Samsung 2493HM - SyncMaster - 24" LCD Monitor Service Manual Download Page 36

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7-6

7. Schematic Diagram

7-2-4 Power, Speaker out, Headphone out Block

- This Document can not be used without Samsung’s authorization.

2493HM DELETE

+1.2V

2493HM DELETE

XREF

COMP

MGND1

MP1583DN

IC924

SW
GND

CDS3C05GTA

R584

+5.8V_AMP

D504

1/10W

100ohm

1nF

C584

100nF

C648

16V

1nF
50V

50V

1Kohm

R539

XREF

C583

C582
1nF

50V

R542

R500
4.7Kohm

1Kohm

C536

1.5nF

1Kohm

R540

XREF

+5V_IN

XREF

1/10W

22Kohm

R591

+3.3V_LIVE

100uF
16V

C649

100ohm

R501

R541

+5V_IN

1/10W

10Kohm

KTC3875S-Y

Q507

SPEC_STRESS_1

+5V_PANEL

1
2
3
4

+5V_IN

10Kohm

R537

1/10W

R3016

10Kohm

L903

10uH

+5.8V_AMP

+18V_IN

100Kohm

R744

1nF

C581

50V

C657
100nF

100nF

C658

16V

U2547
47uF

D523

MMBD4148SE

10Kohm

R538

R712

10Kohm

3.3UH

XREF

ZD500

BZX84C5V6LT1

L500

R530

0ohm

1/10W

SPEC_STRESS_1

XREF

Q502

100nF

C660

+5V_IN

SPEC_STRESS_1

KTC3875S-Y

4.7uF

C723

25V

50V

C724

2.2nF

50V

C725

10nF

R746

10Kohm

10V

C722

10uF

L501
3.3UH

R581

1/10W

22Kohm

100ohm

C604

100nF

1/10W

R590

HP_L

C574

25V

22nF

XREF

100nF

C653

100nF

C659

BLM41P600S

FT604

16V

100uF

C605

XREF

470uF

C650

C655

+2.5V_M

100nF

25V

XREF

R621

C575

22nF

120Kohm

1/10W

22uF

C560

35V

+2.5V_M

100nF

C662

VCC_1

VCC_2

100nF

C661

NC_5

OUT1

OUT1_

OUT2

OUT2_

PW_GND_1

PW_GND_2

PW_GND_3

PW_GND_4

SGND

ST_BY

IN1

IN2_

MUTE

NC_1

3
4

NC_2

NC_3

NC_4

IC500

TDA7266D

XREF

SPEC_STRESS_1

F601

452 003MRL(LEAD-FREE)

