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 LJ21A/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 : 100~220V, 50/60Hz
(6) Adjustment equipments : Color Analyzer (CA-210 or
CA-110), SVC remote controller
(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
(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
32CS460-SALGD327883589243132002592
32CS460-SZLGD327888709243132002560
42CS460-SALGD327908709243132002561
42CS460-SAAUO
32CS560-SALGD
32CS560-SAAUO369003589243132002592
42CS560-SALGD328068709243132002561
42CS560-SAAUO
32LS3400-SALGD
37LS3400-SALGD
42LS3400-SALGD331903589371132002080
32LM3400-SBLGD
37LM3400-SBLGD
42LM3400-SBLGD
22LS3500-SACMI351053589499132002080
32LS3500-SALGD
32LS3500-SAAUO371563589499132002096
32LS4600-SALGD33092351919499132007202
42LS4600-SALGD3309424239499132007170
47LS4600-SALGD3309524239499132007170
50LS4000-SAAUO
47LM4600-SBLGD
55LM4600-SBLGD
42LM5800-SBLGD3287024239499132007170
47LM5800-SBLGD
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.
Only for training and service purposes
* RS-232C Connection Method
Connection : PCBA (USB Port) -> USB to Se ri al Ada pter
(UC-232A) -> RS-232C cable -> PC(RS-232C port)
▪ Product name of USB to Serial Adapter is UC-232A.
※ Caution: LJ21* chassis support only UC-232A driver. ( only
■ Enter Internal ADC mode by pushing “►” key at “6. ADC
Calibration”
=> 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. 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.
※ Caution : Not to push the INSTOP KEY after completion if
the function inspection
4. Total Assembly line process
4.1. Adjustment Preparation
■ W/B Equipment condition
CA210 : CH 9, Test signal : Inner pattern (80IRE) – in case of
CCFL back light
CA210 : CH14, Test signal : Inner pattern (80IRE) – in case of
LED back light
■ Above 5 minutes H/run in the inner pattern. (“power on” key of
■ Edge LED W/B Table in process of time (Only LGD except AUO/
CMI)
LS35/46, LM58 Tool ( LED LCD TV Model )
CA210 : CH 14, Test signal : Inner pattern (80IRE)
▪ Standard color coordinate and temperature using CA-1000 (by
H/R time)
CoolMediumWarm
H/R Time(Min)
10-2280287296307320337
23-5279285295305319335
36-9277284293304317334
410-19276283292303316333
520-35274280290300314330
636-49272277288297312327
750-79271275287295311325
880-119270274286294310324
9Over 120269273285293309323
xyxxyx
269273285293313329
※ 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.
● 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”.
● Auto-control interface and directions
(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.
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 complet ing the function
inspection. And Mechanical Power Switch must be set “ON”.