LG LM568E Service Manual

SPECIFICATIONS

1. LCD CHARACTERISTICS

Type : Color TFT LCD
Size : 15.0 inch (38.1cm)
Pixel Pitch : 0.297mm x 0.297mm
Electrical Interface : LVDS Interface
Color Depth : 8-bits/ 16,194,277colors
Active Video Area : 304.1mm x 228.1mm
Surface Treatment : Anti-Glare, Hard Coating (3H)
Backlight Unit : Bottom edge side 2CCFL

(Cold Cathode Fluorescent Lamp)

2. OPTICAL CHARACTERISTICS

2-1. Viewing Angle by Contrast Ratio ≥ 10

Left : 60° typ., 50° min.
Right : 60° typ., 50° min.
Top : 55° typ., 40° min.

Bottom : 45° typ., 40° min.
2-2. Luminance : 160(min), 200(typ)
2-3. Contrast Ratio : 150(min), 250(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 : 0~0.714 V
a) Color 0, 0 : 0 Vp-p
b) Color 7, 0 : 0.467 Vp-p
c) Color 15, 0 : 0.714 Vp-p

3) Input Impedance : 75 Ω

3-3. Operating Frequency

Horizontal : 31 ~ 61kHz
Vertical : 56 ~ 75Hz

4. POWER SUPPLY

4-1. Power Adaptor

Input : AC 100~240V, 50/60Hz 1.2A
Output : DC 12V 3.0A

4-2. Power Consumption

5. ENVIRONMENT

5-1. Operating Temperature: 10°C~35°C (50°F~95°F)

(Ambient)

5-2. Relative Humidity : 5%~95%

(Non-condensing)

5-3. MTBF : 40,000(Min)

6. DIMENSIONS (with TILT/SWIVEL)

Width : 389.2mm (15.32'')
Depth : 161.8mm (6.37'')
Height : 382.4mm (15.05'')

7. WEIGHT (with TILT/SWIVEL)

Net. Weight : 4.8kg (10.58 lbs)
Gross Weight : 6.8kg (14.99 lbs)

8. Audio Spec

8-1. Audio AMP

Input : 0.700Vrms
Output : 1Wrms+1Wrms
S/N : more then 40dB

8-2. Speaker

Impedance : 4

Ω

input : Max: 1.5W, Normal: 1W

MODE

POWER ON (NORMAL)

STAND-BY

SUSPEND

OFF

POWER OFF

H/V SYNC

ON/ON
OFF/ON
ON/OFF

OFF/OFF

-

POWER CONSUMPTION

less than 36 W

less than 3 W
less than 3 W

less than 3 W
less than 3 W

LED COLOR

GREEN
YELLOW
YELLOW
YELLOW

OFF

VIDEO

ACTIVE

OFF
OFF
OFF

-

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

35.156 KHz

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

(TEXT)

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

(MAC)

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

1204

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

1

523

8

7

14

9

16

17

22

21

6

11

10

2

15

18

3

13

12

20

4

MIC.
IN

AUDIO
IN

MIC.
OUT

19

EXPLODED VIEW PARTS LIST

Ref. No.

1

2
3

4

5
6
7
8

9
10
11
12
13
14
15
16
17
18
19
20
21
22
23

Part No.

