Samsung CL29A551GQ9XZD Service Manual
COLOR TELEVISION
Chassis : KSDA(N)_CB5G
Model : CL29A551GQ9XZD
SERVICE
Manual
COLOR TELEVISION CONTENTS
1. Precaution
2. Product Specification
3. Disassembly & Reassembly
4. Troubleshooting
5. Exploded View & Part List
6. Wiring Diagram
7. Schematic Diagram
CL29A551GQ
Refer to the service manual in the GSPN (see the rear cover) for the more information.
GSPN (Global Service Partner Network)
Area Web Site
North America service.samsungportal.com
Latin America latin.samsungportal.com
CIS cis.samsungportal.com
Europe europe.samsungportal.com
China china.samsungportal.com
Asia asia.samsungportal.com
Mideast & Africa mea.samsungportal.com
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. Apr. 2009
Printed in Korea
AA82-05814A
Table of Contents
1. Precaution
1-1 Safety Precautions ...................................................................................................................................................... 1-1
1-2 Servicing Precautions ..................................................................................................................................................
1-3 Static Electricity Precautions .......................................................................................................................................
1-4 Installation Precautions ...............................................................................................................................................
2. Product Specification
2-1 Product Specification ................................................................................................................................................... 2-1
2-2 Specifications Analysis ................................................................................................................................................
2-3 Accessories .................................................................................................................................................................
3. Disassembly & Reassembly
3-1 Overall Disassembly & Reassembly ............................................................................................................................3-1
4. Troubleshooting
4-1 Troubleshooting ........................................................................................................................................................... 4-1
4-2 Adjustment ...................................................................................................................................................................
1-3
1-4
1-5
2-2
2-3
4-14
5. Exploded View & Part List
5-1 CL29A551GQ9XZD Exploded View ............................................................................................................................5-1
5-2
CL29A551GQ9XZD Electrical Part List .......................................................................................................................5-3
6. Wiring Diagram
6-1 Overall Wiring ..............................................................................................................................................................6-1
6-2 Pin Connection ............................................................................................................................................................
7. Schematic Diagram
7-1 Circuit Description ....................................................................................................................................................... 7-1
7-2 Schematic Diagram .....................................................................................................................................................
6-3
7-5
Precaution
Samsung Electronics 1-1
1. Precaution
To avoid possible damages or electric shocks or exposure to radiation, follow the instructions below with regard to safety,
installation, service and ESD.
1-1 Safety Precautions
1. Make sure all protective devices are properly installed including non-metallic handles and compartment covers when installing or
re-installing the chassis or chassis assemblies.
2. Make sure that no gaps exist between the cabinets for children to insert their fingers in to prevent children from receiving electric
shocks. Gaps mentioned above include ventilation holes of a too great magnitude between the vaccum tube and the cabinet
mask, and the improper installation of the rear cabinet.
Errors may occur when the resistance is below 1.0
㏁
or over 5.2 ㏁.
In these cases, make sure that the device is repaired before sending it back to the customer.
3. Check for Electricity Leakage (Figure 1-1)
Warning: Do not use an insulated transformer for checking the
leakage. Use only those current leakage testers or mirroring
systems that comply with ANSIC 101.1 and the Underwriter
Laboratory’s specifications (UL1410, 59.7).
4. A high voltage is maintained within the specified limits using safety parts, calibration and tolerances. When voltage exceeds the
specified limits, check each special part.
5. Warning for Engineering Changes:
Never make any changes or additions to the circuit design or the internal part for this product.
Ex: Do not add any audio or video accessory connectors. This might cause physical damage. Furthermore, any changes or
additions to the original design/engineering will invalidate the warranty.
6. Warning - Hot Chassis:
Some TV chassis are directly connected to one end of the AC power cord for electrical reasons.
Without insulated transformers, the product can only be repaired safely when the chassis is connected to the earthed end of the
AC power source.