16V

C558
47uF

C580
100nF
16V

16V

100uF

C550

25V

1uF

C579

10V

C556

10uF

C557

4
5
6

7
8
9

SHQ9085-01-010

CN501

C656
100nF

KDS184

D522

HP_R

100nF

C507

16V

SMAW200-05P

CN601

1.5nF

C535

D505
CDS3C05GTA

R622
10Kohm

2SC2412K-Q

Q701

SPEC_STRESS_1

XREF

100nF

C654

+18V_IN

C506
100nF

16V

14
15
16

2
3
4
5
6
7
8
9

SMAW200-16P

CN600

10
11
12
13

L701

36Kohm

R747

1/10W

SS24

D701

FSEL

MGND1

15Kohm

R745

1/10W

MP3213DH

IC702

COMP

GND

1uF

25V

+5V_IN

R624

C578

MGND1

+5V_PANEL

20Kohm

GND

COMP

MGND1

IC602

MP1583DN

+5.8V_AMP

LF25CDT

IC113

GND

OUT

100nF

C652

+5.8V_AMP

100nF

C651

FT605

BLM41P600S

XREF

+5V_AUDIO

C663

+2.5V_M

100nF

SP_ALIN_A

SP_ARIN_A

SPK_L-

SPK_L+

SPK_R-

0.3mm

DEFAULT_NET_TYPE

SPK_R+

SP_ARIN

SP_ALIN

SP_ARIN_A

SP_ALIN_A

AMP_EN

HPDR

HPDL

HP_SENSE

SP_ARIN_A

SP_ALIN_A

PWR_OFF_MUTE

AUDIO_MUTE

PWR_OFF_MUTE

Power

Speaker Out

Headphone Out

Summary of Contents for 2493HM - SyncMaster - 24" LCD Monitor

Page 1: ... LCD Monitor Contents 2493HM Refer to the service manual in the GSPN see the rear cover for the more information 1 Precautions 2 Product specifications 3 Disassembly and Reassemble 4 Troubleshooting 5 Exploded View Part List 6 Wiring Diagram 7 Schematic Diagram ...

Page 2: ... 1 4 1 Troubleshooting 4 1 4 2 When the Power Does Not Turn On 4 2 4 3 When a blank screen is displayed Analog 4 4 4 4 When a Blank Screen Is Displayed DIGITAL 4 7 4 5 Error Examples and Actions 4 10 4 6 Adjustment 4 11 5 Exploded View Part List 5 1 5 1 Exploded View 5 1 5 2 Parts List 5 3 6 Wiring Diagram 6 1 6 1 Wiring Diagram Main Board 6 1 6 2 Wiring Diagram Main 6 2 6 3 Wiring Diagram SMPS 6 ...

Page 3: ...urope samsungportal com China http china samsungportal com Asia http asia samsungportal com Mideast Africa http mea samsungportal com This Service Manual is a property of Samsung Electronics Co Ltd Any unauthorized use of Manual can be punished under applicable International and or domestic law 2007 Samsung Electronics Co Ltd All rights reserved Printed in Korea P N BN82 00292A 00 ...

Page 4: ...handling them 3 1 Disassembly Cautions 1 Turn the monitor off before beginning the disassembly process 2 Disassemble the monitor carefully as directed in the following procedures 3 When disassembling the monitor do not use any metal tools except for the provided jig Part Description Picture Description Screws Stand 1 Place the monitor down onto a table covered by a soft cloth and remove the 4 scre...

Page 5: ...tion Picture Description Screws Inverter Cable 3 Seperate the Inverter Cable from the SMPS ASSY CHASSIS 4 Remove the LVDS cable 5 Remove the cable from the SHIELD COVER 6 Remove the cable 7 Remove the hexagonal screws from the bottom of the Shield ...

Page 6: ... and the Speaker Cable from the Main Board Speaker 9 Remove the four 4 screws from both sides of the speakers Decoration 10 Remove the Panel and Chassis separate the Speaker and Function wire from the Decoration and then separate the Decoration Main Board SMPS 11 Remove the 9 screws lift the board and seperate the cable ...

Page 7: ...cription Screws Back Cover 12 Assemble the product in the reverse order of the disassembly When closing the cover close the lower side of the cover first Otherwise the product may be damaged Reassembly procedures are in the reverse order of disassembly procedures ...

Page 8: ...5 1 5 Exploded View Part List 5 Exploded View Part List 5 1 LS24KIERBQ EDC Exploded View T0003 M0112 M0130 M0175 T0175 T0056 M0215 M0014 M0146 T0764 M0006 M0215 M0013 M0003 ...

Page 9: ... COVER DECORATION LS24KIE ABS HB NATURE S 1 S N A T0175 BN96 06426A ASSY SPEAKER P 8ohm kilimanzaro 2W 4p 1w 1 S A M0215 BN07 00399A LCD PANEL LTM240CT01 1 S A T0764 BN44 00195A SMPS LCD MONITOR 245B2 DYREL AC DC 85 67 1 S A M0146 BN63 04051A SHIELD PCB SMPS 2493HM SPTE T0 3 1 S N A M0014 BN94 01549A ASSY PCB MAIN LS24KIEEFV XAA 2493HM 1 S A M0006 BN96 06454A ASSY SHIELD P COVER Kilimanzaro 24 SEC...

