Table of Contents
Advertisement
1. Application Range
This specification sheet is applied to all of the LED LCD TV
with LD23E chassis.
2. Designation
(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) Adjustment must be done in the correct order.
(3) The adjustment must be performed in the circumstance of
25 °C ± 5 °C of temperature and 65 % ± 10 % of relative
humidity if there is no specific designation.
(4) The input voltage of the receiver must keep AC 100-240
V~, 50/60 Hz.
(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.
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.
[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.
3. Automatic Adjustment
3.1. ADC Adjustment
3.1.1. Overview
ADC adjustment is needed to find the optimum black level
and gain in Analog-to-Digital device and to compensate RGB
deviation.
3.1.2. Equipment & Condition
(1) USB to RS-232C Jig
(2) MSPG-925 Series Pattern Generator(MSPG-925FA,
pattern - 65)
- Resolution : 480i Comp1
1080P Comp1
1920*1080 RGB
- Pattern : Horizontal 100% Color Bar Pattern
- Pattern level : 0.7 ± 0.1 Vp-p
- Image
Copyright ©
LG Electronics. Inc. All rights reserved.
Only for training and service purposes
ADJUSTMENT INSTRUCTION
- 12 -
3.1.3. Adjustment
(1) Adjustment method
- Using RS-232, adjust items in the other shown in
"3.1.3.3)"
(2) Adj. protocol
Protocol
Command
Enter adj. mode
aa 00 00
a 00 OK00x
xb 00 04
b 00 OK04x (Adjust 480i, 1080p Comp1 )
Source change
xb 00 06
b 00 OK06x (Adjust 1920*1080 RGB)
Begin adj.
ad 00 10
OKx (Case of Success)
Return adj. result
NGx (Case of Fail)
(main)
(main)
ad 00 20
000000000000000000000000007c007b006dx
Read adj. data
(sub )
(Sub)
000000070000000000000000007c00830077x
ad 00 21
NG 03 00x (Fail)
NG 03 01x (Fail)
Confirm adj.
ad 00 99
NG 03 02x (Fail)
OK 03 03x (Success)
End adj.
aa 00 90
a 00 OK90x
Ref.) ADC Adj. RS232C Protocol_Ver1.0
(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]
- ad 00 90 End adj.
3.2. MAC address D/L, CI+ key D/L, Widevine
key D/L
Connect: PCBA Jig → RS-232C Port== PC → RS-232C Port
Communication Prot connection
▪ Com 1,2,3,4 and 115200(Baudrate)
Mode check: Online Only
▪ Check the test process: DETECT → MAC → CI → Widevine
→ ESN
▪ Play: START
▪ Result: Ready, Test, OK or NG
▪ Printer Out (MAC Address Label)
Set ACK
LGE Internal Use Only
- Quick Links:
- Service Manual
- Hdmi Input
- Edid Data
- Block Diagram
Hide quick links:
Advertisement
Table of Contents
