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42PX4RV/RVA
42PX4RV/RVA-ZA
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PLASMA TV
SERVICE MANUAL
CHASSIS : MF-056A
MODEL : 42PX4RV/RVA
42PX4RV/RVA-ZA
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
TV/AV MENU OK VOL PR
CONTENTS
SAFETY PRECAUTIONS ....................................................................................3
DESCRIPTION OF CONTROLS ..........................................................................4
SPECIFICATIONS ................................................................................................9
ADJUSTMENT INSTRUCTIONS .......................................................................11
TROUBLE SHOOTING GUIDE ..........................................................................15
BLOCK DIAGRAM .............................................................................................24
EXPLODED VIEW ..............................................................................................26
EXPLODED VIEW PARTS LIST ........................................................................27
REPLACEMENT PARTS LIST...........................................................................28
SCHEMATIC DIAGRAM.........................................................................................
PRINTED CIRCUIT BOARD ..................................................................................
- 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 Leakage Current Hot Check (See below Figure)
Plug the AC cord directly into the AC outlet.
An isolation Transformer should always be used during Do not use a line Isolation Transformer during this check.
the servicing of a receiver whose chassis is not isolated from Connect 1.5K/10watt resistor in parallel with a 0.15uF capacitor
the AC power line. Use a transformer of adequate power rating between a known good earth ground (Water Pipe, Conduit, etc.)
as this protects the technician from accidents resulting in and the exposed metallic parts.
personal injury from electrical shocks. Measure the AC voltage across the resistor using AC
voltmeter with 1000 ohms/volt or more sensitivity.
It will also protect the receiver and it's components from being Reverse plug the AC cord into the AC outlet and repeat AC
damaged by accidental shorts of the circuitry that may be voltage measurements for each exposed metallic part. Any
inadvertently introduced during the service operation. voltage measured must not exceed 0.75 volt RMS which is
corresponds to 0.5mA.
If any fuse (or Fusible Resistor) in this monitor is blown, replace In case any measurement is out of the limits specified, there is
it with the specified. possibility of shock hazard and the set must be checked and
repaired before it is returned to the customer.
When replacing a high wattage resistor (Oxide Metal Film
Resistor, over 1W), keep the resistor 10mm away from PCB.
Keep wires away from high voltage or high temperature parts. Leakage Current Hot Check circuit
Due to high vacuum and large surface area of picture tube,
AC Volt-meter
extreme care should be used in handling the Picture Tube.
Do not lift the Picture tube by it's Neck.
Good Earth Ground
such as WATER PIPE,
Leakage Current Cold Check(Antenna Cold Check) To Instrument's CONDUIT etc.
With the instrument AC plug removed from AC source, 0.15uF
exposed
connect an electrical jumper across the two AC plug prongs. METALLIC PARTS
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 1.5 Kohm/10W
antenna terminals, phone jacks, etc.
If the exposed metallic part has a return path to the chassis, the
measured resistance should be between 1M and 5.2M.
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.
- 3 -
DESCRIPTION OF CONTROLS
Remote Control Key Functions
- When using the remote control aim it at the remote control sensor of the set.
- There's maybe a defect in consecutive operation of remote control in specified brightness according to this set feature.
TV/AV POWER
Selects the TV, AV, Component, RGB or switches the set on from standby or off to
HDMI modes. TV/AV MULTIMEDIA standby.
switches the set on from standby. POWER
MULTIMEDIA
MODE DVD
VCR
Selects the Component, RGB or HDMI
TV
Selects another device. MODE
modes.
CABLE
AUDI
O STB switches the set on from standby.
ZOOM - / ZOOM +
ZOOM - ZOOM +
Enlarges or reduces the main picture size. PIP
MU
TE MUTE
SLEEP LIST Switches the sound on or off.
SLEEP TEX
T/
* I/II
Sets the sleep timer. I/II
U
ARC
EXIT
Selects the language during dual lan-
MEN
guage broadcast.
MENU Selects the sound output.
Displays on screen menus one by one.
Exits the current menu. LIST
Memorizes menu changes. OK Displays the programme table.
