LG 42PC1RR-ZL, 42PC1RR Service Manual

PLASMA TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : MF-056L
MODEL : 42PC1RR
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html
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CONTENTS
SAFETY PRECAUTIONS ....................................................................................3
DESCRIPTION OF CONTROLS..........................................................................4
SPECIFICATIONS..............................................................................................10
ADJUSTMENT INSTRUCTIONS .......................................................................12
TROUBLE SHOOTING GUIDE..........................................................................19
BLOCK DIAGRAM.............................................................................................30
EXPLODED VIEW..............................................................................................32
EXPLODED VIEW PARTS LIST........................................................................33
REPLACEMENT PARTS LIST...........................................................................34
SCHEMATIC DIAGRAM.........................................................................................
PRINTED CIRCUIT DIAGRAM ..............................................................................
- 3 -
SAFETY PRECAUTIONS
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
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 the circuitry that may be inadvertently introduced during the service operation.
If any fuse (or Fusible Resistor) in this monitor is blown, replace it with the specified.
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.
Due to high vacuum and large surface area of picture tube, extreme care should be used in handling the Picture Tube. Do not lift the Picture tube by it's Neck.
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 1MΩ and 5.2MΩ. 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 1.5K/10watt resistor in parallel with a 0.15uF 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 exposed metallic part. Any voltage measured must not exceed 0.75 volt RMS which is corresponds to
0.5mA. 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.
Leakage Current Hot Check circuit
1.5 Kohm/10W
To Instrument's exposed METALLIC PARTS
Good Earth Ground such as WATER PIPE, CONDUIT etc.
AC Volt-meter
IMPORTANT SAFETY NOTICE
0.15uF
- 4 -
DESCRIPTION OF CONTROLS
MODE
INPUT
TV
DVD
VCR
AUDIO
PIP PR -
PIP PR +
SWAP
PIP INPUT
STB
MENU
MUTE
SIZE POSITION INDEX
FAV
SLEEP
I/II
PIP ARC
Q.VIEWLIST
TEXT
OK
VOL PR
MULTIMEDIA
POWER
CABLE
HOLD
REVEAL
?
TIME
MARK
EXIT
LIVE TV
TIME
SHIFT
TIME
SHIFT
POWER
INPUT
MULTIMEDIA
MODE
VCR BUT-
TONS
MARK
LIVE TV
MENU
EXIT
VOL
DD/ EE
(Volume
Up/Down)
PR
DD/ EE
(Programme
Up/Down)
MUTE
TEXT
ARC
I/II
switches the set on from standby or off to standby.
Selects the TV, AV, Component, RGB or HDMI/DVI modes. switches the set on from standby.
Selects the Component, RGB or HDMI/DVI modes. switches the set on from standby.
Selects another device.
Controls a video cassette recorder. These buttons are used for X Studio. For further details, see the ‘X Studio’ section.
Selects the wanted functions.
In AV1, AV2, S-Video2, AV3, AV4, Component, RGB, HDMI/DVI input sources, screen returns to the last TV programme.
Brings up the HOME menu.
Displays on screen menus one by one. Exits the current menu. Memorizes menu changes.
Clears all on-screen displays and returns to TV viewing from any menu.
Increases/decreases sound level.
Select a programme.
Switchs the set on from standby.
Switches the sound on or off.
These buttons are used for teletext. For further details, see the ‘Teletext’ section. Note : In teletext mode, the PIP PR +/-, SWAP and PIP INPUT buttons are used for teletext function.
Changes the picture format.
Selects the language during dual language broad­cast. Selects the sound output.
- 5 -
Installing Batteries
n
Use a remote control 7 meter distance and 30 degree (left/right)within the receiving unit scope.
n
Dispose of used batteries in a recyclebin to preserve environment.
Remote control effective range
PIP PR -
PIP PR +
SWAP
PIP INPUT
MENU
MUTE
SIZE POSITION INDEX
FAV
SLEEP
I/II
PIP ARC
Q.VIEWLIST
TEXT
OK
VOL PR
HOLD
REVEAL
?
