Samsung MO15E Series Service Manual

TFT-LCD MONITOR

MO15E*

Manual

SERVICE

TFT-LCD MONITOR CONTENTS

1. Precautions

2. Product Specifications

3. Disassembly & Reassembly

4. Troubleshooting

5. Exploded View & Parts List

6. Electrical Parts List

7. Block Diagram

8. Wiring Diagram

9. Schematic Diagrams

10. Panel Description

CONFIDENTIAL

1-1-1 Warnings

1. For continued safety, do not attempt to modify the
circuit board.

2. Disconnect the AC power and DC Power Jack
before servicing.

3. When the chassis is operating, semiconductor
heatsinks are potential shock hazards.

1-1-2 Servicing the LCD Monitor

1. When servicing the LCD Monitor, remove the static
charge by connecting a 10k ohm resistor in series
with an insulated wire (such as a test probe)
between the chassis and the anode lead.
(Disconnect the AC line cord from the AC outlet.)

2. It is essential that service technicians have an
accurate voltage meter available at all times. Check
the calibration of this meter periodically.

1-1-3 Fire and Shock Hazard

Before returning the monitor to the user, perform the
following safety checks:

1. Inspect each lead dress to make certain that the
leads are not pinched or that hardware is not
lodged between the chassis and other metal parts in
the monitor.

2. Inspect all protective devices such as nonmetallic
control knobs, insulating materials, cabinet backs,
adjustment and compartment covers or shields,
isolation resistor-capacitor networks, mechanical
insulators, etc.

3. Leakage Current Hot Check (Figure 1-1):

WARNING: Do not use an isolation transformer during
this test.

Use a leakage current tester or a metering system
that complies with American National Standards
Institute (ANSI C101.1, Leakage Current for

Appliances), and Underwriters Laboratories (UL
Publication UL1410, 59.7).

Figure 1-1. Leakage Current Test Circuit

4. 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 cabinets,
screwheads and control shafts. The current
measured should not exceed 0.5 milliamp. Reverse
the power-plug prongs in the AC outlet and repeat

the test.

1-1-4 Product Safety Notices

Some electrical and mechanical parts have special
safety-related characteristics which are often not
evident from visual inspection. The protection they give
may not be obtained by replacing them with
components rated for higher voltage, wattage, etc. Parts
that have special safety characteristics are identified by

on schematics and parts lists. A substitute
replacement that does not have the same safety
characteristics as the recommended replacement part
might create shock, fire and / or other hazards. Product
safety is under review continuously and new
instructions are issued whenever appropriate.

MO15E* 1-1

CONFIDENTIAL

1 Precautions

Follow these safety, servicing and ESD precautions to prevent damage and to protect against potential hazards such as
electrical shock.

1-1 Safety Precautions

DEVICE
UNDER
TEST

TEST ALL

EXPOSED METAL

SURFACES

(READING SHOULD

NOT BE ABOVE 0.5mA)

LEAKAGE
CURRENT

TESTER

2-WIRE CORD

ALSO TEST WITH

PLUG REVERSED
(USING AC ADAPTER
PLUG AS REQUIRED)

EARTH

GROUND

!

CONFIDENTIAL

2 Product Specifications

2-1 Specifications

LCD Panel TFT-LCD panel, RGB vertical stripe, normaly white, 15-Inch viewable,

0.297 mm pixel pitch

Scanning Frequency Horizontal : 31 kHz ~ 60 kHz (Automatic)

Vertical : 56 Hz ~ 75 Hz (Automatic)
Display Colors 16.2 M
Maximum Resolution Horizontal : 1024 Pixels Vertical : 768 Pixels
Input Video Signal Analog, 0.7 Vp-p ± 1% positive at 75 Ω, internally terminated
Input Sync Signal Type : Seperate H/V sync, Composite H/V, Sync-on-Green, automatic synchronization

without external switch of sync type

Level :TTL level
Maximum Pixel Clock rate 80 MHz
Active Display Horizontal/Vertical 304.1 mm / 228.1 mm
AC power voltage & Frequency AC 90 ~ 264 Volts, 60/50 Hz ~ 12 V/3 A
Power Consumption 30 W (MAX)
Dimensions / Unit Weight / incl.Carton

