Samsung LN26B350F1, LN32B350F1 Service Manual

LCD-TV

SERVICE

Manual

TFT-LCD TV Contents

Refer to the service manual in the GSPN (see the rear cover) for the more information.

Chassis : G3F26CCN G3F32CCN Model : LN26B350F1 LN32B350F1

1. Precautions

2. Product specications

3. Disassembly and

Reassembly

4. Troubleshootin

5. Exploded View & Part Lis

6. Wiring Diagra

LN26B350F1/LN32B350F1

Contents

1. Precautions .............................................................................................................. 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 specications ............................................................................................ 2-1

2-1. Feature & Specications ................................................................................................. 2-1

2-2. Specication Comparison to Old Models ........................................................................ 2-5

2-3. Accessories .................................................................................................................... 2-6

3. Disassembly and Reassembly ............................................................................... 3-1

3-1. Disassembly and Reassembly ....................................................................................... 3-1

4. Troubleshooting ...................................................................................................... 4-1

4-1. Troubleshooting .............................................................................................................. 4-1

4-2. Alignments and Adjustments ........................................................................................ 4-13

4-3. Factory Mode Adjustments ........................................................................................... 4-14

4-4. White Balance - Calibration .......................................................................................... 4-24

4-5. HOW TO UPGRADE .................................................................................................... 4-26

5. Exploded View & Part List ...................................................................................... 5-1

5-1. LN26B350F1 Exploded View .......................................................................................... 5-1

5-2. LN32B350F1 Exploded View .......................................................................................... 5-3

5-3. LN26B350F1 Parts List .................................................................................................. 5-5

5-4. LN32B350F1 Parts List ................................................................................................ 5-22

6. Wiring Diagram ........................................................................................................ 6-1

6-1. Wiring Diagram ............................................................................................................... 6-1

6-2. Wiring Picture ................................................................................................................. 6-4

6-3. Connector Functions ...................................................................................................... 6-5

6-4. Cables ............................................................................................................................ 6-6

1-1

1. Precautions

1-1. Safety Precautions

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

1-1-1. Warnings

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

Disconnect the AC power and DC power jack before servicing.

1-1-2. Servicing the LCD TV

When servicing the LCD TV, Disconnect the AC line cord from the AC outlet.

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 LCD TV to the user, perform the following safety checks:

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 LCD TV.

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.

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).

With the unit completely reassembled, plug the AC line cord directly into a 120V AC outlet. With the unit’s AC switch

rst 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 identied 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, re and/or other hazards. Product safety is under review continuously and new instructions are issued whenever

appropriate.

DEVICE UNDER TEST

(READING SHOULD) NOT BE ABOVE 0.5mA

LEAKAGE CURRENT TESTER

TEST ALL

EXPOSED METAL

SURFACES

2-WIRE CORD

*ALSO TEST WITH

PLUG REVERSED (USING AC ADAPTER PLUG AS REQUIRED)

EARTH

GROUND

Figure 1-1. Leakage Current Test Circuit

1-2

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 conict between the following servicing precautions and any of the

safety precautions, always follow the safety precautions.

1-2-1 General Servicing Precautions

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.

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.

Check the insulation between the blades of the AC plug and accessible conductive parts (examples: metal panels, input terminals and earphone jacks).

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 theblades 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.

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. Electrostatically Sensitive Devices (ESD) 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 eld-effect

transistors. The following techniques will reduce the incidence of component damage caused by static electricity.

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 LCD TV.

After removing an ESD-equipped assembly, place it on a conductive surface such as aluminum foil to prevent accumulation of an electrostatic charge.

Do not use freon-propelled chemicals. These can generate electrical charges sufcient to damage ESDs.

Use only a grounded-tip soldering iron to solder or desolder ESDs.

Use only an anti-static solder removal device. Some solder removal devices not classied as “anti-static” can generate electrical charges sufcient to damage ESDs.

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.

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.

Minimize body motions when handling unpackaged replacement ESDs. Motions such as brushing clothes together, or lifting your foot from a carpeted oor can generate enough static electricity to damage an ESD.

