Read LG 42LD840 Service Manual online
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ADJUSTMENT INSTRUCTION
1. Application Range
This specification sheet is applied all of the LJ03D/E LCD TV
models, which produced in manufacture department or similar
LG TV factory
models, which produced in manufacture department or similar
LG TV factory
2. Notice
(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.
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
(3) The adjustment must be performed in the circumstance of
25 ºC ± 5 ºC of temperature and 65 % ± 10 % of relative
humidity if there is no specific designation.
humidity if there is no specific designation.
(4) The input voltage of the receiver must keep AC 100-220
V~ 50 / 60Hz.
(5) Before adjustment, execute Heat-Run for 5 minutes.
A
After Receive 100% Full white pattern (06CH) then
process Heat-run
process Heat-run
(or “8. Test pattern” condition of Ez-Adjust status)
A
How to make set white pattern
1) Press Power ON button of Service Remocon
2) Press ADJ button of Service remocon. Select “8. Test
2) Press ADJ button of Service remocon. Select “8. Test
pattern” and, after select “White” using navigation
button, and then you can see 100% Full White pattern.
button, and then you can see 100% Full White pattern.
* In this status you can maintain Heat-Run useless any
pattern generator
* Notice: if you maintain one picture over 20 minutes
(Especially sharp distinction black with white
pattern – 13Ch, or Cross hatch pattern – 09Ch)
then it can appear image stick near black level.
pattern – 13Ch, or Cross hatch pattern – 09Ch)
then it can appear image stick near black level.
3. Adjustment Items
3.1. PCB Assembly Adjustment
A
MAC Address Download
A
Adjust 480i Comp1
A
Adjust 1080p Comp1/RGB
• If it is necessary, it can adjustment at Manufacture Line
• You can see set adjustment status at “1. ADJUST
• You can see set adjustment status at “1. ADJUST
CHECK” of the “In-start menu”
A
EDID (The Extended Display Identification Data)/DDC
(Display Data Channel) download
3.2. Set Assembly Adjustment
A
Color Temperature (White Balance) Adjustment
A
Using RS-232C
A
PING Test
A
Selection Factory output option
4. PCB Assembly Adjustment
4.1. MAC Address
4.1.1. Equipment & Condition
• Play file: Serial.exe
• MAC Address edit
• Input Start / End MAC address
• MAC Address edit
• Input Start / End MAC address
4.1.2 Download method
4.1.2.1 Communication Prot connection
Connect: PCBA Jig-> RS-232C Port== PC-> RS-232C Port
4.1.2.2 MAC Address Download
• Com 1,2,3,4 and 115200(Baudrate)
• Port connection button click(1)
• Port connection button click(1)
• Load button click(2) for MAC Address write.
• Start MAC Address write button(3)
• Check the OK Or NG
• Start MAC Address write button(3)
• Check the OK Or NG
4.1.3 Equipment & Condition
• Each other connection to LAN Port of IP Hub and Jig
PCBA
PC(RS-232C)
RS-232C Po rt
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