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website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html
LCD TV
SERVICE MANUAL
CHASSIS : ML-012A
MODEL : RZ-15LA31
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
Nov., 2002
P/NO : 3828VD0131C Printed in Korea
CONTENTS
Contents .................................................................................................. 2
Safety Precautions ..................................................................................3
Servicing Precautions ............................................................................ 4
Description of Controls .......................................................................... 6
Adjustment Instruction ............................................................................9
Troubleshooting .....................................................................................15
Exploded View ...................................................................................... 16
Exploded View Parts List .......................................................................17
Replacement Parts List ........................................................................ 18
SVC. Sheet .................................................................................................
- 2 -
SAFETY PRECAUTIONS
IMPORTANT SAFETY NOTICE
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in
the Schematic Diagram and Replacement Parts List.
It is essential that these special safety parts should be replaced with the same components as recommended in this manual to
prevent X-RADIATION, Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
General Guidance Before returning the receiver to the customer,
An lsolation Transformer should always be used during always perform an AC leakage current check on the exposed
the servicing of a receiver whose chassis is not isolated from metallic parts of the cabinet, such as antennas, terminals, etc.,
the AC power line. Use a transformer of adequate power rating to be sure the set is safe to operate without damage of
as this protects the technician from accidents resulting in electrical shock.
personal injury from electrical shocks.
Leakage Current Cold Check(Antenna Cold Check)
It will also protect the receiver and it's components from being With the instrument AC plug removed from AC source,
damaged by accidental shorts of the circuitary that may be connect an electrical jumper across the two AC plug prongs.
inadvertently introduced during the service operation. Place the AC switch in the on positioin, connect one lead of
ohm-meter to the AC plug prongs tied together and touch other
If any fuse (or Fusible Resistor) in this TV receiver is blown, ohm-meter lead in turn to each exposed metallic parts such as
replace it with the specified. antenna terminals, phone jacks, etc.
If the exposed metallic part has a return path to the chassis, the
When replacing a high wattage resistor (Oxide Metal Film measured resistance should be between 1M and 5.2M.
Resistor, over 1W), keep the resistor 10mm away from PCB. When the exposed metal has no return path to the chassis the
reading must be infinite.
Keep wires away from high voltage or high temperature parts. An other abnormality exists that must be corrected before the
receiver is returned to the customer.
Due to high vacuum and large surface area of picture tube,
extreme care should be used in handling the Picture Tube. Leakage Current Hot Check (See below Figure)
Do not lift the Picture tube by it's Neck. Plug the AC cord directly into the AC outlet.
Do not use a line Isolation Transformer during this check.
X-RAY Radiation Connect 1.5K/10watt resistor in parallel with a 0.15uF capacitor
between a known good earth ground (Water Pipe, Conduit, etc.)
Warning: and the exposed metallic parts.
Measure the AC voltage across the resistor using AC
The source of X-RAY RADIATION in this TV receiver is the voltmeter with 1000 ohms/volt or more sensitivity.
High Voltage Section and the Picture Tube. Reverse plug the AC cord into the AC outlet and repeat AC
For continued X-RAY RADIATION protection, the voltage measurements for each esposed metallic part. Any
replacement tube must be the same type tube as specified in voltage measured must not exceed 0.75 volt RMS which is
the Replacement Parts List. corresponds to 0.5mA.
In case any measurement is out of the limits sepcified, there is
possibility of shock hazard and the set must be checked and
repaired before it is returned to the customer.
To determine the presence of high voltage, use an accurate
high impedance HV meter. Leakage Current Hot Check circuit
Adjust brightness, color, contrast controls to minimum. AC Volt-meter
Measure the high voltage.
The meter reading should indicate
23.5 !1.5KV: 14-19 inch, 26!1.5KV: 19-21 inch,
29.0!1.5KV: 25-29 inch, 30.0 ! 1.5KV: 32 inch
If the meter indication is out of tolerance, immediate service Good Earth Ground
and correction is required to prevent the possibility of such as WATER PIPE,
To Instrument's CONDUIT etc.
premature component failure. 0.15uF
exposed
METALLIC PARTS
1.5 Kohm/10W
- 3 -
SERVICING PRECAUTIONS
CAUTION: Before servicing receivers covered by this service transistors and semicounductor "chip" components. The
manual and its supplements and addenda, read and follow the following techniques should be used to help reduce the
SAFETY PRECAUTIONS on page 3 of this publication. incidence of component damage caused by static by static
NOTE: If unforeseen circumstances create conflict between the electricity.
following servicing precautions and any of the safety 1. Immediately before handling any semiconductor component
precautions on page 3 of this publication, always follow the or semiconductor-equipped assembly, drain off any
safety precautions. Remember: Safety First. electostatic charge on your body by touching a known earth
ground. Alternatively, obtain and wear a commercially
General Servicing Precautions available discharging wrist strap device, which should be
1. Always unplug the receiver AC power cord from the AC removed to prevent potential shock reasons prior to
power source before; applying power to the unit under test.
a. Removing or reinstalling any component, circuit board 2. After removing an electrical assembly equipped with ES
module or any other receiver assembly. devices, place the assembly on a conductive surface such as
b. Disconnecting or reconnecting any receiver electrical plug aluminum foil, to prevent electrostatic charge buildup or
or other electrical connection. exposure of the assembly.
c. Connecting a test substitute in parallel with an electrolytic 3. Use only a grounded-tip soldering iron to solder or unsolder
capacitor in the receiver. ES devices.
