Samsung 920N-BLACK Service manual

LCD-Monitor
Model
SERVICE
LCD Monitor
920NW
Manual
Fashion Feature
- 19" LCD Monitor (1440x 900 )
- Response Time (5ms)
- Simple Stand
- Silver / Black ColorVariation
Copyright
Trademarks
©2007 by Samsung Electronics Co., Ltd.
Samsung is the registered trademark of 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.
920NW Service Manual
First edition July 20067.
Printed in Korea.
ii
920NW and MacMaster Cable Adapter are trademarks
of Samsung Electronics Co., Ltd.
Macintosh, Power Macintosh are trademarks of Apple
Computer, Inc.
All other trademarks are the property of their respective
owners.
Contents
1. Precautions ………………………………………………………………………………………………………………………………………1
1-1
1-1 Safety Precautions ……………………………………………………………………………………………………………………… 1-1
1-2 Servicing Precautions …………………………………………………………………………………………………………………… 1-2
1-3 Electrostatically Sensitive Devices (ESD) Precautions ……………………………………………………………………………… 1-2
1-4 Installation Precautions ………………………………………………………………………………………………………………… 1-3
2. Product specifications …………………………………………………………………………………………………………………………2
2-1
2-1 Fashion Feature…………………………………………………………………………………………………………………………… 2-1
2-2 Specifications ……………………………………………………………………………………………………………………………… 2-1
2-3 Option Specification ……………………………………………………………………………………………………………………… 2-2
3. Alignments and Adjustments …………………………………………………………………………………………………………………3
3-1
3-1 Required Equipment
…………………………………………………………………………………………………………………… 3-1
3-2 Automatic Color Adjustment …………………………………………………………………………………………………………… 3-1
3-3 DDC EDID Data Input …………………………………………………………………………………………………………………… 3-1
3-4 How to execute DDC
…………………………………………………………………………………………………………………… 3-2
3-5 How to execute MCU Code ……………………………………………………………………………………………………………… 3-3
4. Troubleshooting
4-1
………………………………………………………………………………………………………………………………4
4-1 Common Acknowledge ……………………………………………………………………………………………………………………4-1
4-2 No Power & Power LED Off
…………………………………………………………………………………………………………… 4-2
4-3 DC output voltage is unstable …………………………………………………………………………………………………………… 4-3
4-4 Output power is unstable ………………………………………………………………………………………………………………… 4-4
4-5 Backlight can't be turned on
…………………………………………………………………………………………………………… 4-5
4-6 Black Screen and backlight turn on …………………………………………………………………………………………………… 4-6
4-7 White Screen ……………………………………………………………………………………………………………………………… 4-7
4-8 Bad Screen ………………………………………………………………………………………………………………………………… 4-8
5. Exploded View and Parts List
5-1
………………………………………………………………………………………………………………5
6. Electrical Parts List ……………………………………………………………………………………………………………………………6
6-1
7. Block Diagram …………………………………………………………………………………………………………………………………7
7-1
7-1 Power tree …………………………………………………………………………………………………………………………………7-1
7-2 Mainboard part ……………………………………………………………………………………………………………………………7-2
7-3 IP Board Part(SMPS Part)
………………………………………………………………………………………………………………7-2
7-4 IP BOARD part(Inverter Part) ……………………………………………………………………………………………………………7-3
8-1
8. Wiring Diagram …………………………………………………………………………………………………………………………………8
Contents
9. Schematic Diagrams ……………………………………………………………………………………………………………………………9
9-1
9-1 INPUT ……………………………………………………………………………………………………………………………………… 9-1
9-2 DCINPUT ……………………………………………………………………………………………………………………………………9-2
9-3 SCALER ……………………………………………………………………………………………………………………………………9-3
9-4 POWER ……………………………………………………………………………………………………………………………………9-4
9-5 POWER ……………………………………………………………………………………………………………………………………9-5
9-6 KEYPAD ……………………………………………………………………………………………………………………………………9-6
10. Operating Instructions and Installation
……………………………………………………………………………………………………10-1
10-1 Front …………………………………………………………………………………………………………………………………… 10-1
10-2 Rear ………………………………………………………………………………………………………………………………………10-2
10-3 Monitor Assembly ………………………………………………………………………………………………………………………10-3
10-4 Attaching a Base ………………………………………………………………………………………………………………………10-4
11-1
11. Disassembly and Reassembly ………………………………………………………………………………………………………………1
11-1 Disassembly Block …………………………………………………………………………………………………………………… 11-1
11-2 Reassembly …………………………………………………………………………………………………………………………… 11-4
12. PCB Diagram …………………………………………………………………………………………………………………………………1
12-1
13. Circuit Descriptions ……………………………………………………………………………………………………………………………1
13-1
13-1 Overall Block Structure
……………………………………………………………………………………………………………… 13-1
13-2 IP BOARD part(Inverter Part) ………………………………………………………………………………………………………… 13-4
14. Reference Infomation ……………………………………………………………………………………………………………………… 14-1
14-1 Technical Terms ……………………………………………………………………………………………………………………… 14-1
14-2 Connecting the monitor …………………………………………………………………………………………………………………14-3
14-3 Pin Assignments …………………………………………………………………………………………………………………………14-4
14-4 Timing Chart ……………………………………………………………………………………………………………………………14-5
14-5 Preset Timing Modes ………………………………………………………………………………………………………………… 14-6
14-6 Panel Description ……………………………………………………………………………………………………………………… 14-7
-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.
