Samsung LA40F71BX Schematic
TFT-LCD TV
Chassis GFM40KSA
GFM40CCN
GFM46KSA
GFM46CCN
GFM52KSA
GFM52CCN
Model LA40F71BX
LA46F71BX
LA52F71BX
SERVICE Manual
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TFT-LCD TV |
Fashion Feature |
-Luxurious Slim Design
-Supreme Picture Quality
-Supreme Sound Quality
-Supreme Convenience Quality
- Convenience for Users
Copyright
©2006 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.
LA40F71B/LA46F71B Service Manual
First edition June 2006.
Printed in Korea.
Trademarks
Samsung is the registered trademark of Samsung Electronics Co., Ltd.
LA40F71B/LA46F71B 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.
ii
Contents
Contents
-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 : BN82-00145H-00
URL : http://itself.sec.samsung.co.kr/
2 Product Specifications
2 Product specifications
2-1 Fashion Feature
Wise link (except 52")
-Accept 10 types of Memory Cards including USB (10 in 3 ) Excellent Compatibility. SD/MMC/CF/MD/MS/MSPRO/XD/SM
Smooth Motion Driver
-No ghosting, No Smearing Edge in image
powered by Smooth Motion Driver Engine of Samsung LCD TV
Wide Color Gamut
- More natural and vivid picture quality by WCG (127%)
High Dynamic Contrast
- 7000:1 Highest dynamic Contrast Ratio
Best Off-Angle Viewing
- Widened Viewing Angle , 178
/ 178
(Left/Right)
Real 10 Bit
- Panel 10 Bit + Signal Processing 10 Bit
Game Mode
- Present the most suitable picture for gaming
Swivel Stand
- 20
/ 20
(left/right)
Full HD
- 1080p (1920 x 1080 Pixels)
2-1
2 Product Specifications
2-2 LA40F71B Specifications
Item |
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Description |
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LCD Panel |
A-si TFT matrix, 40'' Diagonal, 0.46125(H) x 0.15375(v) x 3 mm pixel pitch |
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Scanning Frequency |
Horizontal : 30 kHz ~ 80 kHz (Automatic) / Vertical : 56 Hz ~ 75 Hz (Automatic) |
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Display Colors |
16.7 M colours |
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Maximum Resolution |
Horizontal : 1920 Pixels |
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Vertical |
: 1080 Pixels |
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Input Video Signal |
Analog 0.7 Vp-p ± 5% positive at 75 , internally terminated |
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Input Sync Signal |
Type : Seperate H/V |
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Level : TTL level |
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Maximum Pixel Clock rate |
166.8 MHz |
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Active Display |
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Horizontal/Vertical |
885.6 (H) mm / 498.15 (V) mm |
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AC power voltage & Frequency |
AC 100 ~ 240V, 50/60Hz |
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Power Consumption |
210 W |
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Dimensions(W x D x H) |
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Set |
994.0 x 92.0 x 647.0 mm (39.13 x 3.62 x 25.47 inches) Without stand |
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994.0 x 290.0 x 696.0 mm (39.13 x 11.41 x 27.40 inches) After installation Stand |
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Weight |
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Set(After installation Stand) |
24.3 kg (53.57 lbs) |
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TV System |
Tunning |
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Frequency Synthesize |
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System |
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PAL, SECAM, NTSC-M |
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Sound |
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MONO, STEREO, NICAM |
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Environmental Considerations |
Operating Temperature : 50°F ~ 104°F (10°C ~ 40°C) |
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Operating Humidity : 10 % ~ 80 % |
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Storage Temperature : -4°F ~ 113°F (-20°C ~ 45°C) |
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Storage Humidity : 5 % ~ 95 % |
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Antena Input |
75 |
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- MAX Internal speaker Out : Right : 10W / Left : 10W |
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- BASS Control Range : -8 dB ~ + 8dB |
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Sound Characteristic |
- TREBLE Control Range : -8 dB ~ +8 dB |
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- Headphone Out : 10 mW MAX |
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- Output Frequency : RF : 80 Hz ~ 15 kHz |
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A/V : 80 Hz ~ 20 kHz |
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2-2
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2 Product Specifications |
2-3 LA46F71B Specifications |
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Item |
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Description |
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LCD Panel |
a-si TFT active matrix, 46" Diagonal, 0.53025(H) x 0.17675(V) x 3 mm pixel pitch |
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Scanning Frequency |
Horizontal : 30 kHz ~ 80 kHz (Automatic) / Vertical : 56 Hz ~ 75 Hz (Automatic) |
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Display Colors |
16.7 M colours |