Page 10: ...15mm 3m 1 S N A 3 T0069 AA63 60131A SPACER FELT SVP403J FELT BLK T0 5 5 S N A 3 M0006 BN63 04040A COVER REAR 2493HM HIPS HB BK26 1 S N A 0 1 M0216 BN90 01427E ASSY STAND LS24KI USB STAND BLK SPRAY 1 S N A 2 M0003 BN96 06600C ASSY STAND P 2493HM ABS HB BK26_SPRAY US 1 S A 3 T0081 6001 001547 SCREW MACHINE BH M4 L10 5 ZPC BLK SW 4 S A 3 M0081 6003 000275 SCREW TAPTITE BH B M3 L10 ZPC BLK S 4 S N A 3...

Page 11: ...LS27HUB HUBBLE 27 1 S A 2 T0764 BN44 00195A SMPS LCD MONITOR 245B2 DYREL AC DC 85 67 1 S A 2 M0146 BN63 04051A SHIELD PCB SMPS 2493HM SPTE T0 3 1 S N A 2 M0014 BN94 01549A ASSY PCB MAIN LS24KIEEFV XAA 2493HM 1 S A 3 T0245 0202 001608 SOLDER WIRE FLUX LFC7 107 D0 8 99 3Sn 0 0 025 S N A 3 CN102 3701 001173 CONNECTOR DVI 24P 3R FEMALE ANGLE AUF 1 S A 3 CN101 3701 001219 CONNECTOR DSUB 15P 3R FEMALE A...

Page 12: ...2 1 S A 4 ZD111 0403 000258 DIODE ZENER BZX84C5V6 5 2 6V 225mW SOT 2 1 S A 4 ZD500 0403 000258 DIODE ZENER BZX84C5V6 5 2 6V 225mW SOT 2 1 S A 4 D118 0403 000579 DIODE ZENER BZX84C5V1 4 8 5 4V 200mW SOT 1 S A 4 D115 0403 001411 DIODE ZENER 5 49 5 73V 200mW SOD 323 T 1 S A 4 D133 0403 001435 DIODE ZENER QZX363C5V6 5 32 5 88V 200MW 1 S A 4 D0254 0404 001020 DIODE SCHOTTKY BAT54C 30V 200mA SOT 23 T 1 ...

Page 13: ...0 R CHIP 0ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000070 R CHIP 0ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000070 R CHIP 0ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000070 R CHIP 0ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000070 R CHIP 0ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000070 R CHIP 0ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000070 R CHIP 0ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000070 R CHIP 0ohm 5 1 10W TP 1608...

Page 14: ...8 1 S A 4 R110 2007 000074 R CHIP 100ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000074 R CHIP 100ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000074 R CHIP 100ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000074 R CHIP 100ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000074 R CHIP 100ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000074 R CHIP 100ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000074 R CHIP 100ohm 5 1 10W TP 1608 1 S A 4 R110 ...

Page 15: ...110 2007 000084 R CHIP 4 7Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000084 R CHIP 4 7Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000084 R CHIP 4 7Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000084 R CHIP 4 7Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000084 R CHIP 4 7Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000084 R CHIP 4 7Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000084 R CHIP 4 7Kohm 5 1 10W TP 1608 1 S A 4 R110 2007...

Page 16: ...90 R CHIP 10Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000092 R CHIP 15Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000093 R CHIP 20Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000093 R CHIP 20Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000094 R CHIP 22Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000094 R CHIP 22Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000097 R CHIP 47Kohm 5 1 10W TP 1608 1 S A 4 R110 2007 000102 R CHIP 100Ko...

Page 17: ... 1 S A 4 RA401 2011 000881 R NETWORK 33ohm 5 1 16W L CHIP 8P TP 3 1 S A 4 RA402 2011 000881 R NETWORK 33ohm 5 1 16W L CHIP 8P TP 3 1 S A 4 RA403 2011 000881 R NETWORK 33ohm 5 1 16W L CHIP 8P TP 3 1 S A 4 RA404 2011 000881 R NETWORK 33ohm 5 1 16W L CHIP 8P TP 3 1 S A 4 C120 2203 000140 C CER CHIP 1 5nF 10 50V X7R 1608 1 S A 4 C120 2203 000140 C CER CHIP 1 5nF 10 50V X7R 1608 1 S A 4 C120 2203 00014...

