Hyundai H-LCD2004 User manual

Service Manual
LCD TV
H-LCD2004
rev. 1.03
Include: 2006-01-30
HYUNDAI Electronics Service Support Team RUS

2
CONTENTS
1 CONTENTS ----------------------------------------------------------------------------2
2Main Unit Description---------------------------------------------------------------4
3Features---------------------------------------------------------------------------------6
4Warning and Cautions--------------------------------------------------------------7
5Replacement of Memory IC-------------------------------------------------------9
6Net Dimension-------------------------------------------------------------------------9
7Remote Controller Functions----------------------------------------------------10
8BUS Control Adjustment -----------------------------------------------------11
9Principle ICS ---------------------------------------------------------------------14
10Block Diagram------------------------------------------------------------------------18
11Exploded View------------------------------------------------------------------------27
12List of Parts----------------------------------------------------------------------------28
13Trouble Shooting--------------------------------------------------------------------29

4
2.Main Unit Description

5
3.
Model Model
No. Functions L20L6A No. Functions L20L6A
1 TFT LG.PHILIPS 28 TV in Yes
2 Screen size(mm×mm) 20 inch 29 D-SUB jack Yes
3 Aspect ratio 4:3 30 DVI socket No
4 Resolution 640×480 31 SCART jack Yes
5 Brightness 450cd/m2 32 Ear-Phone Out Yes
6 Contrast(Darkroom) 350:1 33 Teletext Yes
7 Response time(ms) 16 34 Semitransparent menu Yes
8 Color system PAL/SECAM 35 ZOOM No
9 Audio system DK/BG/I 36 16:9 mode No
10 NO.of preset channels 200 37 Child Lock Yes
11 Angel of view 176o 38 Quick View Yes
12 Color display 16777216 39 On/Off Time Yes
13 Color level 16 40 PIP No
14 OSD languages 8 41 NO. of built-in speakers 2
15 AV stereo Yes 42 NO. of outer speakers No
16 Surrounding sound No 43 Audio output power(Built-in)(W) 1.5W×2
17 Audio system DK/BG/I 44 Audio output power(outer)(W) No
18 Bass Yes 45 Total power input（W）60W
19 Balance Yes 46 Voltage range（V）AC220V
20 Sound mode Yes 47 Power frequency（Hz）50~60Hz
21 NICAM Yes 48 Time of sleep timer(MINS) 240Min
22 Mute Yes 49 Net weight(KG) 9.3
23 AV input Yes 50 Gross weight(KG) 12.5
24 AV output No 51 Net dimension(MM) 550×165×44
9
25 Y CbCr No 52 Packaged dimension(CM) 62×25×54
26 Y PBPRNo 53 Approval CE
27 S-video jack Yes 54 Suitable market Europe
Features

4. Warnings and Cautions
7
Warning
High voltages are used in the operation of this product.
Do not remote the cabinet back from your set. Refer
servicing to qualified service personnel.
Warning
To prevent fire or electrical shock hazard, Do not expose
the main unit to rain or moisture.
Warning
Do not drop or push objects into the television cabinet slots or
openings. Never spill any kind of liquid on the television
receiver.
Caution
!
Minimum
If the television is to be built into a
compartment or similarly enclosed, the
minimum distances must be maintained.
Heat build-up can reduce the service life
of your television, and can also be
dangerous.
10c 5cm
20c
10c

8
Caution
Never stand on, lean on, push suddenly the product or its
stand. You should pay special attention to children to children.
!
Caution
!
Do not place the main unit on an unstable cart stand, shelf or
table. Serious injury to an individual, and damage to the
television, may result if it should fall.
!
Caution
When the product is not used for an extended period of time, it
is advisable to disconnect the AC power cord from the AC
outlet.
Caution
!
Avoid exposing the main unit to direct sunlight and other
source of the heat. Do not stand the television receiver
directly on other produces which give off heat. E. g. video
cassette players,Audio amplifiers. Do not block the ventilation
holes in the back cover. Ventilation is essential to prevent
failure of electrical component. Do not squash power supply
cord under the main unit.
Caution
!
The LCD panel used in this product is made of glass.
Therefore, it can break when the product is dropped or
applied with impact. Be careful not to be injured by
broken glass pieces in case the LCD panel breaks.

6. REPLACEMENT OF MEMORY IC
1. MEMORY IC.
This LCD TV uses memory IC. In the memory IC are memorized data for correctly operating the video and
sound circuits. When replacing memory IC, be sure to use IC written with the initial value of data.
2. PROCEDURE FOR REPLACING MEMORY IC
(1) Power off
Unplug the +12V power plug from +12V power socket.
(2) Replace IC
Be sure to use memory IC written with the initial data values or blank memory IC.
(3) Power On
Plug the +12V power plug into +12V power socket. (If memory IC is blank, the program will take 25s to
initial memory IC.)
(4) Check and set SYSTEM default value:
1) Press “Menu” key into “SOUND” menu, then press digital key “6”,”4”,”8”,”3” on the Remote control
unit continuously for factory used.
2)The “M” will be displayed on the screen.
3)Press digital key, (Mkey) and corresponding on-screen display will be appeared.
4) Check the setting value of the SYSTEM default value of Table below. If the vale is different, select
items by [CH+]/[CH-] keys and set value by [VOL+]/[VOL-] keys.
5) Press “STANDBY” key again and return to the normal screen.
7. Net Dimension
9