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Maximum Resolution |
Horizontal : 1920 Pixels |
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Vertical |
: 1080 Pixels |
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Input Video Signal |
Analog 0.7 Vp-p ± 5% positive at 75 , internally terminated |
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Input Sync Signal |
Type : Seperate H/V |
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Level : TTL level |
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Maximum Pixel Clock rate |
166.8 MHz |
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Active Display |
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Horizontal/Vertical |
1018.08(H)mm x 572.67(V)mm |
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AC power voltage & Frequency |
AC 100~240V, 50 ~ 60 Hz |
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Power Consumption |
300 W |
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Dimensions(W x D x H) |
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Set |
44.4 x 4.2 x 28.8 inches (1129 x 106 x 732 mm) Without stand |
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44.4 x 12.8 x 31 inches (1129 x 326 x 788 mm) After installation Stand |
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Weight |
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Set(After installation Stand) |
35.5kg (78.26lbs) |
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TV System |
Tunning |
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Frequency Synthesize |
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System |
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PAL, SECAM, NTSC-M |
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Sound |
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MONO, STEREO, NICAM |
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Environmental Considerations |
Operating Temperature : 50°F ~ 104°F (10°C ~ 40°C) |
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Operating Humidity : 10 % ~ 80 % |
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Storage Temperature : -4°F ~ 113°F (-20°C ~ 45°C) |
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Storage Humidity : 5 % ~ 95 % |
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Antena Input |
75 |
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- MAX Internal speaker Out : Right : 10W / Left : 10W |
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- BASS Control Range : -8 dB ~ + 8dB |
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Sound Characteristic |
- TREBLE Control Range : -8 dB ~ +8 dB |
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- Headphone Out : 10 mW MAX |
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- Output Frequency : RF : 80 Hz ~ 15 kHz |
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A/V : 80 Hz ~ 20 kHz |
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2-3
2 Product Specifications
2-4 LA52F71B Specifications
Item |
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Description |
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LCD Panel |
a-si TFT active matrix, 52" Diagonal, 0.6 (H) x 0.2 (V) x 3 mm pixel pitch |
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Scanning Frequency |
Horizontal : 30 kHz ~ 80 kHz (Automatic) / Vertical : 56 Hz ~ 75 Hz (Automatic) |
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Display Colors |
16.7 M colours |
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Maximum Resolution |
Horizontal : 1920 Pixels |
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Vertical |
: 1080 Pixels |
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Input Video Signal |
Analog 0.7 Vp-p ± 5% positive at 75 , internally terminated |
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Input Sync Signal |
Type : Seperate H/V |
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Level : TTL level |
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Maximum Pixel Clock rate |
166.8 MHz |
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Active Display |
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Horizontal/Vertical |
1152 (H) mm x 648 (V) mm |
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AC power voltage & Frequency |
AC 100~240V, 50 ~ 60 Hz |
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Power Consumption |
310 W |
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Dimensions(W x D x H) |
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Set |
50.4 x 4.4 x 32.4 inches(1281.0 x 112.7 x 823.4mm) Without stand |
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50.4 x 12.8 x 34.6 inches(1281.0 x 326.0 x 879.0mm) After installation Stand |
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Weight |
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Set(After installation Stand) |
42.6Kg (93.92 lbs) |
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TV System |
Tunning |
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Frequency Synthesize |
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System |
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PAL, SECAM, NTSC-M |
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Sound |
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MONO, STEREO, NICAM |
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Environmental Considerations |
Operating Temperature : 50°F ~ 104°F (10°C ~ 40°C) |
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Operating Humidity : 10 % ~ 80 % |
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Storage Temperature : -4°F ~ 113°F (-20°C ~ 45°C) |
