LG FPD1530 Service Manual

AUTO/SETOSD

COLOR MONIT OR

SER VICE MANUAL

KRSVM000063305

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

CHASSIS NO. : CL-32 F ACTORY MODEL: LG508K

MODEL: FPD1530

To apply the LG Philips Module.

CONTENTS

To apply the LG Philips Module

SPECIFICATIONS ..........................................................A-2

PRECAUTIONS ..............................................................A-3

TIMING CHART ............................................................. A-4

OPERATING INSTRUCTIONS .................................... A-5

WIRING DIAGRAM ....................................................... A-6

BLOCK DIAGRAM ......................................................... A-7

DESCRIPTION OF BLOCK DIAGRAM ....................... A-8

ADJUSTMENT ............................................................... A-9

TROUBLESHOOTING GUIDE ................................... A-10

PRINTED CIRCUIT BOARD.........................................A-14

EXPLODED VIEW.........................................................A-15

REPLACEMENT PARTS LIST ....................................A-17

PIN CONFIGURATION.................................................A-20

SCHEMATIC DIAGRAM ............................................. A-22

To apply the Toshiba Module

SPECIFICATIONS ..........................................................B-2

PRECAUTIONS ..............................................................B-3

TIMING CHART ............................................................. B-4

OPERATING INSTRUCTIONS .................................... B-5

WIRING DIAGRAM ....................................................... B-6

BLOCK DIAGRAM ......................................................... B-7

DESCRIPTION OF BLOCK DIAGRAM ....................... B-8

ADJUSTMENT ............................................................... B-9

TROUBLESHOOTING GUIDE ................................... B-10

PRINTED CIRCUIT BOARD.........................................B-14

EXPLODED VIEW.........................................................B-15

REPLACEMENT PARTS LIST ....................................B-17

PIN CONFIGURATION.................................................B-20

SCHEMATIC DIAGRAM ............................................. B-21

SPECIFICATIONS

A-2

1. LCD CHARACTERISTICS

Type : TFT XGA LCD Module Size : 352.0(H) x 263.5(V) x 14.0(T) 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 : Top/Bottom edge side 2CCFL Electrical Interface : LVDS interface

2. OPTICAL CHARACTERISTICS

2-1. Viewing Angle by Contrast Ratio

≥

10 Left : 55° min. Right : 55° min. Top : 40° min. Bottom : 40° min.

2-2. Luminance

:

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

2-3. Contrast Ratio :250(min.), 350(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 ~ 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)

(Ambient)

5-2. Relative Humidity : 10%~80%

(Non-condensing)

5-3. MTBF : 50,000 Hours (Min.)

Lamp Life : 40,000 Hours (Min.)

6. DIMENSIONS (with TILT/SWIVEL)

Width : 356mm (14.01'') Depth : 151.7mm (5.97'') Height : 359.8mm (14.16'')

7. WEIGHT (with TILT/SWIVEL)

Net. Weight : 4.7kg (10.36 lbs) Gross Weight : 5.8kg (12.79 lbs)

MODE

POWER ON (NORMAL)

STAND-BY

SUSPEND

DPMS OFF

H/V SYNC

ON/ON OFF/ON ON/OFF

-

POWER CONSUMPTION

less than 30 W

less than 2 W less than 2 W

less than 2 W

LED COLOR

GREEN AMBER AMBER AMBER

VIDEO

ACTIVE

OFF OFF

-

A-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

A-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

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

800 x 600

832 x 624

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)

A-5

OPERATING INSTRUCTIONS

FRONT VIEW REAR VIEW

Front Control Panel

1. Power ON/OFF Button

Use this button to turn the monitor on or off.

2. Power Indicator

This indicator lights up green when the monitor operates normally; in DPMS (Energy Saving) mode,

-stand-by, suspend, or power off mode - its color changes to amber.

3. Button

Use these buttons to choose or adjust items in the on screen display.

4.

AUTO/SET Button

Use this button to enter a selection in the on screen display.

5. OSD Button

Use this button to enter or exit the on screen display.