Samsung Electronics Co.,Ltd.
416, Maetan-3Dong, Yeongtong-Gu, Suwon City,
Gyeonggi-Do, Korea, 443-742
Printed in Korea
P/N : BN82URL : http://itself.sec.samsung.co.kr/
1 Precautions
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
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.
1-1-2 Servicing the LCD Monitor
1.
When servicing the LCD Monitor, 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 resistorcapacitor 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 safetyrelated 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.
1-1
1 Precautions
1-2 Servicing Precautions
WARNING:
An electrolytic capacitor installed with the wrong polarity might explode.
Caution:
Before servicing units covered by this service manual, read and follow the Safety Precautions section
of this manual.
Note:
If unforeseen circumstances create conflict between the following servicing precautions and any of the safety
precautions, always follow the safety precautions.
1-2-1 General Servicing
Precautions
1.
2.
3.
Always unplug the unit’s AC power cord from the AC
power source and disconnect the DC Power Jack before
attempting to:
(a) remove or reinstall any component or assembly, (b)
disconnect PCB plugs or connectors, (c) connect a test
component in parallel with an electrolytic capacitor.
Some components are raised above the printed circuit
board for safety. An insulation tube or tape is sometimes
used. The internal wiring is sometimes clamped to
prevent contact with thermally hot components. Reinstall
all such elements to their original position.
4.
Check the insulation between the blades of the AC plug
and accessible conductive parts (examples: metal panels,
input terminals and earphone jacks).
5.
Insulation Checking Procedure: Disconnect the power
cord from the AC source and turn the power switch ON.
Connect an insulation resistance meter (500 V) to the
blades of the AC plug.
The insulation resistance between each blade of the AC
plug and accessible conductive parts (see above) should
be greater than 1 megohm.
6.
After servicing, always check that the screws,
components and wiring have been correctly reinstalled.
Make sure that the area around the serviced part has not
been damaged.
Always connect a test instrument’s ground lead to the
instrument chassis ground before connecting the positive
lead; always remove the instrument’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 electricity.
1.
Immediately before handling any semiconductor
components or assemblies, drain the electrostatic charge
from your body by touching a known earth ground.
Alternatively, wear a discharging wrist-strap device. To
avoid a shock hazard, be sure to remove the wrist strap
before applying power to the monitor.
2.
After removing an ESD-equipped assembly, place it on a
conductive surface such as aluminum foil to prevent
accumulation of an electrostatic charge.
3.
Do not use freon-propelled chemicals. These can
generate electrical charges sufficient to damage ESDs.
4.
Use only a grounded-tip soldering iron to solder or
desolder ESDs.
5.
Use only an anti-static solder removal device. Some
solder removal devices not classified as “anti-static” can
generate electrical charges sufficient to damage ESDs.
1-2
6.
Do not remove a replacement ESD from its protective
package until you are ready to install it. Most
replacement ESDs are packaged with leads that are
electrically shorted together by conductive foam,
aluminum foil or other conductive materials.
7.
Immediately before removing the protective material
from the leads of a replacement ESD, touch the
protective material to the chassis or circuit assembly into
which the device will be installed.
Caution: Be sure no power is applied to the
chassis or circuit and observe all
other safety precautions.
8.
Minimize body motions when handling unpackaged
replacement ESDs. Motions such as brushing clothes
together, or lifting your foot from a carpeted floor can
generate enough static electricity to damage an ESD.
1 Precautions
1-4 Installation Precautions
1. For safety reasons, more than two people are
required for carrying the product.
6. 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
2. Keep the power cord away from any heat emitting
cause fire or electric shock.
devices, as a melted covering may cause fire or
electric shock.
7. When installing the product, leave enough space
(10cm) between the product and the wall for
3. Do not place the product in areas with poor
ventilation purposes.
ventilation such as a bookshelf or closet. The
A rise in temperature within the product may
increased internal temperature may cause fire.
cause fire.
4. Bend the external antenna cable when connecting
it to the product. This is a measure to protect it
from being exposed to moisture. Otherwise, it
may cause a fire or electric shock.
5. Make sure 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.
1-3
1 Precautions
Memo
1-4
2 Product Specifications
2 Product Specifications
2-1 Fashion Feature
- 19" LCD Monitor (1440x 900 )
- Response Time (5ms)
- Simple Stand
- Silver / Black ColorVariation
2-2 Specifications
Specifications
Features
Size
19" Diagonal (41 x 27cm)
Pixel Pinch
0.285(H) x 0.285(V)
Frequency
Horizontal / Vertical
Bandwidth (MHz)
30 ~ 81 kHz/ 56 ~ 75 Hz
140MHz
Resolution
1440 x 900@60Hz
Color
Sliver & Black
Signal Input
Sync. Type
Video Input
Separate/Composite/No Sync. On Green
Analog Signal Level
Power Consumption
Max 36 W
Power saving <1W
Stand
Yes
Swivel ( left / right )
NO
Power Supply
AC 100 ~ 240 VAC(+/-10 %) , 60/50 Hz ± 3 Hz
Dimension (W x D x H)
439.006 x 289.006 x 65.45 mm3 (Without Stand)
439.006x355.452x81.12 mm3 (With Simple Stand)
2-1
2 Product Specifications
2-3 Option Specification
Item
2-2
Item Name
CODE.NO
GUIDE, QUICK SETUP
BH68-00376L-04
MNL User's(CD)
BN59-00537A-00
CARS, WARRANTY
BH68-70438A-10
D-Sub Cable
N/A
Remark
3 Alignments and Adjustments
3 Alignments and Adjustments
This section of the service manual explains how to use the RS232 JIG.