To make sure the AC power cord is properly connected, follow the instructions below. Use the voltmeter to measure the voltage
between the chassis and the earthed ground. If the measurement is over 1.0V, unplug the AC power cord and change the
polarity before re-inserting it. Measure the voltage between the chassis and the ground again.
7. Some TV chassis are shipped with an additional secondary grounding system. The secondary system is adjacent to the AC
power line. These two grounding systems are separated in the circuit using an unbreakable/unchangeable insulation material.
8. When any parts, material or wiring appear overheated or damaged, replace them with new regular ones immediately.
When any damage or overheating is detected, correct this immediately and make a regular check of possible errors.
DEVICE
UNDER
TEST
TEST ALL
EXPOSED METAL
SURFACES
LEAKAGE
CURRENT
TESTER
2-WIRE CORD
ALSO TEST WITH
PLUG REVERSED
(USING AC ADAPTER
PLUG AS REQUIRED)
EARTH
GROUND
(READING SHOULD
NOT BE ABOVE
0.5mA)
Precaution
1-2 Samsung Electronics
9. Check for the original shape of the lead, especially that of the antenna wiring, any sharp edges, the AC power and the high
voltage power. Carefully check if the wiring is too tight, incorrectly placed or loose. Never change the space between the part and
the printed circuit board. Check the AC power cord for possible damages. Keep the part or the lead away from any heat-emitting
materials.
10. Safety Indication:
Some electrical circuits or device related materials require special attention to their safety features, which cannot be viewed by
the naked eye. If an original part is replaced with another irregular one, the safety or protective features will be lost even if the
new one has a higher voltage or more watts.
Critical safety parts should be bracketed with (
, ). Use only regular parts for replacements (in particular, flame resistance
and dielectric strength specifications). Irregular parts or materials may cause electric shock or fire.
Precaution
Samsung Electronics 1-3
1-2 Servicing Precautions
Warning 1: First carefully read the “Safety Instruction” in this service manual.
When there is a conflict between the service and the safety instructions, follow the safety instruction at all times.
Warning 2: Any electrolytic capacitor with the wrong polarity will explode.
1. The service instructions are printed on the cabinet, and should be followed by any service personnel.
2. Make sure to unplug the AC power cord from the power source before starting any repairs.
(a) Remove or re-install parts or assemblies.
(b) Disconnect the electric plug or connector, if any.
(c) Connect the test part in parallel with the electrolytic capacitor.
3. Some parts are placed at a higher position than the printed board. Insulated tubes or tapes are used for this purpose.
The internal wiring is clamped using buckles to avoid contact with heat emitting parts. These parts are installed back to their
original position.
4. After the repair, make sure to check if the screws, parts or cables are properly installed. Make sure no damage is caused to the
repaired part and its surroundings.
5. Check for insulation between the blade of the AC plug and that of any conductive materials (i.e. the metal panel, input terminal,
earphone jack, etc).
6. Insulation Check Process: Unplug the power cord from the AC source and turn the switch on. Connect the insulating resistance
meter (500v) to the AC plug blade.
The insulating resistance between the blade of the AC plug and that of the conductive material should be more than 1
㏁
.
7. Any B+ interlock should not be damaged.
If the metal heat sink is not properly installed, no connection to the AC power should be made.
8. Make sure the grounding lead of the tester is connected to the chassis ground before connecting to the positive lead.
The ground lead of the tester should be removed last.
9. Beware of risks of any current leakage coming into contact with the high-capacity capacitor.
10. The sharp edges of the metal material may cause physical damage, so protect yourself by wearing gloves during the repair.
Precaution
1-4 Samsung Electronics
1-3 Static Electricity Precautions
1. Some semi-conductive (“solid state”) devices are vulnerable to static electricity. These devices are known as ESD. ESD
includes the integrated circuit and the field effect transistor. To avoid any materials damage from electrostatic shock, follow the
instructions described below.
2. Remove any static electricity from your body by connecting the earth ground before handling any semi-conductive parts or
assemblies. Alternatively, wear a dischargeable wrist-belt.
