LG 55LW9800-CA (CHASSIS:LC12D) Service Manual ▷ View online
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ADJUSTMENT INSTRUCTION
1. Application range
Chassis
Model Name
Module type
Local
dimming
THX
Remark
LC12D
47/55LW9800-CA
ALEF
(+FPR)
O
X
1 point W/B adjustment
1.1
▪
This spec sheet is applied all of the LCD TV with LC12D chassis
1.2 Major production type
▪SET ( o )
▪CKD ( o )
▪SKD ( o )
▪CKD ( o )
▪SKD ( o )
2. Specification.
2.1 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.
2.2 Adjustment must be done in the correct order.
2.3 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.
2.4 The input voltage of the receiver must keep 100~240V, 50/60Hz.
2.5 The receiver must be operated for about
5 minutes
prior to the adjustment when
module is in the circumstance of over 15
In case of keeping module is in the circumstance of 0°C, it should be placed in
the circumstance of above 15°C for 2 hours
the circumstance of above 15°C for 2 hours
In case of keeping module is in the circumstance of below -20°C, it should be
placed in the circumstance of above 15°C for 3 hours,.
placed in the circumstance of above 15°C for 3 hours,.
Caution) When still image is displayed for a period of 20 minutes or longer (especially where
W/B scale is strong. Digital pattern 13ch and/or Cross hatch pattern 09ch), there can some
afterimage in the black level area.
W/B scale is strong. Digital pattern 13ch and/or Cross hatch pattern 09ch), there can some
afterimage in the black level area.
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3. Adjustment items
3.1 Main PCB check process
▪MAC Address Download
▪Adjust 480i Comp1 (2011year model no need)
▪Adjust 1920*1080p RGB (2011year model no need)
▪EDID(2011year model no need)/DDC download
Above adjustment items can be also performed in Final Assembly if needed. Both
Board-level and Final assembly adjustment items can be check using In-Star Menu
1.ADJUST CHECK.
Board-level and Final assembly adjustment items can be check using In-Star Menu
1.ADJUST CHECK.
3.2 Final assembly adjustment
▪White Balance adjustment
▪RS-232C functionality check
▪ PING Test
▪Factory Option setting per destination
▪Ship-out mode setting (In-Stop)
3.3 Etc
▪Ship-out mode
▪Service Option Default
▪USB Download(S/W Update, Option,
Service only
)
▪ISP Download(Option)
4. Automatic Adjustment
4.1 ADC Adjustment
4.1.1 Overview
ADC adjustment is needed to find the optimum black level and gain in Analog-to-Digital device
and to compensate RGB deviation.
※
If Adjust ADC is “OTP”, It doesn’t need ADC adjustment. (GP3-BCM)
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4.1.2 Equipment & Condition
1) Jig (RS-232C protocol)
2) MSPG-925 Series Pattern Gene
rator(MSPG-925FA, pattern -65)
- Resolution : 480i Comp1
1080P Comp1
1920*1080P RGB
- Pattern : Horizontal 100% Color Bar Pattern
- Pattern level : 0.7±0.1 Vp-p
- Image
- Image
4.1.3 Adjustment
4.1.3.1 Adjustment method
▪ Using RS-232, adjust items listed in 3.1 in the other shown in “4.1.3.3”
4.1.3.2 Adj. protocol
Protocol
Command
Set ACK
Enter adj. mode
aa 00 00
a 00 OK00x
Source change
xb 00 04
xb 00 06
xb 00 06
b 00 OK04x (Adjust 480i, 1080p Comp1 )
b 00 OK06x (Adjust 1920*1080 RGB)
b 00 OK06x (Adjust 1920*1080 RGB)
Begin adj.
ad 00 10
Return adj. result
OKx (Case of Success)
NGx (Case of Fail)
NGx (Case of Fail)
Read adj. data
(main)
ad 00 20
(sub )
ad 00 21
ad 00 20
(sub )
ad 00 21
(main)
000000000000000000000000007c007b006dx
(Sub)
000000070000000000000000007c00830077x
000000000000000000000000007c007b006dx
(Sub)
000000070000000000000000007c00830077x
Confirm adj.
ad 00 99
NG 03 00x (Fail)
NG 03 01x (Fail)
NG 03 02x (Fail)
OK 03 03x (Success)
NG 03 01x (Fail)
NG 03 02x (Fail)
OK 03 03x (Success)
End adj.
aa 00 90
a 00 OK90x
Ref.) ADC Adj. RS232C Protocol_Ver1.0
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4.1.3.3 Adj. order
▪aa 00 00 [Enter ADC adj. mode]
▪xb 00 04 [Change input source to Component1(480i&1080p)]
▪ad 00 10 [Adjust 480i&1080p Comp1]
▪xb 00 06 [Change input source to RGB(1024*768)]
▪ad 00 10 [Adjust 1920*1080 RGB]
▪aa 00 90 End adj.
Ref) ADC adj. RS232C Protocol_Ver1.0
▪aa 00 00 [Enter ADC adj. mode]
▪xb 00 04 [Change input source to Component1(480i&1080p)]
▪ad 00 10 [Adjust 480i&1080p Comp1]
▪xb 00 06 [Change input source to RGB(1024*768)]
▪ad 00 10 [Adjust 1920*1080 RGB]
▪aa 00 90 End adj.
Ref) ADC adj. RS232C Protocol_Ver1.0
4.2 MAC Address
4.2.1 Equipment & Condition
▪ Play file: Serial.exe
▪ MAC Address edit
▪ Input Start / End MAC address
4.2.2 Download method
4.2.2.1 Communication Prot connection
▪ Play file: Serial.exe
▪ MAC Address edit
▪ Input Start / End MAC address
4.2.2 Download method
4.2.2.1 Communication Prot connection
PCBA
PC(RS-232C)
RS-232C Port
Connect: PCBA Jig-> RS-232C Port== PC-> RS-232C Port
4.2.3. Download process
1) Select the download items.
2) Mode check: Online Only
3) Check the test process
- China models: DETECT MAC_WRITE + DDA(DiiVA Device Address)
- Hongkong models: DETECT MAC_WRITE + DDA(DiiVA Device Address) WIDEVINE_WRITE
4) Play: START
5) Check of result: Ready, Test, OK or NG
6) Printer out (MAC Address Label)
4.2.4. Communication Port connection
1) Connect: PCBA Jig RS-232C Port == PC RS-232C Port
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