3091TKL030B
3091TKL030E
6304FTS001A

3809TKL020B
3043TKK057M
3043TKK057Q
6633TZA003G
4951TKS072D
6871TST257A
6871TMT268C
6871TST256A
4951TKS077C

6631T11012N

332-068T
332-105F

6401TZZ025A
4950TKK337A
6634TBZ016A

6866TD9001F
6852TAZ006E

6852TAZ006F
5410TKK015D

381-240A

6634TFZ002A
4810TKK173A

Description

CABINET ASSEMBLY, LM568E BRAND 3090TKL029A ONLY TCO95 LABEL

-For Europe

CABINET ASSEMBLY, LM568E BRAND 3090TKL029A TCO95, SILVER SPRAY

-For Japan

LCD, LTM15C443L TOSHIBA 15.0 INCH XGA(1024 X 768) TFT COLOR W/O INVERTER
BACK COVER ASSEMBLY, LM568E 3808TKL023 ADD ADAPTOR LABEL
TILT SWIVEL ASSEMBLY, LM568E (BUILT-IN SPEAKER) SPRAY -For Europe
TILT SWIVEL ASSEMBLY, LM568E . BOTTOM(BLUE SPRAY) -For Japan
INVERTER ASSEMBLY, SAMSUNG LG1511 LB565C
METAL ASSEMBLY, "FRAME MAIN, LB568"
PWB(PCB) ASSEMBLY, SUB, LM568E SOUND TOTAL BRAND XAGC
PWB(PCB) ASSEMBLY,MAIN, LM568E ATLJC BRAND CL-18 TOTAL
PWB(PCB) ASSEMBLY, SUB, LM568E CONTROL TOTAL BRAND XAGC
METAL ASSEMBLY, "REAR FRAME, LM568(TOSHIBA)"
CONNECTOR ASSEMBLY, 20P H-H 120MM UL20276 LM568E INTERFACE,UNIXTAR
SCREW, PPB+3*10(MSWR/FZMW)
SCREW, PVS+4*10(MSWR/FZMW)
SPEAKER ASSEMBLY, LM568E T401SX154K14 SPEAKER ASSY 1W 4OHM
METAL,FIX SPEAKER (LM568E)
ADAPTER, AC-DC, ADP-36UB DELTA 12V 3.0A FOR LG
SIGNAL CABLE, UL 2990-9C(7.5) DT 1870MM GRAY(85964) LB500 DM
CORD,A/V, AUDIO UL 2851 #28-2C 1500MM QUARTZ KSD
CORD,A/V, A/V DH-1560SP-BL UL 2851 #28 1560MM GRAY(85964)
INSULATION, PVC SHEET LM568E(89483)
ADAPTER, AC, KPR-24 KAWASAKI 125V 15A BLACK -Only Japan
ADAPTER,SIGNAL, LIBERTY ENHANCE MAC 6-DIP -Only Japan
BRACKET, LB565C SUPPOTER INVERTER

EXPLODED VIEW

- 6 -

WIRING DIAGRAM

J4

CN2

CN1

J4

J10

J5

J3

Connector Ass’y P/N: 6631T11012N

(a)

(a)

(a)

(a)

(a)

(a)

(a)

(a)

- 7 -

DISASSEMBLY

(b)

(b)

(c)

(c)

(c)

(a)

MIC.

IN

AUDIO

IN

MIC.
OUT

(a)

(b)

(b)

1. TILT/SWIVEL & BACK COVER REMOVAL

(1) Remove two screws (a).
(2) Remove the Tilt/swivel.
(3) Remove four sheets.
(3) Remove four screws (b) from the Back Cover.
(4) Release six latchs (c).
(5) Remove the Back Cover.

2. REAR METAL ASS’Y REMOVAL

(1) Remove eight screws (a).
(2) Remove the Rear Metal Ass’y.

Back Cover

- 8 -

4. MAIN FRAME REMOVAL

(1) Remove eight screws (a).
(2) Remove the Main Frame.

5. LCD MODULE REMOVAL

(1) Remove four screws (a).
(2) Separate the LCD Module from the Main Frame.

LCD Module

(d)

(d)

(a)

(b)

(a)

(a)

(b)

(b)

(a)

J4

J5

J10

(a)

(a)

J3

J4

(c)

(c)

(c)

3. MAIN PCB ASS’Y & CONTROL PCB , SOUND ASS’Y,
SPEAKER ASS’Y REMOVAL

(1) Disconnect J4,J5 and J10 from the Main PCB Ass’y.
(2) Remove six screws (a).
(3) Remove the Main PCB Ass’y.
(4) Remove three screws (b).
(5) Disconnect J4 and J3 from the Sound Ass’y
(6) Remove the Sound Ass’y.
(7) Remove three screws (c).
(8) Remove the Control PCB Ass’y.
(9) Remove two screws (d).
(10)

Remove two Metal Fix.

(11)

Remove the Speaker Ass’y

(a)

(a)

(a)

(a)

(a)

(a)

(a)

(a)

(a)

(a)

(a)

(a)

- 9 -

CN2

6. INVERTER ASS’Y REMOVAL

(1) Disconnect CN2
(2) Remove two latch (a).
(3) Remove the Inverter Ass’y.

(a)

(a)