LG 50PH470U-ZD (CHASSIS:PD32C) Service Manual ▷ View online
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Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in the
Schematic Diagram and Exploded View.
It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent
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 TV receiver is blown,
replace it with the specified.
When replacing a high wattage resistor (Oxide Metal Film Resistor,
over 1 W), keep the resistor 10 mm away from PCB.
Keep wires away from high voltage or high temperature parts.
Before returning the receiver to the customer,
always perform an
AC leakage current check on the exposed
metallic parts of the cabinet, such as antennas, terminals, etc., to
be sure the set is safe to operate without damage of electrical
shock.
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 1 M
Ω and 5.2 MΩ.
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 1.5 K / 10 watt resistor in parallel with a 0.15 uF 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
0.5 mA.
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
IMPORTANT SAFETY NOTICE
To Instrument's
exposed
METALLIC PARTS
Good Earth Ground
such as WATER PIPE,
CONDUIT etc.
AC Volt-meter
SAFETY PRECAUTIONS
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SPECIFICATION
NOTE : Specifications and others are subject to change without notice for improvement.
1. Application range
This spec sheet is applied all of the PDP TV with PD32C chassis.
2. Requirement for Test
Each part is tested as below without special appointment.
(1) Temperature: 25 °C ± 5 °C(77 °F ± 9 °F), CST: 40 °C ± 5 °C
(2) Relative Humidity: 65 % ± 10 %
(3) Power Voltage
: Standard input voltage (AC 100-240 V~, 50/60 Hz)
* Standard Voltage of each products 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 5 minutes prior to the adjustment.
3. Test method
(1) Performance: LGE TV test method followed
(2) Demanded other specification
- Safety : CE, IEC specification
- EMC : CE, IEC
4. Module General Specification
- 50" 3D HD
No
Item
Specification
Remark
1
Display Screen Device
127 cm (50 inch) wide Color Display Module
PDP
2
Aspect Ratio
16:9
3
PDP Module
PDP50T5#####,
RGB Closed (Well) Type, Glass Filter (43%)
Pixel Format: 1024 horiz. By 768 ver.
4
Operating Environment 5) Temp. : 0 ~ 40 deg
6) Humidity : 20 ~ 80%
LGE SPEC
5
Storage Environment
7) Temp. : -20 ~ 60 deg
8) Humidity : 10 ~ 90 %
6
Input Voltage
AC220 ~ 240V, 50/60Hz
Maker LG
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5. Model General Specification
No
Item
Specification
Remark
1
Market
Albania, Austria, Belgium, Bosnia, Bulgaria,
Coratia, Czech, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Ireland, Italy,
Kazakhstan, Latvia, Lithuania, Luxembourg,
Morocco, Netherlands, Norway, Poland, Portugal,
Romania, Russia, Serbia, Slovenia, Spain,
Sweden, Slovakia, Switzerland, Turkey, Ukraine, UK
36 Country
2
Broadcasting system
1) PAL/SECAM BG
2) PAL/SECAM DK
3) PAL I / II
4) SECAM L/L’
5) DVB T / T2
6) DVB C
7) DVB S/S2
EU (PAL Market)
Supporting T2/C/S is for **PH***V(U)
Supporting T/C/S is for **PH***S (R)
& **PH***8
3
Receiving system
Analog : Upper Heterodyne
Digital : COFDM
► DVB-T
- Guard Interval(Bitrate_Mbit/s)
1/4, 1/8, 1/16, 1/32
- Modulation : Code Rate
QPSK : 1/2, 2/3, 3/4, 5/6, 7/8
16-QAM : 1/2, 2/3, 3/4, 5/6, 7/8
64-QAM : 1/2, 2/3, 3/4, 5/6, 7/8
► DVB-C
- Symbolrate :
4.0Msymbols/s to 7.2Msymbols/s
- Modulation :
16QAM, 64-QAM, 128-QAM and 256-QAM
► DVB-S
- symbolrate
DVB-S2 (8PSK / QPSK) : 2 ~ 45Msymbol/s
DVB-S (QPSK) : 2 ~ 45Msymbol/s
- viterbi
DVB-S mode : 1/2, 2/3, 3/4, 5/6, 7/8
DVB-S2 mode : 1 /2, 2/3, 3/4, 3/5, 4/5, 5/6,
8/9, 9/10
4
Scart Jack (1EA)
PAL, SECAM
Scart 1 Jack is Full scart and support
RF-OUT(Analog), MNT-OUT
5
Video Input (1EA)
PAL, SECAM, NTSC
Rear Hybrid Jack Type
6
Component Input (1EA) Y/Cb/Cr, Y/ Pb/Pr
7
HDMI Input (3EA)
HDMI-PC
HDMI-DTV
HDMI-MHL
HDMI1(ARC), HDMI2(DVI) ,
Side HDMI3(MHL)
8
Audio Input (1EA)
Component + AV(Hybrid)
L/R Input
9
SPDIF Out (1 EA)
SPDIF Out
10
USB(3EA-FHD /
2 EA-HD )
For SVC, S/W Download, X-Studio, DivX
11
Ethernet LAN(1EA)
12
PCMCI (1EA)
Common Interface
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ADJUSTMENT INSTRUCTION
1. Application Range
This spec. sheet applies to PD32C chassis applied PDP TV
all models manufactured in TV factory.
2. Specification
(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 °C ± 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 100~240V,
50/60Hz.
(5) The receiver must be operated for about 5 minutes prior to
the adjustment when module is in the circumstance of over
15 °C
- In case of keeping module is in the circumstance of 0°C, it
should be placed in the circumstance of above 15°C for 2
hours
- In case of keeping module is in the circumstance of below
-20 °C, it should be placed in the circumstance of above 15
°C for 3 hours,.
■ After RGB Full White in HEAT-RUN Mode, the receiver must
be operated prior to the adjustment.
■ 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 ( WHITE ) 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), an
after image may be occur in the black level part of
the screen.
3. PCB Assembly adjustment
* Caution : Using ‘power on’ button of the control R/C power on
TV
3.1. Download MAC Address, CI+ Key and
widevine, ESN Key
* The CI+ Key download is need for only PD32A/B/C Models.
* Connect TV SET and PC which download keys Writing
program by RS232C-Cable
(1) Start Program and Click ‘start’ Button to connect TV and
PC.
(2) When download succeed, you can see “OK” on the
screen.
* Each Chassis has it’s own MAC Address. Please be careful
of download.
3.2. DFT Process
* Depend on situation, Step can be changed.
* Condition spec
3.3. Tool OPTION (MANUAL)
(1) Insert Access USB Memory Stick
(2) Press ADJ key on R/C to insert Tool OPTION
(3) On the “ Tool Option ”, Insert Tool Option by a number key
(4) Press the ENTER(■)
(5) Press ENTER(■) again.
(6) Select “OK to Download” by using ◄/►(VOL +/-) and
press ►(VOL +)
Model Name
PH470U
Tool
option 1
42
32820
50
32822
60
N/A
Tool
option 2
42 HD
10258
50 HD
10258
50 FHD
N/A
60 FHD
N/A
Tool option 3
162
Tool option 4
61897
Tool option 5
6341
Tool option 6
1609
Tool option 7
13455
Mode
Volume
Power Off
RF
0
DC On