LG 20HIZ20 (CHASSIS:LP69F) Service Manual ▷ View online
- 9 -
1. Application Range
These documents is applied to 20" LCD TV(chassis : LP69F)
2. Designation
1) The adjustment is according to the order which is
designated and which must be followed, according to the
plan which can be changed only on agreeing.
plan which can be changed only on agreeing.
2) Power Adjustment : Free Voltage
3) Magnetic Field Condition : Nil.
4) Input signal Unit : Product Specification Standard
5) Reserve after operation : Above 30 Minutes
6) Adjustment equipments: Color Analyzer(CA-210 or CA-
3) Magnetic Field Condition : Nil.
4) Input signal Unit : Product Specification Standard
5) Reserve after operation : Above 30 Minutes
6) Adjustment equipments: Color Analyzer(CA-210 or CA-
110), Pattern Generator (MSPG-925L or Equivalent), DDC
Adjustment Jig equipment, Service remote control.
Adjustment Jig equipment, Service remote control.
3. Main PCB check process
* APC - After Manual - Insert, executing APC
3.1. Download
1) Execute ISP program “Mstar ISP Utility” and then click
“Config” tab.
2) Set as below, and then click “Auto Detect” and check “OK”
message.
If display “Error”, Check connect computer, jig, and set.
If display “Error”, Check connect computer, jig, and set.
3) Click “Read” tab, and then load download file(XXXX.bin) by
clicking “Read”.
4) Click “Auto” tab and set as below, and then click “Run”.
5) After downloading, check “OK” message.
5) After downloading, check “OK” message.
3.2. Function Check
: Check Input and Signal items (cf. work instruction)
(1) TV
(2) AV1 (SCART)
(3) AV2 (CVBS/ S-Video)
(4) “Speaker-out” Sound Out
(2) AV1 (SCART)
(3) AV2 (CVBS/ S-Video)
(4) “Speaker-out” Sound Out
* Display and Sound check is executed by Remote control.
4. Total Assembly line process
4.1. Adjustment Preparation
(1) Above 30 minutes Heat-run in RF no signal
(2) 15 Pin D-Sub Jack is connected to the signal of Pattern
(2) 15 Pin D-Sub Jack is connected to the signal of Pattern
Generator.
4.2. SCART RGB Auto ADC
(1) Apply signal of MSPG-1025D, SCART mode, Model 2,
Pattern 19(White/Black top and bottom) with SCART cable.
(2) Change input source to AV1 and check if SCART RGB
signal is properly displayed.
(3) Press Instart button on service remote control.
(4) Position cursor on Auto-RGB item. Then press ‘Vol up’
(5) Check if the OSD changes like “Auto-RGB Process ->
(4) Position cursor on Auto-RGB item. Then press ‘Vol up’
(5) Check if the OSD changes like “Auto-RGB Process ->
OK”. OK means Auto ADC done successfully.
4.3. Confirm color coordinate of AV2
(1) Set Input to AV2
(2) Input signal : CVBS, PAL@ 50Hz), Full white 216/255 gray
(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 = 0.276±0.03, y = 0.283±0.03 or not.
(4) Confirm whether x = 0.276±0.03, y = 0.283±0.03 or not.
4.4. Other quality
(1) Confirm that each items satisfy under standard condition
that was written product spec..
(2) Confirm Video and Sound at each source.
1) AV
(a) Select input AV1 and check whether picture is
displayed or not. - Check whether SCART output
picture is displayed or not.
picture is displayed or not.
(b) Select input AV2(S-video) and check whether picture
is displayed or not.
(c) Select input AV2(CVBS) and check whether picture
is displayed or not.
2) TV : Select input TV and check below item.(In Gumi factory)
C05(E05) – Check TELETEXT Function (Applicable
to the model that has Teletext code set-
up item in Product spec)
up item in Product spec)
C07(E07) – Check Nicam DUAL
C52 (E52) – Check Nicam Stereo
* Refer to “6.Preset CH information”
C52 (E52) – Check Nicam Stereo
* Refer to “6.Preset CH information”
4.5. Power consumption confirmation
(1) Check if Power LED Color and Power Consumption
operate as standard.
