Samsung LE27S71B User manual

TFT-LCD TV
Chassis GSM27SE
GSM32SE
GSM37SE
GSM37HEU
GSM40SE
GSM40SEU
Model LE27S71B
LE32S71B
LE37S71B
LE37S61B
LE40S71B
LE40S61B
Manual
SERVICE
TFT-LCD TV Fashion Feature
- Luxurious Slim Design
- Supreme Picture Quality
- Supreme Sound Quality
- Supreme Convenience Quality
- Convenience for Users

ii
Copyright
ⓒ2007 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.
LE27S71B / LE27S72B / LE32S71B / LE37S61B /
LE40S61B Service Manual
First edition June 2007.
Printed in Korea.
Trademarks
Samsung is the registered trademark of Samsung
Electronics Co., Ltd.
LE27S71B / LE27S72B / LE32S71B / LE37S61B /
LE40S61B and Macmaster Cable Adapter are
trademarks of Samsung Electronics Co., Ltd.
Macintosh and Power Macintosh are trademarks of
Apple Computer, Inc.
All other trademarks are the property of their respective
owners.

Contents
11. Precautions………………………………………………………………………………………………………………………………………11-1
1-1 Safety Precautions ……………………………………………………………………………………………………………………… 1-1
1-2 Servicing Precautions …………………………………………………………………………………………………………………… 1-2
1-3 Static Electricity Precautions …………………………………………………………………………………………………………… 1-2
1-4 Installation Precautions…………………………………………………………………………………………………………………… 1-3
2
2. Product specifications …………………………………………………………………………………………………………………………22-1
2-1 Fashion Feature…………………………………………………………………………………………………………………………… 2-1
2-2 LE27S71B Specifications ………………………………………………………………………………………………………………… 2-2
2-3 LE32S71B Specifications ………………………………………………………………………………………………………………… 2-3
2-4 LE37S71B Specifications ………………………………………………………………………………………………………………… 2-4
2-5 LE40S71B Specifications ………………………………………………………………………………………………………………… 2-5
2-6 Spec Comparison ………………………………………………………………………………………………………………………… 2-6
2-7 Option Specification ……………………………………………………………………………………………………………………… 2-7
3
3. Alignments and Adjustments …………………………………………………………………………………………………………………33-1
3-1 Service Instruction ……………………………………………………………………………………………………………………… 3-1
3-2 How to Access Service Mode …………………………………………………………………………………………………………… 3-2
3-3 Factory Data ……………………………………………………………………………………………………………………………… 3-3
3-4 Service Adjustment ……………………………………………………………………………………………………………………… 3-6
3-5 Software Upgrade ………………………………………………………………………………………………………………………… 3-9
4
4. Troubleshooting ………………………………………………………………………………………………………………………………44-1
4-1 First Checklist for Troubleshooting ………………………………………………………………………………………………………4-1
4-2 Checkpoints by Error Mode ……………………………………………………………………………………………………………… 4-2
5
5. Exploded View and Parts List …………………………………………………………………………………………………………………55-1
5-1 LE27S71B/ LE27S72B Exploded View ………………………………………………………………………………………………… 5-1
5-2 LE27S71B/ LE27S72B Parts list ………………………………………………………………………………………………………… 5-2
5-3 LE32S71B Exploded View ……………………………………………………………………………………………………………… 5-3
5-4 LE32S71B Parts list ……………………………………………………………………………………………………………………… 5-4
5-5 LE37S71B Exploded View ……………………………………………………………………………………………………………… 5-5
5-6 LE37S71B Parts list ……………………………………………………………………………………………………………………… 5-6
5-7 LE40S61B Exploded View ……………………………………………………………………………………………………………… 5-7
5-8 LE40S61B Parts list ……………………………………………………………………………………………………………………… 5-8
6
6. Electrical Parts List ……………………………………………………………………………………………………………………………66-1
6-1 LE40S61B Parts List ……………………………………………………………………………………………………………………… 6-1
7
7. Block Diagram …………………………………………………………………………………………………………………………………77-1

