Samsung CS29B850F18XSV User manual

SERVICE
Manual
COLOR TELEVISION
Chassis: KSDB(P)_CB1M
Model : CS29B850F18XSV
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.
CS29B850F1

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 Site
NorthAmerica service.samsungportal.com
LatinAmerica latin.samsungportal.com
CIS cis.samsungportal.com
Europe europe.samsungportal.com
China china.samsungportal.com
Asia asia.samsungportal.com
Mideast &Africa mea.samsungportal.com
© Samsung Electronics Co.,Ltd. Oct. 2009
Printed in Korea
AA82-06156A

Contents
1. Precaution
1-1 Safety Precautions ......................................................................................................................................................1-1
1-2 Servicing Precautions..................................................................................................................................................1-3
1-3 Static Electricity Precautions.......................................................................................................................................1-4
1-4 Installation Precautions ...............................................................................................................................................1-5
2. Product Specification
2-1 Product Specification...................................................................................................................................................2-1
2-2 SpecificationsAnalysis................................................................................................................................................2-2
2-3 Accessories.................................................................................................................................................................2-3
3. Disassembly & Reassembly
3-1 Overall Disassembly & Reassembly............................................................................................................................3-1
4. Troubleshooting
4-1 Troubleshooting...........................................................................................................................................................4-1
4-2 Adjustment...................................................................................................................................................................4-14
5. Exploded View & Part List
5-1 CS29B850F18XSV Exploded View.............................................................................................................................5-1
5-2 CS29B850F18XSV Electrical Part List........................................................................................................................5-3
6. Wiring Diagram
6-1 Overall Wiring..............................................................................................................................................................6-1
6-2 Pin Connection............................................................................................................................................................6-3
7. Schematic Diagram
7-1 Circuit Description .......................................................................................................................................................7-1
7-2 Schematic Diagram.....................................................................................................................................................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 (Fig. 1-1)
Warning: Do not use an insulated transformer for checking
the leakage. Use only those current leakage testers or
mirroring systems that comply withANSIC 101.1 and the
Underwriter Laboratory’s specifications (UL1410, 59.7).
DEVICE
UNDER
TEST TESTALL
EXPOSED METAL
SURFACES
LEAKAGE
CURRENT
TESTER
(READING SHOULD
NOT BE ABOVE
0.5mA)
2-WIRE CORD
ALSO TEST WITH
PLUG REVERSED
(USINGAC ADAPTER
PLUGAS REQUIRED) EARTH
GROUND
Fig. 1-1AC Leakage Test
4. Ahigh 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 theAC power source.
To make sure theAC 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 theAC 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.
9. Check for the original shape of the lead, especially that of
the antenna wiring, any sharp edges, theAC 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.

Precaution
1-2 Samsung Electronics
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 theAC 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 theAC 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 theAC plug blade.
The insulating resistance between the blade of theAC 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 theAC 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.Asolder 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.antenna for areas with
no DTV signal.
-Image position/size, Tilt adjustment

MEMO
1-6 Samsung Electronics

Product Specification
Samsung Electronics 2-1
2. Product Specification
2-1 Product Specification
Features
Block Specification Major IC Remark
CRT 29” Slim CRT 29” Slim CRT
RF Part 1 TUNER F/STUNER EWT-5F6T2-EW
Power Input Voltage : S.E.Asia: 220V W6754F
Video MULTI SYSTEM(NT/PAL/SECAM) UOC TOP 12110
2H Comb Filter
Sound Output : 10W x 2 TDA7297SA
Cabinet 29BF0 Cabinet
Specification
Model CS29B850F1
Screen Size 29”
Dimensions (WxHxD) 775 x 407 x 599 mm
Weight 36.2 kg
Voltage S.E.Asia: 220V
Speaker Output 10W + 10W

