LG 50PK750-ZA / 50PK750N-ZA (CHASSIS:PD01A) Service Manual ▷ View online
ⓐ Product ID
ⓑ Serial No
=> Controlled on production line
ⓒ Month, Year
=> Controlled on production line:
ⓓ Model Name
ⓔ Checksum
=> Changeable by total EDID data
ⓕ HDMI Port No.
O
Auto EDID Download Map(RS-232C)
7. PCMCIA CARD Check
You must adjust DTV 29 Channel and insert PCMCIA CARD
to socket.
- If PCMCIA CARD works normally, video signals will appear
to socket.
- If PCMCIA CARD works normally, video signals will appear
on screen.
But it works abnormally, “No CA module” will appear on
screen.
screen.
[ Caution: Set up “RF mode” before launching products.
8. POWER Supply Unit PCB Ass’y
Va/Vs Voltage Adjustment
Caution: Both Vs and Va voltage adjustment are necessary.
8-1. Model name:
42PJ250-ZC, 42PJ350-ZA, 42PJ550-ZD, 42PJ650-ZA
50PJ250-ZC, 50PJ350-ZA, 50PJ550-ZD, 50PJ650-ZA
50PK250-ZA, 50PK350-ZB, 50PK550-ZE, 50PK750-ZA
60PK250-ZA, 60PK550-ZE
50PJ250-ZC, 50PJ350-ZA, 50PJ550-ZD, 50PJ650-ZA
50PK250-ZA, 50PK350-ZB, 50PK550-ZE, 50PK750-ZA
60PK250-ZA, 60PK550-ZE
8-2. Va/Vs Adjustment Procedure
(1) Connect positive(+) terminal of DMM to Vs/Va pin, connect
negative(-) terminal to GND.
(2) Turning ‘Vs/Va Adjust’ and adjust Vs/Va voltages to a
value which is written on a right/top label of a module.
(deviation ; ±0.5V)
(deviation ; ±0.5V)
[Caution]
- Each Power Supply Unit PCB assembly must be checked by
check JIG set. (Because power PCB Ass’y damages to PDP
Module, especially be careful)
Module, especially be careful)
- Set up “RF mode(noise)” before a voltage adjustment.
- Test equipment: DMM 1EA
- Test equipment: DMM 1EA
9. White Balance Adjustment
Caution: Press the POWER ON KEY on R/C before W/B
adjustment.
adjustment.
O
Test Equipment
Color Analyzer (CS-1000, CA-100+(CH.10), CA-210(CH.10))
O
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
You should use Channel 10 which is Matrix compensated
(White, Red, Green, Blue revised) by CS-1000 and adjust
in accordance with White balance adjustment coordinate.
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NO
Item
CMD1
A
A
0
0
10
00
E
A
CMD2 Data0
Enter
download
MODE
Download
‘Mode In’
When transfer the ‘Made
In’, Carry the command.
Automatically download
(The use of a internal
Data)
Download
EDID data and
Model option
download
MODEL
EDID MODEL
PRODUCT_ID
FUNCTION
ALL Model
LG DTV
0001(0x01, 0x00)
Analog
ALL Model
LG DTV
0001(0x01, 0x00)
Digital
FHD
HD
HDMI1
0xE2
0xB4
0xAF
0xB4
HDMI2
0xE2
0xA4
0xAF
0xA4
HDMI3
0xE2
0x94
0xAF
0x94
HDMI4
-
-
-
-
RGB
0x62
0x2F
9-1. Color Temperature Standards According
to CSM and Module(TBD)
9-2. Change Target Luminance and Range
of the Auto Adjustment W/B Equipment
- 42PJ250-ZC(42T1), 42PJ350-ZA(42T1),
42PJ550-ZD(42T1), 42PJ650-ZA(42T1),
- 50PJ250-ZC(50T1), 50PJ350-ZA(50T1),
50PJ550-ZD(50T1), 50PJ650-ZA(50T1)
- 50PK250-ZA(50R1), 50PK350-ZB(50R1),
50PK550-ZE(50R1), 50PK750-ZA(50R1)
- 60PK250-ZA(60R1), 60PK550-ZE(60R1)
9-3. White Balance Adjustment Coordinate
and Color Temperature
[ PC (for communication through RS-232C) ? UART Baud
rate : 115200 bps
9-4. Automatic W/B Adjustment
Connect to auto controller like below.
(2) Start White-Balance adjustment, then the full white window
pattern will appear on the screen.
(3) Adjust in the place where the influx of light like floodlight
around is blocked.
(illumination is less than 10ux).
(4) Measure and adjust after sticking the Color Analyzer (CA-
100+, CA210 ) to the side of the module.
O
Auto W/B Adjustment Map(RS-232C)
RS-232C COMMAND
[ CMD ID DATA ]
[ CMD ID DATA ]
Wb 00 00 White Balance Start
Wb 00 FF White Balance End
Wb 00 FF White Balance End
9-5. Manual W/B Adjustment
(1) Execute the zero calibration of CA-100+ / CA-210.