(2) Measurement Condition : 230V~, 50Hz (Analog)
(3) Confirm Stand-by operation.
(3) Confirm Stand-by operation.
ADJUSTMENT INSTRUCTION
(2) OK
(1)
(5)
(5)
(6) .......... OK
(4)
filex x x .bin
4.6. Outgoing condition Configuration
(1) After all function test, press IN-STOP Key by Service
Remote control. And make outgoing condition.
(2) When pressing IN-STOP key by service remote control, green
and red LED are blinked alternatively. And then automatically
turn off.(Must not AC power off during blinking)
turn off.(Must not AC power off during blinking)
4.7. Option data setting (SVC OSD setting)
5. Adjustment Command
5.1. Adjustment Command (LENGTH=84)
- 10 -
No.
1
2
3
4
5
1
2
3
4
5
6
1
1
2
3
1
2
3
4
Item
Option 1
200R
ACMS
Text
CH+AU
BOOSTER
Option 2
SYS
A2ST
I II SAVE
HDEV
V-Curve
MONO
Option 3
KEY-TYPE
Option 4
Default Language
Lang
T-Lang
Option 5
2HR-OFF
TV-LINK-TUNER
FACTORY-MODE
CHANNEL-MUT
Condition
0
1
1
0
0
0
1
0
0
0
0
2
3
1
0
1
0
0
1
Remark
0 : 200 PR Off
1 : 200 PR On
0 : ACMS Off
2 : ACMS On
TOP
FLOF
0 : Except below area
1 : China, Australia
0 : BG/I/DK/L
1 : BG/I/DK/M
Acting FM-ST after checking Nicam
0 : I II SAVE Off
1 : I II SAVE On
0 : Except below area
1 : China
0 : Turbo Volume Off
1 : Turbo Volume On
2 : 8Key
English
German
French
Italian
Spanish
Dutch
Slovak
Norwegian Danish
Finnish
Portuguese Romanian
Polish
Hungarian
Czech
Russian
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
0 : 2 Hour off option - OFF
1 : 2 Hour off option - ON
0 : EEPROM Write Protection On
1 : EEPROM Write Protection Off
VAL
00
00
00
00
data
00
00 – 100
00 – 100
00 – 100
00 – 100
00 – FF
00 – FF
00 – FF
00 – 7F
00 – 7F
00 – 7F
00 – 3F
00 - 64
02
0, 1, 2, 3
00
00
Description
Factory mode on
Factory mode off
EEPROM all clear
EEPROM Read
EEPROM Write by
some values
Color Save
They have different
range each mode,
FOS Adjustment
Drive adjustment
Offset adjustment
Bright adjustment
Luminance adjustment
Auto COLOR
Adjustment
0: COOL
1: NORMAL
2: WARM
3: USER
Factory mode off
& II_SW is “1”
& Input change to “TV”
0 : TV
1 : AV1
2 : AV2
3 : Component
4 : RGB
5 : DVI
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
Adjustment Contents
FACTORY ON
FACTORY OFF
EEPROM ALL INIT.
EEPROM Read
EEPROM Write
COLOR SAVE
(R/G/B cutoff, Drive,
Contrast, Bright)
H POSITION
V POSITION
CLOCK
PHASE
R DRIVE
G DRIVE
B DRIVE
R CUTOFF
G CUTOFF
B CUTOFF
BRIGHT
CONTRAST
AUTO_COLOR_
ADJUST
CHANGE_COLOR_
TEMP
FACTORY_
DEFAULT
AUTO_
INPUTCHANGE
CMD(hex)
E0
E2
E4
E7
E8
EB
20
30
90
92
16
18
1A
80
82
84
10
12
F1
F2
F3
F4
ADR
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
00
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. E
2
PROM 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
: E2PROM 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).
the use of EDID).
