DOWNLOAD LG 50PS11-UB (CHASSIS:PU92B) Service Manual ↓ Size: 9.46 MB | Pages: 53 in PDF or view online for FREE

- 5 -

V

No.

1

2

3

4

5

6

7

8

9

10

Item

Receiving System

Available Channel

Input Voltage

Market

Screen Size

Aspect Ratio

Tuning System

Module

Operating Environment

Storage Environment

Specification

ATSC/64 & 256 QAM/NTSC-M

1) VHF : 02 ~ 13

2) UHF : 14 ~ 69

3) DTV : 02 ~ 69

4) CATV : 01 ~ 135

5) CADTV : 01 ~ 135

1) AC 100 ~ 240V  50/60Hz

2) AC 100 ~ 120V  50/60Hz

NORTH AMERICA

42 inch Wide(1024 X 768)

50  inch Wide(1365 X 768)

60  inch Wide(1365 X 768)

50  inch Wide(1920 X 1080)

60 inch Wide(1920 X 1080)

16 : 9

FS

PDP32F2####(852 X 480)

PDP42G2####(1024 X 768)

PDP50G2####(1365 X 768)

PDP50H3####(1920 X 1080)

PDP60H3####(1920 X 1080)

1) Temp : 0 ~ 40deg

2) Humidity : ~80%

1) Temp : -20 ~ 60deg

2) Humidity : 0 ~ 90%

- 6 -

V

No

Item

Min

Typ

Max

Remark

1

Color 

White

X

0.270

0.285

0.300

08.11.20 Xrange change +-0.015

coordinate

Y

0.283

0.293

0.303

- White : 85IRE(216Gray) 100

Red

X

0.635

0.640

Unlimitedness

Window White Pattern 

Y

0.318

0.330

0.345

- R/G/B : 100IRE(255Gray) 100%

Green

X

0.242

0.300

0.305

Window White Pattern

Y

0.595

0.600

Unlimitedness

- Picture: Vivid(Medium )

Blue

X

Unlimitedness

0.150

0.158

- 100% Window

Y

Unlimitedness

0.060

0.070

2

Color coordinate 

-0.020

average

+0.020

- 85IRE 100% Window White Pattern

uniformity

- Picture: Vivid(Medium)

3

Color Temperature      Cool

0.261

0.276

0.291

- White : 85IRE(216Gray) 100% 

0.268

0.283

0.298

Window White Pattern

Medium

0.270

0.285

0.300

- 100% Window 

0.278

0.293

0.308

08.11.20 range change +-0.015

Warm

0.298

0.313

0.328

Warm : ColorGamut => WIDE

0.314

0.329

0.344

4

Brightness uniformity

-10

0

+10

- 85IRE(216Gray) 100% Window White 

Pattern

- Picture: Vivid(Medium)

- 7 -

This spec sheet is applied to all of the PU92B Chassis.

(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

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
15cC
- In case of keeping module is in the circumstance of 0cC,

it should be placed in the circumstance of above 15cC for
2 hours 

- In case of keeping module is in the circumstance of below

-20cC,  it  should  be  placed  in  the  circumstance  of  above
15cC for 3 hours.

1) Press the POWER ON KEY on R/C for adjustment.
2) Press the ADJ KEY on R/C and enter EZ ADJUST.

Select  “4.  WHITE  PATTERN”  by  using 

D

/

E

(CH  +/-)  and

select “White” by using 

F

/

G

(VOL +/-)

-  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 pattern, cross hatch pattern), an after
image  may  be  occur  in  the  black  level  part  of  the
screen.

Caution: Set up “RF mode(noise)” after PCB assembly adjustment.

(1)  Execute  ISP  program  “Mstar  ISP  Utility”  and  then  click

“Config” tab.

(2) Set as below, and then click “Auto Detect” and check “OK”

message  If  display  “Error”,  Check  connect  computer,  jig,
and set.

(3)  Click  “Connect”  tab.  If  display  “Can’t”  ,  Check  connect

computer, jig, and set.

(4)  Click  “Read”  tab,  and  then  load  download  file(XXXX.bin)

by clicking “Read”

(5) Click “Auto” tab and set as below
(6) Click “Run”.
(7) After downloading, check “OK” message.

- 8 -

PC (for communication through RS-232C)     UART Baud rate
: 115200 bps
Command : aa 00 00 (Start factory mode)
Command : ad 00 10 (working Auto ADC)
Command : aa 00 90 (End of Auto ADC Process)

After  enter  Service  Mode  by  pushing  “ADJ”  key,  execute
“ADC Adjust” by pushing “

G

” key at “0. ADC CALIBRATION”. 

(1)  We  confirm  whether  “0xBF(480i)/0xC8(1080i)”  address  of

EEPROM “0xA2” is “0xAA” or not. 

(2)  If  “0xBF(480i)/0xC8(1080i)”  address  of  EEPROM  “0xA2”

isn’t “0xAA”, we adjust once more

(3) We can confirm the ADC values from “0xB9 ~ 0xBE(480i) /

0xC2 ~ (1080i)” addresses in a page “0xA2”

(4)  Manual  ADC  Confirmation  using  Service  Remocon.  After

enter Service Mode by pushing “INSTART” key,

Caution: Each PCB assembly must be checked by check JIG set.

(Because  power  PCB  Assembly  damages  to  PDP
Module, especially be careful)

Caution: Set up “RF mode(noise)” before voltage adjustment.

(Va, Vs voltage Adjustment)

D.M.M 1EA

Refer to Fig.1, Fig 2, Fig 3

1) Connect + terminal of D.M.M. to Vs pin of P811, connect

- terminal to GND pin of P811.

2)  After  turning  VR901,voltage  of  D.M.M  adjustment  as

same  as  Vs  voltage  which  on  label  of  panel  right/top
(deviation; ±0.5V)

(Fig.1)  42/50inch Power PCB Assy Voltage Adjustment

(Fig.1)  42/50inch Power PCB Assy Voltage Adjustment