CAUTION: A wrong part substitution or incorrect 4. Use only an anti-static type solder removal device. Some
polarity installation of electrolytic capacitors may result solder removal devices not classified as "anti-static" can
in an explosion hazard. generate electrical charges sufficent to demage ES devices.
d. Discharging the picture tube anode. 5. Do not use freon-propelled chemicals. These can generate
2. Test high voltage only by measuring it with an appropriate electrical charges sufficient to damage ES devices.
high voltage meter or other voltage measuring device (DVM, 6. Do not remove a repalcement ES device from its protective
FETVOM, etc) equipped with a suitable high voltage probe. package until immediately before you are ready to install it.
Do not test high voltage by "drawing an arc". (Most replacement ES devices are packaged with leads
3. Discharge the picture tube anode only by (a) first connecting electrically shorted together by conductive foam, aluminum
one end of an insulated clip lead to the degaussing or kine foil or comparable conductive material).
aquadag grounding system shield at the point where the 7. Immediately before removing the protective material from
picture tube socket ground lead is connected, and then (b) the ieads of a replacement ES device, touch the protective
touch the other end of the insulated clip lead to the picture material to the chassis or circuit assembly into which the
tube anode button, using an insulating handle to avoid device will be installed.
personal contact with high voltage. CAUTION:Be sure no power is applied to the chassis or
4. Do not spray chemicals on or near this receiver or any of its circuit, and observe all other safety precautions.
assemblies. 8. Minimize bodily motions when handling unpackaged
5. Unless specified otherwise in this service manual, clean replacement ES devices. (Otherwise harmless motion such
electrical contacts only by applying the following mixture to as the bruching together of your clothes fabric or the lifting
the contacts with a pipe cleaner, cotton-tipped stick or of your foot from a carpeted floor can generate static
comparable nonabrasive applicator; 10% (by volume) electricity sufficient to damage an ES device.)
Acetone and 90% (by volume) isopropyl alcohol (90%-99%
strength) General Soldering Guidelines
CAUTION: This is a flammable mixture. 1. Use a grounded-tip, low-wattage soldering iron and
Unless specified otherwise in this service manual, lubrication appropriate tip size and shape that will maintan tip
of contacts in not required. temperature within the range or 500cF to 600cF.
6. Do not defeat any plug/socket B+ voltage interlocks with 2. Use an appropriate gauge of RMA resin-core solder
which receivers covered by this service manual might be composed of 60 parts tin/40 parts lead.
equipped. 3. Keep the soldering iron tip clean and well tinned.
7. Do not apply AC power to this instrument and/or any of its 4. Thorohly clean the surfaces to be soldered. Use a mall
electrical assemblies unless all solid-state device heat sinks wirebristle (0.5 inch, or 1.25cm) brush with a metal handle.
are correctly installed. Do not use freon-propelled spray-on cleaners.
8. Always connect the test receiver ground lead to the 5. Use the following unsoldering technique
receiver chassis ground before connecting the test receiver a. Allow the soldering iron tip to reach normal temperature.
positive lead. (500cF to 600cF)
Always remove the test receiver ground lead last. b. Heat the component lead until the solder melts.
9. Use with this receiver only the test fixtures specified in this c. Quickly draw the melted solder with an anti-static,
service manual. suction-type solder removal device or with solder braid.
CAUTION: Do not connect the test fixture ground strap to CAUTION: Work quickly to avoid overheating the
any heatsink in this receiver. circuiboard printed foil.
6. Use the following soldering technique.
Electrostatically Sensitive (ES) Devices a. Allow the soldering iron tip to reach a normal
Some semiconductor (solid state) devices can be damaged temperature (500cF to 600cF)
easily by static electricity. Such components commonly are b. First, hold the soldering iron tip and solder the strand
called Electrostatically Sensitive (ES) Devices. Examples of against the component lead until the solder melts.
typical ES devices are integrated circuits and some fieldeffect
- 4 -
c. Qulckly move the soldering iron tip to the junction of the Fuse and Conventional Resistor
component lead and the printed circuit foil, and hold it Removal/Replacement
there only until the solder flows onto and around both the 1. Clip each fuse or resistor lead at top of the circuit board
component lead and the foil. hollow stake.