2) Delay 500ms(Time to wait and read vZideo 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)
OK if the value of adding 128-bytes Data is Zero)
- 11 -
ST OP
A
A
A
A
A
50
6E
03
CMD
A DH
84+ n
ST ART
A DL
A
CS
A
A
Data_1
A
. . .
Data_n
A
No.
1
2
Adjustment contents
EEPROM WRITE
CMD(hex)
E8
LEN
94
84+n
Details
16-Byte Write
n-byte Write
ADL(hex)
0
80
0
80
0
80
0
80
Details
0-Page 0~7F Read
0-Page 80~FF Read
1-Page 0~7F Read
1-Page 80~FF Read
2-Page 0~7F Read
2-Page 80~FF Read
3-Page 0~7F Read
3-Page 80~FF Read
Adjustment Contents
EEPROM READ
CMD(hex)
E7
ADR(hex)
A0
A2
A4
A6
ST OP
A
A D1
6F
ST OP
ST ART
A
A
A
Dn
A
A
A 50
6E
03
CMD
A DH
84
ST ART
A
A
A DL
A
CS
128 Bytes
Delay 100ms
A
CS
A Data1
6F
ST ART
. . .
Data12
ST OP
NA
ST OP
A
A
A
A
A 50
6E
03
70
00
84
ST ART
A
A
00
A
CS
LGE Gumi
LGEMA
PR 0
45.25
PAL-BG
PHILIPS
MONO
C 01
PR 1
575.25
SECAM-DK
DIGITAL
DUAL
C 34
PR 2
175.25
PAL-BG
PHILIPS
STEREO
FLOF
C 05
PR 3
231.25
PAL-I
FUBK
MONO
S 11
PR 4
62.25
SECAM-BG
PHILIPS
DUAL
C 04
PR 5
189.25
PAL-BG
Crosshatch
NICAM
DUAL
FLOF
C 07
PR 6
703.25
PAL-BG
RGB, WHITE
MONO
C 50
PR 7
719.25
PAL-BG
MATRIX C/B
NICAM
STEREO
C 52
PR 8
631.25
PAL-I
PHILIPS
NICAM
STEREO
C 41
PR 9
807.25
PAL-I
Crosshatch
NICAM
STEREO
C 48
PR 10
55.75
PAL-L
Crosshatch
MONO
C 02
PR 11
152.75
PAL-L
PHILIPS
NICAM
DUAL
S 07
PR 12
591.25
PAL-L
Colorbar
NICAM
STEREO
C 48
PR 13
791.25
SECAM-DK
Colorbar
MUSIC
C61
PR 14
175.25
PAL-B
PHILIPS
A2
STEREO
PR 15
711.25
PAL-G
Colorbar
MONO
PR 16
631.25
PAL-I
Colorbar
NICAM
STEREO
TOP
PR 17
93.25
SECAM-D
PHILIPS
A2
DUAL
FLOF
PR 18
62.25
PAL-B
RED+Circle+Cross
A2
STEREO
FLOF
PR 19
551.25
PAL-G
Colorbar
A2
DUAL
PR 20
471.25
PAL-I
Colorbar
NICAM
STEREO
FLOF
PR 21
687.25
PAL-G
Moving Picture
MONO
PR 22
200.00
SECAM-L
PHILIPS
NICAM
STEREO
PR 23
663.25
SECAM-L
Colorbar
NICAM
MONO
PR 24
503.25
PAL-G
Half Colorbar
A2
DUAL
TOP
PR 25
189.25
SECAM-D
Colorbar
MONO
PR 26
327.25
PAL-D
A2
STEREO
FLOF
- 12 -
6. Preset CH information
PIF[MHz]
SYSTEM
VIDEO
TXT
NAME
SOUND
System
Mode
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