PIP EXIT
Switches the sub picture on or off. Clears all on-screen displays and returns
Selects PIP or DW modes. PIP
to TV viewing from any menu.
PR UT
INP
PIP PR + /- -
PIP PR + SWAP
PIP
Selects a programme for the sub picture.
SWAP ARC
Alternates between main and sub picture. Changes the picture format.
VOL SSM PSM PR
PIP INPUT
Selects the input mode for the sub picture. OK
SIZE accepts your selection or displays the cur-
Adjusts the sub picture size. rent mode.
POSITION D / E or F / G
Moves the sub picture to D / E or F / G Adjusts menu settings.
direction. Selects menu item.
SSM VOL +/- (Volume Up/Down)
To select the sound appropriate to your FAVOURITE Q.VIEW Increases/decreases sound level.
viewing programme character. PR +/- (Programme Up/Down)
SIZE POSITION INDEX HOLD
Selects a programme.
NUMBER buttons
TIME REVEAL MIX MODE
? M PSM
FAVOURITE Adjusts the factory preset picture accord-
selects a favorite programme. ing to the room.
Q.VIEW
TEXT/
These buttons are used for teletext. * Returns to the previously viewed pro-
gramme.
For further details, see the `Teletext' section.
Note : In teletext mode, the PIP PR +/-,
SWAP and PIP INPUT buttons are used for VCR BUTTONS
teletext function. Controls a LG video cassette recorder.
- 4 -
Location and Function of Controls
7
TV/AV MENU OK VOL PR
8
TV/AV MENU OK VOL PR
2 1 3 4 5 6
1. Power Button 6. D / E (Programme Up/Down)
Switches the set on from standby or off to standby. Selects a programme or a menu item.
Switches the set on from standby.
2. Remote Control Sensor
F / G (Volume Up/Down)
3. TV/AV Button Adjusts the volume.
Selects the TV, AV, Component, RGB or HDMI modes. Adjusts menu settings.
Switches the set on from standby.
7. Power Indicator
4. MENU Illuminates red in standby mode, Illuminates green when the
Displays on screen menus one by one. set is turned on
Exits the current menu.
8. Intelligent Eye
Memorizes menu changes.
Adjusts picture according to the surrounding conditions.
5. OK
Accepts your selection or displays the current mode.
- 5 -
Location and Function of Controls
- Shown is a simplified representation of the set.
- Here shown may be somewhat different from your set.
- This manual explains the features available on the 42PX4RV series / RT-42PX40 series.
AV5
S-VIDEO
VIDEO
9
R AUDIO L/MONO
VIDEO AUDIO
AV1 AC INPUT
L R
HDMI/ COMPONENT AUDIO Antenna
DVI(VIDEO) AUDIO INPUT RGB INPUT
L R
VARIABLE
VARIABLE AV2
AUDIO OUT
REMOTE RS-232C INPUT
CONTROL (CONTROL/SERVICE) AV4
AV3
L R
(MONO)
S-VIDEO VIDEO
AUDIO
1 2 3 4 5 6 7 8
1. HDMI(DVI VIDEO) / AUDIO INPUT / RGB INPUT 5. VARIABLE AUDIO OUTPUT
Connect the monitor output socket of the PERSONAL COM-
PUTER, DVD or STB to this socket. 6. EURO SCART SOCKET
Note: If you want to use RGB/DVI audio, we strongly recom- Connect the euro scart socket of the VCR to these sockets.
mend that you use the cable that has a core, or the EMI Filter Note: If you want to use the EURO scart cable, you have to
core along with separate cable. use the signal shielded Euro scart cable.
2. CONTROL LOCK / REMOTE CONTROL 7. ANTENNA INPUT
3. RS-232C INPUT(CONTROL/SERVICE) PORT 8. POWER CORD SOCKET
Connect to the RS-232C port on a PC. This set operates on an AC power. The voltage is indicated on
the Specifications page. Never attempt to operate the set on
4. COMPONENT INPUT DC power.
Connect DVD video outputs to Y, PB, PR of COMPONENT
INPUT and audio outputs to Audio sockets of AUDIO INPUT. 9. AUDIO/VIDEO INPUT (AV5)
S-VIDEO/AUDIO IN SOCKETS
AUDIO/VIDEO IN SOCKETS (AV4)
Connect the audio/video out sockets of external equipment to
these sockets.