TIME
EXIT
VE TV
TIME
SHIFT
TIME
SHIFT
OK
DD/ EE
or
FF/ GG
(TIME SHIFT)
PIP
PIP PR +/-
SWAP
PIP INPUT
SIZE
POSITION
NUMBER buttons
LIST
Q.VIEW
SLEEP
FAV
accepts your selection or displays the current mode.
Adjusts menu settings. Selects menu item.
Switches the sub picture on or off. Selects PIP , POP or DW modes.
Selects a programme for the sub picture.
Alternates between main and sub picture.
Selects the input mode for the sub picture.
Adjusts the sub picture size.
Moves the sub picture to
DD/ EE
or FF/ GGdirection.
Displays the programme table.
Returns to the previously viewed programme.
Sets the sleep timer.
Selects a favourite programme.
Open the battery compart­ment cover on the back side.
Insert two batteries in cor­rect polarity (+ with +, ­with -). Don’t mix old or used batteries with new ones.
Close the cover.
MODE
INPUT
T
V
DVD
V C R
A
U
D
IO
PIP PR -
P IP
P R
+
SWAP
P
I
P
IN
P
U
T
S T B
M
E
N
U
MUTE
TEXT
OK
VOL PR
MULTIMEDIA
POWER
CABLE
MARK
EX
IT
L IV
E T
V
TIME SHIFT
TIME SHIFT
MODE
INPUT
TV
DVD
V C
R
A
U
D
IO
PIP PR -
P IP
P R
+
SWAP
P
IP
IN
P
U
T
S T
B
M
E
N
U
MUTE
TEXT
OK
VOL PR
MULTIMEDIA
POWER
CABLE
MARK
EX
IT
L IV
E
T V
TIME SHIFT
TIME SHIFT
1
2
3
- 6 -
Front Panel Controls
PROGRAMME Buttons
VOLUME Buttons
MENU Button
OK Button
INPUT Button
POWER Button
PR
VOL
OK
MENU
INPUT
Power/Standby Indicator
• illuminates red in standby mode.
• illuminates white when the set is switched on.
PR
VOL
OK
MENU
INPUT
- 7 -
Euro Scart Socket (AV1/AV2)
Connect scart socket input or output from an external device to these jacks.
S-Video Input
Connect S-Video out from an S-VIDEO device.
Audio/Video Input
Connect audio/video output from an external device to these jacks.
Component Input
Connect a component video/audio device to these jacks.
RGB/Audio Input
Connect the monitor output from a PC/DTV to the appropriate input port.
Remote Control Port
RS-232C Input
(CONTROL&SERVICE)Port
Connect the serial port of the control devices
to the RS-232C jack.
HDMI/DVI Input
Connect a HDMI signal to HDMI/DVI. Connect DVI(VIDEO) signal to HDMI/DVI port with DVI to HDMI cable.
Variable Audio Output
Connect an external amplifier or add a sub­woofer to your surround sound system.
Antenna Input
Power Cord Socket
This set operates on an AC power. The volt­age is indicated on the Specifications page. Never attempt to operate the set on DC power.
1
2
3
6
4
5
7
8
9
10
11
VARIABLE
AUDIO OUT
AV IN 4
L/MONO
R
AUDIOAUDIO
VIDEOVIDEO
DVI IN
RS-232C IN
REMOTE
CONTROL IN
RGB IN
AUDIO
(RGB/DVI)
RGB
(PC/DTV)
VIDEO
S-VIDEO
COMPONENT IN
VIDEO
AUDIO
R
AUDIO
(MONO)
R
AV IN 3
R
AV 2
ANTENNA
IN
AV 1
S-VIDEO
HDMI/
(CONTROL
& SERVICE)
AC INPUT
Back Connection Panel
S-VIDEO Input
Connect S-Video out from an S­VIDEO device.
AUDIO Input
Connections are available for lis­tening stereo sound from an external device.
VIDEO Input
Connects the video signal from a video device.
