LG L1530SSNTM, L1530S Service Manual

COLOR MONIT OR

SER VICE MANUAL

Website:http://biz.LGservice.com

E-mail:http://www.LGEservice.com/techsup.html

CAUTION

BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.

CHASSIS NO. : CL-61

MODEL:

L1530S (L1530SM-AL**R)

L1530S (L1530SSNTM-AL**R)

( ) **Same model for Service

LightView

SET/AUTO

MENU

+

-

- 1 -

CONTENTS

SPECIFICATIONS

- 2 -

1. LCD CHARACTERISTICS

Type : TFT XGA LCD Module
Size : 326.5(H) x 253.5(V) x 11.2(D)
Pixel Pitch : 0.297mm x 0.297mm
Color Depth :

6bits(with FRC)/ 16M colors

Active Video Area : 15.0inch

(304.128 x 228.096)
Surface Treatment : Anti-Glare, Hard Coating (3H)
Backlight Unit : 2CCFL
Opraating Mode : Transmissive mode, Normally white
Electrical Interface : LVDS interface

2. OPTICAL CHARACTERISTICS

2-1. Viewing Angle by Contrast Ratio

≥

10

(L1530SM / L1530SSNTM)

LPL Module
Left : 55° min. 55° typ. Right: 55° min. 65° typ.
Top : 40° min. 45° typ. Bottom: 50° min. 55° typ.

(L1530SM)

HannStar Module
Left : 50° min. 65° typ. Right: 50° min. 60° typ.
Top : 30° min. 45° typ. Bottom: 40° min. 55° typ.

AUO Module

Left : -50° min. -60° typ. Right: +50° min. +60° typ.
Top : +30° min. +40° typ. Bottom: -50° min. -60° typ

2-2. Luminance

:

200(min.), 250(typ.) at Center point

2-3. Contrast Ratio :

(L1530SM) 300(min.), 400(typ.)

-LPL, AUO Module

400(min.), 500(typ.)

-Hann Star Module

(L1530SSNTM) 300(min.), 400(typ.)

3. SIGNAL (Refer to the Timing Chart)

3-1. Sync Signal

1) Type : Separate Sync. (Horizontal & Vertical)

2) Input Voltage Level: Low=0~0.8V, High=2.1~5.5V

3) Sync Polarity : Positive or Negative

3-2. Video Input Signal

1) Type : R, G, B Analog

2) Voltage Level : 0~0.7 V
a) Color 0, 0 : 0 Vp-p
b) Color 7, 0 : 0.35 Vp-p
c) Color 15, 0 : 0.7 Vp-p

3) Input Impedance : 75 Ω

3-3. Operating Frequency

Horizontal : 30 ~ 63kHz
Vertical : 56 ~ 75Hz

4. POWER SUPPLY

4-1. Power

100-240V~, 50/60Hz 0.6A

4-2. Power Consumption

5. ENVIRONMENT

5-1. Operating Temperature: 10°C~35°C (50°F~95°F)
5-2. Operating Humidity : 10%~80%
5-3. MTBF : 50,000 HRS (Min.)

Lamp Life : 40,000 Hours (Min.)

6. DIMENSIONS (with TILT / with Base)

Width : 368mm (14.48'') / 368mm
Depth : 355mm (13.97'') / 190mm
Height : 105mm (4.13'') / 367mm

7. WEIGHT (with TILT)

Net. Weight : 3.6kg (7.93 lbs)
Gross Weight : 5.0kg (11.02 lbs)

SPECIFICATIONS ................................................... 2

PRECAUTIONS ....................................................... 3

TIMING CHART ....................................................... 4

OPERATING INSTRUCTIONS ................................ 5

WIRING DIAGRAM ................................................. 6

BLOCK DIAGRAM ................................................... 7

DESCRIPTION OF BLOCK DIAGRAM ................... 8

ADJUSTMENT ........................................................ 9

TROUBLESHOOTING GUIDE .............................. 10

PRINTED CIRCUIT BOARD................................... 14

EXPLODED VIEW...................................................16

REPLACEMENT PARTS LIST ...............................18

SCHEMATIC DIAGRAM......................................... 20

MODE

POWER ON (NORMAL)

STAND-BY

SUSPEND

DPM OFF

POWER S/W OFF

H/V SYNC

ON/ON
OFF/ON
ON/OFF

OFF

-

POWER CONSUMPTION

less than 25 W

less than 1 W

less than 1 W
less than 1 W
less than 1 W

LED COLOR

GREEN
AMBER
AMBER
AMBER

OFF

VIDEO

ACTIVE

OFF
OFF
OFF

-

- 3 -

WARNING FOR THE SAFETY-RELATED COMPONENT.

• There are some special components used in LCD
monitor that are important for safety. These parts are

marked on the schematic diagram and the
replacement parts list. It is essential that these critical

parts should be replaced with the manufacturer’s
specified parts to prevent electric shock, fire or other
hazard.

• Do not modify original design without obtaining written
permission from manufacturer or you will void the
original parts and labor guarantee.

TAKE CARE DURING HANDLING THE LCD MODULE
WITH BACKLIGHT UNIT.

• Must mount the module using mounting holes arranged
in four corners.

• Do not press on the panel, edge of the frame strongly
or electric shock as this will result in damage to the
screen.

• Do not scratch or press on the panel with any sharp
objects, such as pencil or pen as this may result in
damage to the panel.

