DOWNLOAD LG 50PA6500-SA (CHASSIS:PB21A) Service Manual ↓ Size: 11.26 MB | Pages: 48 in PDF or view online for FREE

- 7 -

(PU21A)

* Edid data and Model option download(RS232)

- Manual Download 

■ Write HDMI EDID data

● Using instruments

-  Jig.  (PC  Serial  to  D-Sub  connection)  for  PC,  DDC 

adjustment.

- S/W for DDC recording (EDID data write and read)

- D-sub jack

- Additional HDMI cable connection Jig.

● Preparing and setting.

-  Set instruments and Jig. Like pic.5), then turn on PC 

and Jig. 

- Operate DDC write S/W (EDID write & read)

- It will operate in the DOS mode.

■ EDID data (Model name = LG TV)

 - RGB FHD 

- South Centural America _2D_FHD HDMI  

NO

Enter  

download MODE

EDID data Model

option download

Item

download ‘Mode In’

download

CMD 1

A

A

CMD 2

A

E

Data 0

0

00

0

10

When transfer the  

‘Mode In’,

Carry the command.

Automatically download

(The use of a internal 

pattern)

< For write EDID data, setting Jig and another instruments >

00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01 

01 16 01 03 68 A0 5A 78 0A EE 91 A3 54 4C 99 26 

0F 50 54 A1 08 00 31 40 45 40 61 40 81 80 D1 C0 

01 01 01 01 01 01 1A 36 80 A0 70 38 1F 40 30 20 

25 00 40 84 63 00 00 1A 66 21 50 B0 51 00 1B 30 

40 70 36 00 40 84 63 00 00 1E 00 00 00 FD 00 3A 

3E 1E 53 10 00 0A 20 20 20 20 20 20 00 00 00 FC 
00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 00 ED 

00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01 

01 16 01 03 80 A0 5A 78 0A EE 91 A3 54 4C 99 26 

0F 50 54 A1 08 00 31 40 45 40 61 40 81 80 D1 C0 

01 01 01 01 01 01 1A 36 80 A0 70 38 1F 40 30 20 

25 00 40 84 63 00 00 1A 66 21 50 B0 51 00 1B 30 

40 70 36 00 40 84 63 00 00 1E 00 00 00 FD 00 3A 

3E 1E 53 10 00 0A 20 20 20 20 20 20 00 00 00 FC 

00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 D4 

02 03 27 F1 4F 90 1F 04 13 05 14 03 02 12 20 22 
15 11 16 01 26 15 07 50 09 57 07 67 03 0C 00 10 
00 B8 2D E3 05 03 01 02 3A 80 18 71 38 2D 40 58 
2C 45 00 40 84 63 00 00 1E 01 1D 80 18 71 1C 16 
20 58 2C 25 00 40 84 63 00 00 9E 01 1D 00 72 51 
D0 1E 20 6E 28 55 00 40 84 63 00 00 1E 0E 1F 00 
80 51 00 1E 30 40 80 37 00 40 84 63 00 00 1C 00 
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 4B 

- 8 -

- South Centural America _2D_FHD HDMI 2

- South Centural America _2D_FHD HDMI 3

-  See Working Guide if you want more information about EDID 

communication.

- Adjustment Color Temperature(White balance)

■ Using Instruments

● Color Analyzer: CA-210 (CH 10)

-  Using LCD color temperature, Color Analyzer (CA-

210) must use CH 10, which Matrix compensated 

(White, Red, Green, Blue compensation) with CS-

2100. See the Coordination bellowed one. 

●  Auto-adjustment Equipment (It needs when Auto-adjust-

ment – It is availed communicate with RS-232C : Baud 

rate: 115200) 

●  Video Signal Generator MSPG-925F 720p, 216Gray 

(Model: 217, Pattern 78)

■ Connection Diagram (Auto Adjustment)

● Using Inner Pattern

● Using HDMI input

■ White Balance Adjustment 

If you can’t adjust with inner pattern, then you can adjust 

it using HDMI pattern. You can select option at “Ez-Adjust 

Menu – 7. White Balance” there items “NONE, INNER, 

HDMI”. It is normally setting at inner basically. If you can’t 

adjust using inner pattern you can select HDMI item, and 

you can adjust.

In manual Adjust case, if you press ADJ button of service 

remocon, and enter “Ez-Adjust Menu – 7. White Balance”, 

then automatically inner pattern operates. (In case of 

“Inner” originally “Test-Pattern. On” will be selected in The 

“Test-Pattern. On/Off”. 

● Connect all cables and equipments like Pic.5)

●  Set Baud Rate of RS-232C to 115200. It may set 115200 

orignally.