S-VIDEO/AUDIO IN SOCKETS
Connect the S-VIDEO out socket of an VCR to the S-VIDEO
socket.
Connect the audio out sockets of the VCR to the audio sock-
ets as in AV4.
- 6 -
Displayable Monitor Specification
RGB / HDMI mode
Horizontal Vertical
Resolution Frequency(KHz) Frequency(Hz)
31.468 70.09
640x350
37.861 85.08
31.469 70.08
720x400
37.927 85.03
31.469 59.94
35.000 66.66
640x480 37.861 72.80
37.500 75.00
43.269 85.00
31.500 60.00
848x480 37.799 70.00
39.375 75.00
31.500 60.00
852x480 37.799 70.00
39.375 75.00
35.156 56.25
37.879 60.31
800x600 48.077 72.18
46.875 75.00
53.674 85.06
832x624 49.725 74.55
48.363 60.00
56.476 70.06
1024x768
60.023 75.02
68.677 85.00
54.348 60.05
1152x864 63.995 70.01
67.500 75.00
1152x870 68.681 75.06
1280x960 60.023 60.02
1280x1024 63.981 60.02
- 7 -
Accessories
TV/AV MULTIMEDIA
POWER
DVD
TV VCR
MODE
CABLE
STB
AUDIO
ZOOM - ZOOM +
MUTE
PIP
SLEEP LIST
TEXT/ * I/II
ARC
EXIT
MENU
OK
PIP
PR INPUT
- PIP
PIP PR + SWAP
VOL SSM PSM PR
FAVOURITE Q.VIEW
SIZE POSITION INDEX HOLD
TIME REVEAL MIX MODE
? M
LG TV
AS mark
Owner's Manual Remote Control handset 2-Eye Bolts
1.5V
1.5V
Alkaline batteries Power Cord 2-Wall brackets
Joinning the set assembly to the wall to protect the set tumbling
- Secure the set assembly by joinning it to a wall by using the Eye Bolts/Wall brackets.
· After the set must be mounted on a desktop, install the Eye Bolts on the set as
shown.
Insert the 2 Eye Bolts and tighten securely, in the holes on the bracket.
Install the wall brackets on the wall with 2 bolts, (not supplied with the product),
as shown.
Match the height of the Eye Bolts and the wall brackets.
Check to be sure the brackets are tightened securely.
· Secure the set assembly to the wall with strong strings or wound wire cables,
(not supplied with the product), as shown.
Optional Extras
- Optional extras can be changed or modified for quality improvement without any notification new optional extras can be
added.
- Contract your dealer for buying these items.
42
40
40
42
50
Tilt wall mounting bracket Ceiling mounting bracket Video cables Audio cables
- 8 -
SPECIFICATIONS
NOTE : Specifications and others are subject to change without notice for improvement.
V Application Range
This spec is applied to the 42"PDP TV used MF-056A Chassis.
V Specification
Each part is tested as below without special appointment.
1) Temperature : 25±5°C (77±9°F), CST : 40±5
2) Relative Humidity: 65±10%
3) Power Voltage: Standard Input voltage (100-240V~, 50/60Hz)
* Standard Voltage of each product is marked by models.
4) Specification and performance of each parts are followed each drawing and specification by part number in accordance with BOM.
5) The receiver must be operated for about 20 minutes prior to the adjustment.
V Test Method
1) Performance : LGE TV test method followed.