Page 18: ...CER CHIP 100nF 10 16V X7R 1608 1 S A 4 C120 2203 005005 C CER CHIP 100nF 10 16V X7R 1608 1 S A 4 C120 2203 005005 C CER CHIP 100nF 10 16V X7R 1608 1 S A 4 C120 2203 005005 C CER CHIP 100nF 10 16V X7R 1608 1 S A 4 C120 2203 005005 C CER CHIP 100nF 10 16V X7R 1608 1 S A 4 C120 2203 005005 C CER CHIP 100nF 10 16V X7R 1608 1 S A 4 C120 2203 005005 C CER CHIP 100nF 10 16V X7R 1608 1 S A 4 C120 2203 005...

Page 19: ...5V 1608 1 S A 4 C120 2203 005065 C CER CHIP 1000nF 80 20 10V Y5V 1608 1 S A 4 C120 2203 005065 C CER CHIP 1000nF 80 20 10V Y5V 1608 1 S A 4 C120 2203 005065 C CER CHIP 1000nF 80 20 10V Y5V 1608 1 S A 4 C120 2203 005065 C CER CHIP 1000nF 80 20 10V Y5V 1608 1 S A 4 C120 2203 005065 C CER CHIP 1000nF 80 20 10V Y5V 1608 1 S A 4 C120 2203 005065 C CER CHIP 1000nF 80 20 10V Y5V 1608 1 S A 4 C120 2203 00...

Page 20: ...8 3 10 1 S A 4 C619 2402 001273 C AL SMD 220uF 20 35V WT REEL 10X10mm 1 S A 4 T0052 2703 001334 INDUCTOR SMD 1 5uH 10 2012 1 S A 4 T0052 2703 001334 INDUCTOR SMD 1 5uH 10 2012 1 S A 4 T0052 2703 001334 INDUCTOR SMD 1 5uH 10 2012 1 S A 4 T0052 2703 001778 INDUCTOR SMD 3 3uH 20 3225 1 S A 4 T0052 2703 001778 INDUCTOR SMD 3 3uH 20 3225 1 S A 4 T0052 2703 001778 INDUCTOR SMD 3 3uH 20 3225 1 S A 4 T005...

Page 21: ...S A 4 R110 2007 000113 R CHIP 33ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000113 R CHIP 33ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000113 R CHIP 33ohm 5 1 10W TP 1608 1 S A 4 R110 2007 000211 R CHIP 1 1Kohm 5 1 10W TP 1608 1 S A 4 C120 2203 000888 C CER CHIP 4 7nF 10 50V X7R 1608 1 S A 4 C120 2203 000888 C CER CHIP 4 7nF 10 50V X7R 1608 1 S A 4 C120 2203 000888 C CER CHIP 4 7nF 10 50V X7R 1608 1 S A 4 C1...

Page 22: ...00397C CBF INTERFACE USB SPL 07 4P 4P 2725 USB2 1 S A 2 M0254 BN96 06445E ASSY ACCESSORY CABLE MANUAL LS24KIERBQ E 1 S A 3 BH68 70448A CARD 01 TFT LCD SRC RUSSIA S W 120 W210 1 S N A 3 T0268 3903 000042 CBF POWER CORD DT EU FP3 YES IEC320 C13 1 S A 3 T0524 6902 000110 BAG PE LDPE T0 05 W250 L400 TRP 28 2 1 S N A 3 T0076 BH68 00633B MANUAL FLYER 02 WARRANTY CARD comm Samsu 1 S N A 3 BN68 00907A MAN...

Page 23: ...5 16 5 Exploded View Part List Memo ...

