Tuesday, January 29, 2013

LG 20LS1R-ZG _ ADJUSTMENT INSTRUCTIONS




FOR ANY ADJUSTMENTS, YOU MUST HAVE ITS SERVICE REMOTE CONTROL.

MAIN PCB CHECK PROCESS

If DDC CMD don't work, please check below.
  • IIC_SW is "0" or "1".
  • IIC_SW "0" : DDC Communications.  (DDC2AB) in Factory Side
  • IIC_SW "1" : EDID Write/Read (DDC2B) and Factory default(Shipping Condition).
  • Power-on state
  • Push "IN-START" key in SVC remote controller
  • Enter "Etc." menu, II_SW Change 0 or 1 by "VOL+" key
ISP UOC FILE [REQUIRED EQUIPMENT]
  1. JIG for ISP
  2. PC that is installed with "WISP" program.
  3. Control + Power LED PCB Ass'y
ISP SEQUENCE
  1. Connect main pcb ass'y with JIG for ISP
  2. Execute "WISP" Program
  3. Compare UOC version in BOM with version of hex file.
  4. Push "Browse…" button in WISP program and select hex file
  5. Push "Auto Execute" button
  6. Occur an Error, try again and again. 4)~5)
  7. After finishing ISP, Must AC off / ON
  8. Amber LED is blink during write default value in EEPROM (24C32)
  9. ALL ISP process is finished when Amber LED is off and Blue LED is ON
  10. After ISP, automatically input source change "AV2" and II_SW set to Infinte 0±)
ADC PROCESS
  • "IIC_ SW" must set "0" for Auto Adjust (After ISP, automatically set "0")
DCXO SETTING IN VIDEO

Signal equipment displays
Output Voltage : 700 mVp-p
Impress Resolution : CVBS NTSC-J 60Hz .
Pattern : 8 Color-Bar pattern (Refer below picture).
(Model:207, Pattern: 33 at MSPG925)
(DCXO setting is done automatically by DDC communication)

AUTO GAIN OFFSET ADJUSTMENT
Signal equipment displays
  • Output Voltage : 700 mVp-p
  • Impress Resolution : CVBS 576i.
  • Pattern : gray pattern that left & right is black and center is white signal (Refer below picture).
  • (Model:202, Pattern: 29 at MSPG925L).  Adjust by commanding AUTO_COLOR_ADJUST (0xF1) 0x00 0x00 instruction.
CONFIRMATION
Convert to PC in Input-source
Signal equipment displays
Output Voltage : 700 mVp-p
Impress Resolution SXGA (1280 x 1024 @ 60Hz)
Pattern : gray pattern that left & right is black and center is white signal.  (Model : 45, Pattern : 28 at MSPG925L)
Adjust by commanding AUTO_COLOR_ADJUST (0xF1) 0x00 0x00 instruction.

RGB PC INPUT ADC [AUTO GAIN OFFSET ADJUSTMENT]
SConvert to PC in Input-source
Signal equipment displays
Output Voltage : 700 mVp-p
Impress Resolution SXGA (1280 x 1024 @ 60Hz)
Pattern : gray pattern that left & right is black and center is white signal .
(Model : 45, Pattern : 28 at MSPG925L)
Adjust by commanding AUTO_COLOR_ADJUST(0xF1) 0x00 0x00 instruction.

CONFIRMATION
  • We confirm whether "0x00" address of EEPROM "0xA0" is "0xAA" or not.
  • If "0x00" address of EEPROM "0xA0" isn't "0xAA", we adjust once more
  • We can confirm the ADC values from "0x06~0x0B" addresses in a page "0xA0"
PREPARATION FOR FUNCTION CHECK
  • Input source change TV and II_SW change to "1" by commanding F3 x 00 instruction.
FUNCTION CHECK [DDC2B TEST]
"IIC_ SW" must set "1" (After ADC, automatically set "1")
Execute DDC2B Scan Test

CHECK DISPLAY & 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
TOTAL ASSEMBLY PROCESS
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 "VOL+" key in SVC remote controller.
ADJUSTMENT PREPARATION 
  1. "IIC_ SW" must set "0°" By pushing "POWER ON" and "TILT" key.
  2. Above 30 minutes H/run in RF no signal
  3. 15 Pin D-Sub Jack is connected to the signal of Pattern Generator
CONFIRMATION OF LUMINANCE [RGB-PC INPUT 15", 17" & 19" APPLY]
Set Statement
  • Input : RGB PC
  • Contrast : 100 (Max) / Brightness : 50
  • Signal equipment displays
  • Output Voltage : 700 mVp-p.  Output Mode : Full White pattern and XGA@60 Hz.  (Model : 37 Pattern : 04 MSPG-925)
AV-2 INPUT
  • Set Statement

Input : AV2 (CVBS) / PSM : Dynamic
  • Signal equipment displays

Output Voltage : 700 mVp-p
Output Mode:576i(Model : 202 Pattern : 04 MSPG-925 )

CONFIRMATION OF COLOR COORDINATE
  • Input : Full white pattern RGB-PC(Model : 37 Pattern : 04 MSPG-925).  AV2-CVBS(Model : 202 Pattern : 04 MSPG-925)
  • PSM : Dynamic
  • Confirm whether x+/-0.03 or not. [color temperature 9300K].  After confirming color coordinate and luminance "IIC SW" set "1" automatically.
OUTGOING CONDITION CONFUGURATION
Outgoing Option setting in Service OSD.
  • Press IN-START Key by using the SVC Remote Controller
  • Press 8 digit code by SVC Remote controller refer 3854TAA001A or 3854TAA002A in BOM
  • After option configuration is complete, Exit SVC MENU OSD.
OTHER QUALITY
Confirm that each items satisfy under standard condition that was written product spec.
  • Confirm Video and Sound at each source [AV ]
  • Select input AV1 and whether picture is displayed or not
  • SCART output displayed or not
  • Select input AV2 (CVBS) and whether picture is displayed or not
  • Select input AV2 (S-video) and whether picture is displayed or not
TV
Select input TV and check below item
[1] In Gumi Factory
  • C05 (E05) - TELETEXT 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 CHANNEL INFORMATION
  • RGB-DTV/PC [Select input RGB DTV and whether picture is displayed or not]
DPM OPERATION CONFIRMATION
  1. Check if Power LED Color and Power Consumption operate as standard.
  2. Measurement Condition : 230V@ 50Hz (Analog)
  3. Confirm DPM operation at the state of screen without Video Signal.
DDC EDID WRITE
  1. Connect D-sub Signal Cable to D-Sub Connector
  2. Write EDID DATA to EEPROM (24C02) by using DDC2B protocol.
  3. Check whether written EDID data is correct or not. (refer to Product spec).
OUTGOING CONDITION CONFIGURATION
  • After all function test., press IN-STOP Key by SVC Remote controller. And Make Ship Condition.
  • Amber LED is blink. And then automatically turn off. (Must not AC OFF during blink)