DOWNLOAD LG 22LS4R (CHASSIS:LP69C) Service Manual ↓ Size: 4.24 MB | Pages: 26 in PDF or view online for FREE

Model
22LS4R (CHASSIS:LP69C)
Pages
26
Size
4.24 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LCD
File
22ls4r-chassis-lp69c.pdf
Date

LG 22LS4R (CHASSIS:LP69C) Service Manual ▷ View online

- 11 -
- Adjust by commanding AUTO_COLOR_ADJUST
(0xF1) 0x00 0x02 instruction.
2) Confirmation
- We confirm whether “0x8E” address of EEPROM
“0xB4” is “0xAA” or not.
- If “0x8E” address of EEPROM “0xB4” isn’t “0xAA”, we
adjust once more.
- We can confirm the ADC values from “0x00~0x05
addresses in a page “0xB4”.
3.3. Function Check
A
A
Check display and sound 
- Check Input and Signal items. (cf. work instructions)
1) TV
2) AV1 (SCART)
3) AV2 (CVBS/ S-Video)
4) COMPONENT (480P)
5) RGB (PC : 1024 x 768 @ 60hz)
6) HDMI
7) PC Audio In and H/P Out
* Display and Sound check is executed by Remote control.
4. Total Assembly line process
4.1. Adjustment Preparation
(1) Above 30 minutes H/run in RF no signal 
(2) 15 Pin D-Sub Jack is connected to the signal of Pattern
Generator.
4.2. Confirm color coordinate of RGB
(1) Set Input to RGB.
(2) Input signal : (1440 x 900 @ 60Hz) Full white 216/255 gray
level (100 IRE, Model : 112, Pattern : 4 at MSPG925L)
(3) Set CSM : Cool
(4) Confirm whether x = 0.283±0.03, y = 0.298±0.03 or not. 
4.3. Confirm color coordinate of AV2
(1) Set Input to AV2
(2) Input signal : CVBS, PAL @ 50Hz
Full white 216/255 gray level (85 IRE, Model : 202, Pattern
: 78 at MSPG925L)
(3) Set PSM : Dynamic / CSM : Cool
(4) Confirm whether x = 0.283±0.03, y = 0.298±0.03 or not.
4.4. Confirm color coordinate of component
(1) Set Input to COMPONENT.
(2) Input signal : 480P
Full white 216/255 gray level (85 IRE Model : 212, Pattern :
78 at MSPG925L)
(3) Set PSM : Dynamic / CSM : Cool
(4) Confirm whether x = 0.283±0.03, y = 0.298±0.03 or not.
4.5. Other quality 
A
Confirm that each items satisfy under standard condition
that was written product spec.
A
Confirm Video and Sound at each source.
(1) AV
1) Select input AV1 and whether picture is displayed or not.
- SCART output displayed or not.
2) Select input AV2 (S-video) and whether picture is
displayed or not
3) Select input AV2 (CVBS) and whether picture is
displayed or not
(2) TV
- Select input TV and check below item 
* 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.
Refer to “7.Preset CH information”.
(3) RGB
- Select input RGB and whether picture is displayed or not.
(4) COMPONENT
- Select input COMPONENT and whether picture is
displayed or not.
(5)HDMI
- Select input HDMI and whether picture is displayed or not
4.6. DPM operation confirmation
- Check if Power LED Color and Power Consumption operate
as standard. 
(1) Set Input to RGB and connect D-sub cable to set.
(2) Measurement Condition : 230V@ 50Hz (Analog)
(3) Confirm DPM operation at the state of screen without
Signal
4.7 DDC EDID Write
1) Connect D-sub Signal Cable to D-Sub Jack.
2) Connect HDMI Signal Cable to HDMI Jack.
3) Write EDID DATA to EEPROM(24C02) by using DDC2B
protocol.
4) Check whether written EDID data is correct or not. (refer
to Product spec).
(1) 19LS4R EDID DATA
1) ANALOG DATA 128Byte
2) DIGITAL DATA 256Byte
a. All Data : HEXA Value
b. Changeble Data
* Serial No : Controlled/ Data : 01
** Month : Controlled/ Data :00
*** Year : Controlled
**** Check sum
4.8. HDCP SETTING
(High-Bandwidth Digital Contents Protection)
1) Connect D-sub Signal Cable to D-Sub Jack.
2) Input HDCP key with HDCP-key- in-program.
3) HDCP Key value is stored on EEPROM(AT24C64) which is
E00~F20 addresses of  0xBC~0xBE page.
4) AC off/ on and on HDCP button of MSPG925 and confirm
whether picture is displayed or not of using MSPG925.
5) HDCP Key value is different among the sets.
4.9. Outgoing condition Configuration
1) After all function test., press IN-STOP Key by SVC Remote
control. And Make Ship Condition. 
2) When pressing IN-STOP key by SVC remote control,
Green and red LED are blinked alternatively. And then
Automatically turn off. (Must not AC power OFF during
blinking)
- Confirm whether is normal or not when  between power
board's ac block and GND is impacted on 1.5kV(dc) or