CAUTION: Work quickly to avoid overheating the circuit 2. Securely crimp the leads of replacement component around
board printed foil. notch at stake top.
d. Closely inspect the solder area and remove any excess 3. Solder the connections.
or splashed solder with a small wire-bristle brush. CAUTION: Maintain original spacing between the replaced
component and adjacent components and the circuit board
IC Remove/Replacement to prevent excessive component temperatures.
Some chassis circuit boards have slotted holes (oblong) through
which the IC leads are inserted and then bent flat against the Circuit Board Foil Repair
circuit foil. When holes are the slotted type, the following Excessive heat applied to the copper foil of any printed circuit
technique should be used to remove and replace the IC. When board will weaken the adhesive that bonds the foil to the circuit
working with boards using the familiar round hole, use the board causing the foil to separate from or "lift-off" the board.
standard technique as outlined in parapraphs 5 and 6 above. The following guidelines and procedures should be followed
whenever this condition is encountered.
Removal
1. Desolder and straighten each IC lead in one operation by At IC Connections
gently prying up on the lead with the soldering iron tip as the To repair a defective copper pattern at IC connections use the
solder melts. following procedure to install a jumper wire on the copper
2. Draw away the melted solder with an anti-static suction- pattern side of the circuit board. (Use this technique only on IC
type solder removal device (or with solder braid) before connections).
removing the IC.
Replacement 1. Carefully remove the damaged copper pattern with a sharp
1. Carefully insert the replacement IC in the circuit boare. knife. (Remove only as much copper as absolutely
2. Carefully bend each IC lead against the circuit foil pad and necessary).
solder it. 2. carefully scratch away the solder resist and acrylic coating
3. Clean the soldered areas with a small wire-bristle brush. (if used) from the end of the remaining copper pattern.
(It is not necessary to reapply acrylic coating to the areas). 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.
"Small-Signal" Discrete Transistor 4. Route the jumper wire along the path of the out-away
Removal/Replacement copper pattern and let it overlap the previously scraped end
1. Remove the defective transistor by clipping its leads as of the good copper pattern. Solder the overlapped area and
close as possible to the component body. clip off any excess jumper wire.
2. Bend into a "U" shape the end of each of three leads
remaining on the circuit board. At Other Connections
3. Bend into a "U" shape the replacement transistor leads. Use the following technique to repair the defective copper
4. Connect the replacement transistor leads to the pattern at connections other than IC Pins. This technique
corresponding leads extending from the circuit board and involoves the installation of a jumper wire on the component
crimp the "U" with long nose pliers to insure metal to metal side of the circuit board.
contact then solder each connection.
1. Remove the defective copper pattern with a sharp knife.
Power Output, Transistor Device Remove at least 1/4 inch of copper, to ensure that a
Removal/Replacement hazardous condition will not exist if the jumper wire opens.
1. Heat and remove all solder from around the transistor leads. 2. Trace along the copper pattern from both sides of the
2. Remove the heatsink mounting screw (if so equipped). pattern break and locate the nearest component that is
3. Carefully remove the transistor from the heat sink of the directly connected to the affected copper pattern.
circuit board. 3. Connect insulated 20-gauge jumper wire from the lead of
4. Insert new transistor in the circuit board. the nearest component on one side of the pattern break to
5. Solder each transistor lead, and clip off excess lead. the lead of the nearest component on the other side.
6. Replace heatsink. Carefully crimp and solder the connections.
CAUTION: Be sure the insulated jumper wire is dressed so
Diode Removal/Replacement the it does not touch components or sharp edges.
1. Remove defective diode by clipping its leads as close as
possible to diode body.
2. Bend the two remaining leads perpendicula 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.
- 5 -
DESCRIPTION OF CONTROLS
All the functions can be controlled with the remote control handset.
Some functions can also be adjusted with the buttons on the side
panel of the set.
Remote control handset
POWER MUTE
Before you use the remote control handset, please install the bat-
1 10 teries. See the next page.
1 2 3 1. POWER
switches the set on from standby or off to standby.
2 4 5 6
2. NUMBER BUTTONS
7 8 9 switches the set on from standby and selects a programme.
MENU/INDEX TV/AV/PC
3 i 0 11 3. MENU (or INDEX)
selects a menu.
12 selects an index page in the teletext mode (only TELETEXT
PR- PR PR+
models).
VOL VOL
4 OK
4. D / E (Programme Up/Down)
Q.VIEW
LIST/ selects a programme or a menu item.
PR INPUT
13 switches the set on from standby.
5
F / G (Volume Up/Down)
TEXT/MIX SIZE HOLD
adjusts the volume.
adjusts menu settings.
6 12
POSITION TIME REVEAL OK
SLEEP
accepts your selection or displays the current mode.
I/II PIP
7 M 14
PSM SSM 5. Q.VIEW
8 returns to the previously viewed programme.