2) Demanded other specification
Safety: CE, IEC specification
EMC : CE, IEC
Model Name Market Remark
42PX4RV-TA Non-EU Safety : IEC60065, EMI : CISPRI3
42PX4RV-ZA EU Safety : IEC/EN60065, EMI : EN55013, EMS : EN55020
V General Specification
1. General Specification
No Item Specification Remark
1 Display Screen Device 42 inch wide Color Display Module PDP
2 Aspect Ratio 16:9
3 PDP Module PDP42V7xxxx
RGB Closed Type, Film Filter
4 Operating Environment 1) Temp : 0~40 deg LGE SPEC
2) Humidity : 0~85%
5 Storage Environment 1) Temp : -20~60 deg
2) Humidity : 0~85%
6 Input Voltage 100-240V~, 50/60Hz Maker : SONY/ Murata/ Sanken
- 9 -
2. Model Specification
2.1. 42PX4RV-TA
No Item Specification Remark
1 Market Non-EU
2 Broadcasting system PAL B/G/I/D/K, NTSC
3 Available Channel BAND PAL NTSC
VHF/UHF C1~C69 2~83
CATV S1~S47 1~71
4 Receiving system Upper Heterodyne
5 Video Input (2EA) PAL, SECAM, NTSC 4 System : PAL, SECAM, NTSC,PAL60
6 Video Output(1EA) PAL, SECAM, NTSC 4 System : PAL, SECAM, NTSC,PAL60
7 S-Video Input(2EA) PAL, SECAM, NTSC 4 System : PAL, SECAM, NTSC,PAL60
8 Component Input(2EA) Y/Cb/Cr, Y/Pb/Pr
9 RGB Input(1EA) RGB-PC
RGB-DTV
10 HDMI Input(1EA) HDMI-PC
HDMI-DTV
11 Audio Input(5EA) PC Audio, Component(2EA), AV(2EA) L/R Input
12 Wired Control
13 Audio variable out
2.2. 42PX4RV-ZA
No Item Specification Remark
1 Market EU
2 Broadcasting system PAL B/G/I/D/K, SECAM L/L'
3 Receiving system Upper Heterodyne
4 Scart Jack(3EA) PAL, SECAM
5 Video input(2EA) PAL, SECAM, NTSC 4 System : PAL, SECAM, NTSC,PAL60
6 S-Video Input(2EA) PAL, SECAM, NTSC 4 System : PAL, SECAM, NTSC,PAL60
7 Component Input(2EA) Y/Cb/Cr, Y/Pb/Pr
8 RGB Input(1EA) RGB-PC
RGB-DTV
9 HDMI Input(1EA) HDMI-PC
HDMI-DTV
10 Audio Input(5EA) PC Audio, Component, AV(2EA) L/R Input
11 Wired Control Discrete IR
- 10 -
ADJUSTMENT INSTRUCTIONS
1. Application Object 3-2. Channel memory Method
These instructions apply to the MF-056A Chassis. 1) Select "PDP" and "Hurricane" on Model dialog. And check
your connection in Communication dialog. (If your
connection is `NG', then set your PORT(COM1,2,3,...)
2. Specification correctly.)
(1) Because this is not a hot chassis, it is not necessary to use 2) Connect RS-232C cable and turn on the power.
an isolation transformer. However, the use of isolation (If your connection has completed, you can see "Ready".)
transformer will help protect test instrument.
(2) Adjustment must be done in the correct order. [ If your set is not an end products but only a board, you
(3) The adjustment must be performed in the circumstance of have to make your board to Stand-by state (LED_R). And
25±5°C of temperature and 65±10% of relative humidity if you have to Download in Stand_by power state.
there is no specific designation.
(4) The input voltage of the receiver must keep 100-220V,
50/60Hz.
(5) The receiver must be operated for about 15 minutes prior
to the adjustment.
O After RGB Full white HEAT-RUN Mode, the receiver must
be operated prior to adjustment.
O Enter into HEAT-RUN MODE
1) Press the POWER ON KEY on R/C for adjustment.
2) OSD display and screen display 100% full WHITE
PATTERN.
[ Set is activated HEAT-RUN without signal generator in (Fig. 3)
this mode.
[ Single color pattern(RED/BLUE/GREEN) of HEAT-RUN
mode uses to check PANEL. 3) Select proper CH_memory file(*.nvm) for each model at
[NVRAM Download] $ [Write Batch]
Caution) If you turn on a still screen more than 20 minutes Next, select proper binary file(*.bin) including the CH
(Especially digital pattern, cross hatch pattern), after information for each model at [NVRAM File].
image may be occur in the black level part of the 4) Click the [Download] button.
screen. It means the completion of the CH memory download if all
items show `OK' and Status is changed by `PASS' at the
lower right corner of the window.