Page 24: ...onal Standards Institute ANSI C101 1 Leakage Current for Appliances and Underwriters Laboratories UL Publication UL1410 59 7 With the unit completely reassembled plug the AC line cord directly into a 120V AC outlet With the unit s AC switch first in the ON position and then OFF measure the current between a known earth ground metal water pipe conduit etc and all exposed metal parts including metal...

Page 25: ...trument s ground lead last 1 3 Static Electricity Precautions Some semiconductor solid state devices can be easily damaged by static electricity Such components are commonly called Electrostatically Sensitive Devices ESD Examples of typical ESD are integrated circuits and some field effect transistors The following techniques will reduce the incidence of component damage caused by static electrici...

Page 26: ...to turn the power off and unplug the power cord from the outlet before repositioning the product Also check the antenna cable or the external connectors if they are fully unplugged Damage to the cord may cause fire or electric shock Keep the antenna far away from any high voltage cables and install it firmly Contact with the highvoltage cable or the antenna falling over may cause fire or electric ...

Page 27: ...1 4 1 Precautions Memo ...

Page 28: ... Hz 75 Hz Maximum Resolution Horizontal 1920 Pixels Vertical 1200 Pxels Input Signal PC DVI HDMI Input Sync Signal Seperate H V sync Composite automatic synchronization without external switch Level TTL level V high 2 0V V low 0 8V Maximum Pixel Clock Rate 164 MHz Active Display Horizontal Vertical 518 4 H x 324 0 V mm AC Power Voltage Frequency AC 90 264V Volts 60 50Hz Power Consumption Less than...

Page 29: ...Response Time 5ms 5ms Input Source Analog Digital HDMI Analog Digital Magic Color O O Magic Pivot O O Magictune Premium Premium Gamma 3 Step Mode1 Mode2 Mode3 3 Step Mode1 Mode2 Mode3 MagicBright 7 steps Text Internet Game Sports Movie Dynamic CR Custom 7 steps Text Internet Game Sports Movie Dynamic CR Custom Color Tone 4 Step Cool Normal Warm Custom 4 Step Cool Normal Warm Custom ...

Page 30: ... BH68 01387A Samsung Electronics Service center Warranty Card Not available in all locations BH68 00344C User s Guide Monitor Driver Natural Color software MagicTune software BN59 00660A D Sub 15 Pin Cable Shipped as assembled with the set BN39 00244B Power Cord 3903 000085 DVI D Cable BN39 00246F ...

Page 31: ...2 4 2 Product specifications Memo ...

Page 32: ... For DDC 24C02 For DDC 24C02 For DDC 24C32 EEPROM SMPS INVERTER 24V DC DC or Regulator 5V 18V 1 2V 3 3V 5V 9V LVDS Audio Out SOUND AMP TDA 7266 SPEAKER 14 318 MHz 2 5V SCALER MST97889CDL LF SCALER MST97889CDL LF PC ANALOG 180MHz L R L C D P A N E L HDMI HEAD PHONE DDR RAM 128M Serial Flash MX25L4005M DVI HDMI DVI Switch PI3HDMI1210 PC Audio Audio Video 24C02 For DDC 24C02 For DDC 24C02 For DDC 24C...

Page 33: ...4 SDA 5 6 SCL WP 7 8 VCC 24LC02B E SN IC100 1 A0 2 A1 3 A2 D100 1 2 3 1uF C109 XREF 47nF VD C108 C754 0ohm R109 10nF 50V XREF XREF 4 7Kohm R311 1 10W TP_DDCA_SCL 1 5V_DDC_A 100ohm R113 4 1Kohm R345 3 SMAW250 04 WHT CN503 1 2 3 1 D101 1 2 5V_DDC_D 3 3V_LIVE XREF U653 C101 22pF XREF C755 10nF 50V XREF 50V 1 5nF C510 D104 1 TP_DDCA_GND 1 R511 U655 1 TP_DDCA_SDA 1 10Kohm 1 10W 75ohm R124 2 3 1 10W R71...