Unit (W x D x H) 357.5 x 184.5 x 360.6 mm (14.1 x 7.3 x 14.2 inches)
Carton (W x D x H) 440 x 363 x 145 mm (17.3 x 14.3 x 5.7 inches)

Weight (Net/Gross)
Normal Stand 2.9 kg (6.4 lbs) / 4.6 kg (10.1 lbs)
Multi Stand 2.98 kg (6.6 lbs) / 4.68 kg (10.3 lbs)

Environmental Considerations Operating Temperature : 50 °F ~ 104 °F (10 °C ~ 40 °C)

Humidity : 10 % ~ 80 %

Storage Temperature : 13 °F to 113 °F (-25 °C ~ 45 °C)

Humidity : 5 % ~ 95 %

•MO15E* complies with SWEDAC (MPR II) recommendations for reduced electromagnetic fields.

•Designs and specifications are subject to change without prior notice.

MO15E* 2-1

Item Description

1. Locate the monitor on the table
with face down.

2. Loose the snaps of Hinge cap
through the slot of Cover Rear.

3. Remove the hinge cap.

CONFIDENTIAL

MO15E* 3-1

3 Disassembly and Reassembly

This section of the service manual describes the disassembly and reassembly procedures for the
MO15E* monitors.

WARNING: This monitor contains electrostatically sensitive devices. Use caution when handling

these components.

3-1 Disassembly

Cautions:1. Disconnect the monitor from the power source before disassembly.

2. Follow these directions carefully; never use metal instruments to pry apart the cabinet.

3-1-1 Main Body Disassembly

CONFIDENTIAL

MO15E* 4-1

4 Troubleshooting

Notes: 1. Before troubleshooting, setup the PC’s display as below.

• Resolution: 1024 x 768

• H-frequency: 48 kHz

• V-frequency: 60 Hz

2. If no picture appears, make sure the power cord is correctly connected.

3. Check the following circuits.

• No raster appears: SMPS PCB, Main PCB

• 14V develop but no screen: Main PCB

• 14V does not develop: SMPS PCB

4. If you push and hold the “EXIT” button for more than 5 seconds, the monitor automatically turns back
to the factory preset.

4-1 No Power

Does proper DC 14 V appear at

Pin 1, 2 or Pin 3 of CN202?

Check SMPS.

Yes

No

Does proper DC 3.3 V appear at

Pin 4 of IC100?

Check IC100.

Check IC101, IC301, IC500 or IC602.

Yes

No

MO15E* 5-1

CONFIDENTIAL

5 Exploded View and Parts List

CONFIDENTIAL

MO15E* 6-1

- BN94-00302A ASSY PCB MAIN MO15ES SNA
CIS BH73-60304E RUBBER-SUPPORT MO15PS,CR V0,6*6*6.4,BLACK SNA
CIS BN39-00002A CBF-HARNESS -,60,BLU/WHT,-,26,- SNA
CIS BN39-00251A LEAD CONNECTOR ASSY

MO15ES,UL1571#30,UL/CSA,20P,#30,12507HS-20,12507HS-20,BK,40MM,1571#30,SJ01-01-33
CIS BN44-00066A INVERTER MO15PS,SIC581,48KHZ,14VDC,2.6MARMS,6.1MARMS,48KHZ,140*50*8.0,4LAMP
CIS BN70-00264A PLATE-BRKT GROUND MO15PS,SECC,-,T0.8,-,-,-,-,MO15PS SNA
CIS BN72-00307A PLATE-PCB MO15PS,ABS+PC,IV16,-,-,5V,-,-,- SNA
CIS6 BN63-00265A GASKET