1-3

1. Precautions

1-4. Installation Precautions

For safety reasons, more than a people are required for carrying the product.

Keep the power cord away from any heat emitting devices, as a melted covering may cause re or electric shock.

Do not place the product in areas with poor ventilation such as a bookshelf or closet. The increased internal

temperature may cause re.

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 re or electric shock.

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 re or electric

shock.

Keep the antenna far away from any high-voltage cables and install it rmly. Contact with the highvoltage cable or the antenna falling over may cause re or electric shock.

When installing the product, leave enough space (0.1m) between the product and the wall for ventilation purposes.

A rise in temperature within the product may cause re.

1-4

1. Precautions

Memo

2-1

2. Product specications

2-1. Feature & Specications

Model LN26B350F1

Feature

RF, 1-HDMI, 1-HDMI/DVI, 1-Component, 1-AV, D-sub Brightness : 450cd/m

Contrast Ratio : 3000:1 Response time : 8ms Dynamic contrast, PVA, TN

PIP(in HDMI 1, 2, 3, Component 1, PC Mode and Sub picture is available only in TV analog mode)

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Specications

Item Description

LCD Panel TFT-LCD panel, T260XW02 VS, AU26X2S,RGB vertical stripe, 1366 x 768 pixels,

26-Inch viewable, Normally Black, pixel pitch 0.4215 mm

Scanning Frequency Horizontal : 43 kHz ~ 53 kHz (Automatic)

Vertical : 47 Hz ~ 63 Hz (Automatic)

Display Colors 16.7 million colors

Maximum resolution Horizontal : 1366 Pixels

Vertical : 768 Pixels

Input Signal Analog 0.7 Vp-p ± 5% positive at 75Ω , internally terminated

Input Sync Signal H/V Separate, TTL, P. or N.

Maximum Pixel Clock rate 85.5MHz

Active Display Horizontal/Vertical 575.769 (H) x 323.712(V) mm

AC power voltage & Frequency AC 110V ~ 240V, 50/60Hz

Power Consumption <80 W ( < 1W, stand by )

Dimensions

664.8 x 214.8 x 496.4mm (with stand)

664.8 x 75.1 x 452.8mm (without stand)

Set (W x D x H)

Weight (Set) 7.16kg (with stand)

6.58kg (without stand)

TV System Tuning Frequency Synthesize (Refer to detailed Frequency Table)

System PAL, SECAM, NT4.43,NT3.58

Sound BG, DK, M, I

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

Operating Humidity : 10% ~ 80%, non-condensing Storage temperature : -13˚F ~ 113˚F (-25˚C ~ 45˚C) Storage Humidity : 5% ~ 95%, non-condensing

Audio spec. - MAX Internal speaker Out : Right => 5W, Left => 5W

- BASS Control Range : -8 dB ~ + 8dB

- TREBLE Control Range : -8 dB ~ +8 dB

- Headphone Out : 10 mW MAX

- Output Frequency : RF : 80 Hz ~ 15 kHz

A/V : 80 Hz ~ 20 kHz

2-2

2. Product specications

Model LN32B350F1

Feature

RF, 1-HDMI, 1-HDMI/DVI, 1-Component, 1-AV, D-sub Brightness : 450cd/m

Contrast Ratio : 3000:1 Response time : 8ms Dynamic contrast, Super-PVA

PIP(in HDMI 1, 2, 3, Component 1, PC Mode and Sub picture is available only in TV analog mode)

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Specications

Item Description

LCD Panel TFT-LCD panel, T315XW02 VV, AU31X2V, RGB vertical stripe,1366 x 768 pixels,

32-Inch viewable, Normally Black, pixel pitch 0.51075 mm

Scanning Frequency Horizontal : 43 kHz ~ 53 kHz (Automatic)

Vertical : 47 Hz ~ 63 Hz (Automatic)

Display Colors 16.7 million colors

Maximum resolution Horizontal : 1366 Pixels

Vertical : 768 Pixels

Input Signal Analog 0.7 Vp-p ± 5% positive at 75Ω , internally terminated

Input Sync Signal H/V Separate, TTL, P. or N.