● Connect RS-232C cable to set

● Connect HDMI cable to set

< connection Diagram for Adjustment White balance >

00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01 

01 16 01 03 80 A0 5A 78 0A EE 91 A3 54 4C 99 26 

0F 50 54 A1 08 00 31 40 45 40 61 40 81 80 D1 C0 

01 01 01 01 01 01 1A 36 80 A0 70 38 1F 40 30 20 

25 00 40 84 63 00 00 1A 66 21 50 B0 51 00 1B 30 

40 70 36 00 40 84 63 00 00 1E 00 00 00 FD 00 3A 

3E 1E 53 10 00 0A 20 20 20 20 20 20 00 00 00 FC 

00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 D4 

02 03 27 F1 4F 90 1F 04 13 05 14 03 02 12 20 22 
15 11 16 01 26 15 07 50 09 57 07 67 03 0C 00 20 
00 B8 2D E3 05 03 01 02 3A 80 18 71 38 2D 40 58 
2C 45 00 40 84 63 00 00 1E 01 1D 80 18 71 1C 16 
20 58 2C 25 00 40 84 63 00 00 9E 01 1D 00 72 51 
D0 1E 20 6E 28 55 00 40 84 63 00 00 1E 0E 1F 00 
80 51 00 1E 30 40 80 37 00 40 84 63 00 00 1C 00 
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 3B 

00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01 

01 16 01 03 80 A0 5A 78 0A EE 91 A3 54 4C 99 26 

0F 50 54 A1 08 00 31 40 45 40 61 40 81 80 D1 C0 

01 01 01 01 01 01 1A 36 80 A0 70 38 1F 40 30 20 

25 00 40 84 63 00 00 1A 66 21 50 B0 51 00 1B 30 

40 70 36 00 40 84 63 00 00 1E 00 00 00 FD 00 3A 

3E 1E 53 10 00 0A 20 20 20 20 20 20 00 00 00 FC 

00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 D4 

02 03 27 F1 4F 90 1F 04 13 05 14 03 02 12 20 22 
15 11 16 01 26 15 07 50 09 57 07 67 03 0C 00 30 
00 B8 2D E3 05 03 01 02 3A 80 18 71 38 2D 40 58 
2C 45 00 40 84 63 00 00 1E 01 1D 80 18 71 1C 16 
20 58 2C 25 00 40 84 63 00 00 9E 01 1D 00 72 51 
D0 1E 20 6E 28 55 00 40 84 63 00 00 1E 0E 1F 00 
80 51 00 1E 30 40 80 37 00 40 84 63 00 00 1C 00 
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 2B 

- 9 -

■ RS-232C Command (Commonly apply)

● “wb 00 00”: Start Auto-adjustment of white balance.

● “wb 00 10”: Start Gain Adjustment (Inner pattern) 

● “jb 00 c0” : 

● …

● “wb 00 1f”: End of Adjustment

*  If it needs, offset adjustment (wb 00 20-start, wb 00 2f-

end)

●  “wb 00 ff”: End of white balance adjustment (inner pattern 

disappear)

■ Adjustment Mapping information

●  When Color temperature (White balance) Adjustment 

(Automatically)

-  Press “Power only key” of service remocon and operate 

automatically adjustment.

- Set BaudRate to 115200.

● You must start “wb 00 00” and finish it “wb 00 ff”.

● If it needs, then adjustment “Offset”.

■ White Balance Adjustment (Manual adjustment)

● Test Equipment: CA-210

-  Using PDP color temperature, Color Analyzer (CA-210) 

must use CH 10, which Matrix compensated (White, Red, 

Green, Blue compensation) with CS-2100. See the 

Coordination bellowed one. 

● Manual adjustment sequence is like bellowed one.

-  Turn to “Ez-Adjust” mode with press ADJ button of service 

remocon.

-  Select “10.Test Pattern” with CH+/- button and press 

enter. Then set will go on Heat-run mode. Over 30 

minutes set let on Heat-run mode.

-  Let CA-210 to zero calibration and must has gap more 

10cm from center of PDP module when adjustment. 

-  Press “ADJ” button of service remocon and select 

“7.White-Balance” in “Ez-Adjust” then press “►” button of 

navigation key. (When press “►” button then set will go to 

full white mode)

- Adjust at three mode (Cool, Medium, Warm)

- If “cool” mode 

   Let B-Gain to 192 and R, G, B-Cut to 64 and then control 

R, G gain adjustment High Light adjustment.

-  If “Medium” and “Warm” mode Let R-Gain to 192 and R, 

G, B-Cut to 64 and then control G, B gain adjustment 

High Light adjustment.

- All of the three mode 

   Let R-Gain to 192 and R, G, B-Cut to 64 and then control 

G, B gain adjustment High Light adjustment.

- With volume button (+/-) you can adjust.

