LG MZ-42PM10 Manuel utilisateur
PLASMA MONITOR
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : RF-04GA
MODEL : MZ-42PM10/B/14
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html
- 2 -
CONTENTS
CONTENTS.............................................................................................................2
SAFETY PRECAUTIONS .......................................................................................3
ADJUSTMENT INSTRUCTIONS ............................................................................4
SPECIFICATIONS................................................................................................ 10
ADJUSTMENT INSTRUCTIONS ..........................................................................13
TROUBLE SHOOTING GUIDE.............................................................................15
BLOCK DIAGRAM................................................................................................26
EXPLODED VIEW.................................................................................................28
EXPLODED VIEW PARTS LIST...........................................................................29
REPLACEMENT PARTS LIST..............................................................................30
SCHEMATIC DIAGRAM ...........................................................................................
PRINTED CIRCUIT BOARD .....................................................................................
- 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
DESCRIPTION OF CONTROLS
- 4 -
- 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.
POWERMUTE
PIP INPUT
MULTIMEDIA
EXIT ARC
MENU
VOL OK
123
456
7
PSM
SSM
8 9
0
VOL
SPLIT ZOOM
PIP/DW
SLEEP
SCAN-
SKIP-
WIN. SIZE
SCAN+
PLAY
POSITION
SKIP+
STOP
SWAP
POWER
PAUSE
INPUT SELECT
MULTIMEDIA
Selects the Component, RGB or DVI
modes.
WIN.SIZE
Adjusts the sub picture size.
POWER
switches the set on from standby or
off to standby.
ARC
Changes the picture format.
MENU
Displays on screen menus one by
one.
Exits the current menu.
Memorizes menu changes.
SSM
To select the sound appropriate to
your viewing programme character.
NUMBER buttons
SLEEP
Sets the sleep timer.
PIP/DW
Switches the sub picture on or off.
Selects PIP or DW modes.
DVD BUTTONS
controls a LG DVD player.
SWAP
Alternates between main and sub pic-
ture.
INPUT SELECT
EXIT
Clears all on-screen displays.
PIP INPUT
Selects the input mode for the sub pic-
ture.
MUTE
Switches the sound on or off.
DD/ EE
Selects a menu option.
FF/ GG(Volume Up/Down)
Increases/decreases sound level.
Adjusts menu settings.
OK
accepts your selection or displays the
current mode.
PSM
Adjusts the factory preset picture
according to the room.
SPLIT ZOOM
Enlarge the screen with regular
ration.
POSITION
Moves the sub picture to DD/ EEor FF/ GG
direction.
- 5 -
<Front Panel Controls>
MT/MZ-42/50PM10 series
MT/MZ-42/50PM20 series
ON/OFF
VOL
MENU
INPUT SELECT
ON/OFF
-Shown is a simplified representation of the set.
- Here shown may be somewhat different from your set.
1. Main Power Button
2. Remote Control Sensor
3. Power Standby Indicator
Illuminates red in standby mode, Illuminates green when the
set is turned on
4. INPUT SELECT Button
5. MENU
Displays on screen menus one by one.
Exits the current menu.
Memorizes menu changes.
6. DD/ EE
Selects a menu option.
FF/ GG(Volume Up/Down)
Increases/decreases sound level.
Adjusts menu settings.
1 2 3 4 5 6
1
4
5
6
23
- 6 -
<Back Panel>
RLRL
AC INPUT
AUDIO INPUT
AUDIO INPUT
AUDIO INPUT
VIDEO INPUT
AUDIO INPUT
S-VIDEO
RGB OUTPUTRGB INPUTDVI INPUT
RS-232C INPUT
(CONTROL/SERVICE)
REMOTE
CONTROL
YP
B
P
R
AUDIO (MONO)
COMPONENT INPUT
RL
EXTERNAL SPEAKER
Connection to PC Connection to AV equipment
MZ-42PM10
- 7 -
<Back Panel>
AV1AV1
AC INPUT
AUDIO INPUT RGB OUTPUTRGB INPUTDVI INPUT
RS-232C INPUT
(CONTROL/SERVICE)
REMOTE
CONTROL
RL
EXTERNAL SPEAKER
RCA Type
Scart Type
5
R
R
L
LRL
EXTERNAL SPEAKER
AC INPUT
AUDIO INPUT
AUDIO INPUT
AUDIO INPUT
VIDEO INPUT
AUDIO INPUT
S-VIDEO
RGB OUTPUTRGB INPUTDVI INPUT
RS-232C INPUT
(CONTROL/SERVICE)
REMOTE
CONTROL
Y P
B
P
R
AUDIO (MONO)
COMPONENT INPUT
1 2 3 645
1. CONTROL LOCK / REMOTE CONTROL
2. RS-232C INPUT(CONTROL/SERVICE) PORT
Connect to the RS-232C port on a PC.