3. Channel memory 5) If you want to check whether the CH information is
memorized correctly or not, click the [Verify] button.
3-1. Setting up the LGIDS And then compare NVRAM File(*.bin) with the CH
1) Install the LGIDS. (idsinst.exe) information downloaded.
2) After installation, restart your PC.
3) Extract [files.zip] to folder [c:\LGIDS\files].
4) Start LGIDS.
(Fig. 3-1)
3-3 Sub program download
1) Select "PDP" and "Hurricane" on Model dialog. And check
your connection in Communication dialog. (If your
connection is `NG', then set your PORT(COM1,2,3,...)
(Fig. 1) correctly.)
- 11 -
2) Connect RS-232C cable and turn on the power. (Use the 5. EDID (The Extended Display
special Cable For Sub-program) (If your connection has
completed, you can see "Ready") Identification Data)/ DDC (Display
Data Channel) download
5-1. Required Test Equipment
1) Adjusting PC with S/W for writing EDID Data.(S/W : EDID
TESTER Ver.2.5)
2) A Jig for EDID Download
3) Cable : Serial(9Pin or USB) to D-sub 15Pin cable, D-sub
15Pin cable, DVI to HDMI cable
5-2. Setting of device
Each PCB assembly must be checked by check JIG set.
(Because power PCB Assembly damages to PDP Module, (Fig. 5) Connection Diagram of DDC download
especially be careful)
5.3. Preparation for Adjustment
1) As above Fig. 5, Connect the Set, EDID Download Jig, PC
4. POWER PCB Assy Voltage & Cable.
Adjustments (Va, Vs Voltage Adjustments) 2) Turn on the PC & EDID Download Jig. And Execute the
S/W : EDID TESTER Ver,2.5
4-1. Test Equipment : D.M.M. 1EA 3) Set up S/W option
Repeat Number : 5
Device Address : A0
4-2. Adjustment Method PageByte : 8
[P/No 3501V00220A(Sanken PSU) B/D] 4) Power on the Set
(1) Va Adjustment
1) After receiving 100% Full White Pattern, HEAT RUN.
2) Connect + terminal of D.M.M to Va pin of P807, connect
- terminal to GND pin of P807.
3) After turning RV501, voltage of D.M.M adjustment as
same as Va voltage which on label of panel right/top.
(Deviation; ±0.5V)
(2) Vs Adjustment
1) Connect + terminal of D.M.M to Vs pin of P807, connect
terminal to GND pin of P805. 5.4. Sequence of Adjustment
2) After turning RV401, voltage of D.M.M adjustment as
same as Va voltage which on label of panel right/top. (1) DDC data of Analog-RGB
(Deviation; ±0.5V) 1) Init the data
2) Load the EDID data.(Open File)
[Analog-RGB : MF056A_RGB.ANA]
[digital(HDMI) : MF056A_DMI.DVI]
3) Set the S/W as below.
4) Push the "Write Data & Verify"button. And confirm "Yes".
(Fig. 4) Connection diagram of power adjustment for measuring 5) If the writing is finished, you will see the "OK" message.
- 12 -
6. Auto AV(CVBS) Color Balance W Auto adjustment Map(RS-232C)
Type MF-056A : RT-42PX40/ RZ-42PX40
6-1. Required
- This AV color balance adjustment should be performed befor Baud Rate Data bit Stop bit Parity
white Balance Adjustment
115200 8 1 NONE
6-2. Required Equipment Index Cmd1 Cmd2 Data Min Value Max Value
1) Remote controller for adjustment
2) AV Pattern Generator R Gain j a 00(00) 255(FF)
: 802F Pattern Generator, Master(MSPG-925FA), etc G Gain j b 00(00) 255(FF)
(Which has PAL Composite Video format output with Protocol B Gain
standard(1.0 Vpp) Vertical 100% Color Bar Pattern as Fig6) j c 00(00) 255(FF)
Setting
R Offset j d 00(00) 255(FF)
6-3. Method of Auto Color Balance
1) Input the PAL Composite Video (Fig6. 100% Color Bar G Offset j e 00(00) 255(FF)
Pattern) into video input. B Offset j f 00(00) 255(FF)
(42PX4RV-TA : AV1/AV2 Input 50Hz,
42PX4RV-ZA : AV4/AV5 Input)
2) Set the PSM to Standard mode in Picture menu. 7-3. Adjustment of White Balance
3) Press INSTAR key on R/C for adjustment.