This function is needed for AD board change.
3-1 Required Equipment
The following equipment is necessary for adjusting the monitor:
Computer with Windows 95, Windows 98, Windows NT, Windows 2000, or Windows XP.
MTI-2031 DDC MANAGER JIG
3-2 Automatic Color Adjustment
To Analog video, In 16gray or any pattern using black and white and any mode.(16gray and XGA mode recommend)
1. Push the OSD Menu button to open the OSD
2. Selectl language English
3. Push enter button during 5 seconds.
4. See the screen flashing
3-3 DDC EDID Data Input
1. Input DDC EDID data when replacing AD PCB.
2. Receive/Download the proper DDC file for the model from HQ quality control department.
Install the below jig (Figure 1) and enter the data.
Monitor
PC
PC for JIG
Figure 1.
3-1
3 Alignments and Adjustments
3-4 VGA EDID table
0
1
2
3
4
5
6
7
0
00
XX
11
01
13
51
79
00
1
FF
XX
50
01
00
0E
6E
XX
2
FF
01
54
01
52
00
63
XX
3
FF
03
BF
01
0E
0A
4D
XX
4
FF
6C
EF
01
11
20
61
XX
5
FF
22
80
01
00
20
73
XX
6
FF
1B
81
30
00
20
74
XX
7
00
78
80
2A
1E
20
65
XX
8
4C
2A
71
00
00
20
72
XX
9
2D
DC
4F
98
00
20
0A
XX
A
2B
55
81
51
00
00
20
XX
B
02
A3
40
00
FD
00
20
0A
C
XX
59
01
2A
00
00
00
20
D
XX
48
01
40
38
FC
00
20
E
XX
9E
01
30
4B
00
00
00
F
XX
24
01
70
1E
53
FF
CS
Details:
Byte(Hex)
Field Name and Comments
00-07(8 byte)
Head Information
08--09
0A--0B
0C--0F
10
11
12
13
14
ID Manufacturer Name
Product ID Code
Last 5 Digits of Serial Number
Week of Manufacture
Year of Manufacture
EDID Version Number
EDID Revision Number
Video Input Definition
15
16
17
18
Max Horizontal Image Size (cm)
Max Vertical Image Size (cm)
Display Gamma
Power Management and
Supported Feature(s)
19-22 (10 byte) Chroma Info
23
3-2
Established Timing I
Description
SAM
022B
Used Notes1
Notes2
Notes3
1
3
Analog Signal
0.700,0.000(0.700Vpp)
Separate Sync
Composite Sync
34
27
2.2
Active Off
Display Type = R/G/B Color
Preferred Timing Mode
Red X - 0.640, Red Y - 0.349,
Green X - 0.284,
Green Y - 0.617,
Blue Y - 0.067, Blue X - 0.142,
White X - 0.313,
White Y - 0.329
720x400@70Hz
720x400@88Hz(no)
640x480@60Hz
640x480@67Hz
640x480@72Hz
640x480@75Hz
800x600@56Hz
800x600@60Hz
EDID
00,FF,FF,FF,
FF, FF, FF,00
4C,2D
2B,02
XX,XX,XX,XX
XX
XX
01
03
6C
22
1B
78
2A
DC,55,A3,59,
48,9E, 24,11,
50,54
BF
3 Alignments and Adjustments
Byte(Hex)
24
Field Name and Comments
Established Timing II
25
Manufacturers Reserved Timings
26-35 (16 byte) Standard Timing Identification
36--47 (18 byte) Detailed Timing /
Descriptor Block 1
48-59 (18 byte) Detailed Timing / Descriptor
Block 2
Description
800x600@72Hz
800x600@75Hz
832x624@75Hz
1024x768@87Hz (no)
1024x768@60Hz
1024x768@70Hz
1024x768@75Hz
1280x1024@75Hz
Support
1280x1024@60Hz81,8071,4F
1152x864@75Hz
1280x960@60Hz
Not Used
Not Used
Not Used
Not Used
Not Used
1280X1024@60HZ
Pixel Clock:108.00MHZ
Monitor Range Limits:
Min Vertical Freq - 56 Hz
Max Vertical Freq - 75 Hz
Min Horiz. Freq - 30 KHz
Max Horiz. Freq - 81 KHz
Pixel Clock - 140 MHz
Secondary GTF - Not Supported
EDID
EF
80
81,80
81,40
01,01
01,01
01,01
01,01
01,01
30,2A,00,98,
51,00,2A,40,
30,70,13,00,
52,0E,11,00,
00,1E
38
4B
1E
51
0E
5A-6B (18 byte) Detailed Timing / Descriptor
Block 3
Monitor Name:
SyncMaster
6C-7D (18 byte) Detailed Timing / Descriptor
Block 4
7E
Extension flag
7F
Checksum
Serial Number: Notes4
Remark:
Notes1:
Notes2:
Notes3:
Notes4:
