LG 50PG60UD-DA (CHASSIS:PT81A) Service Manual ▷ View online
- 5 -
V
Module Specification2
Market
Broadcasting system
Receiving system
MNT Out (1EA)
Video Input (2EA)
S-Video Input(1EA)
Component Input(2EA)
RGB Input(1EA)
HDMI Input(2EA)
Audio Input (6EA)
1
2
3
4
5
6
7
8
9
10
No
Item
Specification
Remark
Taiwan
Analog : NTSC-M, DTV : DVB-T
1) VHF : 2~13
2) UHF : 14-69
3) CATV : 1, 14~125
4) DTV : 14~69
NTSC
NTSC
NTSC
Y/Cb/Cr, Y/Pb/Pr
RGB-PC
HDMI-DTV & SOUND
PC Audio, Component, AV
Rear : 1
Rear : 1, Side : 1
Side : 1
60Hz Only
60Hz Only
60Hz Only
L./R Input
- 6 -
ADJUSTMENT INSTRUCTION
1. Application Object
These instructions are applied all of the 42” PLASMA TV,
PT81A
PT81A
Chassis.
2. Note
V
The module keeping condition: The normal temperature
condition(more than 15°C)
-> Immediately the line supply.
-> Immediately the line supply.
V
The module keeping condition: 0°C
-> The module must be kept for more than 2 hours at the
normal temperature.
V
The module keeping condition: -20°C
-> The module must be kept for more than 3 hours at the
normal temperature.
V
The case of Gu-mi factory at the winter season.
-> The module must be kept for more than 5 minutes at the
heating zone(40°C~45°C).
(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.
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
(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.
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.
2) OSD display and screen display PATTERN MODE.
- Select “3. Test Pattern” by using
D
/
E
(CH+/-) and
press ENTER(
V
)
- Select “White” by using (
F
/
G
VOL+/-) and press
ENTER(
V
)
* 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 attern, cross hatch
pattern), an after image may be occur in the black
level part of the screen.
pattern), an after image may be occur in the black
level part of the screen.
3. S/W auto download using the USB
Memory stick
(1) Insert the USB memory sick the PCB ASSEMBLY.
(2) Using ‘power on’ button of the control R/C, power on TV.
(3) S/W download process is executed automatically.
(2) Using ‘power on’ button of the control R/C, power on TV.
(3) S/W download process is executed automatically.
4. Auto-control adjustment process
(ADC, model-name, EDID)
V
All adjustment process is executed one time through RS-232C.
V
Command send -> ADC Calibration -> Model name
download -> EDID download.
V
Adjsutment process protocol(RS-232C)
V
Defined model name protocol(RS-232C)
5. Manual model name download
(1) Press ADJ KEY on R/C for model name D/L.
(2) Select “0.Model Option” and press ENTER(
(2) Select “0.Model Option” and press ENTER(
V
).
(3) Select model name by using
D
/
E
(CH+/-)and press
ENTER(
V
).
* The module keeping condition
* Using ‘power on’ button of the control R/C, power on TV.
USB file(EPK) version must be bigger than downloaded
version of main B/D.
USB file(EPK) version must be bigger than downloaded
version of main B/D.
* Using ‘power on’ button off the control R/C, power on TV.
1
2
3
4
5
6
7
8
9
10
Ready
ADC
ADC
Confirmation
ADC
Mode Out
EDID
Download
Check EDID
Status
Download
Mode In
Define model
name
Download
Mode Out
Adjustment
Confirmation
NO
Item
Remark
CMD1 CMD2
Data 0
a
a
a
a
a
a
a
a
a
a
d
d
d
d
e
e
e
e
e
e
0
0
0
9
0~4,9
0~4,9
0
1~9
0
9
0
1
9
9
1
2
0
5
9
9
Ready
ADC start
All=0 ; HDMI1,2,3,4=1,2,3,4 ; RGB=9
All=0 ; HDMI1,2,3,4=1,2,3,4 ; RGB=9
Transmitting adjustment mode In
instruction, operate adjustment command.
Model define index(Data0) are listed at
next table.
EDID data existence check in SET
assembly
a
e
5
1
42PG20D-AA
CMD1
CMD2
Data 0
Remark
42PG20D-DA
52013360
Model Name
Model Option Value
- 7 -
6. Manual ADC Adjustment
V
Adjustment is done using internal ADC, so input signal is
not necessary.
V
Do not connect external input cable.
6-1. Required Equipment
(1) Press ADJ KEY on R/C and enter EZ ADJUST.