Maximum Pixel Clock rate 310MHz

Active Display Horizontal/Vertical 697.685 (H) x 392.256 (V) mm

AC power voltage & Frequency AC 110V ~ 240V, 50/60Hz

Power Consumption <110 W ( < 1W, stand by )

Dimensions

798.8 x 217.8 x 573.4mm (with stand)

798.8 x 75.6 x 529.8mm (without stand)

Set (W x D x H)

Weight (Set) 10.04kg (with stand)

9.3kg (with stand)

TV System Tuning Frequency Synthesize (Refer to detailed Frequency Table)

System PAL, SECAM, NT4.43,NT3.58

Sound BG, DK, M, I

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

Operating Humidity : 10% ~ 80%, non-condensing Storage temperature : -13˚F ~ 113˚F (-25˚C ~ 45˚C) Storage Humidity : 5% ~ 95%, non-condensing

Audio spec. - MAX Internal speaker Out : Right => 10W, Left => 10W

- BASS Control Range : -8 dB ~ + 8dB

- TREBLE Control Range : -8 dB ~ +8 dB

- Headphone Out : 10 mW MAX

- Output Frequency : RF : 80 Hz ~ 15 kHz

A/V : 80 Hz ~ 20 kHz

2-3

2. Product specications

CHANNEL FREQUENCY TABLE

OUTPUT FREQUENCY : ANALOG fv:45.75MHz, fs:41.25MHz DIGITAL Fc:44MHz

TUNING STEP SIZE : FIRST PLL 250KHz SECOND PLL 62.5KHz

OSD CH NO AIR CH NO CH NO CH NO

Air-DTV Air-NTSC BAND Cable STD BAND Cable HRC Cable IRC 1 1 A-8 72. 00 A-8 73. 25 2 2 57 55. 25 V-L 2 55. 25 V-L 2 54. 00 2 55. 25 3 3 63 61.25 V-L 3 61.25 V-L 3 60.00 3 61.25 4 4 69 67.25 V-L 4 67.25 V-L 4 66.00 4 67.25 5 5 79 77. 25 V-L 5 77. 25 V-L A-7 78. 00 A-7 79. 25 6 6 85 83.25 V-L 6 83.25 V-L A-6 84.00 A-6 85.25 7 7 177 175. 25 V-H 7 175. 25 V-H 7 174. 00 7 175. 25 8 8 183 181.25 V-H 8 181.25 V-H 8 180.00 8 181.25 9 9 189 187.25 V-H 9 187.25 V-H 9 186.00 9 187.25