• Protect the module from the ESD as it may damage the
electronic circuit (C-MOS).

• Make certain that treatment person’s body are
grounded through wrist band.

• Do not leave the module in high temperature and in
areas of high humidity for a long time.

• The module not be exposed to the direct sunlight.

• Avoid contact with water as it may a short circuit within
the module.

• If the surface of panel become dirty, please wipe it off
with a softmaterial. (Cleaning with a dirty or rough cloth
may damage the panel.)

WARNING

BE CAREFUL ELECTRIC SHOCK !

• If you want to replace with the new backlight (CCFL) or
inverter circuit, must disconnect the AC adapter
because high voltage appears at inverter circuit about
650Vrms.

• Handle with care wires or connectors of the inverter
circuit. If the wires are pressed cause short and may
burn or take fire.

PRECAUTION

CAUTION

Please use only a plastic screwdriver to protect yourself
from shock hazard during service operation.

TIMING CHART

- 4 -

VIDEO

SYNC

B

D

C

F

E

A

H / V

H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)

Sync

Polarity

+

–
–

+

–
–
–
–
–
–
–
–

+
+
+
+
+
+
+
+

–
–
–
–
–
–

+
+

Dot

Clock

25.175

28.322

25.175

30.24

31.5

31.5

36.0

40.0

50.0

49.5

57.2832

65

75

78.75

Frequency

31.468 KHz

70.0 Hz

31.468 KHz

70.0 Hz

31.469 KHz

60.0 Hz

35.00 KHz

66.67 Hz

37.861 KHz

72.8 Hz

37.50 KHz

75.0 Hz

35.156KHz

56.25 Hz

37.879 KHz

60.3 Hz

48.077 KHz

72.188 Hz

46.875 KHz

75.0 Hz

49.725 KHz

74.55 Hz

48.363 KHz

60.0 Hz

56.476 KHz

70.0 Hz

60.023 KHz

75.0 Hz

Resolution

640 x 350

720 x 400

640 x 480

640 x 480

640 x 480

640 x 480

800 x 600

800 x 600

800 x 600

800 x 600

832 x 624

1024 x 768

1024 x 768

1024 x 768

Total

Period

( E )

800
449
900
449
800
525
864
525
832
520
840
500

1024

625

1056

628

1040

666

1056

625

1152

667

1344

806

1328

806

1312

800

Video

Active

Time ( A )

640
350
720
400
640
480
640
480
640
480
640
480
800
600
800
600
800
600
800
600
832
624

1024

768

1024

768

1024

768

Blanking

Time

( B )

160

99

180

49

160

45

224

45

192

40

200

20

224

25

256

28

240

66

256

25

320

43

320

38

304

38

288

32

Sync

Duration

( D )

96

2

108

2

96

2

64

3

40

3

64

3

72

2

128

4

120

6

80

3

64

3

136

6

136

6

96

3

Back

Porch

( F )

48
60
55
34
48
33
96
39

128

28

120

16

128

22
88
23
64
23

160

21

224

39

160

29

144

29

176

28

Front

Porch

( C )

16
37
17
13
16
10
64

3

24

9

16

1

24

1

40

1
56
37
16

1
32

1
24

3
24

3
16

1

MODE

1

2

3

4

5

6

7

8

9

10

11

12

13

14

(MAC)

(TEXT)

OPERATING INSTRUCTIONS

- 5 -

FRONT VIEW

REAR VIEW

Front Control Panel

MENU

SET/AUTO

LightView

-

+

See front control panel

Power Connector

D-Sub Signal
Connector

2

15

34

1. Power Button

Use this button to turn the display on or off.

2. Power Indicator

This Indicator lights up green when the display operates

normally. If the display is in DPM (Energy Saving) mode, this

indicator color changes to amber.

3. MENU Button

Use this button to enter or exit the On Screen Display.

OSD LOCKED/UNLOCKED

This function allows you to lock the
current control settings, so that they
cannot be inadvertently changed.
Press and hold the MENU button for 5
seconds. The message "OSD LOCKED" should appear.
You can unlock the OSD controls at any time by pushing the

MENU button for 5 seconds. The message "OSD
UNLOCKED" should appear.

4. -, +

Buttons

Use these buttons to select or
adjust functions in the On
Screen Display.

-, +

Button

LightView hot key

For more information, refer to page A13

5. SET/AUTO Button

Use this button to enter a selection in the On Screen Display.

AUTO IMAGE ADJUSTMENT

When adjusting your display settings, always press the
SET/AUTO button before entering the On Screen
Display(OSD). This will automatically adjust your display
image to the ideal settings for the current screen resolution
size (display mode).The best display mode is
15 inch monitor : 1024x768
17 inch monitor : 1280x1024

OSD LOCKED

OSD UNLOCKED

LIGHT VIEW

1 2

DAY TEXT

+

MENU

-

PROCESSING AUTO
IMAGE ADJUSTMENT

SET

- 6 -

M

MST9151

J702

J707

Main Board

Power Board

Control Board

J1

J706

WIRING DIAGRAM

- 7 -

BLOCK DIAGRAM

LVDS

(Low Voltage

Differential Signaling)

Micom

MTV312

LCD Module

differential

R,G,B

5V

3.3V

5V

Diode

KDS184

3.3V

Reg.

including

MST9011B

(ADC/LVDS/SCALER )

2.5V

2.5V

3.3V

5V

R,G,B, H/V Sync

LIPS

12V

3.3V

D-SUB

AC Input