12
9 6. TELETEXT BUTTONS (option)
These buttons are used for teletext.
For further details, see the `Teletext' section.
7. I/II (option)
selects the language during dual language broadcast.
selects the sound output (option).
8. PSM (Picture Status Memory)
recalls your preferred picture setting.
9. SSM (Sound Status Memory)
recalls your preferred sound setting.
- 6 -
10. MUTE
switches the sound on or off.
11. TV/AV/PC
selects TV, AV or PC monitor mode.
clears the menu from the screen.
switches the set on from standby.
POWER MUTE
12. PIP BUTTONS (option) (PC mode only)
1 10
PIP
switches the sub picture on or off. 1 2 3
PR +/-
selects a programme for the sub picture. 2 4 5 6
INPUT
selects the input mode for the sub picture. 7 8 9
POSITION MENU TV/AV/PC
relocates the sub picture in up/down or left/right direction. 3 0 11
13. LIST 12
PR- PR PR+
displays the programme table.
VOL VOL
4 OK
14. SLEEP LIST/
sets the sleep timer. Q.VIEW PR INPUT
5 13
Note : In teletext mode, the PR+/-, Q.VIEW and LIST buttons are
used for teletext functions.
POSITION
12
Battery installation I/II PIP SLEEP
7 14
The remote control handset is powered by two AAA type batteries. PSM SSM
To load the batteries, turn the remote control handset over and 8
open the battery compartment. Install two batteries as indicated by 12
9
the polarity symbols ( + and - ) marked inside the compartment.
Note : To avoid damage from possible battery leakage, remove the
batteries if you do not plan to use the remote control handset for an
extended period of time.
- 7 -
Side panel
6
PR
5
Back panel
VOL
4
OK
MENU
3 H/P S-VIDEO
AV
TV/AV/PC
2 VIDEO (MONO) L AUDIO R
7
8
ON/OFF
9 10
1
1. MAIN POWER (ON/OFF) 7. POWER/STANDBY INDICATOR (r) r
switches the set on or off. illuminates brightly when the set is in standby
mode.
2. TV/AV/PC dims when the set is switched on.
selects TV, DVD, AV or PC monitor mode.
clears the menu from the screen. 8. REMOTE CONTROL SENSOR
switches the set on from standby.
9. HEADPHONE SOCKET
3. MENU Connect the headphone plug to this socket.
selects a menu.
10. AUDIO/VIDEO IN SOCKETS (AV)
4. OK Connect the audio/video out sockets of exter-
accepts your selection or displays the current nal equipment to these sockets.
mode.
S-VIDEO/AUDIO IN SOCKETS (S-Video)
5. F / G (Volume Up/Down) Connect the video out socket of an S-VIDEO
adjusts the volume. VCR to the S-VIDEO socket.
adjusts menu settings. Connects the audio out sockets of the S-
VIDEO VCR to the audio sockets as in AV.
6. D / E (Programme Up/Down)
selects a programme or a menu item.
switches the set on from standby.
- 8 -
ADJUSTMENT INSTRUCTION
1. Application Object
This instruction is for the application to the LCD TV.
2. Notes
(1) This set uses an adapter, so connect the adapter and the
set correctly before adjustment.
(2) The adjustment must be performed under the correct
sequence.
(3) The adjustment must be performed in the circumstance of
25!5cC of temperature and 65!10% of relative humidity if
there is no specific designation.
(4) The input voltage of the receiver must keep 100~220V,
50/60Hz in adjusting.
(5) The set must be operated for 30 minutes preliminarily
before adjustment if there is no specific designation.
[ `Heat Run' must be performed with the full white signal or TV
noise signal in the internal part of the set.
[ The time for `Heat Run' can be changed owing to production
plan.
3. PC Input Mode Adjustment
3-1. Required Test Equipment
(1) A pattern generator being in proportion to VG819 ; Pattern
of 11 tones
(2) A Service remote control
3-2. Preparation for Adjustment
(1) Perform `Heat Run' for more than 30 minutes in white
pattern.
(2) Connect the signal of pattern generator with LCD TV.
(3) Apply the gray signal of XGA(1024X768) 11 tones by
using VG819.
(4) In VSC mode,adjust the Auto gay from 0 to 1 by using
Vol(+) button.