00
53,79,6E,63,
4D,61,73,74,
65,72
XX,XX--XX,XX
00
CS
Get SerialNumber(10----14Digit) from BarCode and transfer it to HEX
Week(1---53),
Year , HEX(Year-1990) ,
Get Barcode(5----14Digit), and save as ASCII
3-3
3 Alignments and Adjustments
3-5 How to execute DDC
1. Install Analog DVI EDID Tool Program
2. Click the Analog DVI EDID Tool icon.
3. Select mode The password is 1234.
Select the manufacture is Venus and the model
name is Venus 17.
4.Setting
The password is 1234.
Select the port1and the SN Leng is 22.
Save the change.
5. Select Write-Auto Write
The SN number is a 22 random numbers.
3-4
3 Alignments and Adjustments
6. Write DDC ok.
3-5 How to execute MCU Code
1. Set the options.
-. Manufacture: MSTAR
-. Device Type: TSUM16_ROM128K_ext_flash
-. Communication Port: DSUB15 (Analog)
-. External Memory: PM25LV010E
2. Click 'Connect File' button, and select the
MCU code.
3. Click 'Read File' button, and select the MCU
code.
3-5
3 Alignments and Adjustments
4. Click 'Auto Program' button.
5. If Program and Verify is OK, turn off the hard
power and than turn on again.
3-6
4 Troubleshooting
4 Troubleshooting
4-1 Common Acknowledge
- If you change the interface board, be sure that the U105, U106 and U103 these three components also
changed to the new I/F board because there was program inside. If not, please re-write EDID or upload
firmware into Flash memory via VGA Cable.
- If you adjust clock and phase, please do it at the condition of Windows shut down pattern.
- If you confirm the R.G.B. color is normal or not, please do it under 16-grey scalar pattern.
- This LCM is analog interface. So if the entire screen is an abnormal color that means the problem
happen in the analog circuit part, if only some scale appears abnormal color that stand the problem
happen in the digital circuit part.
- If you check the H/V position, please use the crosshatch pattern.
- This LCM support more than 30 timing modes, if the input timing mode is out of specification, the picture
may appears abnormally.
- If brightness uneven, repairs Inverter circuit or change a new panel.
- If you find the vertical line or horizontal line lost on the screen, please change panel.
4-1
4 Troubleshooting
4-2 No Power & Power LED Off
No power
Check primary
rectifier voltage
Check IC802,
C805, T801
Check circuit if
short
Check F801, P801,
RT,801,D801
Check pin6 of
IC802 voltage
about 12V
Check pin2 of
IC802 voltage
about 3V
Check pin1 of
IC802 voltage is
voltage is below 1V
END
4-2
Check C810,D803,C807
Check primary OVP, OLP
and secondary feedback,
Check R811, R810,
R809, R808,R814
4 Troubleshooting
4-3 Output power is unstable
Unstable power
Check sampling
Circuit
Check R822, R823,
R824
Change R822, R823,
R824
Check the C pin
voltage of IC803 if
3V
Check the R pin
voltage of IC803
about 2.5V
Change IC803
Check R819, R820
Check pin1 of
IC802 voltage is
5.8V
Check R818, D804,
C807 if short
Change R818
Check pin1 of
IC802 voltage
about 3V
Change R808, R809,
R810, R811
END
4-3
4 Troubleshooting
4-4 Backlight can't be turned on
No backlight
Yes
No
LED lamp is OK
No power supply to
inverter
Yes
Check the cable that from
I/F BD to P/I BD is ok
Yes
Is there 14V
voltage on pin 3,4
of T501, T502
No
No
U501, U502 fail
Check power supply
Yes
Is there PWM
signal on pin 4 of
IC501
Replace U501, U502
No
Check I/F BD
Yes
Is there High level
voltage on pin10 of
IC501
No
Check I/F BD
Yes
Vsense voltage
2.9V
No
Lamp connector opened
No
Are there PWM
signal on pin1,
pin15 of IC501
No
IC501 failure
Yes
Pin 5 of IC501
voltage is Low level
Yes
Yes
Feedback circuit failure
Check C524,R528, R533,
D507
Yes
Pin 3 of IC501
voltage is high level
voltage
END
4-4
Yes
Yes
IC501 protected
Check D505, D511,
D512, R513, R520, C520
4 Troubleshooting
4-5 Black Screen and backlight turn on
Black Screen
Check power
supply: Pin1, 2 of
CN102
No
Power Fail
Yes
Check pin34, 51,
66, and 82 Of
U105
No
Check FB103 And U102
Yes
Check pin12, 68,
97 and 117 Of
U103
No
Check FB105 And U106
Yes
No
Check Reset
(pin19) Of U103
Check C149, R157
Yes
Check Crystal:
Pin32, Pin33 Of
U103
No
Check: X1, C147, C148
Yes
Check CCFLEnable (pin20) of
U103
No
Yes
Check pin5 of
CN102
No
Yes
Inverter Fail
Check R127, Q101,
R125, R126
MCU Fail
4-5
4 Troubleshooting
4-6 White Screen
White Screen
Yes
LVDS Cable
Reinsert
Workmanship
No
Yes
Change LVDS
Cable
LVDS Cable NG
No
Check VLCD Is
5V?
