Text preview for : MT-60PZ90V Service Manual.pdf part of LG MT-60PZ90V Service Manual LG Plasma MT-60PZ90MV MT-60PZ90V Service Manual.pdf
Back to : MT-60PZ90V Service Manual | Home
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html
PLASMA MONITOR
SERVICE MANUAL
CHASSIS : RF-03LA
MODEL : MT-60PZ90M/V
MODEL : MT-60PZ92M/V
MODEL : MZ-60PZ92V
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
INPUT
ON/OFF SELECT VOLUME
CONTENTS
SAFETY PRECAUTIONS ...................................................................................3
DESCRIPTION OF CONTROLS ........................................................................ 4
SPECIFICATIONS .............................................................................................. 8
ADJUSTMENT INSTRUCTIONS ........................................................................9
PRINTED CIRCUIT BOARD ..............................................................................12
BLOCK DIAGRAM .............................................................................................21
EXPLODED VIEW ..............................................................................................22
EXPLODED VIEW PARTS LIST ........................................................................23
REPLACEMENT PARTS LIST...........................................................................24
SCHEMATIC DIAGRAM ........................................................................................
- 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
- Shown is a simplified representation of the Monitor.
- Here shown may be somewhat different from your set.
ON/OFF
INPUT
ON/OFF SELECT VOLUME
Main Power Button
Remote Control Sensor
Power Standby Indicator
INPUT Illuminates red in standby mode,
SELECT VOLUME
Illuminates green when the
VOLUME (F,G) Buttons Monitor is turned on
INPUT SELECT Button Sub power button
R AUDIO L Y PB PR R AUDIO L (MONO)
REMOTE CONTROL ( )R( ) ( )L ( )
RS-232C INPUT DVI INPUT RGB INPUT AUDIO INPUT RGB OUTPUT AUDIO INPUT COMPONENT INPUT S-VIDEO VIDEO AUDIO INPUT AC INPUT
(CONTROL/SERVICE) EXTERNAL SPEAKER
INPUT
RS-232C AUDIO S-VIDEO AUDIO
INPUT AUDIO INPUT INPUT INPUT
DVI INPUT
INPUT
RGB COMPO- VIDEO
RGB INPUT OUTPUT NENT INPUT INPUT
Connection to PC Connection to AV equipment
Note: The connection cables shown above to the right are not included with the Monitor.
A D-sub 15-pin cable and a DVI cable are provided to connect the Monitor to a PC.
- 4 -
RCA Type
R AUDIO L Y PB PR R AUDIO L (MONO)
REMOTE CONTROL ( )R( ) ( )L ( )
RS-232C INPUT DVI INPUT RGB INPUT AUDIO INPUT RGB OUTPUT AUDIO INPUT COMPONENT INPUT S-VIDEO VIDEO AUDIO INPUT AC INPUT
(CONTROL/SERVICE) EXTERNAL SPEAKER
INPUT
1 2 3 4 5 6
Scart Type
REMOTE CONTROL ( )R( ) ( )L ( )
RS-232C INPUT DVI INPUT RGB INPUT AUDIO INPUT RGB OUTPUT AC INPUT
(CONTROL/SERVICE) EXTERNAL SPEAKER
5
AV1
1. RS-232C INPUT(CONTROL/SERVICE) PORT 5. AUDIO / COMPONENT INPUT / S-VIDEO / VIDEO INPUT
Connect to the RS-232C port on a PC. / AUDIO INPUT SOCKETS
2. DVI INPUT / RGB INPUT / AUDIO INPUT SOCKETS EURO SCART SOCKET
Connect the monitor output socket of the PERSONAL
COMPUTER to this socket. Note : The interface board (AP-60EA30/31) is not
equipped on MT/MZ-60PZ90/92 series models. Contact
your dealer for buying this optional item.
RGB OUTPUT SOCKET
You can watch the RGB signal on another monitor, con-
6. POWER CORD SOCKET
nect RGB OUTPUT to another monitor's PC input port.
This Monitor operates on an AC power. The voltage is
indicated on the Specifications page. Never attempt to
3. REMOTE CONTROL
operate the Monitor on DC power.
Connect your wired remote control to the Remote port on
the Monitor.
4. EXTERNAL SPEAKER OUTPUT (8 ohm)
Connect to optional external speaker(s).
* For further information, refer to `Speaker & Speaker
Stand' manual.
- 5 -
- When using the remote control aim it at the remote control sensor of the Monitor.
- There's maybe defect in consecutive operation of remote control in specified brightness according to this monitor fea-
ture.
1. POWER
switches the set on from standby or off to standby.
2. SLEEP
sets the sleep timer.
3. PSM (Picture Status Memory)
POWER recalls your preferred picture setting.
1
SLEEP INPUT SELECT
4. ARC (Aspect Ratio Control)
2 13 changes the picture format.
PSM SSM
3 14 5. PIP
ARC PIP ARC
4 15 switches the sub picture on or off.
PIP TWIN PICTURE
5 16 6. SWAP
SWAP SUB INPUT alternates between main and sub picture.
6 17
MENU MUTE 7. MENU Button
7 18
selects a menu.
8. D / E
VOL OK VOL selects a menu item.
8 F / G (Volume Down/Up)
adjusts the volume.
adjusts menu settings.
OK
displays the current mode.
1 2 3 9. NUMBER BUTTONS
4 5 6
9 10. VCR BUTTONS
7 8 9 control a LG video cassette recorder.
0 11. WIN. SIZE
adjusts the sub picture size.
12. ZOOM-/ZOOM+
POWER STOP P/STILL 13. INPUT SELECT BUTTON
10 selects TV, AV or PC monitor mode.
REW PLAY FF
REC 14. SSM (Sound Status Memory)
19 recalls your preferred sound setting.
WIN.SIZE WIN.POSITION SPLIT ZOOM
11 15. PIP ARC
ZOOM - ZOOM +
20
12 changes the picture format of PIP.
16. TWIN PICTURE
17. SUB INPUT
selects the input mode for the sub picture.
18. MUTE Button
switches the sound on or off.
19. SPLIT ZOOM
enlarge the screen with regular ration.
20. WIN.POSITION
moves the sub picture to D / E or F / G direction.
Installing Batteries