10 10 195 193.25 V-H 10 193.25 V-H 10 192.00 10 193.25 11 11 201 199.25 V-H 11 199.25 V-H 11 198.00 11 199.25 12 12 207 205.25 V-H 12 205.25 V-H 12 204.00 12 205.25 13 13 213 211.25 V-H 13 211.25 V-H 13 210.00 13 211.25 14 14 473 471. 25 UHF A 121. 25 MID A 120. 00 A 121. 25 15 15 479 477.25 UHF B 127.25 MID B 126.00 B 127.25 16 16 485 483.25 UHF C 133.25 MID C 132.00 C 133.25 17 17 491 489.25 UHF D 139.25 MID D 138.00 D 139.25 18 18 497 495.25 UHF E 145.25 MID E 144.00 E 145.25 19 19 503 501.25 UHF F 151.25 MID F 150.00 F 151.25 20 20 509 507.25 UHF G 157.25 MID G 156.00 G 157.25 21 21 515 513.25 UHF H 163.25 MID H 162.00 H 163.25 22 22 521 519.25 UHF I 169.25 MID I 168.00 I 169.25 23 23 527 525.25 UHF J 217. 25 SUPER J 216. 00 J 217. 25 24 24 533 531.25 UHF K 223.25 SUPER K 222.00 K 223.25 25 25 539 537.25 UHF L 229.25 SUPER L 228.00 L 229.25 26 26 545 543.25 UHF M 235.25 SUPER M 234.00 M 235.25 27 27 551 549.25 UHF N 241.25 SUPER N 240.00 N 241.25 28 28 557 555.25 UHF O 247.25 SUPER O 246.00 O 247.25 29 29 563 561.25 UHF P 253.25 SUPER P 252.00 P 253.25 30 30 569 567.25 UHF Q 259.25 SUPER Q 258.00 Q 259.25 31 31 575 573.25 UHF R 265.25 SUPER R 264.00 R 265.25 32 32 581 579.25 UHF S 271.25 SUPER S 270.00 S 271.25 33 33 587 585.25 UHF T 277.25 SUPER T 276.00 T 277.25 34 34 593 591.25 UHF U 283.25 SUPER U 282.00 U 283.25 35 35 599 597.25 UHF V 289.25 SUPER V 288.00 V 289.25 36 36 605 603.25 UHF W 295.25 SUPER W 294.00 W 295.25 37 37 611 609.25 UHF AA 301.25 HYPER AA 300.00 AA 301.25 38 38 617 615.25 UHF BB 307.25 HYPER BB 306.00 BB 307.25 39 39 623 621.25 UHF CC 313.25 HYPER CC 312.00 CC 313.25 40 40 629 627.25 UHF DD 319.25 HYPER DD 318.00 DD 319.25 41 41 635 633.25 UHF EE 325.25 HYPER EE 324.00 EE 325.25 42 42 641 639.25 UHF FF 331.25 HYPER FF 330.00 FF 331.25 43 43 647 645.25 UHF GG 337.25 HYPER GG 336.00 GG 337.25 44 44 653 651.25 UHF HH 343.25 HYPER HH 342.00 HH 343.25 45 45 659 657.25 UHF II 349.25 HYPER II 348.00 II 349.25 46 46 665 663.25 UHF JJ 355.25 HYPER JJ 354.00 JJ 355.25 47 47 671 669.25 UHF KK 361.25 HYPER KK 360.00 KK 361.25 48 48 677 675.25 UHF LL 367.25 HYPER LL 366.00 LL 367.25 49 49 683 681.25 UHF MM 373.25 HYPER MM 372.00 MM 373.25 50 50 689 687.25 UHF NN 379.25 HYPER NN 378.00 NN 379.25 51 51 695 693.25 UHF OO 385.25 HYPER OO 384.00 OO 385.25 52 52 701 699.25 UHF PP 391.25 HYPER PP 390.00 PP 391.25 53 53 707 705.25 UHF QQ 397.25 HYPER QQ 396.00 QQ 397.25 54 54 713 711.25 UHF RR 403.25 HYPER RR 402.00 RR 403.25 55 55 719 717.25 UHF SS 409.25 HYPER SS 408.00 SS 409.25 56 56 725 723.25 UHF TT 415.25 HYPER TT 414.00 TT 415.25 57 57 731 729.25 UHF UU 421.25 HYPER UU 420.00 UU 421.25 58 58 737 735.25 UHF VV 427.25 HYPER VV 426.00 VV 427.25 59 59 743 741.25 UHF WW 433.25 HYPER WW 432.00 WW 433.25 60 60 749 747.25 UHF XX 439.25 HYPER XX 438.00 XX 439.25 61 61 755 753.25 UHF YY 445.25 HYPER YY 444.00 YY 445.25 62 62 761 759.25 UHF ZZ 451.25 HYPER ZZ 450.00 ZZ 451.25 63 63 767 765.25 UHF AAA 457.25 HYPER AAA 456.00 AAA 457.25 64 64 773 771.25 UHF BBB 463.25 HYPER BBB 462.00 BBB 463.25 65 65 779 777.25 UHF CCC 469.25 ULTRA CCC 468.00 CCC 469.25 66 66 785 783.25 UHF DDD 475.25 ULTRA DDD 474.00 DDD 475.25 67 67 791 789.25 UHF EEE 481.25 ULTRA EEE 480.00 EEE 481.25 68 68 797 795.25 UHF FFF 487.25 ULTRA FFF 486.00 FFF 487.25 69 69 803 801.25 UHF GGG 493.25 ULTRA GGG 492.00 GGG 493.25