1
9
2
67
3
4
5
10
8
11
- 8 -
ACCESSORIES
Owner’s Manual
Owner’s Manual Batteries
MODE
INPUT
T
V
DVD
VC
R
AU
DI
O
P I
P PR
-
P
I P
P R
+
S
W
A
P
PIP INPU
T
S
TB
M
EN
U
MUTE
SIZE POSITION INDEX
FAV
SLEEP
I/II
PIP ARC
Q.VIEWLIST
TEXT
OK
VOL PR
MULTIMEDIA
POWER
CABLE
HOLD
REVEAL
?
TIME
M AR
K
EXIT
L IV
E TV
TIME SHIFT
TIME SHIFT
Remote Control Power Cord
2-Wall brackets
2-eye-bolts
For 42PC1RR
*
Polishing Cloth
Polish the screen with the cloth
(Option)
2-bolts for stand assembly
This feature is not available
for all models.
- 9 -
STAND INSTALLATION (OPTION)
Figures shown here may be slightly different from your set.
When closing the stand for storage
First remove the screws in the holes (B) on the bottom
of the stand. And then pull two Hooks (D) of the stand
bottom
and fold the stand into the back of the set.
After folding, push two Locks (A) of the stand bottom
outward.
O Place the set with the screen facing down on a cushion or soft cloth as shown in Figures 1.
Before unfolding the stand, please make sure two locks (A) on the bottom of the stand push outward.
O Pull the stand out as shown above in Figures 2 ~ 3.
After unfolding the stand, please insert and tighten the screws in the holes (B) on the bottom of the stand.
O When connecting cables to the set, Do not disengage the lock (C).
This may cause the set to fall, causing serious bodily injury and serious damage to the set.
A
D
A
C
B
B
1
3 4
2
* NOTE
- 10 -
SPECIFICATIONS
NOTE : Specifications and others are subject to change without notice for improvement
.
V Application Range
This spec is applied to the 42” PLASMA TV used MF-056L 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 SBOM.
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
V General Specification
1. Module Specification( 42”XGA MODULE )
Chassis
MF-056L 42PC1RR-ZL EU LG
Model Name Market Brand Remark
42PC1RR-ZL Safety : IEC/EN60065, EMI : EN55013, EMS : EN55020
TEST
EU
Model Appliance
Remark
Market
Display Screen Device
Aspect Ratio
PDP Module
Operating Environment
Storage Environment
Input Voltage
1
2
3
4
5
6
No Item Specification Remark
42” Wide Color Display Module
16:9
PDP42X3,
RGB Closed Type
1)Temp. : 0~40deg
2)Humidity : 0~85%
3)Temp. : -20~60deg
4)Humidity : 0~85%
100-240V~, 50/60Hz
Plasma Display Panel
Film Filter
LGE SPEC.
Maker : SONY/ Sanken
- 11 -
2. Model General Specification
Market
Broadcasting system
Available Channel
Receiving system
Video Input (2EA)
Video Output (1EA)
S-Video Input (2EA)
Component Input (1EA)
RGB Input (1EA)
HDMI Input (1EA)
Audio Input (4EA)
Wired Control (1EA)
Audio variable out (1EA)
1
2
3
4
5
6
7
8
9
10
11
12
13
No Item Specification Remark
EU
PAL-BG/I/DK, NTSC
BAND PAL NTSC
VHF/UHF C1~C69 2~83
CATV S1~S47 1~71
Upper Heterodyne
PAL, SECAM, NTSC
PAL, SECAM, NTSC
PAL, SECAM, NTSC
Y/Cb/Cr, Y/Pb/Pr
RGB-PC,
RGB-DTV
HDMI-PC
HDMI-DTV
PC Audio, Component(1EA), AV (2EA)
SM,MMC,SD,MS Pro,CF,Microdrive
4 System : PAL, SECAM, NTSC, PAL60
4 System : PAL, SECAM, NTSC, PAL60
4 System : PAL, SECAM, NTSC, PAL60
Compatible with DVI
L/R Input
Available for TV Speaker Off
- 12 -
ADJUSTMENT INSTRUCTIONS
1. Application Object
These instructions is applied all of the 42” PLASMA TV,
MF-056L Chassis.