MO15PS,CONDUCTIVE FABLIC,4MM,10MM,17MM,GRAY,71TSSK 10-4-17-13,71TSSK 10-4-17-13

SNA

CIS7 BN63-00266A GASKET

MO15PS,CONDUCTIVE FABLIC,4MM,4MM,60MM,GRAY,71TTSK 4-4-60-13,71TTSK 4-4-60-13

SNA

SH/MO+BR/GR+PCB

6001-001340 SCREW-MACHINE CH,+,M2.0,L4.5,ZPC(YEL),SWRCH18A,FP

- BN97-00094A ASSY SMD MO15ES SNA
C100 2402-001042 C-AL,SMD 100uF,20%,16V,GP,TP,6.6x6.6x5.4mm
C101 2203-005005 C-CERAMIC,CHIP 100nF,10%,16V,X7R,TP,1608
C102 2402-001042 C-AL,SMD 100uF,20%,16V,GP,TP,6.6x6.6x5.4mm
C103 2402-001042 C-AL,SMD 100uF,20%,16V,GP,TP,6.6x6.6x5.4mm
C104 2203-005005 C-CERAMIC,CHIP 100nF,10%,16V,X7R,TP,1608
C105 2203-001652 C-CERAMIC,CHIP 470nF,+80-20%,16V,Y5V,TP,1608
C106 2203-001652 C-CERAMIC,CHIP 470nF,+80-20%,16V,Y5V,TP,1608
C107 2402-001042 C-AL,SMD 100uF,20%,16V,GP,TP,6.6x6.6x5.4mm
C200 2402-001042 C-AL,SMD 100uF,20%,16V,GP,TP,6.6x6.6x5.4mm
C201 2203-000189 C-CERAMIC,CHIP 100nF,+80-20%,25V,Y5V,TP,1608,
C202 2203-000236 C-CERAMIC,CHIP 0.1nF,5%,50V,NP0,TP,1608
C203 2203-000236 C-CERAMIC,CHIP 0.1nF,5%,50V,NP0,TP,1608
C204 2203-005005 C-CERAMIC,CHIP 100nF,10%,16V,X7R,TP,1608
C205 2203-000815 C-CERAMIC,CHIP 0.033nF,5%,50V,NP0,TP,1608
C206 2203-000626 C-CERAMIC,CHIP 0.022nF,5%,50V,NP0,TP,1608
C208 2203-005005 C-CERAMIC,CHIP 100nF,10%,16V,X7R,TP,1608
C210 2203-005005 C-CERAMIC,CHIP 100nF,10%,16V,X7R,TP,1608
C212 2203-005005 C-CERAMIC,CHIP 100nF,10%,16V,X7R,TP,1608
C213 2203-000384 C-CERAMIC,CHIP 0.015nF,5%,50V,NP0,TP,1608
C214 2203-000384 C-CERAMIC,CHIP 0.015nF,5%,50V,NP0,TP,1608
C215 2203-000384 C-CERAMIC,CHIP 0.015nF,5%,50V,NP0,TP,1608
C216 2203-005005 C-CERAMIC,CHIP 100nF,10%,16V,X7R,TP,1608
C217 2402-000108 C-AL,SMD 10uF,20%,16V,WT,TP,4.3x4.3x5.4
C218 2203-005005 C-CERAMIC,CHIP 100nF,10%,16V,X7R,TP,1608
C219 2203-000257 C-CERAMIC,CHIP 10nF,10%,50V,X7R,TP,1608
C220 2402-000108 C-AL,SMD 10uF,20%,16V,WT,TP,4.3x4.3x5.4
C300 2402-000135 C-AL,SMD 22uF,20%,16V,GP,TP,5.3x5.3x5.4
C301 2203-005005 C-CERAMIC,CHIP 100nF,10%,16V,X7R,TP,1608
C302 2203-005005 C-CERAMIC,CHIP 100nF,10%,16V,X7R,TP,1608
C303 2203-005005 C-CERAMIC,CHIP 100nF,10%,16V,X7R,TP,1608
C304 2203-005005 C-CERAMIC,CHIP 100nF,10%,16V,X7R,TP,1608
C305 2402-000135 C-AL,SMD 22uF,20%,16V,GP,TP,5.3x5.3x5.4
C306 2203-005005 C-CERAMIC,CHIP 100nF,10%,16V,X7R,TP,1608
C307 2402-000135 C-AL,SMD 22uF,20%,16V,GP,TP,5.3x5.3x5.4
C308 2203-005005 C-CERAMIC,CHIP 100nF,10%,16V,X7R,TP,1608
C309 2203-000041 C-CERAMIC,CHIP 0.01nF,0.25pF,50V,NP0,TP,1608
C310 2203-000843 C-CERAMIC,CHIP 39nF,10%,25V,X7R,TP,1608,-