2-4

2. Product specications

OSD CH NO AIR CH NO CH NO CH NO

Air-DTV Air-NTSC BAND Cable STD BAND Cable HRC Cable IRC

70 70 HHH 499.25 ULTRA HHH 498.00 HHH 499.25 71 71 III 505.25 ULTRA III 504.00 III 505.25 72 72 JJJ 511.25 ULTRA JJJ 510.00 JJJ 511.25 73 73 KKK 517.25 ULTRA KKK 516.00 KKK 517.25 74 74 LLL 523.25 ULTRA LLL 522.00 LLL 523.25 75 75 MMM 529.25 ULTRA MMM 528.00 MMM 529.25 76 76 NNN 535.25 ULTRA NNN 534.00 NNN 535.25 77 77 OOO 541.25 ULTRA OOO 540.00 OOO 541.25 78 78 PPP 547.25 ULTRA PPP 546.00 PPP 547.25 79 79 79 553.25 ULTRA 79 552.00 79 553.25 80 80 80 559.25 ULTRA 80 558.00 80 559.25 81 81 81 565.25 ULTRA 81 564.00 81 565.25 82 82 82 571.25 ULTRA 82 570.00 82 571.25 83 83 83 577.25 ULTRA 83 576.00 83 577.25 84 84 84 583.25 ULTRA 84 582.00 84 583.25 85 85 85 589.25 ULTRA 85 588.00 85 589.25 86 86 86 595.25 ULTRA 86 594.00 86 595.25 87 87 87 601.25 ULTRA 87 600.00 87 601.25 88 88 88 607.25 ULTRA 88 606.00 88 607.25 89 89 89 613.25 ULTRA 89 612.00 89 613.25 90 90 90 619.25 ULTRA 90 618.00 90 619.25 91 91 91 625.25 ULTRA 91 624.00 91 625.25 92 92 92 631.25 ULTRA 92 630.00 92 631.25 93 93 93 637.25 ULTRA 93 636.00 93 637.25 94 94 94 643.25 ULTRA 94 642.00 94 643.25 95 95 A-5 91. 25 FM A-5 90. 00 A-5 91. 25 96 96 A-4 97.25 FM A-4 96.00 A-4 97.25 97 97 A-3 103.25 FM A-3 102.00 A-3 103.25 98 98 A-2 109.25 MID A-2 108.00 A-2 109.25

99 99 A-1 115.25 MID A-1 114.00 A-1 115.25 100 100 100 649. 25 ULTRA 100 648. 00 100 649. 25 101 101 101 655.25 ULTRA 101 654.00 101 655.25 102 102 102 661.25 ULTRA 102 660.00 102 661.25 103 103 103 667.25 ULTRA 103 666.00 103 667.25 104 104 104 673.25 ULTRA 104 672.00 104 673.25 105 105 105 679.25 ULTRA 105 678.00 105 679.25 106 106 106 685.25 ULTRA 106 684.00 106 685.25 107 107 107 691.25 ULTRA 107 690.00 107 691.25 108 108 108 697.25 ULTRA 108 696.00 108 697.25 109 109 109 703.25 ULTRA 109 702.00 109 703.25 110 110 110 709.25 ULTRA 110 708.00 110 709.25 111 111 111 715.25 ULTRA 111 714.00 111 715.25 112 112 112 721.25 ULTRA 112 720.00 112 721.25 113 113 113 727.25 ULTRA 113 726.00 113 727.25 114 114 114 733.25 ULTRA 114 732.00 114 733.25 115 115 115 739.25 ULTRA 115 738.00 115 739.25 116 116 116 745.25 ULTRA 116 744.00 116 745.25

. .

. . .

. . . .

. .

. . .

. . . .

125 125 125 799.25 ULTRA 125 798.00 125 799.25

. . . . . . . . .