4) Press the G(Vol. +) key operate to set, then it becomes O Operate the zero-calibration of the CA-100, then stick
automatically. sensor to PDP module surface when you adjust.
5) Auto-RGB OK means completed adjustment. O For manual adjustment, it is also possible by the following
sequence.
1) Select white pattern of heat-run mode by pressing power
on key on remote control for adjustment then operate heat
run more than 15 minutes.
2) As below Fig.7-1, Supply 216Level (85 IRE) full screen
pattern to Video input.
(42PX4RV-TA : AV1/AV2 INPUT 50Hz,
42PX4RV-ZA : AV4/AV5 INPUT)
3) Press the TV/AV KEY on R/C for converting input mode.
4) Set the PSM to Standard mode in Picture menu.
(Fig. 6) Auto AV(CVBS) Color Balance Test Pattern 5) Enter the White Balance adjustment mode by pressing the
INSTART key twice(White Balance) on R/C.
6) Stick sensor to center of the screen and select each items
(Red/Green/Blue Gain and offset) using D / E(CH +/-) key
7. Adjustment of White Balance on R/C.
7) Adjust Only High Light with R Gain/ B Gain using F / G
7-1. Required Equipment (VOL+/-) key on R/C.
1) Remote controller for adjustment 8) Adjust it until color coordination becomes as below.
2) Color Analyzer (CA-100 or same product) (High Light G Gain : 7A // Low Light R Offset : 7F, G Offset
3) Auto W/B adjustment instrument(only for auto adjustment) 7E, B Offset 80 is Fixed)
4) AV Pattern Generator [MF-056A : 42PX4RV-TA/ZA] - VGA 42"
Bright : High Light : 80 ± 20cd
7-2. Connecting diagram of equipment for Color-Coordinate : High Light : X : 0.285 ± 0.003
measuring (For Auto Adjustment) Y : 0.295 ± 0.003
Color Temperature : 9,300°K ± 500°K
COLOR
ANALYZER 216 Level (85 IRE)
216 Level (85 IRE) TYPE ; CA-100
CVBS
signal
input
M SPG-2 1 0 0 /
M STG- 5 2 0 0
(Fig. 7-1) Pattern for Adjustment of White Balance
RS-232C Serial Communication
9) When adjustment is completed, Exit adjustment mode
(Fig. 7) Connection Diagram of Auto W/B adjustment using EXIT key on R/C
- 13 -
8. Auto Component Color Balance 9. Default Value in Adjustment mode
8-1. Required Test Equipment 9-1. Auto Color Balance (Component/RGB)
1) Remote controller for adjustment
2) 802F Pattern Generator
(Which has 720p Ypbpr output & PC 1024x768 60Hz with Auto Color Balance(HEX)
Standard(0.7Vpp) Vertical 100% Color Bar Pattern as Fig.8)
Auto-RGB G To Set
8-2. Method of Auto Component Color Balance Red Offset1 80
1) Input the Component 720p 100% Color Bar signal into Green Offset1 80
Component1 or Component2.
Blue Offset1 80
2) Set the PSM to Standard mode in Picture menu.
3) Press INSTART key on R/C for adjustment.