Loc. No. Code No. Description Specification Remarks

6 Electrical Parts List

6-1 Main PCB Parts

7 Block Diagram

MO15E* 7-1

H V

NT7181F

Brightness

On/Off

+14V

12MHz

12MHz

(Mascot V)

CONFIDENTIAL

8 Wiring Diagram

MO15E* 8-1

CONFIDENTIAL

8 Wiring Diagram

CONFIDENTIAL

MO15E* 9-1

9 Schematic Diagrams

9-1 Schematic Diagram

100nF

R523 100

G-GND

G-VIDEO

B-VIDEO

B-GND

V-SYNC

+14VDC

R-GND

DSUB_+5V

DSUB_SDA
DSUB_SCL

R-VIDEO

CHK_DSUB

DSUB_GND

H-SYNC

P-GND

D202
BZX84C5V1

1

2

3

16V

100uF

C107

75

R216

C703
470nF
16V
MO

C105
470nF
16V
MO

B

C

E

4.7K

R520

+5V

KSC1623-Y

Q601

R215
33
1/16W

R213

C101

MO

100nF
16V

75

MO

16V

470nF

C106

L200

1.5uH

D204

MMBD4148SE

1

2

3

MS_3.3V

R525
100

+5V

8

SK34

D100

slcon8p

1

2

3

4
5

6
7

470nF
16V

CN501

100uF

C705

C501

MS_3.3V

C500
100nF
16V

R206

100
1/16W

C206
22pF

R200

1/16W

10K

R218
680K

10

R100

1/16W

4.7K

R527

R208

16V

470nF

C513

MO

0

C509

50V

470nF
16V
MO

50V

15pF

C511 C512

15pF

E

C220
10uF

Q701
KSC1623-Y

B

C

C601

100nF

R220

4.7K
1/16W

1/16W

33

R209

16V

100nF

C702

100
1/16W

R207

D203

1

2

3

10

R211

100

1/16W

MMBD4148SE

C706
100uF
16V

R606

Vin

16V

100uF

C701

4

F_B

3

GND

6

GND1

ON_OFF

5

OUT

21

R508

18K

IC100
LM2596S-3.3

18K
R509

+5V

100uF
16V

C502

8

C504

16V

100uF

slcon8p

CN600

1

2

3

4
5

6
7

100nF

C210

D1_1

7
6

D2

D2_1

5

2

G1

4

G2

S1

1

S2

3

+5V

1A2

B

SI9933ADY-T1

IC101

8

D1

BLM41P600S

FT701

1.5uHL601

47K
1/16W

R201

R212

1/16W

33

R605

510

1/16W

C215

15pF
50V

Q600

KSC1623-Y

B

C

E

100nF

C505

16V

100

100nF

C503

16V

TP1491

1

R515

R514 0

R702
100

1/16W

R501
10K
1/16W

53uH

L101

R203

1/16W

100

100nFC208

C213
15pF
50V

PANEL_3.3V

75

R210

2

GND

1IN3

OUT

C600

100nF

16V

470nF

C704

IC500
BA17805FP

10K

R101

R102

TP1490

1

10K

R5134.7K

100R516

R502

470

R500

R503

100

R506

100

4.7K

100

0

R519

10R701

R217

R700

4.7K
1/16W

+3.3V

100

R521

100pF

C203

100R507

+5V

R526 100

C508
10uF

R518 1K

R512

R5114.7K

R517

4.7K

A

2

C1

6

C2

4

C33C4

1

NC

5

100

A

6

C1

4

C2

3
C3

1
C4

5

NC

QZX363C5V6

IC601

IC200
QZX363C5V6

2

+5V

R204 100 1/16W

MMBD4148SE

1

2

3

C218

+5V

D205

R524 100

C507
22pF

1/16W

1M

C506
22pF

X501

HC-49/S-SMD(12MHz,30ppm)

