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]
- JIG for ISP
- PC that is installed with "WISP" program.
- Control + Power LED PCB Ass'y
ISP SEQUENCE
- Connect main pcb ass'y with JIG for ISP
- Execute "WISP" Program
- Compare UOC version in BOM with version of hex file.
- Push "Browse…" button in WISP program and select hex file
- Push "Auto Execute" button
- Occur an Error, try again and again. 4)~5)
- After finishing ISP, Must AC off / ON
- Amber LED is blink during write default value in EEPROM (24C32)
- ALL ISP process is finished when Amber LED is off and Blue LED is ON
- 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
- TV
- AV1 (SCART)
- AV2 (CVBS/ S-Video)
- RGB-DTV
- RGB-PC
- PC Audio In and H/P Out
TOTAL ASSEMBLY PROCESS
If DDC CMD don't work, please
check below.
- Enter SVC menu by SVC Remote controller
- 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
- "IIC_ SW" must set "0°" By pushing "POWER ON" and "TILT" key.
- Above 30 minutes H/run in RF no signal
- 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
- 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.
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).
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)