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Storage Humidity : 5 % ~ 95 % |
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Antena Input |
75 |
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- MAX Internal speaker Out : Right : 10W / Left : 10W |
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- BASS Control Range : -8 dB ~ + 8dB |
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Sound Characteristic |
- TREBLE Control Range : -8 dB ~ +8 dB |
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- Headphone Out : 10 mW MAX |
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- Output Frequency : RF : 80 Hz ~ 15 kHz |
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A/V : 80 Hz ~ 20 kHz |
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2-4
2 Product Specifications
2-4 Spec Comparison
Model |
LA40M71B/LA46M71B |
LA40F71B/LA46F71B/LA52F71B |
Design
Frequency |
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Horizontal |
30 ~ 61 kHz |
30 ~ 61 kHz |
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Vertical |
100 ~ 120 Hz |
60 ~ 75 Hz |
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Display Color |
16,777,216 colors |
16,777,216 colors |
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PC Resolution |
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Maximum mode |
WXGA, 1366 x 768 @ 60 Hz |
WXGA, 1920 x 1080 @ 60 Hz |
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Input Signal |
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Sync Signal |
H/V Separate, TTL, P. or N. |
H/V Separate, TTL, P. or N. |
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Video Signal |
0.7 Vp-p @ 75ohm |
0.7 Vp-p @ 75ohm |
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Power |
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Consumption |
205W |
210W / 300W / 310W |
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Normal |
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< 1W |
< 1W |
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Power Saving |
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2-5
2 Product Specifications
2-5 Option Specification
Item |
Item Name |
Code.No |
Remark |
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Remote Control |
BN59-00530A |
(40"/46") |
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& |
BN59-00593A |
(52" chinese) |
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Batteries (AAA x 2) |
BN59-00594A |
(52" southeast asian) |
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Power Cord |
3903-000193 |
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3903-000172 (chinese) |
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Cover-Bottom
BN63-02491A (40")
BN63-02624A (46"/52")
Cleaning Cloth |
BN63-01798A |
2-6
5 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 LA40F71B Exploded View
M0013
T0447 M0014
M0146
M0215
M0059
M0146
T0003
T0003
T0003
M0013
5-1
5 Exploded View & Parts List
5-2 LA40F71B Parts list
Location |
Code.No |
Item & Specification |
Q'ty |
SA/SNA |
Remark |
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T0003 |
BN96-03412M |
ASSY COVER P-FRONT;40F71,SO,ABS+PMMA,HB, |
1 |
S.A |
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T0175 |
BN96-03271A |
ASSY SPEAKER P;8ohm,Mosel 32,Left,10W,BA |
1 |
S.A |
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T0175 |
BN96-03272A |
ASSY SPEAKER P;8ohm,Mosel 32,Right,10W,B |
1 |
S.A |
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M0215 |
BN07-00288A |
LCD-PANEL;LTA400HS-LH1,8bit,952*551*51.0 |
1 |
S.A |
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T0447 |
BN96-03421A |
ASSY BRACKET P-PANEL;40M7,EO,MOSEL |
1 |
S.N.A |
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M0014 |
BN94-01119A |
ASSY PCB MAIN;LA40F71BX/* |
1 |
S.A |
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M0013 |
BN96-04227C |
ASSY COVER P-REAR;40F71,SO,-,HIPS,HB,BK5 |
1 |
S.A |
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M0013 |
BN96-03418A |
ASSY STAND P-BASE;40M70,ABS+PMMA,HB,BK23 |
1 |
S.A |
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5-2
5 Exploded View & Parts List
5-3 LA46F71B Exploded View
M0013
M0146 |
M0014 |
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M0215 |
M0059 |
T0447
M0013
M0146
M0146
T0175
M0115
M0013
T0175
5-3
5 Exploded View & Parts List
5-4 LA46F71B Parts list
Location |
Code.No |
Item & Specification |
Q'ty |
SA/SNA |
Remark |
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T0003 |
BN96-03411J |
ASSY COVER P-FRONT;46F71,SO,ABS+PMMA,HB, |
1 |
S.A |
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T0175 |
BN96-03593C |
ASSY SPEAKER P;8ohm,Mosel 46inch,Right,1 |
1 |
S.A |
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T0175 |
BN96-03591C |
ASSY SPEAKER P;8ohm,Mosel 46inch,LEFT,10 |
1 |
S.A |
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M0215 |
BN07-00291A |
LCD-PANEL;LTA460HS-LH1,8bit,1083*627*56. |
1 |
S.A |
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T0447 |
BN96-03420D |
ASSY BRACKET P-PANEL;46F71.SO,FHD MOSEL |
1 |
S.N.A |
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M0014 |
BN94-01119B |
ASSY PCB MAIN;LA46F71BX/* |
1 |
S.A |
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M0013 |
BN96-03417A |
ASSY STAND P-BASE;46M7,-,ABS+PMMA,HB,BK2 |
1 |
S.A |
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M0013 |
BN96-04226C |
ASSY COVER P-REAR;46N71,SO,HIPS,HB,BK500 |
1 |
S.A |
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5-4
11 Disassembly and Reassembly
11 Disassembly and Reassembly
This section of the service manual describes the disassembly and reassembly procedures for the TFT-LCD TV.