(Make sure to remove any static electricity before connecting the power source - this is a safety instruction for avoiding electric
shock)
3. Remove the ESD assembly and place it on a conductive surface such as aluminum foil to prevent accumulating static electricity.
4. Do not use any Freon-based chemicals. Such chemicals will generate static electricity that causes damage to the ESD.
5. Use only grounded-tip irons for soldering purposes.
6. Use only anti-static solder removal devices.
Most solder removal devices do not support an anti-static feature. A solder removal device without an anti-static feature can store
enough static electricity to cause damage to the ESD.
7. Do not remove the ESD from the protective box until the replacement is ready. Most ESD replacements are covered with lead,
which will cause a short to the entire unit due to the conductive foam, aluminum foil or other conductive materials.
8. Remove the protective material from the ESD replacement lead immediately after connecting it to the chassis or circuit
assembly.
9. Take extreme caution in handling any uncovered ESD replacements. Actions such as brushing clothes or lifting your leg from the
carpet floor can generate enough static electricity to damage the ESD.
CAUTION
These servicing instructions are for use by qualified
service personnel only.
To reduce the risk of electric shock do not perform any
servicing other than that contained in the operating
instructions unless you are qualified to do so.
Precaution
Samsung Electronics 1-5
1-4 Installation Precautions
1. For safety reasons, more than two people are required for carrying the product.
2. Keep the power cord away from any heat emitting devices, as a melted covering may cause fire or electric shock.
3. Do not place the product in areas with poor ventilation such as a bookshelf or closet. The increased internal temperature may
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.
6. Keep the antenna far away from any high-voltage cables and install it firmly. Contact with the high-voltage cable or the antenna
falling over may cause fire or electric shock.
7. Check the basics of the screen test.
- Image position/size, Tilt adjustment, Actuator activation .
MEMO
1-6 Samsung Electronics
2. Product Specification
2-1 Product Specification
Features
Block Specification Major IC Remark
CRT 29” Slim CRT 29” Slim CRT
RF Part 1 TUNER TDQ-6F/13F2S
Power Input Voltage : AC 100~240V (Mexico: AC 127V) W6750
Product Specification
Video
Sound Output : 10W x 2 TDA7297SA
Cabinet 29BG0 Cabinet Z50 Cabinet
Model CL29A551GQ
Screen Size 29”
Dimensions (WxHxD) 765 x 600 x 416.5 mm
Weight 42 kg
Voltage AC 100~240V (Mexico: AC 127V)
Speaker Output 10W + 10W
MULTI SYSTEM(NT/PAL/SECAM)
UOC TOP
1H Comb Filter
Specification
Samsung Electronics 2-1
Product Specification
2-2 Specifications Analysis
Model CL29A551GQ (KSDA) CL-29Z43MQ (KS7C)
Design
※
: application, : non-application
Screen Size
CRT Slim CRT SLIM-FIT
DNIe Jr. X X
Comb Filter 1H 1H
Picture
Sound
Convenience
Power
Consumption
Jacks
※
For the power supply and power consumption, refer to the label attached to the product.
