller.
3.2.2. MAC Address
3.2.2.1. Equipment & Condition
▪ Play file: Serial.exe
▪ MAC Address edit
▪ Input Start / End MAC address
=> Caution : Using ‘power on’ button of the Adjustment R/C,
power on TV.
※ ADC Calibration Protocol (RS232C/USB)
NOItemCMD 1 CMD 2 Data 0
Enter
Adjust MODE
ADC adjustADC
※ Adjust Sequence
▪ aa 00 00 [Enter Adjust Mode]
▪ xb 00 40 [Component1 Input (480i)]
▪ ad 00 10 [Adjust 480i Comp1]
▪ xb 00 60 [RGB Input (1024*768)]
▪ ad 00 10 [Adjust 1024*768 RGB]
▪ aa 00 90 End Adjust mode
* Required equipment : Adjustment R/C.
Adjust
‘Mode In’
Adjust
AA00When transfer the
‘Mode In’,
Carry the command.
AD10Automatically adjust-
ment
(The use of a internal pattern)
3.2.2.2 Download method
3.2.2.2.1. Communication Prot connection
Connect:
Connection : PCBA (USB Port) -> USB to Se rial Ad apter
▪ Each other connection to LAN Port of IP Hub and Jig
3.2.3.2. LAN inspection solution
▪ LAN Port connection with PCB
▪ Network setting at MENU Mode of TV
▪ setting automatic IP
▪ Setting state confirmation
▪ If automatic setting is finished, you confirm IP and MAC
Address.
3.2.5. Model name & Serial number Download
3.2.5.1. Model name & Serial number D/L
■ Press “Power on” key of service remocon.(Baud rate :
115200 bps)
■ Connect RS232C/USB cable to Side USB Jack.
■ Write Serial number by use RS-232C to Side USB.
■ Must check the serial number at Instart menu.
3.2.5.2. 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
※ Manual Download (Model Name and Serial Number)
If the TV se t is dow nload ed By OTA or Ser vice man,
Sometimes model name or serial number is initialized.
(Not always) It is impossible to download by bar code scan, so
It need Manual download.
▪ Press the ‘instart’ key of ADJ remote controller.
▪ Go to the menu ‘6.Model Number D/L’ like below photo.
▪ Input the Factory model name(ex 42LD450-TA) or Serial
number like photo
3.2.4. LAN PORT INSPECTION(PING TEST)
3.2.4.1. 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
3.2.4.2. 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 confirm OK Message.
4) Remove LAN CABLE
▪ Check the model name Instart menu -> Facto ry nam e
displayed (ex 42LE7500-TA)
▪ Check the Diagnostics (DTV country only) -> Buyer model
displayed (ex 42LE7500-TA)
=> Caution : Not to push the INSTOP KEY after completion if
(1) Adjust in the place where the influx of light like floodlight
around is blocked. (Illumination is less than 10ux).
(2) Adhere closely the Color Analyzer ( CA210 ) to the module
less than 10cm distance, keep it with the surface of the
Module and Color Analyzer’s Prove vertically.(80~100°).
(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 ‘full white pattern’ or the others, check
the back light on.
● Auto adjustment Map(RS-232C)
RS-232C COMMAND
[ CMD ID DATA ]
Wb 00 00 White Balance Start
Wb 00 ff White Balance End
RS-232C COMMAND
[CMD ID DATA]
CoolMidWarmCoolMidWarm
R GainjgJajd00172192192192
G GainjhJbje00172192192192
B GainjiJcjf00192192172192
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 adjusts Remote control.
■After enter Service Mode by pushing “ADJ” key,
■Enter White Balance by pushing “►” key at “7. 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 POWER-ON -> Enter
the mode of White-Balance, the pattern will come out.
Only for training and service purposes
※ After You finish all adjustments, Press “In-start” button 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”.