2.2kV(dc) for one second.
4.11 Option data setting (SVC OSD setting) 
(1) PAL Model (Change by Suffix)
- 12 -
Option1
1
200PR
No
2
ACMS
YES
3
TEXT
FLOF
TOP / FLOF
4
CH+AU
0
0 : Except below area
1 : China, Australia
5
BOOSTER
No
Option2
1
SYS
No
BG/IDK/L
2
A2 ST
YES
Acting FM-ST after checking Nicam
3
I II SAVE
No
4
HDEV
No
5
V-CURVE
No
6
MONO
No
Option3
1
KEY-TYPE
2
2 : 8 key
Option4  
1
Default Lang
3
2
Lang
0
English  Deutsch  French  Italiano
Spanish  Nederlands  Svenska  
Norsk  Dansk  Suomi
Portuguese  Romaneste  Polski  
Magyar  Chesky  
ΡУССКИЙ
3
T-Lang
0
AUSTRIA  BULGARIA  CROATIA
CZECH  DENMARK  ENGLAND
ESTONIA  FINLAND  FRANCE
GERMANY  GREECE  HUNGARY
ITALY  LATVIA  NETHERLANDS
NORWAY  POLAND  PORTUGAL
RUMANIA  RUSSIA  SERBIA
SLOVAKIA  SLOVENIA  SPAIN
SWEDEN  SWITZERLAND
TURKEY  ARAB  HEBREW  Others
Option5
1
2 HR-OFF
Yes
2
TV-LINK-TUNER
No
3
FACTORY MODE
No
4
CHANNEL-MUTE
Yes
No.
Item
Condition
Remark
- 13 -
5. Adjustment Command
5.1. Adjustment Commands(LENGTH=84)
5.2 EEPROM  DATA READ
(1) Signal Table
(2) Command Set
* Purpose : To read the appointment Address of E2PROM by
128(80h)-byte
5.3. E2PROM Data Write
(1) Signal Table
LEN : 84h+Bytes
CMD : 8Eh
ADH : E
2
PROM  Slave Address(A0,A2,A4,A6,A8),  Not
00h(Reserved by BufferToEEPROM)
ADL : E
2
PROM  Sub Address(00~FF)
Data : Write data
(2) Command Set
* Purpose
1) EDID write : 16-byte by 16-byte, 8 order (128-byte)
write(TO “00 – 7F” of “EEPROM Page A4”).
2) FOS Default write : 16-mode data (HFh, HFl, VF, STD,
HP, VP, Clk, ClkPh, PhFine) write.
3) Random Data write : write the appointment Address of
E2PROM.
5.4. VRAM Read
1) Send CMD(70h) to read Video RAM value from MICOM
And save its value to 128-Bytes Buffer.(Common Buffer for
the use of EDID)
2) Delay 500ms. (Time to Wait and Read Video RAM from
MICOM)
3) Be transmitted the contents of MICOM’s 128-bytes Buffer to
PC. (128th Data is the CheckSum of 127-bytes data :
That’s OK if the value of adding 128-bytes Data is Zero)
FACTORY ON
E0
00
00
Factory mode on
FACTORY OFF
E2
00
00
Factory mode off
EEPROM ALL INIT.
E4
00
00
EEPROM All clear
EEPROM Read
E7
00
00
EEPROM Read
EEPROM Write
E8
00
data
EEPROM Write by some 
values
COLOR SAVE
(R/G/B cutoff, Drive,
EB
00
00
Color Save
Contrast, Bright)
H POSITION
20
00
00 – 100 They have different range
V POSITION
30
00
00 – 100 each mode, FOS Adjustment
CLOCK
90
00
00 – 100
PHASE
92
00
00 – 100
R DRIVE
16
00
00 – FF
Drive adjustment
G DRIVE
18
00
00 – FF
B DRIVE
1A
00
00 – FF
R CUTOFF
80
00
00 – 7F
Offset adjustment
G CUTOFF
82
00
00 – 7F
B CUTOFF
84
00
00 – 7F
BRIGHT
10
00
00 – 3F
Bright adjustment
CONTRAST
12
00
00 - 64
Luminance adjustment
AUTO_COLOR_
F1
00
02
Auto COLOR Adjustment
ADJUST
CHANGE_COLOR
F2
00
0,1,2,3
0: COOL
_TEMP
1: NORMAL
2: WARM
3: USER
FACTORY_DEFAULT
F3
00
00
Factory mode off 
& II_SW is “1”
& Input change to “ TV”
AUTO_INPUT
F4
00
0,1,2,4
0 :  TV
CHANGE
1 :  AV1
2 :  AV2
3 :  Component
4 :  RGB
5 :  DVI
ADR
VAL
Description
CMD
(hex)
Adjustment Contents
128 Bytes
Delay 100ms
Data 128
EEPROM READ
E7
A0
0
0-Page   0~7F  Read
80
0-Page  80~FF  Read
A2
0
1-Page   0~7F  Read
80
1-Page  80~FF  Read
A4
0
2-Page   0~7F  Read
80
2-Page  80~FF  Read
A6
0
3-Page   0~7F  Read
80
3-Page  80~FF  Read
Adjustment contents CMD(hex) ADH(hex) ADL(hex)
Details
EEPROM WRITE
E8
94
16-Byte Write
84+n
n-byte Write
Adjustment contents
CMD(hex)
ADH(hex)
Details
TROUBLE SHOOTING
1. No Power (LED indicator off) : [A] Process
- 14 -
Check 15V or
ST_5V of Power B/D.
Fail
Pass
Check short of Main B/D
or Change Power B/D.
Check Output of
IC1100, IC1101.
Fail
Check short of
IC100, Q307.
Pass
Pass
Fail
Re-soldering or Change
defect part of IC100, Q307.
Change IC1100, IC1101.
Pass
Change IC1102, IC1103.
Check Output of
IC1102.
Fail
Check short of
Q307, TU600, IC500.
Fail
Re-soldering or Change
defect part of Q307,
TU600, IC500.
Pass
Pass
Change IC1104, IC1105.
Change LED Assy.
Check Output of
IC1104, IC1105.
Pass
Check LED Assy.
Pass
Check P304 Connector.
Fail
Check short of
IC100, IC400.
Fail
Fail
Re-soldering or Change
defect part of IC100, IC400.
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