Yes
Check LVDS
Signals
Check Panel
Enable Of U103
(pin75) is High?
Check the HW
Reset Of U103
pin19
No
Yes
Check R134, R176,
Q102, Q105
Check the pins Of
U103
4-6
Panel Fail
No
No
END
Yes
No
Check C149 R157
4 Troubleshooting
4-8 Bad Screen
Bad Screen
LVDS Cable
Reinsert
Yes
Workmanship
No
Change LVDS
Cable
Yes
LVDS Cable NG
No
Check
Crystal:Pin32,
Pin33 of U103
Yes
Check :X1, C147, C148
Yes
Check the
communication Of
U103 and U104
No
Check: SDO, SCZ, SCK,
SDI, Reset
Yes
Check the pins of U103
and U104
4-7
4 Troubleshooting
Memo
4-8
6 Exploded View & Parts List
5 Exploded View and Parts List
-You can search for updated part codes through ITSELF web site.
URL : http://itself. sec. samsung.co.kr
5-1 Exploded View
M0215
7140200053
7140100097
5-1
5 Exploded View & Parts List
5-1-1 LS19HANKSM/EDC Parts List
Location.No
CODE-NO
SPECIFICATION & DESCRIPTION
M0215
BN07-00406A
LCD-PANEL;MT190AWO1 V2,Haydn,6bit FRC,42
7140200053
BN82-00152A
A/S MATERIAL ASSY-BASE;LE1729
1
S.A
7140100097
BN82-00188B
A/S MATERIAL ASSY-STAND;LE1961
1
S.A
5-2
Q'TY
SA/SNA
1
S.A
REMARK
6 Electrical Parts List
6 Electrical Parts List
You can search for updated part codes through ITSELF web site.
URL : http://itself.sec.samsung.co.kr/
6-1 LS19HANKSM/EDC Parts List
Level
Loc. No.
Code No.
Description & Specification
Q'ty
SA/SNA
LS19HANKSM/EDC
920NW SILVER, TCO99
BN07-00406A
LCD-PANEL;MT190AWO1 V2,Haydn,6bit FRC,42
1
S.A
0.1
M0215
0.1
4530101001 BN81-00270A
A/S-CABLE;D-SUB 15P MALE 6FT,ROHS,BLACK/
1
S.N.A
0.1
7909714006 BN81-00544A
A/S-PCB;P/I BOARD,LE1961-610 ROHS,790971
1
S.A
0.1
7909713006 BN81-00545A
A/S-PCB;I/F BOARD,LE1961-610 ROHS,790971
1
S.A
0.1
7909715000 BN81-00546A
A/S-PCB;KEYPAD BOARD,LE1961 ROHS,7909715
1
S.A
0.1
5010102104 BN81-00547A
A/S-BEZEL FRONT;LE1961,501010210400R
1
S.A
0.1
5010302063 BN81-00548A
A/S-BUTTON FUNCTION KEY;LE1961,501030206
1
S.A
0.1
4530708001 BN81-00549A
A/S-PWR CORD;BLK 6FT UL/CSA,10A/125V,453
1
S.A
0.1
4303030009 BN81-00550A
A/S-HRN LVDS;30P,120mm,ROHS,430303000920
1
S.A
0.1
7030000059 BN81-00551A
A/S-KIT ACCESSORY;920NW,US,LE1961,703000
1
S.A
0.1
4303008002 BN81-00555A
A/S-HRN ASS'Y;2*4P to 5P,265mm,UL1571#28
1
S.A
0.1
7140200053 BN82-00152A
A/S MATERIAL ASSY-BASE;LE1729
1
S.A
0.1
7140500095 BN82-00188A
A/S MATERIAL ASSY-BACK COVER;LE1961
1
S.A
0.1
7140100097 BN82-00188B
A/S MATERIAL ASSY-STAND;LE1961
1
S.A
6-1
6 Electrical Parts List
Memo
6-2
7 Block Diagrams
7 Block Diagram
7-1 Power tree
7-1
7 Block Diagrams
7-2 Main Board part
7-3 IP Board Part (Power part)
7-2
7 Block Diagrams
7-4 IP BOARD part(Inverter Part)
Vin voltage
(+14.2V)
DC to DC
(+14.2V to 5.0V)
Brightness
control signal
ON/OFF
CCFL PWM
Control IC IC501
Transformer
T501
CCFL1
CCFL2
MosFET
U501
MosFET
U502
Transformer
T502
CCFL1
CCFL2
Voltage
feedback
Current
feedback
7-3
7 Block Diagrams
Memo
7-4
8 Wiring Diagram
8 Block Diagram
8-1
8 Wiring Diagram
Memo
8-2
9 Schematic Diagrams
9 Schematic Diagrams
- This Document can not be used without Samsung s authorization.