Contents
88. Wiring Diagram …………………………………………………………………………………………………………………………………88-1
8-1 Wiring Diagram ……………………………………………………………………………………………………………………………8-1
8-2 Main Board Layout ……………………………………………………………………………………………………………………… 8-2
8-3 PIN characteristic ………………………………………………………………………………………………………………………… 8-3
8-4 Power Board Layout ……………………………………………………………………………………………………………………… 8-6
99. Schematic Diagrams ……………………………………………………………………………………………………………………………99-1
10. O
Operating Instructions and Installation………………………………………………………………………………………………………110-1
10-1 Front …………………………………………………………………………………………………………………………………… 10-1
10-2 Connection Panel ……………………………………………………………………………………………………………………… 10-2
10-3 Remote control ………………………………………………………………………………………………………………………… 10-4
10-4 Installing the Stand …………………………………………………………………………………………………………………… 10-5
10-5 Installing the Wall Mount Kit ………………………………………………………………………………………………………… 10-5
1
11. Disassembly and Reassembly ………………………………………………………………………………………………………………111-1
11-1 Disassembly …………………………………………………………………………………………………………………………… 11-1
11-2 Reassembly …………………………………………………………………………………………………………………………… 11-5
1
12. PCB Diagram …………………………………………………………………………………………………………………………………112-1
12-1 26" Main PCB Diagram ……………………………………………………………………………………………………………… 12-1
12-2 32", 40" Main PCB Diagram ……………………………………………………………………………………………………………12-2
12-3 26" SMPS ……………………………………………………………………………………………………………………………… 12-3
12-4 32" SMPS ……………………………………………………………………………………………………………………………… 12-4
12-5 40" IP Board …………………………………………………………………………………………………………………………… 12-5
113. Circuit Descriptions ……………………………………………………………………………………………………………………………113-1
13-1 Block description ……………………………………………………………………………………………………………………… 13-1
13-2 Main Block ……………………………………………………………………………………………………………………………… 13-3
13-3 SMPS Board …………………………………………………………………………………………………………………………… 13-4
1
14. Reference Infomation ……………………………………………………………………………………………………………………… 114-1
14-1 Technical Terms ……………………………………………………………………………………………………………………… 14-1
14-2 Pin Assignments ……………………………………………………………………………………………………………………… 14-4
14-3 Timing Chart …………………………………………………………………………………………………………………………… 14-7
14-4 Panel Description …………………………………………………………………………………………………………………… 14-11

Samsung Electronics Co.,Ltd.
416, Maetan-3Dong, Yeongtong-Gu, Suwon City,
Gyeonggi-Do, Korea, 443-742
Printed in Korea
P/N : BN82-00139J-00
URL : http://itself.sec.samsung.co.kr/
- 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.

10 Operating Instructions and Installation
10-1
10 Operating Instructions and Installation
10-1 Front

10-2 Connection Panel
10 Operating Instructions and Installation
10-2

10 Operating Instructions and Installation
10-3

10 Operating Instructions and Installation
10-4
10-3 Remote Control

10 Operating Instructions and Installation
10-5
10-4 Installing the Stand
10-5 Installing the Wall Mount Kit

Memo
10 Operating Instructions and Installation
10-6

3 Alignments and Adjustments
3-1
3 Alignments and Adjustments
3-1 Service Instruction
1. Usually, a color TV-VCR needs only slight touch-up adjustment upon installation.
Check the basic characteristics such as height, horizontal and vertical sync.
2. Use the specified test equipment or its equivalent.
3. Correct impedance matching is essential.
4. Avoid overload. Excessive signal from a sweep generator might overload the front-end
of the TV. When inserting signal markers, do not allow the marker generator to distort
test result.
5. Connect the TV only to an AC power source with voltage and frequency as specified on
the backcover nameplate.
6. Do not attempt to connect or disconnect any wire while the TV is turned on. Make sure
that the power cord is disconnected before replacing any parts.
7. To protect aganist shock hazard, use an isolation transform.

3 Alignments and Adjustments
3-2
3-2 How to Access Service Mode
3-2-1 Entering Factory Mode
1. To enter "Service Mode"Press the remote -control keys in this sequence :
- If you do not have Factory remote - control
- If you have Factory remote - control
MENU MUTE
INFO
- The buttons are active in the service mode.
1. Remote - Control Key : Power, Arrow Up, Arrow Down, Arrow Left
Arrow Right, Menu, Enter, Number Key(0~9)
2. Function - Control Key : Power, CH +, CH -, VOL +, VOL -,
Menu, TV/VIDEO(Enter)
3-2-2 Panel Check
Specially for LE26,32R7**, You have to check Panel Maker Because of different adjustments as follows.
First of all, Check the label rating!
1) Label Rating File
If Panel Mark is "A", Set the factory mode
indicating as follows.
Panel BOM(Bill of material) : BN07-00289A
Connector between Panel and Power Unit
: BN39-00603M (300mm)
* Option Byte
1. Gamma "AUO"
2. Panel Option "AUO"
If Panel Mark is "S" or not printed.
Set the factory mode indicating as follows.
Panel BOM(Bill of material) : BN07-00247A
Connector between Panel and Power Unit
: BN39-00603M (300mm)
* Option Byte
1. Gamma "AMLCD"
2. Panel Option "AMLCD_INT"
If Panel Mark is "C" , Set the Factory mode
indicating as follows.
Panel BOM(Bill of Material) : BN07-00207A
Connecotor between Panel and Powe Unit :
BN39-00659A(200mm)
* Option Byte
1. Gamma " CMO "
2. Panel Option " CMO "
Others are same shown below.
PANEL MAKER