2-5

2. Product speci cations

2-2. Speci cation Comparison to Old Models

Model B350(LN26/32B350F1) Coral (LA26/32A450C1)

Design

Display Type

LCD TV LCD TV

Built-in Tuner

O O

Resolution

1366 x 768 1366 x 768

LCD Panel

TFT LCD Panel 50Hz TFT LCD Panel 50Hz

Screen Size

26”/32” 26”/32”

Picture ratio

16 : 9 16 : 9

Dimensions (W x H x D)

664.8 x 214.8 x 496.4mm (with stand)

664.8 x 75.1 x 452.8mm (without stand)

664.8 x 214.8 x 496.4mm (with stand)

664.8 x 75.1 x 452.8mm (without stand)

669.8 x 215.9 x 500.4mm (with stand)

669.8 x 75.4 x 450.6mm (without stand)

799.6 x 252 x 576.6mm (with stand)

799.6 x 79 x 525.3mm (without stand)

Weight

6.5kg_with stand

5.1kg_without stand

11.4kg_with stand

9.1kg_without stand

9.7kg

13.1kg

Brightness

450 nit 450 nit

Contrast Ratio

3000:1 2000:1

Picture Enhacer

DNIe(Lola3) DNIe (FBE3)

Equalizer

O O

Auto Motion Plus 100Hz

X X

Surround Sound

2 Way SRS TruSurround Dolby Digital 3 Way SRS TruSurround Dolby Digital

Speaker Output

5W + 5W(26”, 32”) 5W + 5W(26”) / 10W + 10W(32”)

Antenna 1 1

2-6

2. Product specications

2-3. Accessories

Product Description Code. No Remark

Remote Control & Batteries

(AAA x 2)

BN59-00880A

Samsung Electronics

Service center

Power Cord 3903-000172

Cover-Bottom BN63-05618B

Owner’s Instructions BN68-02101H

Warranty Card / Registration

Card / Safety Guide Manual

(Not available in all locations)

AA68-03184A

Stand Screw x 4 6002-001294

Stand

BN90-02198A(26”) BN90-02197A(32”)

3-1

3. Disassembly and Reassembly

This section of the service manual describes the disassembly and reassembly procedures for the LN26B350F1 LCD TV.

WARNING: This LCD TV contains electrostatically sensitive devices. Use caution when handling these components.

3-1. Disassembly and Reassembly

Cautions: 1. Disconnect the LCD TV from the power source before disassembly.

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

Description Picture Description Screws

1. Place the TV face down on cushioned table. Remove the screws from the Stand. Remove stand.

x 10

x 4

3-2

3. Disassembly and Reassembly

Description Picture Description Screws

2. Lift up rear cover and remove the stand.

3. Remove Screw from the stand BRKT and top BRKT. Lift up the stand BRKT and top.

3-3

3. Disassembly and Reassembly

Description Picture Description Screws

4. Disonnect cable from the boards.

5. Lift up the LCD panel.

Reassembly procedures are in the reverse order of disassembly procedures.※

4-1

4. Troubleshooting

4-1. Troubleshooting

Check the various cable connections rst.

• Check to see if there is a burnt or damaged cable.

• Check to see if there is a disconnected or loose cable connection.

• Check to see if the cables are connected according to the connection diagram.

Check the power input to the Main Board. Check internal Pattern lola3 if fhere is some picture noise. Factory mode(Info-MENU-Mute-power on → Advanced menu → MST69A84HQ → Pattern select : Off Press right button of Remocon. If lola3 NG, Chahge the Main Board.

4-2

4. Troubleshooting

4-1-1. No Power

Symptom

The LEDs on the front panel do not work when connecting the power cord.

The SMPS relay does not work when connecting the power cord.

The units appears to be dead.

Major

checkpoints

The IP relay or the LEDs on the front panel does not work when connecting the power cord if the cables are

improperly connected or the Main Board or SMPS is not functioning. In this case, check the following:

Check the internal cable connection status inside the unit. Check the fuses of each part.

Check the output voltage of SMPS.

Replace the Main Board.

Diagnostics

Does proper DC A3.3V

appear at C1031?

Check a IC1003

Change a main PCB ass’y

Yes

Does proper DC 1.8V, 1.25V appear at

R1081, C1045?

Yes

LAMP off, power indicator

LED red color?