- 9 -
3-3. Position of Mode Adjustment
Timing of Mode Table * H[dot]/V[line]
Mode VGA-60 VGA-67 VGA-72 VGA-75 VGA-85 SVGA-56 SVGA-60 SVGA-72 SVGA-75
H_Total 800 864 832 840 832 1024 1056 1040 1056
H_Display 640 640 656 640 640 800 800 800 800
H_Blanking 160 224 176 200 192 224 256 240 256
H_Sync 96 64 40 64 56 72 128 120 80
H Polarity NEG. NEG. NEG. NEG. NEG. POS POS POS POS
H_Bp 48 96 120 120 80 128 88 64 160
H_Fp 16 64 16 16 56 24 40 56 16
H-Freq[KHz] 31.469 35.0 37.861 37.5 43.269 35.156 37.879 48.077 46.875
/Clk[MHz] 25.175 30.24 31.5 31.5 36.0 36.0 40.0 50.0 49.5
V_Total 525 525 520 500 509 625 628 666 625
V_Display 480 480 496 480 480 600 600 600 600
V_Blanking 45 45 24 20 29 25 28 66 25
V_Sync 2 3 3 3 3 2 4 6 3
V Polarity NEG NEG NEG NEG NEG POS POS POS POS
V_Bp 33 39 20 16 25 22 23 23 21
V_Fp 10 3 1 1 1 1 1 37 1
Mode SVGA-85 XGA-60 XGA-70 XGA-75 MAC-75 XGA-85 VGA350-70 VGA350-85 VGA400-70 VGA400-85
H_Total 1048 1344 1328 1312 1152 1376 800 832 800 832
H_Display 800 1024 1024 1024 832 1024 640 640 640 640
H_Blanking 248 320 304 288 320 352 160 192 160 192
H_Sync 64 136 136 96 64 96 96 64 96 64
H Polarity POS NEG NEG POS NEG POS POS POG NEG NEG
H_Bp 152 136 144 176 224 208 48 96 48 96
H_Fp 32 160 24 16 32 48 16 32 16 32
H-Freq[KHz] 53.674 48.363 56.476 60.23 49.725 68.677 31.468 37.86 31.46 37.86
/Clk[MHz] 56.25 65.0 75.0 78.75 57.283 84.997 25.17 31.47 25.17 31.5
V_Total 631 806 806 800 667 808 449 445 449 445
V_Display 600 768 768 768 624 768 350 350 400 400
V_Blanking 31 38 38 32 43 40 99 95 49 45
V_Sync 3 6 6 3 3 3 2 3 2 3
V Polarity POS NEG NEG POS NWG POS NEG NEG POS POS
V_Bp 27 29 29 28 39 36 60 60 35 41
V_Fp 1 3 3 1 1 1 37 32 12 1
- 10 -
4. EDID(The Extended Display Identification Data)
EDID Table
00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
00 00 FF FF FF FF FF FF 00 30 E5 D7 3A 01 00 00 00
10 00 0B 01 01 78 1F 17 70 E8 C3 A0 A3 54 4C 97 24
20 14 50 54 BF E8 80 31 59 3B D9 45 59 61 59 71 59
30 81 40 81 80 01 01 10 0E 01 01 01 01 01 01 01 01
40 01 01 01 01 01 01 01 01 F9 15 01 01 01 01 01 01
50 01 01 01 01 01 01 01 01 01 01 64 19 00 40 41 00
60 26 30 18 88 36 00 0E C3 10 00 00 1E 00 00 00 FD
70 00 32 55 1E 46 0D 00 0A 20 20 20 20 20 20 00 C8
5. Option1 data(200PR~A2 ST:1bit,SYS:2bit)
OPTION OPTION
200PR TEXT I/II SV TOP SCART A2 ST SYS 200PR TEXT I/II SV TOP SCART A2 ST SYS
Data Data
0 0 0 0 0 0 0 0 32 0 0 1 0 0 0 0
1 0 0 0 0 0 0 1 33 0 0 1 0 0 0 1
2 0 0 0 0 0 0 2 34 0 0 1 0 0 0 2
3 0 0 0 0 0 0 3 35 0 0 1 0 0 0 3
4 0 0 0 0 0 1 0 36 0 0 1 0 0 1 0
5 0 0 0 0 0 1 1 37 0 0 1 0 0 1 1
6 0 0 0 0 0 1 2 38 0 0 1 0 0 1 2