AUTO/SETOSD

OSD Button

AUTO/SET Button

Power Button

Power Indicator

D-Sub Signal Connector

Power Connector

AUTO/SETOSD

1

5

4

3

2

* AUTO adjustment function

Touch the AUTO/SET button before using OSD menu. This button is for the automatic adjustment of the screen position, clock and phase.

Note: Some signal from some graphics boards may not function properly. If the results are unsatisfactory, adjust your monitor’s Position, Clock and Phase manually.

PROCESSING

AUTO CONFIGURATION

Buttons

A-6

WIRING DIAGRAM

J706

J702

J705

CN2

CN3

J1

Connector Ass’y : P/N: 6631T11016C

Connector Ass’y : P/N: 6631T20015K

A-7

BLOCK DIAGRAM

DESCRIPTION OF BLOCK DIAGRAM

A-8

1. Scaler One chip IC(GMZAN-2, U201)

GMZAN-2 (U201) is one chip IC which it supports four internal function blocks of Video Amp, PLL, A/D converter and Video processor. Video signal (0.7Vp.p) clamped through C207, 208, 209 with matching IC’s proper cut off voltage. This signal is processed as a proper 8 bit digital signal by U201’s amplifying, phase locking, A/D converting,

and scaling operations. U201 outputs 24bit RGB data and control signals(Clock, Horizontal and Vertical sync, and Data Enable) as LVDS IC’s input signals.

2. System Controller (Microprocessor) Circuit

1) Microprocessor (U501) distinguishes polarity and frequency by calculating horizontal and vertical sync input

from signal source.

2) Microprocessor (U501) carries out power control by sending power-down trigger signal to each IC.

3) Microprocessor (U501) communicates with EEPROM (U502), and GMZAN-2 (U201)

through IIC(2 lines) or 4 bit bus line. It makes all devices operated properly.

4) Microprocessor (U501) let User adjust screen by OSD function.

3. LVDS(Low Voltage Differential Signal, U411)

LVDS transmitter (U411) delivers digital signal to the receiver inside LCD module by method of abstraction. The abstracted signals are pairs of RIN0+-, RIN1+-, RIN2+-, RIN3+-, and RCLKIN+- of which voltage swing is 0.5V each. When SHUTON pin’s input is High, transmitter goes to power down mode.

4. DC/DC block

This block is composed of regulators which supplies 2.5V and 3.3V. Each regulator’s source power is 5VR from LIPS(LCD Inverter and Power Supply) block. U806 supplies 2.5VD and 2.5VA and U802 supplies 3.3VD, 3.3V_AD, and 3.3V_PL powers to GMZAN-2’s internal PLL, ADC, Pre-amp, and scaler by dropping down 5VR. U805 supplies MODPWR-3.3V for LCD module’s operation by dropping down 5VR.

5. LIPS Block (LCD Inverter and Power Supply)

This block supplies DC voltages of 5VS to interface board and 12V to inverter by converting AC input voltage of 100~240Vac. Converting method is SMPS(Switching Mode Power Supply). Inverter on/off signal from microprocessor makes inverter turned on or off . DIMADJ signal from microprocessor does inverter’s current adjustment for Brightness control.

A-9

ADJUSTMENT

All adjustment are thoroughly checked and corrected when the monitor leaves the factory, but sometimes several minor adjustment may be required. Adjustment should be following procedure and after warming up for a minimum of 10 minutes. Alignment appliances and tools.

- IBM Compatible PC

- Programmable Signal Generator. (eg. VG-819 made by Astrodesign Co.)

- E(E)PROM with each mode data saved.

- Alignment Adapter and Software.

1. Adjustment for Factory Preset Mode

1) Run alignment program for LG508K on the IBM compatible PC.

2) Select EEPROM All Init. command and Enter.

3) Display cross hatch pattern at Mode 1.

4) Select EDID WRITE[A∅] [A6]command and Enter.

2. Adjustment for White Balance

1) Display color 0,0 pattern at Mode 13.

2) Set External Bright to MAX position and Contrast to MAX Position.

3) Select PRESET START → BIAS CAL command and Enter.