2. Note
(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±5°C 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. (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 PATTERN MODE.
[ Set is activated HEAT-RUN without signal generator in
this mode. [ Single color pattern(RED/BLUE/GREEN) of HEAT-RUN
mode uses to check PANEL.
Caution) If you turn on a still screen more than 20 minutes,
(Especially digital pattern, cross hatch pattern) after image may be occur in the black level part of the screen.
3. Channel memory
3-1. Setting up the LGIDS
1) Install the LGIDS. (idsinst.exe)
2) After installation, restart your PC.
3) Extract [files.zip] to folder [c:\LGIDS\files].
4) Start LGIDS.
3-2. Channel memory Method
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,...) correctly.)
2) Connect RS-232C cable and turn on the power. (If your connection has completed, you can see “Ready”.)
[ If your set is not an end products but only a board, you
have to make your board to Stand-by state (LED_R). And you have to Download in Stand_by power state.
3) Select proper CH_memory file(*.nvm) for each model at [NVRAM Download] $ [Write Batch] Next, select proper binary file(*.bin) including the CH information for each model at [NVRAM File].
File name : H2_CH_Memory_RZ.nvm
4) Click the [Download] button. 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.
5) If you want to check whether the CH information is memorized correctly or not, click the [Verify] button. And then compare NVRAM File(*.bin) with the CH information downloaded.
(Fig. 1)
(Fig. 2)
(1)
(2)
(4)
(3)
(Fig. 3)
- 13 -
4. Sub Program Down Load
4-1. Sub Program Down Load for “Cortez”
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,...) correctly)
2) Connect RS232 cable and turn on the power.(Use the Special Cable For Sub-program) (If your connection has completed, you can see )
3) Select proper ‘Model’ for each model.
4) Select ‘flash file’ for each model.
5) Click the [Download] button. It means the completion of the ROM download if all items show ‘OK’ and Status is changed by ‘PASS’ at the lower right corner of the window.
4-2. Sub Program Down Load for “DVR”
1) Download Setup
- You must change the DVR Download mode by using the
Turbo Sound Key on the remote controller.
2) MDS Program Setup
- Open the MDS Program
(1)
(2)
(3)
You have to select this item.
Click.
Find the file for downloading
DVR
DVR
You can’t remove the power cable while downloading
DVR
(Fig. 4)
- 14 -
5. Auto AV(CVBS) Color Balance
5-1. Requirement
O This AV color balance adjustment should be performed
before White Balance Adjustment.
O
It is very import to use correct adjustment pattern like (Fig.5).
A Within the pattern, color sequence should be aligned :
W-Y-C-G-M-R-BLUE-BLACK. (If color sequence is reversed (Black ->...-> White), reverse the pattern with REV key, when using Master pattern generator like MSPG-925)
A If Minimum Black Level and/or Maximum White Level is
not correct, Do select 100% Color Bar Pattern.
5-2. Required Test Equipment
1) Remote controller for adjustment
2) AV Pattern Generator : 802F Pattern Generator, Master(MSPG-925FA), etc. (Which has PAL Composite Video format output with standard(1.0 Vpp) Vertical 100% Color Bar Pattern as Fig. 5)
5-3. Method of Auto RGB Color Balance
1) Input the PAL Composite Video (Fig.5. 100% Color Bar Pattern) into video input. ( 42PC1RR-ZL : AV3/AV4 )
2) Set the PSM to Dynamic mode in Picture menu.
3) Press INSTART 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.
6. Auto Component Color Balance
6-1. Requirement
O
It is very import to use correct adjustment pattern like (Fig.6).
A Within the pattern, color sequence should be aligned :
W-Y-C-G-M-R-BLUE-BLACK. (If color sequence is reversed (Black ->...-> White), reverse the pattern with REV key, when using Master pattern generator like MSPG-925)
A If Minimum Black Level and/or Maximum White Level is
not correct, Do select 100% Color Bar Pattern.
6-2. Required Test Equipment
1) Remote controller for adjustment.