Q0Q1

R505

C212 100nF

50V

15pF

C214

R703
10K
1/16W

10uF

C217

+5V

16V

100nF

C216

R214
10

5

6

7

8

50V

C201
100nF

IC202

1

2

3

4

PC7

36

PD0

35

PD1

34
33

PD2

32

PD3
PD4

31
30

PD5

RSTB

4

V33

644

VSYNCI

LM1881M

28

PB427PB526PB625PB7

PC0

3

PC12PC2

142

PC341PC440PC5

PC6

37

PA123PA2

PA322PA421PA520PA619PA7

18

17

PB0

PB1

16

PB2

15

PB3

14

43

HSYNCI

NC1

38

NC2

39

9

OSCI

8

OSCO

10

P30

11

P31

12

P34
P35

13

29

PA0

24

+5V

NT68F63L

IC501

CVV

5

7

GND

47K

R202
1/16W

+14V

C205
33pF
50V

1/16W

510

R604

C202
100pF

10nF

50V

C219

MO

100nF
16V

C104

1.5uH

L201

12

13

14

MS_3.3V

C100
100uF
16V

2

3

4
5

6
7

8

9

10

11

+14V

CN101

slcon14p_1

1

1/16W

10K

R504

L600 1.5uH

C102

16V

100uF

1

NC5VCC

Y

4

1/16W

100

R607

NC7SZ14M5X

IC201

A

2

GND

3

1

2

3

+14V

16V

100nF

C204

BZX84C5V1

D201

C103
100uF
16V

C200

16V

100uF

C510
100nF

7

8

+5V

+14V

1/16WR205 100

M24C08-WMN1T

IC502

1
2
3
4

5

6

D200

A

1

2

B

3

C

+3.3V

BZX84C5V1

14
15
16
17
18
19
20
21
22

10

R219

4
5
6
7
8

9
10
11
12
13

CN202

slcon22p_1

1

2

3

SDA

SCL

LED_B

H*V_SYNC

A_H*V_SYNC

H*V_SYNC

SEL_MDL

MS_IRQ*

KEY1_IN

CHK_DSUB

MS_RESET*

CHK_DVI
*PANEL_EN

*DPMS_ON

BRIGHT

KEY2_IN

MS_SCL

MS_SDA

GREEN

AMBER

V_SYNC

H_SYNC

LED_A

DDC_DATA

DDC_CLK

INV_GND

*LVDS_EN

A_V_SYNC

*BKLT_EN

SOG_SYNC

AGND

AGND

AGND

AGND

MS_SCL

MS_SDA

SOG_SYNC

*BKLT_EN

KEY1_IN

KEY2_IN

*PANEL_EN

*DPMS_ON

SCL
SDA

BRIGHT

*BKLT_EN

SEL_MDL

INV_GND

AGND

RED+

A_H*V_SYNC

A_V_SYNC

DDC_DATA

DDC_CLK

AGND

BLU+

GRN+

CHK_DSUB

AMBER

GREEN

13

15

14

10

11

8

SEC LT140X1-002 BN07-00004A SA BN68-00187A
SEC LT150XS-L01 BN07-00009A SB BN68-00187B
SEC LT150XS-L01-B BN07-00022A SC BN68-00187C
SEC LTM150XS-L02 BN07-00005A SD BN68-00187D
SEC LT181E2-132 BN07-00001A SE BN68-00187E
SEC LT150XS-T01 BN07-00010A SF BN68-00187F
SEC LTM181E3-132 BN07-00019A SG BN68-00187G
SEC LT170E2-131 BN07-10001D SH BN68-00187H
SEC LT181E2-131 BN07-10001E SJ BN68-00187J
SEC LTM170E4-L01 BN07-00018A SK BN68-00187K
SEC LTM240W1-L01 BN07-00015A SL BN68-00187L
SEC LTM213U3-L01 BN07-00016A SM BN68-00187M
SEC LTM150XH-L01 BN07-00026A SN BN68-00187W
SEC LTM150XH-L03 BN07-00027A SP BN68-00187X
SEC LTM150XS-L01 BN07-00032A SQ BN68-00195B DELL(ZPD)
SEC LTM181E4-L01 BN07-00034A SR BN68-00195C PVA
SEC LTM170EH-L01 BN07-00036A SS BN68-00195D TN
SEC LTM170E5-L01 BN07-00037A SU BN68-00195E PVA
SEC LTM150XH-L11 BN07-00041A SV BN68-00195G
SEC LTM213U4-L01 BN07-00039A SW BN68-00195L PVA
SEC LTM150XH-L01(ZPD) BN07-00045A SX BN68-00195M ZPD
SEC LTM150XH-L04 BN07-00046A SY BN68-00195N PANEL