4) No attempt to manually adjust, BIAS data is automatically adjusted and saved to the EEPROM.

5) Display color 15,0 pattern at Mode 13.

6) Select DRIVE CAL command and Enter.

7) Color 1 (9300K) and Color 2 (6500K) are automatically adjusted and saved to the EEPROM.

8) Select PRESET EXIT command and Enter.

Figure 1. Cable Connection

220

IBM Compatible PC

PARALLEL PORT

Power inlet (required)

Video Signal Generator

Power LED

ST Switch

Power Select Switch (110V/220V)

Control Line

Not used

RS232C

PARALLEL

V-SYNC

POWER

ST

VGS

MONITOR

E

V-Sync On/Off Switch (Switch must be ON.)

F

A

B

C

15

10 5

5

69

1

14

13

25

6

5V

4.7K

74LS06

OFF ON

OFF

ON

11

A-10

TROUBLESHOOTING GUIDE

1. NO POWER

CHECK U803.

CHECK

U802 PIN 1

VOLTAGE

(5V) ?

NO

NO POWER

(POWER INDICATOR OFF)

CHECK POWER

BOARD, AND FIND

OUT A SHORT POINT

AS OPENING

EACH POWER LINE

CHECK J705

VOLTAGE

PIN5, PIN6 (5V)?

NO

CHECK 5VS LINE

(OPEN CHECK)

CHECK

U805 PIN 1 Voltage

(5V) ?

NO

CHECK IIC LINE

CONNECTION

(U501, U502)

CHECK U201 VCC,

XTAL, RESET

IS U201

PIN12 (3.3V)

VOLTAGE REPEATED

AS PULSE

SHAPE ?

NO

YES

NO PROBLEM

NO

CHECK KEY CONTROL

CONNECTOR ROUTINE

A-11

2. NO RASTER (OSD IS NOT DISPLAYED) – LIPS

CHECK MICOM INV

ON/OFF PORT.

J705 PIN2

5V?

NO

NO RASTER

(OSD IS NOT DISPLAYED)

CHECK LIPS

J705

PIN5, PIN 6

5V?

NO

1. CONFIRM BRIGHTNESS OSD CONTRL STATE.

2. CHECK MICOM DIM-ADJ PORT

J705 PIN1

5V?

NO

LIPS

CHECK

PULSE AS

CONTACTING SCOPE

PROBE TO CAUTION LABEL.

(CONTACT PROBE TO

CAUTION LABEL.

CAN YOU SEE PULSE

AT YOUR

SCOPE?

NO

REPLACE CCFL LAMP

IN THE LCD MODULE

YES

A-12

1. CHECK PIN141, 142 SOLDERING CONDITION

2. CHECK X201

3. TROUBLE IN U201

U201

POWER PINS

3.3V?

NO

CHECK U802, U806

U201 PIN141, 142

OSCILLATE AS 20MHZ?

CHECK CONNECTION LINE

FROM U201 TO U401

NO

TROUBLE IN CABLE

OR LCD MODULE

CHECK U805

U401 PIN1

3.3V?

NO

YES

3. NO RASTER (OSD IS NOT DISPLAYED) – gmZAN2

NO RASTER

(OSD IS NOT DISPLAYED)

U401

PIN31 IS 65MHz CLOCK?

PIN27 IS 48KHz H-SYNC?

PIN28 IS 60Hz V-SYNC?

PIN30 IS 48KHz DEN? IS PULSE APPEARED

AT SIGNAL PINS?

NO

A-13

CHECK U802, U806

U201

POWER PIN

3.3V?

NO

1. CHECK PC

2. CHECK SIGNAL CABLE & D-SUB CONNECTOR LINE

CHECK

R,G,B INPUT?

U201 PIN 87, 91, 95

NO

CHECK H-SYNC LINE

(D-SUB→U701→MICOM

→U201 PIN150)

CHECK

H-SYNC INPUT

U201 PIN 150?