2) 802F Pattern Generator. ( Which has 720p YpbPr output with Standard(0.7Vpp)Vertical 100% Color Bar Pattern as Fig. 6 )
6-3. Method of Auto RGB Color Balance
1) Input the Component 720p 100% Color Bar signal into Component1 or Component2.
2) Set the PSM to Dynamic mode in Picture menu.
3) Press INSTART 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.
7. Auto RGB Color Balance
7-1. Requirement
O
It is very import to use correct adjustment pattern like (Fig. 7).
A Within the pattern, color sequence should be aligned :
W-Y-C-G-M-R-BLUE-BLACK. (If color sequence is reversed (Black ->...-> White), reverse the pattern with REV key, when using Master pattern generator like MSPG-925)
A If Minimum Black Level and/or Maximum White Level is
not correct, Do select 100% Color Bar Pattern.
7-2. Required Test Equipment
1) Remote controller for adjustment
2) 802F Pattern Generator, Master (MSPG-925FA), etc. ( Which has XGA 60Hz PC Format output with standard(0.7Vpp) 100 % Color Bar Pattern as Fig. 7 )
7-3. Method of Auto RGB Color Balance
1) Input the PC 1024x768 @ 60Hz 100 % Color Bar Pattern into RGB.
2) Set the PSM to Dynamic mode in Picture menu.
3) Press INSTART 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.
(Fig. 5) Auto AV(CVBS) Color Balance Test Pattern
(Fig. 6) Auto Component Color Balance Test Pattern
Turn power off and than turn on.(Main AC Power)
DVR
(Fig. 7) Auto RGB Color Balance Test Pattern
- 15 -
8. Checking DVR Function and HDD
8-1. Time Shift
1) Press ‘OK’ button and check Time Shift is working through Progress bar is on.
2) Press after the time is 0:00:02 on the bar and check previous picture for a few seconds. ( just , is working under 30seconds)
3) Press and check a live picture back.
8-2. Recoding
1) Time setting : (1) Set any time on the MENU for recoding.
(Recoding can’t be done under the Time is not active.
When main power is off , the time will be resetted.)
2) Manual Recoding :
(1)
Set recoding information and check it on the scheduled
list.
3) Instant Recoding. (1) Press the recoding button on remote control and record
a present program for 10 seconds then press the stop button to stop recoding.
(2) After finishing recoding, play the recoded clip on ’the
Recoded TV’.
(Fig. 8) DVR MENU
(Fig. 9) Time Shift Progress bar
(Fig. 10) DVR MENU
(Fig. 11) Scheduled List
(Fig. 12) Xstudio PRO MENU
(Fig. 13) Recoded List
- 16 -
9. POWER PCB Assy Voltage Adjustments (Va, Vs Voltage adjustments)
9-1. Test Equipment : D.M.M. 1EA
9-2. Connection Diagram for Measuring
: refer to Fig.14
9-3. Adjustment Method
(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 P807.
2)
After turning RV 401, voltage of D.M.M adjustment as
same as Vs voltage which on label of panel right/top. (deviation ;
±0.5V)
10. EDID (The Extended Display
Identification Data)/ DDC (Display Data Channel) download
10-1. 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.
10-2. Setting of device
10-3. Preparation for Adjustment
1) As above Fig. 6, Connect the Set, EDID Download Jig, PC & Cable.
2) Turn on the PC & EDID Download Jig. And Execute the S/W : EDID TESTER Ver,2.5.
3) Set up S/W option.
Repeat Number : 5 Device Address : A0 PageByte : 8
4) Power on the Set.
10-4. Sequence of Adjustment
(1) DDC data of Analog-RGB
1) Init the data.
2) Load the EDID data.(Open File).
[Analog
(
RGB)
:
42PC1RR_RGB(3A)0307.ana]
(VGA,XGA) [Digital(HDMI): 42PC1RR_HDMI(1F0C)_0307.div] (XGA)
3) Set the S/W as below.
4) Push the “Write Data & Verify”button. And confirm “Yes”.
5) If the writing is finished, you will see the “OK” message.
(Fig. 14) Connection Diagram of power adjustment for measuring.
(Fig. 15) Connection Diagram of DDC download
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