(2) Press the ‘ADJ’ button on a service R/C and enter EZ
(2) Press the ‘ADJ’ button on a service R/C and enter EZ
ASJUST by selecting ‘6. White Balance’.
(3) Then, 216 gray pattern will appear on the screen.
(4) Change the R/G/B-Gain as passing in 3 color coordinates
(4) Change the R/G/B-Gain as passing in 3 color coordinates
and temperatures, COOL, MEDIUM and WARM.
< Temperature: COOL >
- R-Cut / G-Cut / B-Cut is set to 64
- Control R-Gain and G-Gain.
- Each gain is limited to 192
- Control R-Gain and G-Gain.
- Each gain is limited to 192
< Temperature: MEDIUM >
- R-Cut / G-Cut / B-Cut is set to 64
- Control R-Gain and G-Gain.
- Each gain is limited to 192
- Control R-Gain and G-Gain.
- Each gain is limited to 192
< Temperature: WARM >
- R-Cut / G-Cut / B-Cut is set to 64
- Control G-Gain and B-Gain.
- Each gain is limited to 192
- Control G-Gain and B-Gain.
- Each gain is limited to 192
(5) Press ‘EXIT’ button on a service R/C
- 10 -
20
Range
50
Target luminance
128
64
64
64
B C ut
128
64
64
64
G Cut
128
64
64
64
R Cut
50H3
60H3
60H3
255
192
192
192
00
jf
Jc
ji
B Gain
255
192
192
192
00
je
Jb
jh
G Gain
255
192
192
192
00
jd
Ja
jg
R Gain
Warm
Med
Cool
Warm
Med
Cool
MA X
CENTER
(DEFAULT)
Min
RS-232C COMMAND
[CMD ID DATA]
6500K
Warm
9300K
Medium
11000K
Cool
PLASMA
CSM
<Notice> Module Heat-Run Condition for W/B
(1) The adjustment must be performed in the circumstance of
25±5°C of temperature and 65±10% of relative humidity if
there is no any specifics.
there is no any specifics.
(2) Before an W/B adjustment, the module which will be used
should be placed in the circumstance of 15°C~25°C for
above 2 hours.
above 2 hours.
(3) If a module was placed in the circumstance of below 15°C,
it should be placed in the circumstance of 15°C~25°C for
above 2 hours or be run for above 5 minutes in an aging
environment of 60°C.
above 2 hours or be run for above 5 minutes in an aging
environment of 60°C.
(4) Before an W/B adjustment, TV set should be run for 5
minutes at least.
10. Serial Number Download
10-1. Download Procedure
(1) Press “Power on” button of a service R/C.(Baud rate :
115200 bps)
(2) Connect RS232-C Signal Cable.
(3) Write Serial number through RS-232C.
(4) Check the serial number at the Diagnostics of ‘SETUP’
(3) Write Serial number through RS-232C.
(4) Check the serial number at the Diagnostics of ‘SETUP’
menu. (Refer to below).
Caution : Don’t download HDMI/RGB EEPROM to write a
model name. Model name dois unnecessary
because this model use ‘Tool Option’ to call a model
name.
because this model use ‘Tool Option’ to call a model
name.
10-2. Signal TABLE
CMD
: A0h
LENGTH : 85~94h (1~16 bytes)
ADH
ADH
: EEPROM Sub Address high (00~1F)
ADL
: EEPROM Sub Address low (00~FF)
Data
: Write data
CS
: CMD + LENGTH + ADH + ADL + Data_1 + ... +
Data_n
Delay
: 20ms
10-3. Command Set
[Description]
FOS Default write : <7mode data> write
Vtotal, V_Frequency, Sync_Polarity, Htotal, Hstart, Vstart,
0, Phase
Data write : Model Name and Serial Number write in
EEPROM,.
Vtotal, V_Frequency, Sync_Polarity, Htotal, Hstart, Vstart,
0, Phase
Data write : Model Name and Serial Number write in
EEPROM,.
11. CI+ Key Download
11-1. Download Procedure
(1) Press "Power on" button of a service R/C.(Baud rate :
115200 bps)
(2) Connect RS232-C Signal Cable.
(3) Write CI+ Key through RS-232-C.
(4) Check whether the key was downloaded or not at ‘In Start’
(3) Write CI+ Key through RS-232-C.
(4) Check whether the key was downloaded or not at ‘In Start’
menu. (Refer to below)
12. Check Information
(Serial No. & Model name)
(1) Push the menu button in DTV mode.
(2) Select the SETUP -> Diagnostics -> To set
(3) Check the Serial Number
(2) Select the SETUP -> Diagnostics -> To set
(3) Check the Serial Number
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- 12 -
TROUBLESHOOTING GUIDE
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