9-1 INPUT
9-1
9 Schematic Diagrams
9-2 DCINPUT
9-2
9 Schematic Diagrams
9-3 SCALER
9-3
9 Schematic Diagrams
9-4 POWER
9-4
9 Schematic Diagrams
9-5 POWER
9-5
9 Schematic Diagrams
9-6 KEYPAD
9-6
10 Operating Instructions and Installation
10 Operating Instructions and Installation
10-1 Front
1. Menu button
Opens the OSD menu. Also use to exit the OSD
menu or return to the previous menu.
3) Internet : Medium brightness
For working with a mixture of images such as text
and graphics.
2. MagicBright button
MagicBright is a new feature providing optimum
viewing environment depending on the contents of
the image you are watching. Currently six different
modes are available: Custom, Text, Internet,
Game, Sport and Movie. Each mode has its own
pre-configured brightness value. You can easily
select one of six settings by simply pressing
MagicBright control buttons.
4) Entertain
For watching motion pictures such as a DVD or
Video CD
1) Custom
Although the values are carefully chosen by our
engineers, the pre-configured values may not be
comfortable to your eyes depending on your taste.
If this is the case, adjust the brightness and contrast by using the OSD menu.
2) Text : Normal brightness
For documentations or works involving heavy text.
3. Brightness button
When OSD is not on the screen, push the button
to adjust brightness.
2,3. Adjust buttons
Adjust items in the menu.
4. Enter button
Activates a highlighted menu item.
5. Auto button
Use this button for auto adjustment.
6. Power button / Power indicator
Use this button for turn the monitor on and off.
/This light glows green during nomal operation,
and blinks green once as the monitor saves your
adjustments.
10-1
10 Operating Instructions and Installation
10-2 Rear
3
4
1
2
1. Power port
Connect the power cord for your monitor to the power port on the back of the monitor.
2. D-sub 15-pin port
Connect the signal cable to the 15-pin, D-sub connector on the back of your monitor.
3. Power on/off Switch(option)
Use this button for turn the monitor on and off.
4. Kensington Lock
The Kensington lock is a device used to physically fix the system when using it in a public place.
(The locking device has to be purchased separately. )
To get the information on using the Kensington Lock, contact an aurhorized dealer.
10-2
10 Operating Instructions and Installation
10-3 Connecting the monitor
1.
Connect the power cord for your monitor to the power port on the back of the monitor.
Plug the power cord for the monitor into a nearby outlet.
2-1. Using the D-sub (Analog) connector on the video card.
Connect the signal cable to the 15-pin, D-sub connector on the back of your monitor.
2-2. Connected to a Macintosh.
Connect the monitor to the Macintosh computer using the D-SUB connection cable.
2-3. In the case of an old model Macintosh, you need to connect the monitor using a special Mac adapter.
3.
Turn on your computer and monitor. If your monitor displays an image, installation is complete.
10-3
10 Operating Instructions and Installation
10-4 Monitor Assembly
10-4
10 Operating Instructions and Installation
10-5 Attaching a Base
A. Monitor
B. Mounting interface pad
1. Turn off your monitor and unplug its power cord.
2. Lay the LCD monitor face-down on a flat surface with a cushion beneath it to protect the screen.
3. Remove four screws and then remove the stand from the LCD monitor.
4. Align the mounting interface Pad with the holes in the rear cover mounting pad and secure it with four
screws that came with the arm-type base, wall mount hanger or other base.
10-5
10 Operating Instructions and Installation
Memo
10-6
11 Disassembly and Reassembly
11 Disassembly and Reassembly
11-1 Disassembly Block
LE 1729
LCD Monitor
ASSY, BASE
BASE*1
RUBBER FOOT *6
SCREW.P.CROSS,T.T-4*8,Zn
STAND_REAR*1
HINGE *1
SCREW M4*10 *3
ASSY STAND
SCREW M4*10 *4
STAND_FRONT *1
BACK COVER
BKT-VESA *4
LENS*1
CONTROL BOARD*1
CHASSIS *1
PCBA I/F BOARD *1
Power Board *1
SCREW M3*6
CLIP,WIRE *1
SHIELING*1
ASSY FRONT BEZEL
ASSY PANEL*1
SCREW M3*5, *4
CABLE 30P FFC
BOLT,#4-40*11.8,Ni *2
BEZEL*1
BUTTON,FUNCTION *1
INNOLUX PANEL EN01
Note: The DIS assembly direction please following direction of arrowhead
11-1
11 Disassembly and Reassembly
Description
1. Remove 4 screw from the stand
2. Remove the stand and front coler
11-2
Picture Description
11 Disassembly and Reassembly
Description
Picture Description
3. Lift the back cover and use the jig to remove
the shield lamp.
4. Disconnect cables
5. Lift up the shield and disconnect LVDS cables
11-3
11 Disassembly and Reassembly
설명
사Description
진 설명
6. Lift up the LCD panel
11-2 Reassembly
Reassembly procedures are in the reverse order of disassembly procedures.