Yes

Check a connection a power cable.

Does proper DC5V appear at

pin 9 of CN1001?

Yes

A power is supplied to set?

Change a Assy PCB Power.

Check a IC1008, IC1004

Change a main PCB ass’y

Caution

Make sure to disconnect the power before working on the IP board.

4-3

4. Troubleshooting

4-1-2. No Video (Analog PC signal)

Symptom Audio is normal but no picture is displayed on the screen.-

Major

checkpoints

Check the PC source Check the M-star

This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.

Diagnostics

PC cable change a PC cable.

Change a main PCB ass’y.

Does the digital data appear at the

output of LVDS Cable?

Power Indicator is off.

Lamp on, no video.

Check a PC source and check

the connection of DSUB cable?

Check a IC6003.

Change a main PCB ass’y

Yes

Check a LVDS cable?

Replace a lcd panel?

Does the signal appear at R6034,

R6035, R6034, R6032,

R6033(R,G,B,H,V) of IC6003?

Please, Call to Samsung Co. LTD.

Yes

Input a analog PC signal and

connected cable(DPMS).

Yes

Caution Make sure to disconnect the power before working on the IP board.

4-4

4. Troubleshooting

WAVEFORMS

R,G,B Output Signal

4-5

4. Troubleshooting

4-1-3. No Video (HDMI - Digital Signal)

Symptom Audio is normal but no picture is displayed on the screen.-

Major

checkpoints

Check the HDMI source

Check the M-star

This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.

Diagnostics

Does the digital data appear at

R6021~R6024, R6026~R6028,

R6010~R6017?

Power Indicator is off.

Lamp on, no video.

Check the connection

of HDMI cable?

Check a IC6003.

Change a main PCB ass’y.

Check a IC6003.

Change a main PCB ass’y.

Does the digital data appear at

output of LVDS Cable?

Check the LVDS cable?

Replace the LCD panel?

Please, Contact Tech support

Yes

Input a HDMI cable.

Yes

Caution Make sure to disconnect the power before working on the IP board.

4-6

4. Troubleshooting

WAVEFORMS

Digital Output Data

Signal of HDMI(Data)

4-7

4. Troubleshooting

4-1-4. No Video (Tuner_CVBS)

Symptom Audio is normal but no picture is displayed on the screen.-

Major

checkpoints

Check the Tuner CVBS source

Check the M-star

This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.

Diagnostics

Check a B+ voltage (#2 of Tuner) 5V,

change a main PCB ass’y.

Power Indicator is off.

Lamp on, no picure.

Yes

Change a main PCB ass’y.

Does the signal appeat #8 of TU4001?

Does the Signal appear at c6025

of IC6003?

Check the LVDS cable?

Replace the LCD panel?

Please, Call to Samsung Co. LTD.

Yes

Connect the RF cable and

check RF signal.

Yes

Caution Make sure to disconnect the power before working on the IP board.

4-8

4. Troubleshooting

WAVEFORMS

CVBS Output Signal

Tuner_CVBS Output Signal

4-9

4. Troubleshooting

4-1-5. No Picture (Video_CVBS)

Symptom Audio is normal but no picture is displayed on the screen.-

Major

checkpoints

Check the Video Source

Check the M-star

This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.

Diagnostics

Check a connection harness.

Power Indicator is off.

Lamp on, no picture.

Yes

Does the signal appear at C6018,

C6021 of IC6003?

Check a LVDS cable ?

Replcelcd panel?

Please, Call to Samsung Co. LTD.

Yes

Check a A/V cable and video signal.

Yes

Caution Make sure to disconnect the power before working on the IP board.

4-10

4. Troubleshooting

WAVEFORMS

CVBS Output Signal

4-11

4. Troubleshooting

4-1-6. No Sound

Symptom Audio is normal but no picture is displayed on the screen.-

Major

checkpoints

Check the RF Source

Check the M-star

This may happen when the LVDS cable connecting the Main Board and the Panel is disconnected.

Diagnostics

Check a connection harness and

headphone jack/side AV.