Red Offset2 80
4) Press the G(Vol. +) key operate To set, then it becomes Green Offset2 80
automatically. Blue Offset2 80
5) Auto-RGB OK means complete adjustment Red Gain 80
Green Gain 80
Blue Gain 80
Reset G To Set
(Fig. 10) Default Value on OSD
9-2. White Balance
White Balance(Hex)
(Fig. 8) Auto Component Color Balance Test Pattern
Red Gain 80
Red Offset 80
Green Gain 80
9. Auto RGB Color Balance Green Offset 80
9-1. Required Test Equipment Blue Gain 80
1) Remote controller for adjustment Blue Offset 80
2) 802F Pattern Generator, Master (MSPG-925FA), etc. Reset G To Set
(Which has XGA 60Hz PC Format output with standard
(0.7Vpp) horizontal black and white pattern as Fig.10)
(Fig. 10-1) Default Value on OSD
9-2. Method of Auto RGB Color Balance
1) Input the PC 1024x768 60Hz horizontal black and white
pattern into RGB.
2) Set the PSM to Standard mode in Picture menu.
3) Press ADJ key on R/C for adjustment.
4) Press the G(Vol. +) key operate To set, then it becomes
automatically.
5) Auto-RGB OK means completed adjustment.
Level : 0
Level : 255
(Fig. 9) Auto RGB Color Balance Test Pattern
- 14 -
TROUBLE SHOOTING GUIDE
1. Power Board
1-1. The whole flowchart which it follows in voltage output state
Start check
Doesn't the Yes Is it identical No Is the Interface
screen whole come with Power Off signal operated?
out? condition?
Yes Yes
No 1. Check the Power Off 2. Check the Interface
condition. signal condition.
Doesn't the Yes Doesn't the No Doesn't the No Doesn't the
low pressure output St-by 5V signal 5V Monitor signal VSC signal RL-ON
come out? come out? come out? come out?
Yes Yes Yes
No 3. Check the St-by 5V 4. Check the 5V Monitor 5. Check the VSC RL-ON
signal circuit. signal circuit. signal.
No
Doesn't the Yes Doesn't the No Doesn't the Doesn't the
high tension output VSC signal Vs-ON Vs, Va voltage output VSC low pressure
come out? come out? come out? output come out?
Yes Yes Yes
No 7. Check the VSC Vs-ON 8. Check the Vs, Va 6. Check the VSC low
signal voltage output circuit. pressure output
When the When the When the
Does Y, Z B/D Module Y B/D Module Z B/D Module
high tension Yes input connector is remove, No No
input connector is input connector is
output voltage Drop does Power Board hightension removed, does output removed, does output
occur? output voltage Drop voltage drop voltage Drop
occur? occur? occurs?
No
Yes Yes Yes
9. Check the Power 10. Check the Z B/D 11. Check the Y B/D
Manufacture enterprise Board Output high Module output circuit Module output circuit
meaning of a passage tension circuit
- 15 -
1-2. Sony Power Board Structure
T502: Vs Trans
T702: Va Trans
T101: St-by Trans
1 2 3
T103: Low Voltage Trans
- 16 -
1-3. Sanken, LGIT Power Board Structure
T221: Vs Trans
T271: Va Trans
T121: St-by Trans
1 2 3
T201: Low Voltage Trans
- 17 -
2. No Power
(1) Symptom
¯ Does't minute discharge at module.
¯ Non does not come in into the front LED.
(2) Check following
No
Is plug in power cord? Plug in power cord.
Yes
Is the Line Filter and Power No
Connect the Cable.
Board Cable connected?
Yes
Is the Fuse(F101) on No
Replace the Fuse.
Power Board normal?
Yes
Is the Power Board and 7P of No
Connect the Cable.
VSC Board Cable connected?
Yes
After the cable connect is remved
to Power Board(except the CN101
connection cable), the AC voltage
marking is authorized on manual.
When ST-BY 5V is not operated,
replace Power Board.
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3. Protect Mode
(1) Symptom
¯ After once shining, it does not discharge minutely
from module
¯ The Rely falls(The sound is audible "click")
¯ It is converted with the color where the front LED
is red from green.
(2) Check following
No No
Is the Power Board Is output the normality Low/High Replace Power
normal ? voltage except Stand-by 5V? Board.
Yes
No No
Is the each connector After connecting well each connector, Replace the
normal? the normality it operates? connector.
Yes
Is the output voltage
No Yes Yes Replace
Is the Y-Board Is the Fuse(FS2) on Y-B/D normal? normal after remove
normal? (In case of open is replace) P5, P6 connector of Y-Board.
