Samsung Cl21b501hlmxzs Chasis Kscb(n)_cb5h

SERVICE Manual

COLOR TELEVISIONChassis : KSCB(N)_CB5HModel : CL21B501HLMXZS

COLOR TELEVISION CONTENTS

1. Precaution

2. Product Specification

3. Disassembly & Reassembly

4. Troubleshooting

5. Exploded View & Part List

6. Wiring Diagram

7. Schematic Diagram

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

CL21B501HL

Disassembly & Reassembly

Samsung Electronics 3-1

3. Disassembly&Reassembly3-1 OverallDisassembly&Reassembly

3-1-1 DisassemblingtheCabinetPart Name Description Description Photo

Back Cover

Remove the 7 screws fixing the Back Cover & Terminal Board. : RH,+,-,2S,M3,L6,ZPC(WHT), SWRCH18A,-

Tap the Back Cover 2 or 3 times and pull the cover and remove it.

Since there is a danger of injury from the remaining current and of damaging the product due to static electricity, make sure to remove the power cord and wait for a moment so that the remaining current is discharged completely before disassembling the product.


3-2 Samsung Electronics

3-1-2 DisassemblingtheCRTandChassisPart Name Description Description Photo

Chassis Holder

Separate the Assy Holder chassis from the Front Cabinet.

Pull the Holder Chassis while pushing the catch up.

If you pull it with excessive power, it may cause damage to the catch or connector.Therefore, pull it until the catch is out of the hole.

Pull the chassis while pushing theclip fixing the Front Cabinet and

the Holder Chassis.

Separate the CRT connection, the TBC wire,and the the speaker connection.

Since there is a hinge fixing the Wire Connector and Connector Header, if the wire is pulled with excessive power, it may damage the catch or connector. Therefore, pull it only after pressing the hinge down completely.


the Holder Chassis.

Separate the D-Coil, DY-Cable and power cord from the Front Cabinet and Main Board.

Separate the power cord, DY-Cable by pushing the fixing catch to the side and pulling the wire up.


the Holder Chassis.

Separate the CRT Assy from the CRT.

Separate the TBC wire, GND cables from the CRT Assy sequentially.


the Holder Chassis.



Part Name Description Description PhotoChassis Holder

Separate the cable connecting the FBT and CRT from the CRT.

Since a high voltage current resides inside the CRT, do not to touch the CRT hole with metal or your body when separating the cable.

3-1-3 DisassemblingtheCRTAssyPart Name Description Description Photo

CRT Assy

Separate the cables connecting the Main Assy and the CRT Assy.

Pull the wires whilepressing on the fixing clip.

Separate the wires from the FBT of the Main Board and the CRT Assy.

To separate thick wire, pull the wires while pressing the push-type clip at the connector.

Take care when separating the wires because pulling the wires by force may damage the socket. In addition, separate the wires on a flat and clean surface so as to prevent scratching of the material and the PCB. Pull the wires while

pressing on the fixing clip.

MEMO


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.

GSPN (Global Service Partner Network)

Area Web SiteNorth America service.samsungportal.comLatin America latin.samsungportal.comCIS cis.samsungportal.comEurope europe.samsungportal.comChina china.samsungportal.comAsia asia.samsungportal.comMideast & Africa mea.samsungportal.com

Samsung Electronics Co.,Ltd. Jun. 2009 Printed in Korea AA82-05984A

Table of Contents

1. Precaution1-1 Safety Precautions ......................................................................................................................................................1-11-2 Servicing Precautions ..................................................................................................................................................1-31-3 Static Electricity Precautions .......................................................................................................................................1-41-4 Installation Precautions ...............................................................................................................................................1-5

2. Product Specification2-1 Product Specification ...................................................................................................................................................2-12-2 Specifications Analysis ................................................................................................................................................2-22-3 Accessories .................................................................................................................................................................2-3

3. Disassembly & Reassembly3-1 Overall Disassembly & Reassembly ............................................................................................................................3-1

4. Troubleshooting4-1 Troubleshooting ...........................................................................................................................................................4-14-2 Adjustment ...................................................................................................................................................................4-14