Page 34: ...EF 1 2 3 4 ZD111 FT104 BZX84C5V6LT1 D133 R272 0ohm XREF 0ohm R276 XREF R1229 4 7Kohm 3 4 7Kohm R147 D107 1 2 B C 1 10W R1145 0ohm 2SC2412K Q Q103 SPEC_STRESS_1 E R149 22ohm 46 D0 A 47 48 D0 A D1 5 D1 6 7 VDD33 SEL 8 D2 9 D0 4 40 VDD33 D3 A 41 42 D3 A 43 D2 A D2 A 44 45 D1 A D1 A VDD33 D3 B 32 D3 B 33 34 D2 B D2 B 35 36 D1 B 37 D1 B D0 B 38 D0 B 39 25 GND 1B2 26 1B1 27 28 OB2 29 0B1 3 D0 GND 30 31 ...

Page 35: ...26 GIN1M 27 RIN1P 28 RIN1M 29 BIN0M 3 GND 30 BIN0P 31 GIN0M 32 GIN0P 25 GIN1P 250 DI 14 251 DI 15 252 VDDP 253 HWRESET 254 XOUT 255 XIN 256 AVDD_MPLL 242 VDDC 243 GND 244 DI 8 245 DI 9 246 DI 10 247 DI 11 248 DI 12 249 DI 13 235 DI 2 236 DI 3 237 VDDP 238 DI 4 239 DI 5 24 SOGIN1 240 DI 6 241 DI 7 228 GPIOE 0 229 ICLK 23 BIN1M 230 IDE 231 IHSYNC 232 IVSYNC 233 DI 0 234 DI 1 220 LVB1M 221 LVB0P 222 ...

Page 36: ...655 2 5V_M 100nF 25V XREF R621 C575 22nF 120Kohm 1 10W 22uF C560 35V 2 5V_M 100nF C662 9 VCC_1 6 15 VCC_2 100nF C661 NC_5 18 2 OUT1 OUT1_ 5 OUT2 19 16 OUT2_ PW_GND_1 1 10 PW_GND_2 PW_GND_3 11 PW_GND_4 20 13 SGND ST_BY 7 IN1 IN2_ 14 8 MUTE NC_1 3 4 NC_2 12 NC_3 17 NC_4 IC500 TDA7266D XREF XREF SPEC_STRESS_1 F601 452 003MRL LEAD FREE 16V C558 47uF 9V C580 100nF 16V 16V 100uF C550 25V 1uF C579 10V 10...

Page 37: ... display as below Resolution 1920 x 1200 H frequency 75 kHz V frequency 60 Hz If no picture appears make sure the power cord is correctly connected Check the following circuits No raster appears Function PBA Main PBA SMPS 5V develop but no screen Main PBA 13V 5V does not develop SMPS Main PBA 1 2 3 ...

Page 38: ... power Check the connection between the SMPS and the Main Board inside the monitor Check the power part of the Main Board and check if a similar symptom appears at another output terminal Diagnostics Main Board Front CN400 CN600 R391 Yes Check the SMPS Board No Is DC 5V measured at pin 15 of CN600 Is a POWER_EN signal measured at pin 16 of CN600 Check the POWER_EN signal of R391 of IC300 Scaler No...

Page 39: ...4 3 4 Troubleshooting 4 2 1 Circuit Diagram and Waveform for Power Failures ...

Page 40: ...ck the signal cables and their connections Yes Check and replace related circuits if necessary No Check if X300 is oscillating normally Check if R G and B inputs are measured at R117 R120 and R121 Check the input part No Yes Check if Hsync and Vsync are measured at R106 and R109 Check the input part No Yes Check if Hsync and Vsync are measured at pins AF12 and E12 of IC300 Check the circuit around...

Page 41: ...4 5 4 Troubleshooting 4 3 1 Circuit diagrams and waveforms analog when a blank screen is displayed on the monitor ...

Page 42: ...4 6 4 Troubleshooting ...

