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Model
50PC5D-ZB 50PC5D1-ZD (CHASSIS:PD73A)
Pages
53
Size
52.32 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / Plasma
File
50pc5d-zb-50pc5d1-zd-chassis-pd73a.pdf
Date

LG 50PC5D-ZB / 50PC5D1-ZD (CHASSIS:PD73A) Service Manual ▷ View online

- 5 -
2. Model General Specification
Market
Broadcasting system
Receiving system
Scart Jack (2EA)
Video Input (1EA)
S-Video Input (1EA)
Component Input (1EA)
RGB Input(1EA)
HDMI Input(2EA)
Audio Input (3EA)
1
2
3
4
5
6
7
8
9
10
No
Item
Specification
Remark
UK, German, Italy, France, Sweden, Finland, Spain
1) PAL-BG
2) PAL-DK
3) PAL-I,I’
4) DVB-T(ID TV)
5) SECAM-L/L’
Analog : Upper Heterodyne
Digital : COFDM
PAL, SECAM
PAL, SECAM, NTSC
PAL, SECAM, NTSC
Y/Cb/Cr, Y/Pb/Pr
RGB-PC
HDMI-DTV & SOUND
PC Audio, Component, AV
4 System : PAL, SECAM, NTSC, PAL60
4 System : PAL, SECAM, NTSC, PAL60
L/R Input
- 6 -
ADJUSTMENT INSTRUCTIONS
1. Application Object
These instructions are applied to all of the 50” PLASMA TV,
PD73A 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 100-240V~,
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.
3. Channel memory Setting Method
: You can set channel memory by R/C for adjustment.
1) Press ADJ key on R/C for adjustment.
2) Press ENTER key on “System Control3”.
3) Press VOL + key on “Channel Recover”.
4. PCMCIA CARD Checking Method
: You must adjust DTV 29 Channel and insert PCMCIA CARD
to socket.
1) If PCMCIA CARD works normally, normal signals display
on screen.
But it works abnormally, “No CA module” words display on
screen.
5. POWER PCB Assy Voltage
Adjustments 
(Va, Vs Voltage adjustments)
5-1. Test Equipment :
D.M.M. 1EA
5-2.Connection Diagram for Measuring
: refer to Fig.1
5-3. 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 P805, connect
- terminal to GND pin of P805.
3) After turning VR901, 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 P805, connect
– terminal to GND pin of P805.
2) After turning VR951, voltage of D.M.M adjustment as
same as Va voltage which on label of panel right/top.
(Deviation; ±0.5V)
If you turn on a still screen more than 20 minutes (Especially
Digital pattern, Cross Hatch Pattern), an afterimage may occur
in the black level part of the screen.
Each PCB assembly must be checked by check JIG set.
(Because power PCB Assembly damages to PDP Module,
especially be careful)
(Fig. 1) Connection diagram of power adjustment for measuring
<50” 6709900020A>
- 7 -
6. EDID (The Extended Display
Identification Data)/ DDC (Display
Data Channel) download
6-1. 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
6-2. Setting of device
6-3. Preparation for Adjustment
1) As above Fig. 2, 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.
6-4. Sequence of Adjustment
- EDID Download
1) Init the data.
2) Load the EDID data.(Open File).
[Analog file] (for RGB)
[Digital file]  (for HDMI)
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.
6) If TV has two HDMI, you must download two times for
each HDMI.
- EDID DATA
1) Analog RGB.
=> Detail EDID Options are below(1, 2, 3, 4, 5)
1. Product ID
2. Serial No :  Controlled on production line
3. Month, Year : Controlled on production line
ex) Week : '03'     =>  '03' 
Year   : '2006' =>  '10'
4. Model Name(Hex): 
5. Checksum  : Changeable by total EDID data
(Fig. 2) Connection Diagram of DDC download
Open File
Open File
Model
Name
XXXX
Product ID
Product ID
EDID table
XXXX
Hex
XX
DEC
XX
XXXXX
Model Name
XXXXX
Hex Data
XXXXX
1
2
3
4
5
- 8 -
2) HDMI.
=> Detail EDID Options are below(a, b, c, d, e)
1. Product ID
2. Serial No :  Controlled on production line
3. Month, Year : Controlled on production line
ex) Week : '03'     =>  '03' 
Year   : '2006' =>  '10'
4. Model Name(Hex): 
5. Checksum  : Changeable by total EDID data
7. ADC Calibration
8. Auto AV(CVBS) Color Balance
8-1. Requirement
V
This AV color balance adjustment should be performed
before white Balance Adjustment.
8-2. Required Equipment
1) Remote controller for adjustment.
2) MSPG-925FS Pattern Generator (Which has Video Signal:
7 Color Bar Pattern shown in Fig. 3).
- Model: 202 / Pattern: 65  EC and FC model use PAL-
BGDHI. (composite signal)
8-3. Method of Auto AV(CVBS) Color Balance
1) Input the Video signal: 7 color Bar signal into AV3.
2) Set the PSM to Dynamic mode in the Picture menu.
3) Press IN-STAR 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.
9. Adjustment of Component
9-1. Requirement
V
This AV color balance adjustment should be performed
before white Balance Adjustment.
9-2. Required Equipment
1) Remote controller for adjustment.
2) MSPG-925FS Pattern Generator (Which has Video Signal:
7 Color Bar Pattern shown in Fig. 4).
- Model: 215 / Pattern: 65  
9-3. Method of Auto Component Color Balance
1) Input the Component 720p/50Hz 7 Color Bar(MSPG-925FS
model:215, pattern:65) signal into Component.
2) Set the PSM to Dynamic mode in the Picture menu.
3) Press IN-STAR 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.
Model
Name
XXXX
Product ID
Product ID
EDID table
XXXX
Hex
XX
DEC
XX
XXXX
Model Name
XXXXX
Hex Data
XXXXX
1
2
3
4
5
5
MSPG925FS
Component
RGB-PC
RF/AV/S-VIDEO
ADC
Model : 3
(1024*768 60Hz)
Pattern : 65
7 Color Bar
Model:215(720P)
Pattern : 65
* 720/50Hz
7 Color Bar
PAL
INPUT SELECT AV3
Model : 202
(PAL-BGDHI)
Pattern : 65
* PAL 7 Color Bar
- System control RS-232 Host should be “PC“ for adjustment.
- Before AV ADC Calibration, execute the “Panel size selection“
(Fig. 4) Color bar Test Pattern
(Fig. 3) Color Balance signal
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