WARNING : This monitor contains electrostatically sensitive devices. Use caution when handling these components.
11-1 Disassembly (LA40F71BX)
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.
Description |
Picture Description |
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1.Place monitor face down on cushioned table. Remove screws from the Stand.
Remove stand.
11-1
11 Disassembly and Reassembly
Description |
Picture Description |
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2. Remove screws from the rear-cover and lift up the rear-cover.
3.Disconnet cables from the main and power boards
Remove screws from the side AV jack.
11-2
11 Disassembly and Reassembly
Description |
Picture Description |
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4.Remove screws from the boards and stand BRKT.
5. Lift up the speakers.
Remove screws from the BRKT.
11-3
11 Disassembly and Reassembly
Description |
Picture Description |
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6. Lift up the Panel and remove screws.
7. Lift up the panel BRKT.
11-4
11 Disassembly and Reassembly
11-2 Disassembly (LA46F71BX)
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.
Description |
Picture Description |
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1.Place monitor face down on cushioned table. Remove screws from the Stand.
Remove stand.
11-5
11 Disassembly and Reassembly
Description |
Picture Description |
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2. Remove screws from the rear-cover and lift up the rear-cover.
3.Disconnet cables from the main and power boards
Remove screws from the side AV jack.
11-6
11 Disassembly and Reassembly
Description |
Picture Description |
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4. Remove screws from the boards and stand BRKT.
5.Lift up the speakers.
Remove screws from the BRKT.
11-7
11 Disassembly and Reassembly
Description |
Picture Description |
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6. Lift up the Panel and remove screws.
7. Lift up the panel BRKT.
11-8
11 Disassembly and Reassembly
11-3 Reassembly
Reassembly procedures are in the reverse order of disassembly procedures.
11-9
11 Disassembly and Reassembly
Memo
11-10
4 Troubleshooting
4 Troubleshooting
4-1 First Checklist for Troubleshooting
1.Check the various cable connections first.
-Check to see if there is a burnt or damaged cable.
-Check to see if there is a disconnected cable connection or a connection is too loose.
-Check to see if the cables are connected according to the connection diagram.
2.Check the power input to the Main Board.
3.Check the voltage in and out between the SMPS
Main Board, between the SMPS
INVERTER Board, and between the Main LVDS Boards.
4-1
4 Troubleshooting
4-2 Checkpoints by Error Mode
4-2-1 No Power
LAMP off, power indicator LED blue color?
Yes
Does proper DC 12V appear at CM801?
Yes
Does proper DC A3.3V, A5V appear at C1034, C1032?
Yes
Does proper DC 5V, 3.3V, 2.5V 1.8V appear at C1024, C1102, C1140?
Yes
A power is supplied to set?
No
Check a connection a power cable.
No
Change a Assy PCB Power.
No |
Check a IC109, Q113. |
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Change a main PCB ass'y. |
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No |
Check a IC100, IC114, IC106, IC107, |
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IC108. Change a main PCB ass'y |
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No |
Check a other function. |
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(No picture part) |
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Replace a lcd panel. |
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4-2
4 Troubleshooting
4-2-2 No Video (Analog PC)
Power Indicator is off.
Lamp on, no video.
Yes
Check a PC source and check the connection of DSUB cable?
Yes
Does the signal appear at 1 #R5101, R2094, R5105
(R, G, B) of IC502?
Yes
Check a LVDS cable?
Replace a lcd panel?
No
No
No
Input a analog PC signal and connected cable(DPMS).
PC cable. Change a PC cable. Change a main PCB ass'y.
Please, Call to Samsung Co. LTD.
4-3
4 Troubleshooting
WAVEFORMS
1
4-4
4 Troubleshooting
4-2-3 No Video (Digital-HDMI)
Power Indicator is off.
Lamp on, no video.
Yes
Check the connection of HDMI cable?
Yes
Does the digital data appear at 2 HDMI1 (R6100 ~ R6107)
HDMI2 (R6108 ~ R6115)?
Yes
Does the digital data appear at RA (618 ~ 623)?
Yes
Check a LVDS cable?
Replace a lcd panel?
No
Input a HDMI cable.
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No |
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Check IC604. |
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Change a main PCB ass'y. |
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No
Please, Call to Samsung Co. LTD.
4-5
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