(2) Select “1.EDID D/L” by using
(2) Select “1.EDID D/L” by using
D
/
E
(CH+/-) and press
ENTER(
V
).
(3) Select “Start” by using
F
/
G
(VOL+/-) and press ENTER(
V
).
(4) ADC Adjustment is executed automatically.
7. EDID Download
7-1. Required Equipment
(1) Press ADJ KEY on R/C and enter EZ ADJUST.
(2) Select “5.EDID D/L” by using
(2) Select “5.EDID D/L” by using
D
/
E
(CH+/-) and press
ENTER(
V
).
(3) Select “Start” and press ENTER(
V
).
(4) EDID download is executed automatically.
(5) Press EXIT key on R/C.
(5) Press EXIT key on R/C.
7-2. EDID DATA
(1) HDMI1(256bytes)
(2) RGB (128bytes)
-> Detail EDID Options below(
,
,
,
,
)
. Product ID
. Serial No : Conntrolled on producion line.
. Month, Year : Conntrolled on producion line.
. Month, Year : Conntrolled on producion line.
Model Name
Checksum : Changeable by total EDID data.
8. 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
to socket.
(1) If PCMCIA CARD works normally, normal signals display
on screen. But it work abnormally, “No CA module” words
display on screen.
display on screen.
*Do not connect HDMI and RGB cable.
NO SIGNAL or White noise
NO SIGNAL
RF Input
AV / Component / RGB input
42PG20D
42PG20D
40309(9D75)
40310(9D76)
Analog(RGB)
Digital(HDMI)
MODEL
EDID MODEL
Product_ID
FUNCTION
42PG20D
00 00 00 FC 4C 47 54 56 0A 20 20 20 20 20 20 20
MODEL NAME
MODEL NAME(HEX)
* Set up “RF mode” before launching products.
- 8 -
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.1
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 P811, connect
2) Connect + terminal of D.M.M to Va pin of P811, connect
- terminal to GND pin of P811.
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)
(Deviation; ±0.5V)
(2) Vs Adjustment
1) Input signal : RF noise signal.
2) Connect + terminal of D.M.M to Vs pin of P811, connect
2) Connect + terminal of D.M.M to Vs pin of P811, connect
– terminal to GND pin of P811.
3) After turning VR951, voltage of D.M.M adjustment as
same as Va voltage which on label of panel right/top.
(Deviation; ±0.5V)
(Deviation; ±0.5V)
10. Adjustment of White Balance
10-1. Required Equipment
(1) Color Analyzer : CA-1000, CA-100+(CH.10) CA-210(CH.10).
* Please adjust CA-100+/CA-210 by CS-1000 before
measuring.
-> You should use Channel 10 which is Matrix
compensated(White, Red, Green, Blue revised) by CS-
1000 and adjust in accordance with balance adjustment
coordinate.
1000 and adjust in accordance with balance adjustment
coordinate.
W
Color temperature standards according to CSM and Module.
W
Change target luminance and range of the Auto adjustment
W/B equipment.
W
White balance adjustment coordinate and color temperature.
* PC(for communication through RS-232C)
-> UART Baud rate : 115200 bps
Each PCB assembly must be checked by check JIG set.
(Because power PCB Assembly damages to PDP Module,
especially be careful)
(Because power PCB Assembly damages to PDP Module,
especially be careful)
(Fig.1) Connection diagram of power adjustment for measuring
* Press the POWER ON KEY on R/C before Model name download.
Befor adjusting White-balance, the AV ADC should be done.
If ADC status were “NG”, Need to ADC adjustment.
If ADC status were “NG”, Need to ADC adjustment.
PLASMA
Remark
11000K
9300K
6500K
Cool
Normal
Warm
CSM
65
20
Range
Target luminance
0.276
0.283
0.000
0.276±0.002
0.283±0.002
0.000
0.276±0.002
0.283±0.002
0.000
X
y
uv
Cool
CS-1000
CA-100+(CH.10) CA-210(CH.10)
0.285
0.293
0.000
0.285±0.002
0.293±0.002
0.000
0.285±0.002
0.293±0.002
0.000
X
y
uv
Medium
CS-1000
CA-100+(CH.10) CA-210(CH.10)
0.313
0.329
0.003
0.313±0.002
0.329±0.002
0.003
0.313±0.002
0.329±0.002
0.003
X
y
uv
Warm
CS-1000
CA-100+(CH.10) CA-210(CH.10)
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