7 0 0 0 0 0 1 3 39 0 0 1 0 0 1 3
8 0 0 0 0 1 0 0 40 0 0 1 0 1 0 0
9 0 0 0 0 1 0 1 41 0 0 1 0 1 0 1
10 0 0 0 0 1 0 2 42 0 0 1 0 1 0 2
11 0 0 0 0 1 0 3 43 0 0 1 0 1 0 3
12 0 0 0 0 1 1 0 44 0 0 1 0 1 1 0
13 0 0 0 0 1 1 1 45 0 0 1 0 1 1 1
14 0 0 0 0 1 1 2 46 0 0 1 0 1 1 2
15 0 0 0 0 1 1 3 47 0 0 1 0 1 1 3
16 0 0 0 1 0 0 0 48 0 0 1 1 0 0 0
17 0 0 0 1 0 0 1 49 0 0 1 1 0 0 1
18 0 0 0 1 0 0 2 50 0 0 1 1 0 0 2
19 0 0 0 1 0 0 3 51 0 0 1 1 0 0 3
20 0 0 0 1 0 1 0 52 0 0 1 1 0 1 0
21 0 0 0 1 0 1 1 53 0 0 1 1 0 1 1
22 0 0 0 1 0 1 2 54 0 0 1 1 0 1 2
23 0 0 0 1 0 1 3 55 0 0 1 1 0 1 3
24 0 0 0 1 1 0 0 56 0 0 1 1 1 0 0
25 0 0 0 1 1 0 1 57 0 0 1 1 1 0 1
26 0 0 0 1 1 0 2 58 0 0 1 1 1 0 2
27 0 0 0 1 1 0 3 59 0 0 1 1 1 0 3
28 0 0 0 1 1 1 0 60 0 0 1 1 1 1 0
29 0 0 0 1 1 1 1 61 0 0 1 1 1 1 1
30 0 0 0 1 1 1 2 62 0 0 1 1 1 1 2
31 0 0 0 1 1 1 3 63 0 0 1 1 1 1 3
- 11 -
OPTION OPTION
200PR TEXT I/II SV TOP SCART A2 ST SYS 200PR TEXT I/II SV TOP SCART A2 ST SYS
Data Data
64 0 1 0 0 0 0 0 110 0 1 1 0 1 1 2
65 0 1 0 0 0 0 1 111 0 1 1 0 1 1 3
66 0 1 0 0 0 0 2 112 0 1 1 1 0 0 0
67 0 1 0 0 0 0 3 113 0 1 1 1 0 0 1
68 0 1 0 0 0 1 0 114 0 1 1 1 0 0 2
69 0 1 0 0 0 1 1 115 0 1 1 1 0 0 3
70 0 1 0 0 0 1 2 116 0 1 1 1 0 1 0
71 0 1 0 0 0 1 3 117 0 1 1 1 0 1 1
72 0 1 0 0 1 0 0 118 0 1 1 1 0 1 2
73 0 1 0 0 1 0 1 119 0 1 1 1 0 1 3
74 0 1 0 0 1 0 2 120 0 1 1 1 1 0 0
75 0 1 0 0 1 0 3 121 0 1 1 1 1 0 1
76 0 1 0 0 1 1 0 122 0 1 1 1 1 0 2
77 0 1 0 0 1 1 1 123 0 1 1 1 1 0 3
78 0 1 0 0 1 1 2 124 0 1 1 1 1 1 0
79 0 1 0 0 1 1 3 125 0 1 1 1 1 1 1
80 0 1 0 1 0 0 0 126 0 1 1 1 1 1 2
81 0 1 0 1 0 0 1 127 0 1 1 1 1 1 3
82 0 1 0 1 0 0 2 128 1 0 0 0 0 0 0
83 0 1 0 1 0 0 3 129 1 0 0 0 0 0 1
84 0 1 0 1 0 1 0 130 1 0 0 0 0 0 2
85 0 1 0 1 0 1 1 131 1 0 0 0 0 0 3
86 0 1 0 1 0 1 2 132 1 0 0 0 0 1 0
87 0 1 0 1 0 1 3 133 1 0 0 0 0 1 1
88 0 1 0 1 1 0 0 134 1 0 0 0 0 1 2
89 0 1 0 1 1 0 1 135 1 0 0 0 0 1 3
90 0 1 0 1 1 0 2 136 1 0 0 0 1 0 0
91 0 1 0 1 1 0 3 137 1 0 0 0 1 0 1
92 0 1 0 1 1 1 0 138 1 0 0 0 1 0 2
93 0 1 0 1 1 1 1 139 1 0 0 0 1 0 3
94 0 1 0 1 1 1 2 140 1 0 0 0 1 1 0
95 0 1 0 1 1 1 3 141 1 0 0 0 1 1 1
96 0 1 1 0 0 0 0 142 1 0 0 0 1 1 2
97 0 1 1 0 0 0 1 143 1 0 0 0 1 1 3
98 0 1 1 0 0 0 2 144 1 0 0 1 0 0 0
99 0 1 1 0 0 0 3 145 1 0 0 1 0 0 1
100 0 1 1 0 0 1 0 146 1 0 0 1 0 0 2
101 0 1 1 0 0 1 1 147 1 0 0 1 0 0 3
102 0 1 1 0 0 1 2 148 1 0 0 1 0 1 0
103 0 1 1 0 0 1 3 149 1 0 0 1 0 1 1
104 0 1 1 0 1 0 0 150 1 0 0 1 0 1 2
105 0 1 1 0 1 0 1 151 1 0 0 1 0 1 3
106 0 1 1 0 1 0 2 152 1 0 0 1 1 0 0
107 0 1 1 0 1 0 3 153 1 0 0 1 1 0 1
108 0 1 1 0 1 1 0 154 1 0 0 1 1 0 2
109 0 1 1 0 1 1 1 155 1 0 0 1 1 0 3
- 12 -
OPTION OPTION