5. Exploded View & Part List5-1 CL21B501HLMXZS Exploded View ............................................................................................................................5-15-2 CL21B501HLMXZS Electrical Part List .......................................................................................................................5-3

6. Wiring Diagram6-1 Overall Wiring ..............................................................................................................................................................6-16-2 Pin Connection ............................................................................................................................................................6-2

7. Schematic Diagram7-1 Circuit Description .......................................................................................................................................................7-17-2 Schematic Diagram .....................................................................................................................................................7-5

Troubleshooting


4. Troubleshooting4-1 Troubleshooting

4-1-1 FirstChecklistforTroubleshooting

1. Power LED: Check that the LED works when the power cord is connected to a 90-264 wall outlet.

2. LED Indicators: See table 4-1-2 Basic Troubleshooting: LED Diagnosis on the Front Panel.

3. In case of a power failure or abnormal screen, check the following items. Check that the power cord is correctly connected to a 90-264 wall outlet. Check that the Master Switch has been pressed. Ch eck that the transmitter is turned on. Check that transmitter device selection is set to TV. Check that the signal cable is properly connected. Check that channel setting has been set.

Troubleshooting


4-1-2 CheckpointsbyErrorMode

1. TroubleshootingSummaryProblem Solution

The power does not turn on. Check if the power cord is properly connected.Air broadcasting does not work. Check if the antenna is properly installed.Cable broadcasting does not work. Subscribe to a local cable broadcasting firm and get support.

Satellite broadcasting does not work Install a satellite antenna (Parabola) and connect it to the TV.

2. Menu&RemoteControlProblem Solution

The remote control does not work.

PresstheSelectDevicebuttontoselecttheTVorexternaldevice. Replacethebatteryoftheremotecontrolwithanewone. Insertthebatterymakingsurethepolarity(+,-)iscorrect. Checkiftheangleorthedistanceissufficient,orifthereisany

interference between the product and the remote control. Makesuretheuserhaspressedthecorrectbutton. ToavoiddirectsunlighttothereceivingpaneloftheTV,removeany

indoor lighting or change the location of the TV. CheckifthepowerswitchatthebackleftoftheTVisturnedon..

Cannot change the channel with the remote control. PresstheSelectDevicebuttontoselecttheTV. Changethechannelusingtheremotecontrolofthecableorsatellite

receiver.

Cannot select an A/V channel.Press the source button and check if the AV item is grayed out. When the AV item is grayed out, you cannot select an A/V channel. Check if the connector is properly connected.

Cannot select a menu. Check if the menu is grayed out. If a menu is grayed out, it cannot be selected.

Troubleshooting


3. ScreenProblem Solution

The screen is black and there is no sound. Checkifthepowercordisproperlyconnected. Turnonthepower. SelectanAVchannelthatcorrespondstotheexternaldevice.

Only the screen is blank/it is dark or too bright. Adjust the screen brightness.Thescreenisblue/theexternalchannelisnotdisplayed.

Checkiftheconnectorisproperlyinstalled. SelectanAVchannelthatcorrespondstotheexternaldevice.

The screen overlaps (double/triple). Checkiftheantennaisproperlyinstalled. Adjusttheposition,angleordirectionoftheantenna.

The screen is snowy or unclear. The picture quality gets worse when it is windy

Checkiftheantennahasbeenbentormovedbythewind. Checktheantennaforitslifetime.

(Normally 3 - 5 years, 1-2 years near the coast)Dotted or semi-dotted lines are displayed on the screen.

Install the antenna as far away from the road as possible.

The screen is black and white. Adjustthecolordensity. Checkiftheconnectorisproperlyinstalled.

The colors of the screen are odd/strange. Adjust the color tones.

Unusual lines appear on the screen. Keep the antenna away from the power cord or connectors if possible.

Unusual lines appear on the screen when watching or recording to video.

Keep the video player as far away from the TV as possible.

4. SoundProblem Solution

There is no sound. Increasethevolume. PresstheMutebutton.