8. Remote Controller Functions
TV/AV Select
(Ref; P7.)
Sound Volume
Up/Down
（Ref; P6）
Power/Standby
(Ref; P6)
Program Up/Down
(Ref.P6)
MENU
(Ref.P6)
Mute
(Ref.P7.)
Child Lock
(Ref.P8)
Call
(Ref.P7.)
Direct Access Numeric
Keys
(Ref.P6)
Quick View
(Ref.P7)
Picture Effect
(Ref.P8.)
Teletext
(Ref.P11，P12)
?
TV/AV
TEXT
QV
0
9
8
7
6
4 5
3
1 2
-/--
MIX
SUBCODE CANCEL
TIMER
PICTURE
REVEAL
SOUND
V+
HOLD
V-
P+
MENU
P-
S
Sound Effect
(Ref.P8.)
Teletext
(Ref.P11)
10

9. BUS Control Adjustment
A.
To enter BUS control mode, Press “Menu” key into “SOUND” menu, then press digital key “6”,”4”,”8”,”3”
on the Remote control unit continuously for factory used. Press “0” to “9“ key, (Mkey) and corresponding
on-screen display will be appeared.On TV screen “M” will be indicated, this means entered bus control
mode.And press following key, each function will be available.
M1 M2 M3
0
9
8
7
6
4 5
3
1 2
[M1] menu
Receive PAL standard Complete pattern signal.
Adjustment steps
a) Adjust V. SLOPE, to the center horizontal line just appeare from half bottom shadow. And to
avoid the field jitter.
b) Adjust V. SIZE, to avoid the field jitter.
c) Adjust H.SHIFT, to get the picture horizontal center correspond to the panel horizontal center.
d) Adjust OSD.V.POS, to get the OSD vertical position correspond to the panel .
e) Adjust OSD.H.POS, to get the OSD horizontal position correspond to the panel .
f) Adjust MS.V.POS, to get the picture vertical position correspond to the panel.
g) Adjust MS.H.Shift, to get the interlaced mode line shift ,and to to avoid horizontal line jitter.
h) the other is fixed.
Receive NTSC signal and repeat above adjustment.
[M2] menu
AGC Adjustment
a)Receive 60dBμ(1mV)VHcolour bar pattern signal, adjustAGC value,(voltage from high to low), to noise
reduce gradually and just disappeared point.
b) the other is fixed.
[M4] menu
a) Sub Brightness adjustment.
b) Sub Contrast adjustment.
c) Sub Colour adjustment.
d) Sub Sharpness adjustment.
e) Sub Tint adjustment.
f) Adjust MS B Delimiter, to get the value correspond to the brightness, below the value, adjustable
11

12
brightness from UOC, otherwise adjustable brightness from the scaller.
g) Adjust MS B MAX, to limit the maximum adjustable brightness for the scaller.
h) Adjust MS B MIN, to limit the minimum adjustable brightness for the scaller.
i) Adjust MS C Delimiter, to get the value correspond to the contrast, below the value, adjustable contrast
from UOC, otherwise adjustable contrast from the scaller.
j) Adjust MS C MAX, to limit the maximum adjustable contrast for the scaller.
k) Adjust MS C MIN, to limit the minimum adjustable contrast for the scaller.
l) White balance adjustment
Adjust BR COEF, BG COEF,BB COEF, to adjust dim area in white balance.
Adjust CR COEF, CG COEF,CB COEF, to adjust bright area in white balance.
[M7] menu
a) Adjust Standard BRI, Standard BRI, Standard COL, to get state correspond to the standard picture mode.
b) Adjust Sharp BRI, Sharp BRI, Sharp COL, to get state correspond to the dynamic picture mode.
C) Adjust Soft BRI, Soft BRI, Soft COL, to get state correspond to the soft picture mode.
B.
ICs Default Settings
20”
MI 项目 范围 预置值 MI 项目 范围 预置值
M1 50Hz 60Hz M6 OSO 0
V.SLOPE 20 20 AGC SPEED 0
V.SHIFT 32 32 FFI 0
V.SIZE 16 16 FSL 0
V.SC 32 32 FMWS 1
H.SHIFT 47 56 PH2 0
OSD.V.POS 16 8 RPO 1
OSD.H.POS 28 23 NTSC MATRIX USA
MS.H.SHIFT 1 1
MS.V.POS 47 44 M7 LOGO OPTION 0
RGB.H.SHIFT 32 LOGO SIZE 0
PROGRAM
NO.
0 LOGO Position 0
M2 AGC 31 LOGO COLOUR 0
WIDE 20 LOGO ---------- 0
ZOOM 63 Standard BRI 60
SEARCH
SPEED
0 Standard CON 70
SHIPPING 0 Standard COL 50
M3 BT 60 SHARP BRI 65
CT 70 SHARP CON 75
SC 0 SHARP COL 65
RB 32 SOFT BRI 55
GB 32 SOFT CON 55