Product Specification
2-2 Samsung Electronics
2-2 SpecificationsAnalysis
※ : application, : non-application
Model CS29B850F1 (KSDB) CS29A730EL (KS7C)
Design
Basic
Product Type Slim CRT Slim CRT
Digital TV Analog Analog
Digital Display - -
Screen Size 29 29
Aspect Ratio 4:3 4:3
Visual
Quality
Progressive Scan O O
Digital Comb Filter X X
Screen Pitch 0.73 0.73
Digital Noise Reduction X X
AKB O O
DNIe Jr O O
3:2 Pull Down Support OX
Audio
Base/Treble/Balance XO
Equalizer OX
AVL X X
Surround X X
Speaker System Direct Direct
Sperker Output 10W + 10W 10W + 10W
Function
Dual Screen Function X X
Double Screen X X
TTX X X
Still Picture X X
Auto Jack Recognition X X
EPG X X
Network X X
Ports
Antenna In Rear:1 Rear:1
Extermal In Rear:1 Rear:1, Side: 1
S-Video XO
Y/Pb/Pr Rear:1 Rear:1
PC X X
DVI X X
HDMI X X
DigitalAudio Out X X
Video Out Rear:1 Rear:1
Remote Controller TM930 TM85
※ For the power supply and power consumption, refer to the label attached to the product.

Product Specification
Samsung Electronics 2-3
2-3 Accessories
2-3-1 SuppliedAccessories
Accessories Item Item code Remark
Remote Control
Batteries BN59-00890A 4301-000121
Samsung Service center
Power Cord AA39-10006X
Owner’s Instructions AA68-03973B
Warranty Card
Registration Card
Safety Guide Manual
-
-
AA68-03242M
2-3-2 Accessories that can be purchased additionally
Accessories Item Item code Remark
RF Cable -
Electronics Store/
Internal shopping mall
Video Cable -
Audio Cable -
Component Cables (RCA) -

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 screws fixing the Back Cover & Terminal
Board. (CS29B850F28XXV need to remove 8 screws/
CS29B850F28XXV need to remove 9 screws)
: RH, +, 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 theAss’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 CRTconnection, 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.
Pull the chassis while pushing the
clip fixing the Front Cabinet and
the Holder Chassis.
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 CRTAss’y from the CRT.
② Separate the TBC wire, GND cables from the CRTAss’
y sequentially.
Pull the chassis while pushing the
clip fixing the Front Cabinet and
the Holder Chassis.

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 CRThole with metal or your body when
separating the cable.
3-1-3 Disassembling the CRTAss’y
Part Name Description Description Photo
CRT
Ass’y
① Separate the cables connecting the MainAss’y and the
CRTAss’y.
Pull the wires while
pressing on the fixing clip.
① Separate the wires from the FBT of the Main Board and
the CRTAss’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 200V 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 200V 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.
■ PresstheSelectDevicebuttontoselecttheTVorexternaldevice.
■ Replacethebatteryoftheremotecontrolwithanewone.
■ Insertthebatterymakingsurethepolarity(+,-)iscorrect.
■ Checkiftheangleorthedistanceissufficient,orifthereisany
interference between the product and the remote control.
■ Makesuretheuserhaspressedthecorrectbutton.
■ ToavoiddirectsunlighttothereceivingpaneloftheTV,removeany
indoor lighting or change the location of the TV.
■ CheckifthepowerswitchatthebackleftoftheTVisturnedon..
Cannot change the channel with the remote control. ■ PresstheSelectDevicebuttontoselecttheTV. ■ Changethechannelusingtheremotecontrolofthecableorsatellite
receiver.
Cannot select anA/V channel. Press the TV/AV button and check if theAV item is grayed out. When the AV item is grayed out, you cannot select anA/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. ■ Checkifthepowercordisproperlyconnected. ■ Turnonthepower.
■ SelectanAVchannelthatcorrespondstotheexternaldevice.
Only the screen is blank/it is dark or too bright. Adjust the screen brightness.
Thescreenisblue/theexternalchannelisnot
displayed. ■ Checkiftheconnectorisproperlyinstalled.
■ SelectanAVchannelthatcorrespondstotheexternaldevice.
The screen overlaps (double/triple). ■ Checkiftheantennaisproperlyinstalled.
■ Adjusttheposition,angleordirectionoftheantenna.
The screen is snowy or unclear. The picture quality
gets worse when it is windy
■ Checkiftheantennahasbeenbentormovedbythewind.
■ Checktheantennaforitslifetime.
(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. ■ Adjustthecolordensity.
■ Checkiftheconnectorisproperlyinstalled.
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. ■ Increasethevolume.
■ PresstheMutebutton.
The sound is very low. ■ Increasethevolume.
■ SettheautovolumecontroltoON.
There is a lot of noise. Keep the antenna away from the power cord or connectors if possible.
The selected language does not appear. PresstheMultiplexbuttontoselecttheTV.