200PR TEXT I/II SV TOP SCART A2 ST SYS 200PR TEXT I/II SV TOP SCART A2 ST SYS
Data Data
156 1 0 0 1 1 1 0 202 01 1 0 0 1 0 2
157 1 0 0 1 1 1 1 203 1 1 0 0 1 0 3
158 1 0 0 1 1 1 2 204 1 1 0 0 1 1 0
159 1 0 0 1 1 1 3 205 1 1 0 0 1 1 1
160 1 0 1 0 0 0 0 206 1 1 0 0 1 1 2
161 1 0 1 0 0 0 1 207 1 1 0 0 1 1 3
162 1 0 1 0 0 0 2 208 1 1 0 1 0 0 0
163 1 0 1 0 0 0 3 209 1 1 0 1 0 0 1
164 1 0 1 0 0 1 0 210 1 1 0 1 0 0 2
165 1 0 1 0 0 1 1 211 1 1 0 1 0 0 3
166 1 0 1 0 0 1 2 212 1 1 0 1 0 1 0
167 1 0 1 0 0 1 3 213 1 1 0 1 0 1 1
168 1 0 1 0 1 0 0 214 1 1 0 1 0 1 2
169 1 0 1 0 1 0 1 215 1 1 0 1 0 1 3
170 1 0 1 0 1 0 2 216 1 1 0 1 1 0 0
171 1 0 1 0 1 0 3 217 1 1 0 1 1 0 1
172 1 0 1 0 1 1 0 218 1 1 0 1 1 0 2
173 1 0 1 0 1 1 1 219 1 1 0 1 1 0 3
174 1 0 1 0 1 1 2 220 1 1 0 1 1 1 0
175 1 0 1 0 1 1 3 221 1 1 0 1 1 1 1
176 1 0 1 1 0 0 0 222 1 1 0 1 1 1 2
177 1 0 1 1 0 0 1 223 1 1 0 1 1 1 3
178 1 0 1 1 0 0 2 224 1 1 1 0 0 0 0
179 1 0 1 1 0 0 3 225 1 1 1 0 0 0 1
180 1 0 1 1 0 1 0 226 1 1 1 0 0 0 2
181 1 0 1 1 0 1 1 227 1 1 1 0 0 0 3
182 1 0 1 1 0 1 2 228 1 1 1 0 0 1 0
183 1 0 1 1 0 1 3 229 1 1 1 0 0 1 1
184 1 0 1 1 1 0 0 230 1 1 1 0 0 1 2
185 1 0 1 1 1 0 1 231 1 1 1 0 0 1 3
186 1 0 1 1 1 0 2 232 1 1 1 0 1 0 0
187 1 0 1 1 1 0 3 233 1 1 1 0 1 0 1
188 1 0 1 1 1 1 0 234 1 1 1 0 1 0 2
189 1 0 1 1 1 1 1 235 1 1 1 0 1 0 3
190 1 0 1 1 1 1 2 236 1 1 1 0 1 1 0
191 1 0 1 1 1 1 3 237 1 1 1 0 1 1 1
192 1 1 0 0 0 0 0 238 1 1 1 0 1 1 2
193 1 1 0 0 0 0 1 239 1 1 1 0 1 1 3
194 1 1 0 0 0 0 2 240 1 1 1 1 0 0 0
195 1 1 0 0 0 0 3 241 1 1 1 1 0 0 1
196 1 1 0 0 0 1 0 242 1 1 1 1 0 0 2
197 1 1 0 0 0 1 1 243 1 1 1 1 0 0 3
198 1 1 0 0 0 1 2 244 1 1 1 1 0 1 0
199 1 1 0 0 0 1 3 245 1 1 1 1 0 1 1
200 1 1 0 0 1 0 0 246 1 1 1 1 0 1 2
201 1 1 0 0 1 0 1 247 1 1 1 1 0 1 3
- 13 -
OPTION
200PR TEXT I/II SV TOP SCART A2 ST SYS
Data
248 1 1 1 1 1 0 0
249 1 1 1 1 1 0 1
250 1 1 1 1 1 0 2
251 1 1 1 1 1 0 3
252 1 1 1 1 1 1 0
253 1 1 1 1 1 1 1
254 1 1 1 1 1 1 2
255 1 1 1 1 1 1 3
6. Option2 data(ACMS~BBACK:1bit,LANG:3bit)
OPTION
ACMS VOL HIDEV
Data
0 0 0 0
1 0 0 1
2 0 1 0
3 0 1 1
4 1 0 0
5 1 0 1
6 1 1 0
7 1 1 1
7. Option3 data(IIC AFT~CH+AU:1bit)
OPTION
IIC AFT MD SAVE MONO CH+AUS
Data
0 0 0 0 0
1 0 0 0 1
2 0 0 1 0
3 0 0 1 1
4 0 1 0 0
5 0 1 0 1
6 0 1 1 0
7 0 1 1 1
8 1 0 0 0
9 1 0 0 1
10 1 0 1 0
11 1 0 1 1
12 1 1 0 0
13 1 1 0 1
14 1 1 1 0
15 1 1 1 1
- 14 -
TROUBLESHOOTING
1. General Features
No. Symptom Cause Check Point
1 Soft touch doesn't Defective speaker wire 1) Make some space between the speaker wire and
function properly and inverter wire the Soft touch Board by sticking the speaker wire
to the guide hole of the cabinet.
