LG 15LC1R-ZG Service Manual page 13

3.4 Function Check
3.4.1 DDC2B test
"IIC_ SW" must set "1" (After ADC, automatically set "1")
Execute DDC2B Scan Test
3.4.2 Check display and sound
"IIC_ SW" must set "1
Check Input and Signal items.
1) TV
2) AV1 (SCART)
3) AV2 (CVBS/ S-Video)
4) RGB-DTV
5) RGB-PC
6) PC Audio IN and H/P Out
3.4.3 DCXO setting
3.4.4 II_SW setting for Total Assembly line process
After finished all function check, "IIC_ SW" must set
"0" by pushing "TILT" key in SVC remote controller
4. Total Assembly line process
* Caution *
If DDC CMD don't work, please check below.
1. Enter SVC menu by SVC Remote controller
2. Enter "ETC" menu
Check please, IIC_SW is "0" or "1"
- IIC_SW "0" : DDC Communications.(DDC2AB)
- IIC_SW "1": EDID Write/Read (DDC2B) and Factory default.
* We can change IIC_SW by pushing "TILT" key in SVC
remote controller
4.1 Adjustment Preparation
"IIC_ SW" must set "0"
Above 30 minutes H/run in RF no signal
15 Pin D-Sub Jack is connected to the signal of
Pattern Generator.
4.2 Confirmation of Luminance
Set Statement
Input : RGB PC
Contrast : 100(Max)
Brightness : 50
CSM : Normal
Signal equipment displays
Output Voltage : 700 mVp-p
Output Mode : Full White pattern and XGA@ 60 Hz
Confirm whether luminance is over 200cd or not
4.3 Confirmation of Color Coordinate
Input Full White Pattern (RGB PC)
Set CSM : Normal (9300K)
Confirm whether x=0.283±0.03, y=0.298±0.03 or not
Input Full White Pattern (AV2-CVBS)
Set CSM : Normal (9300K)
Confirm whether x=0.283±0.030, y=0.298±0.03 or not
After Confirming color coordinate and luminance, "IIC_
SW" must set "1"
4.4 Other quality
Confirm that each items satisfy under standard condition
that was written product spec.
Confirm Video and Sound at each source
1) AV
Select input AV1 and whether picture is displayed or not
Select input AV2 and whether picture is displayed or not
Select input S-video and whether picture is displayed or
not
2) TV
Select input TV and check below item
1) In Gumi Factory
C05 (E05) - ELETEXT Function Check
; (Applicable to the model that has Teletext
code set-up item in Product spec)
C07 (E07) - Nicam DUAL Check
C52 (E52) - Nicam Stereo Check
Preset CH information
3) RGB-DTV
Select input RGB DTV and whether picture is displayed
or not
4.5 DPM operation confirmation
Check if Power LED Color and Power Consumption operate as
standard.
Measurement Condition : 230V@ 50Hz (Analog)
Confirm DPM operation at the state of screen without
Video Signal.
4.6 DDC EDID Write
Connect D-sub Signal Cable to D-Sub Connector.
Write EDID DATA to EEPROM(24C02) by using DDC2B
protocol.
Check whether written EDID data is correct or not. (refer
to Product spec).
4.7 Outgoing condition Configuration
After all test is finished, Outgoing Option setting in
Service OSD. And Make Ship Condition.
Press IN-START Key by using the SVC Remote
Controller
Press 8 digit code by SVC Remote controller refer
3854TAA001A in BOM
After option configuration is complete, Press IN-STOP
Key
Amber LED is blink. And then Automatically turn off. .
(Must not AC OFF during blink)
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