Page 43: ...ctor of the LCD panel Diagnostics Main Board Front CN400 X300 R142 R151 Yes Check the signal cables and their connections Yes Check and replace related circuits if necessary No Check if X300 is oscillating normally Check if R G and B signals are measured at R144 R151 Check the circuit around IC300 No Yes Check if a waveform appears at R142 and R143 Check the input part No Yes Check if the output s...

Page 44: ...4 8 4 Troubleshooting 4 4 1 Circuit diagrams and waveforms DVI when a blank screen is displayed on the monitor ...

Page 45: ...4 9 4 Troubleshooting ...

Page 46: ...nce Symptoms and Actions Remarks Symptom DVI signals are not recognized Cause This error occurs because the PC cannot recognize the mode information since the DVI DDC is not input to the monitor Action Input the DVI DDC On how to input DDC refer to the training manual ...

Page 47: ...he video input 1 For the OSD Language select the language at the top 2 Press and hold the OSD Enter Source for 5 seconds 4 6 2 Firmware Download You have to complete the post operation using a MICOM Jig RS232 Jig after replacing the Main Board You can update the Micom using a MICOM Jig RS232 Jig Requirements The following devices are required for adjusting the monitor A Computer with Windows 95 98...

Page 48: ...4 12 4 Troubleshooting Entering the Micom Code 1 Run winDDC 2 Click Load File and select the latest code in the format of hex ...

Page 49: ...ting 3 Click Program Entering the EDID You can update the EDID DDC Analog DVI HDMI using the DDC Manager Jig Connect the devices as shown below MTI 2059 DDC Manager Signal Connector Connect to the Monitor D SUB DVI HDMI ...

Page 50: ...To exit from the SVC Function OSD you have to turn the power off Panel Information Software Version Checksum The SVC Function OSD consists of a 103 Horizontal x 82 Vertical Grid The SVC Function OSD consists of Panel Information the Software Version and the Micom Checksum Navigating Menus 1 Press the key to move up and press the key to change the value of a selected ...

Page 51: ... and hold the MENU key for 5 seconds The Panel Ch No increases by 1 and the Panel On Time is reset to 0 At the same time the Panel Cycle is also reset to 0 Other Functions 1 Auto Auto On Off 2 PixelShift On Off 3 Country English Korean Chinese Japanese 4 HDCP HP DVI On Off 5 HDCP HP HDMI On Off 6 HotPlug Time 5 50 Default 9 0 9sec ...

Page 52: ...ing the EDID 1 Install the Winddc exe program onto the PC 2 Click the Winddc icon 3 Select Open 4 Select Port 1 5 Open a DDC file File Name SM2493HMA ddc Analog DDC SM2493HMD ddc Digital DDC SM2493HMH ddc HDMI DDC 6 Click Next OK ...

Page 53: ...4 17 4 Troubleshooting 7 Enter the Monitor S N and press Enter Enter for Analog Digital and HDMI ...

Page 54: ...4 18 4 Troubleshooting Memo ...

Page 55: ...6 1 6 Wiring Diagram 6 Wiring Diagram 6 1 Wiring Diagram Main Board CN400 CN600 CN601 CN702 CN101 CN102 CN703 ...

Page 56: ...6 2 6 Wiring Diagram 6 2 Wiring Diagram Main CN703 CN702 ...

Page 57: ...6 3 6 Wiring Diagram 6 3 Wiring Diagram SMPS ...

Page 58: ...6 4 6 Wiring Diagram 6 4 Wiring Diagram PANEL ...

Page 59: ... delivers the LVDS signal from the Main Board to the Panel CN600 It provides 5V and 18V power from the SMPS to the Main Board Symptom No Power CN601 It provides PWM output from the Main Board to the SMPS Symptom No Power or Blank Screen CN500 Audio Input Port Symptom No Audio Output CN501 Audio Output Port Symptom No Audio Output for the Connected External Device 6 6 Cables Use Power Cable Power C...

Page 60: ...6 6 6 Wiring Diagram Memo ...

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