Check Sound Processor

IC6003(M-star)

Picture is display, no sound.

Check a B12V Line.

Change a main PCB ass’y

Does the signal appear at R2008,

R2009,R2010(AUSD,AUWS,AUSCK)

of IC2002?

Check the DC 13V

id IC2002?

Change a main PCB ass’y.

Does the signal appear at

L2001,L2002 near IC2002?

Replace the speaker ass’y?

Yes

Connect a sound cable.

control a volume.

Yes

Caution Make sure to disconnect the power before working on the IP board.

4-12

4. Troubleshooting

WAVEFORMS

The Signal are Inputed to IC1201

The Signal are Inputed to IC1202

4-13

4. Troubleshooting

4-2. Alignments and Adjustments

4-2-1. General Alignment Instuction

Usually, a color LCD-TV needs only slight touch-up adjustment upon installation. Check the basic characteristics such as height, horizontal and vertical sync.

Use the specied test equipment or its equivalent.

Correct impedance matching is essential.

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.

Connect the TV only to an AC power source with voltage and frequency as specied on

the backcover nameplate.

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.

To protect against shock hazard, use an isolation transformer.

4-14

4. Troubleshooting

4-3. Factory Mode Adjustments

4-3-1 Entering Factory Mode

To enter ‘Service Mode’ Press the remote -control keys in this sequence :

- If you do not have Factory remote - control

MENUINFO MUTE Power on

- If you have Factory remote - control

DISPLAYPICTURE ON FACTORY

- 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)

4-3-2 Panel Check

You have to check Panel Maker Because of different adjustments as follows. First of all, Check the label rating!

1) Label Rating File

- LCD PANEL MARK A:ACER(AUO) S : SEC C : CMO

* If not printed you could consider S(sec) panel mark.

4-15

4. Troubleshooting

4-3-3 Factory Data

Option

Factory Reset OPTION RANGE

Type 32D_AG 22D_T,22I_T,22L_T,26D_AG, 26L_AG, 32L_AG,

32D_AG, 37L_AG, 40L_AG, 32A_AG_F, 32L_AG_F, 32D_AG_F, 32I_AG_F, 37L_AG_F, 37D_AG_F, 40A_ AG_F, 40L_AG_F, 40D_AG_F, 46A_AG_F, 46L_AG_F, 46D_AG_F, 32A_AG_FF, 32L_AG_FF, 32D_AG_FF, 40A_AG_FF, 40L_AG_FF, 40D_AG_FF, 46A_AG_FF, 46D_AG_FF, 52A_AG_FF, 52L_AG_FF

Model B550_FBE PB350, PB430, PB450, PB550, PB550_FBE, L_

BASIC, LB350, LB360, LB360_22, LB450, LB450_22, LB460, LB480, LB480_22, LB530, LB550, B550_FBE, LB622, LB550_FBE_NM

Tuner Select SEMCO SEMCO, XUGUANG

DDR Samsung Samsung

Ch Table SUWON SUWON, SESK, SHE, TTSEC, SEIN, SDMA, TSED,

SAVINA, SIEL, TSE

Local Set East Asia Vietnam, Philippines, China, India, Iran, Israel, Middle

Asia, East Asia, Thailand, Africa

P&P Language English English, China, French, Arabic, Persia, Hebrew,

Russian

PDP Group P55A_50SP P55A_50SP

ADC/WB

ADC

AV Calibration

Comp Calibration PC Calibration

HDMI Calibration

Success Success Success Success

Success/Failure Success/Failure Success/Failure Success/Failure

ADC Target

1st_AV_Low 1st_AV_High 1st_AV_Delta

1st_Comp_Low

1st_Comp_High

1st_Comp_Delta 1st_PC_Low

1st_PC_High

1st_PC_Delta 2nd_Low

2nd_High

2nd_Delta

234 3

234 3 1

235

3 2

235

0 ~ 255 0 ~ 255 0 ~ 255 0 ~ 255 0 ~ 255 0 ~ 255 0 ~ 255 0 ~ 255 0 ~ 255 0 ~ 255 0 ~ 255 0 ~ 255



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