Y-B/D?
Yes
Is the output voltage
No Yes Yes Replace
Is the Z-Board Is the Fuse (FS1, FS2) on Z-B/D normal after remove
normal? normal? (In case of open is replace) P1 connector of Z- Z-Board.
B/D?
Yes
After remove P1, P2, P3 output voltage
No Is the output voltage normal after Yes
Is the X- Board normality: Replace Right X-B/D
remove P1, 2, 3, 4, 5 connector of
normal? After remove P4, P5 output voltage
X-B/D?
normality: Replace Left X-B/D
Yes
No Is the output voltage normal after Yes
Is the Ctrl Board Replace
remove P1, 2, 4, 9, 10 connector of
normal? X-Board.
Ctrl-B/D?
Yes
No Yes
Is the Is the output voltage normal after After remove P1001, 1100 normal
VSC Board normal? remove P1001, P1100? operation: Replace VSC Board
Yes
No After crisis COF of each board, check the normality operates.
Is the COF of X, Y, Z
normal ? If in case normality operates, correspondence COF Fail is
replace the module.
- 19 -
4. No Raster
(1) Symptom
¯ Does't minute discharge at module.
¯ It maintains the condition where the front LED is green.
(2) Check following
No No
Is the Power Board Is output the normality Low/High Replace the
normal? voltage except Stand-by 5V? Power Board.
Yes
No No
Is the each connector After connecting well each connector, Replace the
normal? the normality it operates? connector.
Yes
Is the output voltage
No Yes Yes Replace
Is the Y-Board Is the Fuse(FS2) normal on Y-B/D? normal after remove
normal? (In case of open is replace) P5, P6 connector of Y-Board.
Y-B/D?
Yes
Is normal the output
No Yes Yes Replace
Is the Is the Fuse(FS1, FS2) normal on voltage after remove
Z- Board normal? Z-B/D? (In case of open is replace) P1 connector of Z-Board.
Z-B/D?
Yes
After remove P1, P2, P3 output voltage
No Is the output voltage normal after Yes
Is the normality: Replace Right X-B/D
remove P1, 2, 3, 4, 5 connector of
X- Board normal? After remove P4, P5 output voltage
X-B/D?
normality: Replace the Left X-B/D
Yes
No Is the output voltage normal after Yes
Is the Replace
remove P1, 2, 4, 9, 10 connector of
Ctrl Board normal? X-Board.
Ctrl-B/D?
Yes
No Yes
Is the Is the output voltage normal after After remove P1001, P1100 normal
VSC Board normal? remove P1001, P1100? operation: Replace the VSC Board
Yes
No After crisis COF of each board, check the normality operates.
Is the COF of X, Y, Z
normal? If in case normality operates, correspondence COF Fail is
replace the module.
- 20 -
5. In case of occurring strange screen into specific mode
5-1. In case the OSD does not displayed
(1) Symptom
¯ LED is green
¯ The minute discharged continuously becomes
accomplished from module
(2) Check following
Is the LVDS cable No Is the LVDS cable Yes
Replace the cable.
normal ? connected well?
No
Cable inserts well.
Yes
Is the VSC Board No Does the FIL8532 IC Yes
Replace VSC B/D
normal? (IC800) Operates ?
No
Replace FIL8532
Yes IC(IC800).
Is the Ctrl Board of No
Replace Ctrl B/D.
Module normal?
- 21 -
5-2. In case of does't display the screen into specific mode
(1) Symptom
¯ The screen does not become the display from specific input mode
(RF, AV, Component, RGB, DVI).
(2) Check following
¯ Check the all input mode should become normality display.
¯ Check the Video(Main)/Data(Sub), Video(Main)/Video(Sub) should become
normality display from the PIP mode or DW mode. (Re-Check it Swap)
(3) In case of becomes unusual display from RF mode
No Is the Tuner Cable Yes Is the Input voltage, IIC Communication
Is the Tuner normal?
connected well? and CVBS output normal?
No No
Yes
Cable inserts well. Replace the Tuner
No Is the Input voltage, IIC No
Is the CXA2069Q