11-4
Picture Description
12 PCB Diagram
12 PCB Diagram
12-1 Main Board
12-1-1 Main Board Top Layer
12-1-2 Main Board Bottom Layer
12-1
12 PCB Diagram
Memo
12-2
13 Circuit Descriptions
13 Circuit Descriptions
13-1 Overall Block Structure
13-1-1 Power Tree
1. When the AD board is in DPMS state:
1.1 The IP has been designed so that it operates with a power consumption of less than 0.6W of.
1.2 The Scaler consumes power up to 37mA
1.3 The power to the panel is switched off
2. When the AD board is operating normally:
2.1 The maximum power consumption of the panel lamps is described below (It may vary depending on
the panel manufacturer)
17" : 4*(7.0mA*650Vrms)=4* 4.55W=18.2W
2.2 The power consumption of the Panel Control board is as follows: 5V*645mA=3.23W
2.3 The power consumption of the Scaler is as follows: 3.3V*204mA + 1.8V*145mA = 0.93W
13-1
13 Circuit Descriptions
13-1-2 Main board Parts
1. Inverter: A conversion device that converts DC
rated voltage/current to high ones necessary for
the panel lamp.
2. DC/DC(Regulator): General term for DC to DC
converting devices.
The IP board receives 5V and outputs 1.8 or
3.3V that is supplied to the scaler
(TSUM16AL-LF).
3. Power MosFET: The IP board receives 5V and
outputs a lower voltage in DPMS mode and supplies the whole 5V for the panel operating board in
normal conditions. In that case, the switching of
Power MosFET is controlled by Micom.
4. Scaler: Receives the analog R,G,B signals and
convert them to proper reso- lutions using up- or
down- scaling that are transferred to the panel in
the LDVS formats.
5. Crystal(Oscillator): Use one 14.318MHz oscillator externally to supply power to both MCU and
Scaler at the same time.
13-2
6. Scaler & EEPROM: I2C is a two-way serial bus
of two lines that supports communications across
the integrated circuits as well as between FLASH
and EEPROM.
In particular, MCU(TSUM16AL-LF) and use the
SDR direct bus for mutual communications, which
is an effective, speedy system because it allows 4
additional address/data lines com- pared to the old
serial systems.
7. Function Key: A certain keystroke generates a
certain electrical potential, which is transferred into
ADC input port of the MCU and then con- verted to
a digital value by the A/D converter of the chip. The
digital value (data) is a clue to which key is
entered.
13 Circuit Descriptions
13-1-3 IP Board Part(Power) Schematic Diagrams
13-3
13 Circuit Descriptions
13-3 IP BOARD part(Inverter Part)
Vin voltage
(+14.2V)
DC to DC
(+14.2V to 5.0V)
Brightness
control signal
ON/OFF
CCFL PWM
Control IC IC501
Transformer
T501
CCFL2
MosFET
U501
MosFET
U502
Transformer
T502
Voltage
feedback
Current
feedback
13-4
CCFL1
CCFL1
CCFL2
14 Reference Infomation
14 Reference Infomation
14-1 Technical Terms
-TFT-LCD
Thin film Transistor Liquid Crystal Display
-ADC(Analog to Digital Converter)
This is a circuit that converts from analog signal to
digital signals.
-PLL(Phase Locked Loop)
During progressing ADC, Device makes clock synchronizing HSYNC with Video clock
-Inverter
Device that supplies Power to LCD panel lamp.
This device generates about 1,500~2,000V.
AC Adapter
Device that converts AC(90V~240V) to DC(+12V
or 14V)
-SMPS(Switching Mode Power Supply)
Switching Mode Power supply. This design technol- ogy is used to step up/down the input power
by switching on/off
-FRC(Frame Rate Controller)
Technology that changes the number of frames
dis- played on screen per second.
TFT-LCD panel requires 60 frames per second.
This technology is needed to convert input image
to 60 frames per second regardless input frame
quan- tity.
-Image Scaler
Technology that convert various input resolution to
other resolution.(ex. 640* 480 to 1024*768)
-Auto Configuration(Auto adjustment)
This is an algorithm to adjust monitor to optimum
condition by pushing one key.
-OSD(On Screen Display)
Customers can easily control the screen settings
using the OSD.
-FINE
The "Fine" adjustment is used to adjust visibility by
controlling phase difference.
-COARSE
This adjustment adjusts the display by tuning
Video clock and PLL clock.
-L.V.D.S.(Low Voltage Differential Signaling)
A kind of transmission method for Digital. It can be
used from Main PBA to Panel.
-DDC(Display data channel)
It is a communication method between a Host
Computer and related equipment. It enables Plug
and Play between PC and
Monitor.
-EDID
Extended Display Identification Data PC can
recog- nize monitor information, such as Product
data, Product name, Display mode, Serial number,
Signal source, etc. Data is recognized via DDC
Line linking PC and Monitor.
-Dot Pitch
The image on a monitor is composed of red, green
and blue dots. The closer the dots, the higher the
resolution. The distance between two dots of the
same color is called the 'Dot Pitch'. Unit: mm
-Vertical Frequency
The screen must be redrawn several times per
sec- ond in order to create and display an image
for the user. The frequency of this repetition per
second is called Vertical Frequency or Refresh
Rate. Unit: Hz Example: If the same light repeats
itself 60 times per second, this is regarded as 60
Hz.
