Samsung Syncmaster 203b Service Manual

2 Product Specifications
2-4
2-5 Option Specification
Item Item Name CODE.NO Remark
Quick Setup GuideBN68-00376L
BH68-00261F
BN59-00480H
BN39-00244B
3903-000085
Warranty Card
(Not available in all locations)
Users Guide,
Monitor Driver,
MagicTune
^software
D-Sub(15 Pin) 
Cable
Power Cord 
BN39-00246F Sold separately DVI Cable      
 

4 Troubleshooting
4-1
4 Troubleshooting 
4-1 No Power 
Does proper DC 14 V
appear at Pin 5,6,7
of CN101?
Check the IP Board.
There is no light in the power indicator.
Check IC201 and IC302.
YesNo
Does proper DC 5V
appear at Output of
IC203?Check the IC 203
YesNo
Does proper DC 3.3V
appear at
Pin 4 of the IC403?Check the IC 403.No
Yes
Does proper DC 2.5V
appear at
Pin 3 of the IC301?
Check the IC 301.No
Yes
Yes
Does proper DC 1.8V
appear at
Pin 2 of the IC304?Check the IC 304.No
1
2
3
4
5
 

4 Troubleshooting
4-2
WAVEFORMS
21
43
5
 

4 Troubleshooting
4-3
Is pin9 of
CN501(BKLT_EN)high(3.3V)?
4-2 No Video (PC Analog Signal)
6Check TFT_LCD panel or inverter
and connection between then.
YesNo
Does the analog video signal
appear at R101,105, 108
(Red,Green,Blue)?
Check pc signal.
YesNo
Does the X201 and X200 
oscilate Properly?Check the X200, IC201.No
Yes
Does the proper clock pules
appear at Pin6,7 of
the CN201?
Check IC302 and IC201.No
Yes
Replace LCD Panel.
7
8
10
 

4 Troubleshooting
4-4
WAVEFORMS
76
108
 

4 Troubleshooting
4-5
Is Pin9 of
CN501(BKLT_EN)high(3.3V)?
4-3 No Video (PC Digital Signal)
1Check TFT_LCD panel or inverter
and connection between then.
YesNo
Does the Digital video
signal appear at
R129~R136?Check PC signal.
YesNo
Does the proper clock pules
appear at Pin6,7
of the CN201?
Check IC301 and 302.No10
11
Replace LCD Panel.
Yes
 

4 Troubleshooting
4-6
WAVEFORMS
101
11
 

5 Exploded View & Parts List
5-1
5 Exploded View and Parts List-You can search for updated part codes through ITSELF web site.
URL :  http://itself. sec. samsung.co.kr5-1 LS20HABKSQ/XAA Exploded View(ROUND SIMPLE)
T0003
T0022
M0145 M0112M0215
M0006
M0107 M0014
M0174M0013
M0006
M0003
M0013
 

5 Exploded View & Parts List5-2Location.No
CODE-NO SPECIFICATION & DESCRIPTION QTY SA/SNA REMARK
T0003 BN96-02834G ASSY COVER P-FRONT;LS20HAB (S/M 203B),AB 1 S.A
M0112 BN63-02258F COVER-FRONT;LS20HAB (S/M203B),ABS,T2.2,H 1 S.N.A
T0022 BN64-00377B KNOB CONTROL;HA17TS,PC CLEAR,T2.1,9,112, 1 S.N.A
M0145 BN96-02474C ASSY BOARD P-FUNCTION;HAYDN,YWP-VD-05-05 1 S.A
M0215 BN07-00268A LCD-PANEL;M201P1-L01,Brahms,6Bit FRC,432 1 S.A
M0006 BN96-03342A ASSY SHIELD P-COVER;LS20HAB (203B),SECC, 1 S.N.A
M0107...

5 Exploded View & Parts List
5-3
5-2 LHA20BS(LS20HABESQ/EDC) Exploded View(SLIDING HAS)T0003
M0112
T0022
M0145M0215
1 M0014
M0174M0006
M0107
M00006
M0003
23