-  After all adjustment finished, with Enter (■ key) turn to 

Ez-Adjust mode. Then with ADJ button, exit from 

adjustment mode

Attachment:  White Balance adjustment coordination and color 

temperature.

● Using CS-1000 Equipment. 

- COOL : T=11000K, ∆uv=0.000, x=0.276 y=0.283 

- MEDIUM  : T=9300K, ∆uv=0.000, x=0.285 y=0.293 

- WARM  : T=6500K, ∆uv=0.000, x=0.313 y=0.329 

●  When tester will measure on Cool condition, adjust W30 on 

TV display menu.

●  When tester will measure on medium condition, adjust 0 on 

TV display menu.

RS-232C 

COMMAND

[CMD ID DATA]

M

I

N

CENTER

(DEFAULT)

M

A

X

Cool Mid Warm

Cool Mid Warm

R Gain

jg

Ja

jd

00

184 192

192

192

G Gain

jh

Jb

je

00

187 183

159

192

B Gain

ji

Jc

jf

00

192 161

95

192

R Cut

64

64

64

127

G Cut

64

64

64

127

B Cut

64

64

64

127

RS-232C COMMAND

[CMD           ID        DATA]

Meaning

wb

00

00

White Balance adjustment start.

wb

00

10

Start of adjust gain
(Inner white pattern)

wb

00

1f

End of gain adjust

wb

00

20

Start of offset adjust
(Inner white pattern)

wb

00

2f

End of offset adjust

wb

00

ff

End of White Balance adjust
(Inner pattern disappeared)

- 10 -

●  When tester will measure on warm condition, adjust W30 on 

TV display menu.

● Using CA-210 Equipment. (10 CH)

- Contrast value: 216 Gray

- Brightness spec.

-  Press In-Start button of Service Remocon then set the 

“4.Baud Rate” to 115200. Then check RS-232C control and 

model (Not allowed Korean model). It is selection of Country 

about Rating and Time Zone.

■  Models: All models which PU11A Chassis (See the first 

page.) 

■  Press “In-Start” button of Service Remocon, then enter the 

“Option” Menu with “PIP CH-“ Button 

■  Select one of these three (USA, CANADA, MEXICO) de-

pends on its market using “Vol. +/-“button.

* Caution :  Don’t push The INSTOP KEY after completing the 

function inspection.

* Caution : Inspection only PAL M / NTSC 

■ Check the connection between set and power cord

■  Fully connected (Between set and power cord) set enter the 

Auto-test sequence.

■ Connect D-Jack AV jack test equipment.

■ Turn on Auto-controller(GWS103-4)

■ Start Auto GND test.

■ If its result is NG, then notice with buzzer.

■ If its result is OK, then automatically it turns to ESD Test.

■ Operate ESD test

■ If its result is NG, then notice with buzzer.

■  If its result is OK, then process next steps. Notice it with 

Good lamp and STOPER Down.

■ Test Voltage 

● GND: 1.5KV/min at 100mA

● Signal: 3KV/min at 100mA

■ Test time: just 1 second.

■ Test point

●  GND test: Test between Power cord GND and Signal 

cable metal GND.

●  ESD test: Test between Power cord GND and Live and 

neutral.

■ Leakage current: Set to 0.5mA(rms)

          (Va, Vs voltage adjustment)

6.4.1. Test equipment : D.M.M 1EA

6.4.2. Connection Diagram for Measuring

 : refer to fig.1  

<XPOWER4 50T3/R3 PSU>

6.4.3. Adjustment method

 

6.4.3.1. Vs adjustment (refer fig.1)

(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 left/top  ( deviation ; 

±0.5V)

6.4.3.2. Va adjustment (refer fig.1)

(1) After receiving 100% Full White Pattern, HEAT RUN.

(2)  Connect + terminal of D.M.M. to Va pin of P811, connect 

-terminal to GND pin of P811

(3)  After turning VR502,voltage of D.M.M adjustment as same 

as Va voltage which on label of panel left/top (deviation; 

±0.5V)

Color 

temperature

Test 

Equipment

Color Coordination

x

y

COOL

CA-210

0.276 ± 0.002 0.283 ± 0.002

MEDIUM

CA-210

0.285 ± 0.002 0.293 ± 0.002

WARM

CA-210

0.313 ± 0.002 0.329 ± 0.002

Item

White average

 brightness

Brightness uniformity

Min

49

-20

Typ

60

Max

+20

Unit

cd/m²

%

Remark -  100% Window White 

Pattern

- 100IRE(255Gray)

- Picture: Vivid(Medium)

-  85IRE(216Gray) 100% 

Window White Pattern

- Picture: Vivid(Medium)

(fig.1) PCB Assy Voltage adjustment