The sound is very low. Increasethevolume. SettheautovolumecontroltoON.There is a lot of noise. Keep the antenna away from the power cord or connectors if possible.The selected language does not appear. PresstheMultiplexbuttontoselecttheTV.

Troubleshooting


5. ChannelProblem Solution

There are no channels available. Checkiftheantennaisproperlyinstalled. PresstheAutoChannelbuttontostorechannels. Contactyourlocalbroadcastingservicestation.

Some channels are not available.

Adjusttheposition,angleordirectionoftheantenna. ActivatetheReceptionSensitivityBoostfeature. Contactyourlocalbroadcastingservicestation. UsethenumberkeystoselectaspecificchannelandpressStore/Clear

to memorize it.Only the UHF (14-69) channels are not available. Check if the antenna is able to receive UHF signals.

6. OthersProblem Solution

The TV makes a noise as if something is dropping inside.

ThisnoisemayoccurwhentheplasticmaterialinsidetheTVexpandsorcontracts according to the seasonal temperature or humidity. This is like the noise from a furniture/cabinet/sink unit, and there is no need for concern.

Troubleshooting


7. BasicTroubleshooting:DiagnosisofLEDontheFrontPanel

LED

: Light is On: Light is Blinking: Light is Off

Power Description This happens when the TV have turned on or the power cord is disconnected.

This happens when the power cord is connected.

The LED blinks, while the unit is starting up or the unit is turning off.

8. TroubleshootingbytheChecksum Diagnosisoftroublebythechecksumisneitherreliablenorconvenient.

You can only use the checksume of the current direct-view TV to determine whether the software is corrupted or not. The Checksum value is determined according to the version of the software loaded on the set. Therefore, you can determine whether the software has been properly downloaded, if you know the correct checksum for that version of the software.

You can check the checksum according in the following order. Factory Mode Checksum Enter OutputChecksum(e.g.0xab2b)

ChecksumExamples T-SIXNSAM -1000.0 Checksum = XXXX

Troubleshooting


9.FlowChartforMalfunction

Is there something onthe Screen.

Yes Does the OSD menu on thescreen work?

Yes

No

UOCTOPICReplace.Yes

Is the power cord or themaster switch out of order?

Yes

Yes

Check that the cables ard properly connected to Main

Board.

No

Connect the cableNo

Is the cable from the

MainBoardththeCRTAssyproperly innected?

IsCRThigivoltagebeen measured?

Does the TV work?

SOUND IC

MICOM SMD IC

INPUT JACK

DY-JACK

VERTICALICMAINTRANS

SMPS-TR

OUTPUTTRQ401

BRIDGEDIODE

TUNERFBT

EWDRIVER

Troubleshooting


4-1-3 TroubleshootingProceduresbyASSY

1 NOPower- Power part of the Main Board Check.

Is the power cord or the master switch out of order?

Complete

Yes

Yes

YesCheck the FUSE FP801S Check the D801S #1 Check the IC801S #1

W6753F

No Picture & No Sound

Change FP801S Change D801S Change IC801S

Check the others partYes Yes

No No

D809C

F801A

SMPS-TR

BRIDGEDIODE

SOUND IC

FD801S

Troubleshooting


2. NoSound- when the power is normal

Checkthe+14Vline

Complete

YesCheck FD801S Check D809C Change IC601

No sound (1st power OK)

Check IC201 Pin#39.40Yes Yes

No

Change FD801S Change D809C

No

No

MICOM SMD IC

D809C

SOUND IC

FD801S

Troubleshooting


3. NoPicture- when the power is normall

Checkthe+125Vline

Complete

YesD811 open and check

T444B+Pin#3 Open and check CHECKCRTASS`Y

No picture (1st power OK)

Check D407Yes Yes

No

Change the D811 ChecktheQ401

No

No

ChecktheothersB+lineYes

ChangetheQ401Change D407

No

No

Yes

D811MAINTRANS FBT D407 OUTPUT TRQ401

Documents

Samsung Cl21b501hlmxzs Chasis Kscb(n)_cb5h