Velocity Modulation O X
Video Noise Reduction O O
Auto Kinetic Bias O O
Color Tone Control O O
Tilt Control X O
Picture Mode 4 Mode 4 Mode
MTS/SAP O O
Output Power (RMS) 10W x 2 10W x 2
Tweeter X X
BBE X X
Surround X O
Sound Mode 5 Mode 5 Mode
Graphic Equalizer O X
Sub-Woofer Speaker
Auto Volume Leveler O O
Melody On/Off O O
Turbo Sound O O
PIP
Plug & Play O O
Zoom Mode O O
OSD Demo O O
OSD Language E/F/S/P E/F/S/P
Previous Channel O O
Closed Caption O O
On/Off Timer O O
Sleep Timer O O
Auto Power Off O O
Clock O O
Channel Scan X X
Self-diagnostic System X X
Remote Surf O O
Channel Labelling O O
Blue Screen O O
Rack
Voltage 100~240 AC120V
On 145W 140W
Stand-by
RF Input R1 R1
A/V Input S1/R2 S1/R2
Monitor Output R1 R1
S-VHS Input S1 S1
Headphone X X
DVD Input O O
PC Input(VGA) X X
Remote Controller TM85 TM85
29”
X
X
X
under 3W
29”
X
2T
X
under 3W
2-2 Samsung Electronics
2-3 Accessories
2-3-1 Supplied Accessories
Accessories Item Item code Remark
Product Specification
Remote Control
Batteries
Power Cord AA96-20127A
Owner’s Instructions AA68-03967Y
Warranty Card
Registration Card
Safety Guide Manual
2-3-2 Accessories that can be purchased additionally
Accessories Item Item code Remark
RF Cable -
AA59-00425A
4301-000121
Samsung Service center
-
-
-
Video Cable -
Audio Cable -
Component Cables (RCA) -
Electronics Store/
Internal shopping mall
Samsung Electronics 2-3
MEMO
2-4 Samsung Electronics
Disassembly & Reassembly
Samsung Electronics 3-1
3. Disassembly & Reassembly
3-1 Overall Disassembly & Reassembly
3-1-1 Disassembling the Cabinet
Part Name Description Description Photo
Back
Cover
①
Remove the 9 screws fixing the Back
Cover.
: RH, +, B, M4, L15, ZPC(BLK),
SWRCH18A
②
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.
Disassembly & Reassembly
3-2 Samsung Electronics
3-1-2 Disassembling the CRT and Chassis
Part Name Description Description Photo
Chassis
Holder
①
Separate the Ass’y Holder chassis from
the Front Cabinet.
②
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 the
clip fixing the Front Cabinet and
the Holder Chassis.
①
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.
①
Separate the D-Coil, DY-Cable and
power cord from the Front Cabinet and
Main Board.
②
Separate the power cord, DY-Cable by
pushing the fixing catch to the side and
pulling the wire up.
Pull the chassis while pushing the
clip fixing the Front Cabinet and
the Holder Chassis.
①
Separate the CRT Ass’y from the CRT.
②
Separate the TBC wire, GND cables
from the CRT Ass’y sequentially.
Disassembly & Reassembly
Samsung Electronics 3-3
Part Name Description Description Photo
Chassis
Holder
①
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 Disassembling the CRT Ass’y
Part Name Description Description Photo
CRT
Ass’y
①
Separate the cables connecting the
Main Ass’y and the CRT Ass’y.
①
Separate the wires from the FBT of the
Main Board and the CRT Ass’y.
②
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
3-4 Samsung Electronics
Troubleshooting
Samsung Electronics 4-1
4. Troubleshooting
4-1 Troubleshooting
4-1-1 First Checklist for Troubleshooting
1. Power LED: Check that the LED works when the power cord is connected to a 100~240V 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.
①
Check that the power cord is correctly connected to a 100~240V wall outlet.
②
Check that the Master Switch has been pressed.
③
Ch eck that the transmitter is turned on.
④
Check that transmitter device selection is set to TV.
⑤
Check that the signal cable is properly connected.
⑥
Check that channel setting has been set.
Troubleshooting
4-2 Samsung Electronics
4-1-2 Checkpoints by Error Mode
1. Troubleshooting Summary
Problem 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 & Remote Control
Problem 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 TV/AV 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
Samsung Electronics 4-3
3. Screen
Problem 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/theexternalchannelisnot
displayed.
■ 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. Sound
Problem 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
4-4 Samsung Electronics
5. Channel
Problem 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. Others
Problem Solution
The TV makes a noise as if something is dropping
inside.
ThisnoisemayoccurwhentheplasticmaterialinsidetheTVexpandsor
contracts 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
Samsung Electronics 4-5
7. Basic Troubleshooting: Diagnosis of LED on the Front Panel
●
: Light is On
◑
: Light is Blinking
○
: Light is Off
Power
Description
○
This happens when the Master Switch is not pressed 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. Troubleshooting by the Checksum
■ 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-URANSAS-1003.0checksum=9675
LED
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