SEC LTM170W1-L01 BN07-00047A SZ BN68-00195P TV PANEL
SEC LTM150XH-L06 BN07-00053A EA BN68-00195V TV PANEL/450cd Sony& EOS panel
SEC LTM153W1-L01 BN07-00054A EB BN68-00195W NIKE MODEL
SEC LTM170EH-L05 BN07-00055A EC BN68-00195X 17” EH-L05 panel EOS proj.
SEC LTM170E5-L03 BN07-00056A ED BN68-00195Y Dell 1702FP pro. E4 Compatible
SEC LTM190E1-L01 BN07-00057A EE BN68-00195Z DELL 1900 FP
SEC LTM181E5-L01 BN07-00061A EF BN68-00239C 18” narrow bezel GH18PS
SEC LTM150XP-L01 BN07-00065A EG BN68-00239F AMLCD PVA PANEL
SEC LTM240W1-L02 BN07-00062A EH BN68-00239G 15” Wide tv panel
TOSHIBA LTM15C419(A) BN07-00002A TA BN68-00187N
TOSHIBA LTM15C423(B) BN07-00006A TB BN68-00187P
TOSHIBA LTM18C161 BN07-00008A TC BN68-00187U
TOSHIBA LTM15C443 BN07-00031A TD BN68-00195A
TOSHIBA LTM15C458 BN07-00043A TE BN68-00195H
HANNSTAR HSD150MX41A(A) BN07-00020A NA BN68-00187Q TTL
HANNSTAR HSD150MX12 BN07-00030A NB BN68-00187Y LVDS
TORISAN TM150XG-22L03(A) BN07-00021A RA BN68-00187R
TORISAN TM150XG-26L06 BN07-00042A RB BN68-00195J
TORISAN TM181SX-76N01 BN07-00048A RC BN68-00195Q
TORISAN TM150XG-22L06 BN07-00059A RD BN68-00239A 15” XGA TN MODE(ZPD)
TORISAN TM290WX-71N31 BN07-00063A RE BN68-00239D RS24NS (TORISAN 29” NEW PANEL)
TORISAN TM396WX-71N31 BN07-00064A RF BN68-00239E RS24NS (TORISAN 40” NEW PANEL)
SHARP LQ181E1DG11(A) BN07-10001C PA BN68-00187S
HITACHI TX38D12VC0CAA(A) BN07-00003A HA BN68-00187T
HITACHI TX43DVCOCAB BN07-00060A HB BN68-00239B 17” SXGA PVA MODE

IBM ITSX94S BN07-00017A IA BN68-00187V
UNIPAC UM170E0 BN07-00028A UA BN68-00187Z
HYUNDAI HT15X13 BN07-00035A DA BN68-00195F
HYUNDAI HT17E11-200 BN07-00049A DB BN68-00195R TN MODE

ACER L170E3 BN07-00044A AA BN68-00195K TN(ADT)
CHIMEI M170E3-LO1 BN07-00050A CA BN68-00195S TN PANEL
CHIMEI M150X3-L01 BN07-00051A CB BN68-00195T COMPATIBLE
CHIMEI M170E4-L01 BN07-00052A CC BN68-00195U MVA PANEL

MO15E* 10-1

CONFIDENTIAL

Maker VENDOR P/N PANEL_CODE PANEL_ABB STICKER_CODE Remarks

10 Panel Description

CONFIDENTIAL

MO15E*

Copyright

© 2002 by Samsung Electronics Co., Ltd.
All rights reserved.
This manual may not, in whole or in part, be

copied, photocopied, reproduced, translated, or
converted to any electronic or machine readable
form without prior written permission of
Samsung Electronics Co., Ltd.

MO15E* Service Manual
First edition March 2002.

Printed in Korea.

Trademarks

Samsung is a registered trademark and
MO15E* and MacMaster Cable Adapter are
trademarks of Samsung Electronics Co., Ltd.

Macintosh, Centris, Quadra, Duo Dock, and
Power Macintosh are trademarks of Apple
Comprter, Inc.

All other trademarks are the property of their
respective owners.

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