NO

YES

NO RASTER

(OSD IS DISPLAYED)

4. NO RASTER (OSD IS DISPLAYED) – gmZAN2

PRINTED CIRCUIT BOARD

A-14

C514

U502

R561

R807

L701

R537 R533 R534

R571

R581

C503 C502

R529

R525

R560

R570

R580

U805

C820

C816

C706

C813

1

J702

X201

C832

L710

J706

R541

R726

C713

Q506

Q505

R532

Q502

C516

R510

R530

R531

R528

R511

C835

R805

C818

L802

C819

L401

R403

R404

C403

C410

C409 C408 C407 C406

C249

C248

C224

C223

C210 C829

L804

R712

R713

R715

R551

R727

U701

R723

R724

U702

R725 C703

ZD501

R539

Q501

R535

C501

C511

R512

R515

R518

R540

U802

C401 C402

C817

LPL PANNEL

R401C404

C243

C242

160

150

C212

C235

R206

C215 C828

C270

120

R709

R708

C708 C709

C710

C711

L704

L705

L702

L703

R710

R711

R714

C712

R705

R716R733

R722

D707

D708

X501

Q503

R536C512 C513

R517

R516

R526

C505

U807

C227 C234

C237 C238

C218 C231

C233 C229

C241

C245 C246

C247 C217

C244

U401

C405

BA205

C236

C206

10

5

110

R202

C214

L803

R734

C707

Q701

ZD701

C731

D703 D704 D705

R501

R502

R503

R538

R523

R524

R527

C506

C507

U806

C802

C228

C239 C240

C219

C221

C222

BA202

C226

BA206

C232

L201

20

100

R201

C821

C827

R205

C824

R717 R707

ZD702

R504

R505

R506

R507

R508

R509

R519

R520

R521

C508

C801

L805

R207

C261

C225

C230 L204

C262

C205

30

90

C258

C259

C269

R720

R513 C504

L706

L707

C715

C509

U501

RA502RA501

C515

R813

R522

C826

C825

C831

BA201

BA203

C250

L203

BA204

C204

L202

40

U201

50

60

70

80

C201

C202

C203

C254

C255

C256

C257

D701

D702

D706

R203 R204

R208

R209

R210

C207

C208

C209

R701 R703R706

C717

L708 C716

J705

L801

P/N :6870T534A12

MODEL:LB500K

DATE :2002.07.20

C220

C271

C211

C216

L205

J703

1. MAIN BOARD (Component Side)

A-15

EXPLODED VIEW

1

2

10

11

6

5

9

7

8

3

a

4

A-16

EXPLODED VIEW PARTS LIST

Ref. No.

1 2 3 4 5

6

7 8

9 10 11

a

Part No.

3091TKL041E 6304FLP024A 3809TKL027E

3043TKK078M

4951TKS091F 6634B00051A

or 6634B00053A

3313TL5056A

4950TKK424D

6631T11016C

6871TST245E

6850TD9001G

332-113E

Description

CABINET ASSEMBLY, LG508J G/WAY LOCAL SUB_MATERIAL C/SKD LCD(LIQUID CRYSTAL DISPLAY) LM150X07-B4 LG PHILPS TFT COLOR 15.0 INCH XGA BACK COVER ASSEMBLY, LG508J 3808TKL032A MX LOCAL TILT SWIVEL ASSEMBLYLG508J . MX, SEMI-CKD METAL ASSEMBLY, FRAME MAIN,LG508K(LPL) ADAPTER,AC-DC, PWI1502LG 5V/12A 1A/1A LIPS FOR K-CHASSIS ADAPTER,AC-DC, ADP-30EP 5V/12A 1A/1A LIPS FOR K-CHASSIS MAIN TOTAL ASSEMBLY LG508K G/WAY CL-32 METAL REAR LB508J C/SKD CONNECTOR ASSEMBLY, 20P H-H 100MM UL20276 I/FACE CABLE LB500K PWB(PCB) ASSEMBLY,SUB, LG508J CONTROL TOTAL G/WAY CABLE,D-SUB, UL 2990-9C(7.5) DT 1870MM BLACK(9930) , DM SCREW,DRAWING, D3.0 L10.0 MSWR/BK