3. DVI INPUT / AUDIO INPUT / RGB INPUT SOCKETS
Connect the monitor output socket of the PERSONAL COM-
PUTER to this socket.
RGB OUTPUT SOCKET
You can watch the RGB signal on another monitor, connect
RGB OUTPUT to another monitor’s PC input port.
4. EXTERNAL SPEAKER OUTPUT (8 ohm)
Connect to optional external speaker(s).
*For further information, refer to ‘Speaker & Speaker Stand’
manual.
5. AUDIO / COMPONENT INPUT / S-VIDEO / VIDEO INPUT /
AUDIO INPUT SOCKETS
EURO SCART SOCKET
Note: The interface board (AP-42PM10/11) is not equipped
on MT/MZ-42PM10/12X/20 series / MT/MZ-50PM10/20
series models. Contact your dealer for buying this optional
item.
6. POWER CORD SOCKET
This Monitor operates on an AC power. The voltage is indi-
cated on the Specifications page. Never attempt to operate
the Monitor on DC power.
MZ-42PM10
- 8 -
Location and Function of Controls
Location and Function of Controls
<Back Panel>
RLRL
AC INPUT
AUDIO INPUT
AUDIO INPUT
VIDEO INPUT
AUDIO INPUT
S-VIDEO
RGB OUTPUTRGB INPUTDVI INPUT
RS-232C INPUT
(CONTROL/SERVICE)
REMOTE
CONTROL
Y P
B
P
R
(MONO)
COMPONENT INPUT
RL
EXTERNAL SPEAKER
AV2
AV1
Connection to PC Connection to AV equipment
MZ-42PM14
- 9 -
<Back Panel>
RLRL
AC INPUT
AUDIO INPUT
AUDIO INPUT
VIDEO INPUT
AUDIO INPUT
S-VIDEO
RGB OUTPUTRGB INPUTDVI INPUT
RS-232C INPUT
(CONTROL/SERVICE)
REMOTE
CONTROL
Y P
B
P
R
(MONO)
COMPONENT INPUT
RL
EXTERNAL SPEAKER
AV2
AV1
1 2 3 645
1. CONTROL LOCK / REMOTE CONTROL
2. RS-232C INPUT(CONTROL/SERVICE) PORT
Connect to the RS-232C port on a PC.
3. DVI INPUT / AUDIO INPUT / RGB INPUT SOCKETS
Connect the monitor output socket of the PERSONAL COMPUTER to this socket.
RGB OUTPUT SOCKET
You can watch the RGB signal on another monitor, connect RGB OUTPUT to another monitor’s PC input
port.
4. EXTERNAL SPEAKER OUTPUT (8 ohm)
Connect to optional external speaker(s).
* For further information, refer to ‘Speaker & Speaker Stand’ manual.
5. COMPONENT / AUDIO INPUT SOCKETS
S-VIDEO / AUDIO (L/MONO) INPUT SOCKETS
VIDEO / AUDIO (L/MONO) INPUT SOCKETS
EURO SCART SOCKET
Note: If you want to use your external hi-fi stereo system, turn off the internal speakers of the set.
6. POWER CORD SOCKET
This Monitor operates on an AC power. The voltage is indicated on the Specifications page. Never
attempt to operate the Monitor on DC power.
MZ-42PM14
- 10 -
SPECIFICATIONS
NOTE : Specifications and others are subject to change without notice for improvement
.
VApplication Range
This spec is sheet is applide to the 42”,50” PDP TV used RF-04GA chassis.
V Specification
Each part is tested as below without special appointment.
1) Temperature : 25¡5°C (77¡9°F)
2) Relative Humidity: 65¡10%
3) Power Voltage: Standard Input voltage (100V-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
.
VTest and Inspection Method
1) Performance : LGE TV test method followed.
2) Demanded other specification
Safety: CE, IEC specification
EMC : CE, IEC
Remark
Safety : IEC60065
EMI : EN55022
EMS : EN55024
Safety : IEC60065,IE60950
EMI : EN55022
Remark
TEST
Model Name
MZ-42PM10
MZ-42PM12X
MZ-50PM10
MZ-50PM20
MT-42PM10
MT-42PM20
MT-42PM12X
MT-50PM10
MT-50PM20
Market
EU
Non-EU
Market Place
EU
Non-EU
Chassis
RF-04GA
Model Name
MZ-42PM10
MZ-42PM12X
MZ-50PM10
MZ-50PM20
MT-42PM10
MT-42PM20
MT-42PM12X
MT-50PM10
MT-50PM20
Brand
LG
LG
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