-Horizontal Frequency
The time to scan one line connecting the right
edge to the left edge of the screen horizontally is
called Horizontal Cycle. The inverse number of the
Horizontal Cycle is called Horizontal Frequency.
Unit: kHz
14-1
14 Reference Infomation
-Interlace and Non-Interlace Methods
Showing the horizontal lines of the screen from the
top to the bottom in order is called the NonInterlace method while showing odd lines and then
even lines in turn is called the Interlace method.
The Non- Interlace method is used for the majority
of monitors to ensure a clear image. The Interlace
method is the same as that used in TVs.
-Plug & Play
This is a function that provides the best quality
screen for the user by allowing the computer and
the monitor to exchange information automatically.
This monitor follows the international standard
VESA DDC for the Plug & Play function.
-Resolution
The number of horizontal and vertical dots used to
compose the screen image is called 'resolution'.
This number shows the accuracy of the display.
High resolution is good for performing multiple
tasks as more image information can be shown on
the screen.
Example: If the resolution is 1280 x 1024 , this
means the screen is composed of 1280 horizontal
dots (horizontal resolution) and 1024 vertical lines
(vertical resolution).
14-2
14 Reference Infomation
14-2 Pin Assignments
Sync
Type
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
15-Pin D-Sub Signal Cable Connector
Separate
Red
Green
Blue
NC
DDC Return (GND)
GND-R
GND-G
GND-B
NC
Cable Detect
NC
Bi-Dr Data (SDA)
H-Sync.
V-Sync.
DDC Clock (SCL)
Sync-on-green
Red
Green + H/V Sync.
Blue
NC
DDC Return (GND)
GND-R
GND-G
GND-B
NC
Cable Detect
NC
Bi-Dr Data (SDA)
Not Used
Not Used
DDC Clock (SCL)
14-3
14 Reference Infomation
14-3 Timing Chart
- This section of the service manual describes the timing that the computer industry recognizes as standard for
computer-generated video signals.
Table 1 Timing Chart
No
dot_clk
(MHz)
Timing ID
Name
h_freq
(kHz)
v_freq
(Hz)
1
IBM 640*350/70Hz
640*350/70Hz
25.175
31.469
70
2
IBM 720*400/70Hz
720*400/70Hz
28.322
31.469
70
3
IBM 640*480/60Hz
640*480/60Hz
25.175
31.469
60
4
MAC 640*480/67Hz
640*480/67Hz
30.240
35.000
66.7
5
VESA 640*480/72Hz
640*480/72Hz
31.500
37.861
72
6
VESA 640*480/75Hz
640*480/75Hz
31.500
37.500
75
7
VESA 800*600/56Hz
800*600/56Hz
36.000
35.156
56
8
VESA 800*600/60Hz
800*600/60Hz
40.000
37.879
60
9
VESA 800*600/72Hz
800*600/72Hz
50.000
48.077
72
10
VESA 800*600/75Hz
800*600/75Hz
49.500
46.875
75
11
MAC 832*624/75Hz
832*624/75Hz
57.284
49.726
75
12
VESA 1024*768/60Hz
1024*768/60Hz
65.000
48.363
60
13
VESA 1024*768/70Hz
1024*768/70Hz
75.000
56.476
70
14
VESA 1024*768/75Hz
1024*768/75Hz
78.750
60.023
75
15
VESA 1152*864/75Hz
1152*864/75Hz
108.000
67.500
75
16
MAC 1152*870/75Hz
1152*870/75Hz
100.000
68.681
75
17
VESA 1280*1024/60Hz
1280*1024/60Hz
108.000
63.981
60
18
VESA 1280*1024/75Hz
1280*1024/75Hz
135.000
79.976
75
H/V Composite Sync
Separate Sync
Video
Video
C
D
E
Q
R
S
Sync-on-Green
Sync
Sync
B
P
A
O
A : Line time total
B : Horizontal sync width
O : Frame time total
P : Vertical sync width
C : Back porch
D : Active time
Q : Back porch
R : Active time
E : Front porch
14-4
S : Front porch
14 Reference Infomation
14-4 Preset Timing Modes
- If the signal transferred from the computer is the same as the following Preset Timing Modes, the screen
will be adjusted automatically. However, if the signal differs, the screen may go blank while the power LED
is on. Refer to the video card manual and adjust the screen as follows.
Horizontal Frequency
The time to scan one line connecting the right edge to the left edge of the screen horizontally is called
Horizontal Cycle and the inverse number of the Horizontal Cycle is called Horizontal Frequency. Unit: kHz
Vertical Frequency
Like a fluorescent lamp, the screen has to repeat the same image many times per second to display an
image to the user. The frequency of this repetition is called Vertical Frequency or Refresh Rate. Unit: Hz
14-5
14 Reference Infomation
14-5 Panel Description
Maker
INL
CPT
14-6
VENDOR P/N
631102071830r
631102070680r
PANEL_CODE
PANEL_ABB
STICKER_CODE
Remarks
LCD PANEL 17" MT170EN01
LCS PANEL 17" CLAA170EA07Q(CPT)