3 Alignments and Adjustments
3-3
3-3 Factory Data
1. Calibration
2. Option Table XXXX XXXX
3. White Balance
4. SVP-FX
5. Option Block
6. STV8257/STA323W
7. YC Delay
8. Adjust
9. I2C Check
10. W/B MOVIE
11. Checksum
12. Reset
13. Spread Spectrum
T-MILMPEU-1006 (Main Micom Ver)
T-MILMPEUS-1002 (Sub Micom Ver)
Month / Day / Year / Hour / Min. / Sec.
1. Calibration
1) AV Calibration
2) DTV Calibration
3) PC Calibration
2. Option Table XXXX XXXX
Inch Option 32" Carrier Mute ON TTX Group Auto
Gamma OFF Language English Auto Power ON
Panel Option AMLCD_INT Auto FM ON ---- OFF
2HDMI OFF High Deviation OFF ---- G
Brt.Sensor OFF TTX ON ---- OFF
EnergySave ON TTX List ON Debug OFF
LBE/FBE OFF ACR OFF Ch.Table SUWON
FRC(Micronas) OFF Dynamic CE ON iDTV_Cntry UK
FRC(Samsung) OFF Dynamic Dimming ON Dynamic Contrast OFF
LNA OFF Tuner TOP 10

3 Alignments and Adjustments
3-4

3 Alignments and Adjustments
3-5

3 Alignments and Adjustments
3-6
3-4 Service Adjustment
3-4-1 White Balance - Calibration
If picture color is wrong, do calibration first.
Equipment : CA210, Patten : chess pattern
Execute calibration in Factory Mode
Source AV : PAL composite, Component : 1280*720/60Hz
PC : 1024*768/60Hz
3-4-2 White Balance - Adjustment
If picture color is wrong, check White Balance condition.
Equipment : CA210, Patten : Toshiba
Adjust W/B in Factory Mode
Sub brightness and R/G/B Offset controls low light region
Sub contrast and R/G/B Gain controls high light region
Source AV : PAL composite, Component : 1280*720/60Hz
HDMI[DVI] : 1280*720/60Hz
Toshiba Patten
[ Test Pattern : MSPG-945 Series Pattern #16 ]
*Color temperature
1500K +/-500, -6 ~-20 MPCD
*Color coordinate
H/L : 267/263 +/- 2 35.0 Ft +/- 2.0Ft
L/L : 270/260 +/- 3 1.5 Ft +/- 0.2Ft
( chess patten )

3 Alignments and Adjustments
3-7
3-4-3 Conditions for Measurement
1. On the basis of toshiba ABL pattern : High Light level (57 IRE)
- INPUT SIGNAL GENERATOR : MSPG-925LTH
* Mode NO 2 : 744X484@60 Hz
NO 6 : 1280X720@60 Hz
NO 21 : 1024X768@60 Hz
* Pattern NO 36 : 16 Color Pattern
NO 16 : Toshiba ABL Pattern
2. Optical measuring device : CA210 (FL)
Please use the MSPG-925 LTH generator for model
LE26M51B/LE32M51B/LE40M51B/LE46M51B .
3-4-4 Method of Adjustment
1. Adjust the white balance of AV, Component and DVI Modes.
(AV Component)
a) Set the input to the mode in which the adjustment will be made
(RF DTV PC DVI).
* Input signal - VIDEO Mode : Model #2 (744*484 Mode), Pattern #16
- DTV,DVI Mode : Model #6 (1280*720 Mode), Pattern #16
- HDMI Mode: Model #6(1280*720 Mode), Pattern #16
b) Enter factory color control, confirm the data.
c) Adjust the low light. (Refer to table 1, 2 in adjustment position by mode)
- Adjust sub - Brightness to set the 'Y' value.
- Adjust red offset ('x') and blue offset ('y') to the color coordinates.
* Do not adjust green offset data.
d) Adjust the high light. (Refer to table 1, 2 in adjustment position by mode)
- Adjust red gain ('x') and blue gain ('y') to the color coordinates.
* Do not adjust the green gain and sub-contrast (Y) data.
Picture 4-2 Toshiba ABL Pattern
Low light
Measurement point

3 Alignments and Adjustments
3-8
d) Adjust the high light. (Refer to table 1, 2 in adjustment position by mode)
- Adjust red gain ('x') and blue gain ('y') to the color coordinates.
* Do not adjust the green gain and sub-contrast (Y) data.
Picture 4-3 Toshiba ABL Pattern
High light
Measurement point

3 Alignments and Adjustments
3-9
3-5 Software Upgrade
3-5-1 How to Update Flash ROM
1. Installthe Flash Downloader
ConnectSet(Service Jack)and Jig Cable to execute Program Update.
2. Flash Downloader program update
-Before Turning on the set,Click "connect"which is under of OSD Screen!
-Turn on the Set.