2) Arrange working state of A1. correct working state of
the Shield case.
2 Soft touch doesn't 1) Broken components and 1) Check Soft touch with eyes
function soldering of them Check and repair soldering
2) P2 connector error 2) Check and repair the P2 connector
3 No screen Input error of inverter connector 1) Bend the pin legs of P1 connector -> recheck them
2) Check and repair the IC804,805 SI4925
P502 and Pin 21 connector 1) Check and fix P902 connector
being slipped out 2) Check and fix the components at P902 LCD module
and at main board.
3) Check Pin21.
Cracked components and 1) Check and repair tuner board and main board
soldering at tuner board 2) Solder Q101,102.
4 Dark screen 1) Defective LCD lamp 1) Replace the inverter
2) Defective inverter 2) Replace the LCD lamp
3) Input error of inverter connector 2) Check the connector input.
2. PC Mode
No. Symptom Cause Check Point
5 Screen noise Clock or phase being 1) Resettig is needed according to the video card of each
not able to be adjusted PC
2) Horizontal noise : adjust phase until no horizontal
noise occurres
3) Vertical noise : adjust clock in menu until no vertical
noise occurres
6 Screen position error Screen position error 1) Play the Auto Configure in Menu.
horizontally or vertically 2) Adjust horizontal and vertical position until the screen
displayes normally
7 Color beat noise Soldering D-SUB Jack of JA202 Recheck adn repair JA202,IC202
and IC202.
3. TV and external input
No. Symptom Cause Check Point
8 No sound Defective Reset IC of IC603 1) Check volume and speaker
- Speaker Defective MSP340D of IC601 - Sound comes out only when being inputted into Audio
- Earphone Defective B+(8V,5V) of IC604,605. L/R
2) Check after replacing IC603
3) Replace IC601
4) Check and replace B+ of IC604,605.
9 Video color beat noise Earphone shield case being touched Check the mould of shield and JA203, Replace shield case
Soldering IC301 and IC912 Re-soldering
- 15 -
EXPLODED VIEW
430
400
500
P801
A4
300 121
120
540
541
112
530
420
310
410
560
330
- 16 -
EXPLODED VIEW PARTS LIST
No. PART NO. DESCRIPTION
112 6304FLP006B LCD MODULE,LC151X01-C3P1 LG PHILPS TFT COLOR NON
120 6400VA0017A SPEAKER,T401SX-095K14 LG C&D 8 OHM 1.0/1.5W 81DB
121 4950V00067A METAL,SUPPORTER EGI SPEAKER HOLDER
300 3091V00A15L CABINET ASSEMBLY RZ-15LA31 NON ML012A FLATRON
310 5020V00552F BUTTON,CONTROL ABS, HF-380 7KEY #155
330 5020V00553D BUTTON,POWER NON 1 KEY SET
400 3809V00273S BACK COVER ASSEMBLY RZ-15A31 NON SET
3809V00A72C BACK COVER ASSEMBLY UK
410 4811V00015A BRACKET ASSEMBLY STAND 15LA30 NON .
420 4950V00063B METAL,SUPPORTER SUS HINGE FIXER
430 3581V00033A DOOR ASSY
3141VMNP15A CHASSIS ASSY,MAIN ML012A LGEIS (Italy) LGEES (Spain)
3141VMNP15C CHASSIS ASSY,MAIN ML012A LGEUK (UK)
3141VMNP15D CHASSIS ASSY,MAIN ML012A LGESW (North Europe)
500 3141VMNP15F CHASSIS ASSY,MAIN ML012A Video Lux (Bulgaria)
3141VMNP15H CHASSIS ASSY,MAIN ML012A LGEFS (France) LGEPT (Portugal)
3141VMNP15J CHASSIS ASSY,MAIN ML012A LGEMK (Hungary)
3141VMNP15N CHASSIS ASSY,MAIN ML012A LGEDG (Germany)
530 6871VSMA12A PWB ASSY,CONT
540 6633VA0003K INVERTER ASSEMBLY,12VOLT VOLT ECT ALPS4LAMP
541 4814V00228A SHIELD,CASE LCD 15INCH NON ET INVERTER(400CD)
560 6871VSMA13F PWB◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo