LG 50PA6500-SA (CHASSIS:PB21A) Service Manual ▷ View online
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● 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.
5.3. Test of RS-232C control.
- Press In-Start button of Service Remocon then set the
“4.Baud Rate” to 115200. Then check RS-232C control and
5.4. Selection of Country option.
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
6. GND and ESD Testing
6.1. Prepare GND and ESD Testing.
■ Check the connection between set and power cord
6.2. Operate GND and ESD auto-test.
■ 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.
6.3. Check Items.
■ 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)
6.4. POWER PCB Ass’y Voltage adjustment
(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
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7. Default Service option.
7.1. ADC-Set.
■ R-Gain adjustment Value (default 128)
■ G-Gain adjustment Value (default 128)
■ B-Gain adjustment Value (default 128)
■ R-Offset adjustment Value (default 128)
■ G-Offset adjustment Value (default 128)
■ B-Offset adjustment Value (default 128)
7.2. White balance. Value.
7.3. Temperature Threshold
■ Threshold Down Low
20
■ Threshold Up Low
23
■ Threshold Down High
70
■ Threshold Up High
75
8. USB DOWNLOAD(*.epk file download)
■ Put the USB Stick to the USB socket
■ Press Menu key, and move OPTION
■ Press “FAV” Press 7 times
■ Select download file (epk file)
■ After download is finished, remove the USB stick.
■ Press “IN-START” key of ADJ remote control, check the
S/W version.
9. Tool option
Center(Default)
COOL
Mid
Warm
R Gain
192
192
192
G Gain
192
192
192
B Gain
192
192
192
R Cut
64
64
64
G Cut
64
64
64
B Cut
64
64
64
50PA6500-SA
Tool option 1
37056
Tool option 2
39178
Tool option 3
3697
Tool option 4
51270
Tool option 5
10
Country code
03
Country Group
BR
Country
BR
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BLOCK DIAGRAM
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200
400
300
120
520
590
580
601
201
204
205
206
203
304
209
303
540
310
305
301
208
302
900
910
202
207
A2
LV
1
A10
A9
A12
501
240
EXPLODED VIEW
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 X-RADIATION, Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
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 X-RADIATION, Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
IMPORTANT SAFETY NOTICE
Click on the first or last page to see other 50PA6500-SA (CHASSIS:PB21A) service manuals if exist.